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Cheap flights from Seattle (SEA) to Belfast from $412

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — BHD
Jun 2 — Jun 91
From?
To?
Sun 6/2
Sun 6/9
1 adult, Economy
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Cheap flight deals from Seattle to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 28, 2024.

Popular in

June

Cheapest in

April

Round-trip from

$640

One-way from

$573
High demand for flights, 29% potential price rise
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Best time to find cheap flights, 31% potential price drop
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From Seattle/Tacoma Intl to Belfast
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One-way flight from Seattle/Tacoma Intl to Belfast
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What is the cheapest day to fly round-trip from Seattle to Belfast?

Sunday is generally a great day to depart. Flying on this day could help you save up to 50%.

What is the cheapest month to fly from Seattle to Belfast?

Our data shows that April tends to be the cheapest month to fly to Belfast from Seattle. Users have commonly found prices around $1,037 for the month, but tickets can be as low as $719. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Seattle to Belfast (SEA - BFS)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Belfast at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

Cheap KLM flights from Seattle to Belfast

Explore cheap flight options specifically provided by KLM for the route between Seattle and Belfast. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Find some of the cheapest KLM flights traveling from Seattle to Belfast. Deals update often to give you more flight options matching your criteria
Sat 9/1410:55 pmSEA - BHD
2 stops33h 55mKLM
Sat 9/285:20 pmBHD - SEA
1 stop25h 05mKLM
Deal found 5/28$827
Wed 8/141:30 pmSEA - BHD
1 stop19h 20mKLM
Tue 8/205:20 pmBHD - SEA
1 stop24h 55mKLM
Deal found 5/27$1,019
Thu 7/186:10 pmSEA - BHD
1 stop14h 40mKLM
Thu 7/255:20 pmBHD - SEA
1 stop24h 55mKLM
Deal found 5/27$1,040
Mon 7/156:10 pmSEA - BHD
1 stop14h 40mKLM
Thu 7/255:20 pmBHD - SEA
1 stop24h 55mKLM
Deal found 5/27$1,076

Cheap British Airways flights from Seattle to Belfast

Explore cheap flight options specifically provided by British Airways for the route between Seattle and Belfast. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Have a look at some of the cheapest available British Airways flights departing from Seattle and landing in Belfast. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 10/157:40 pmSEA - BHD
1 stop13h 45mBritish Airways
Thu 10/2412:45 pmBHD - SEA
1 stop13h 00mBritish Airways
Deal found 5/28$574
Thu 10/107:40 pmSEA - BHD
1 stop15h 40mBritish Airways
Wed 10/2311:50 amBHD - SEA
1 stop13h 55mBritish Airways
Deal found 5/27$624
Tue 10/297:45 pmSEA - BHD
1 stop15h 50mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/28$694
Wed 8/141:26 pmSEA - BHD
2 stops20h 14mBritish Airways
Tue 8/207:30 pmBHD - SEA
2 stops37h 19mBritish Airways
Deal found 5/27$730
Sat 9/143:45 pmSEA - BHD
2 stops35h 45mBritish Airways
Sat 9/289:40 amBHD - SEA
2 stops20h 13mBritish Airways
Deal found 5/28$733
Mon 8/191:30 pmSEA - BHD
1 stop15h 20mBritish Airways
Sun 8/257:40 pmBHD - SEA
1 stop23h 55mBritish Airways
Deal found 5/27$766
Mon 8/191:26 pmSEA - BHD
2 stops18h 09mBritish Airways
Sun 8/257:40 pmBHD - SEA
2 stops31h 40mBritish Airways
Deal found 5/27$778
Sat 8/106:00 amSEA - BHD
2 stops22h 20mBritish Airways
Sun 8/186:50 amBHD - SEA
1 stop12h 40mBritish Airways
Deal found 5/27$953
Sat 8/106:00 amSEA - BHD
2 stops22h 20mBritish Airways
Sun 8/186:50 amBHD - SEA
1 stop12h 40mBritish Airways
Deal found 5/28$954

Cheap Seattle to Belfast flights in May & June 2024

Find cheap flight options from Seattle to Belfast specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Prices were last updated on May 28, 2024.
These are some of the best deals we've found on flights to Belfast in 2024 at this time. Check back in a little while for more flight options.
Fri 6/711:30 amSEA - BHD
2 stops21h 20mDelta
Mon 6/105:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/27$1,182
Fri 6/711:30 amSEA - BHD
2 stops21h 20mDelta
Mon 6/105:20 pmBHD - SEA
2 stops30h 30mDelta
Deal found 5/27$1,192
Fri 6/76:05 pmSEA - BHD
1 stop14h 45mDelta
Mon 6/105:20 pmBHD - SEA
1 stop31h 15mDelta
Deal found 5/27$1,328
Sun 6/26:05 pmSEA - BHD
1 stop14h 45mDelta
Fri 6/75:20 pmBHD - SEA
1 stop31h 15mDelta
Deal found 5/28$1,348
Sun 6/211:50 amSEA - BHD
2 stops21h 00mDelta
Thu 6/65:20 pmBHD - SEA
1 stop31h 15mDelta
Deal found 5/28$1,352
Sun 6/211:35 amSEA - BHD
2 stops21h 15mDelta
Thu 6/65:20 pmBHD - SEA
2 stops32h 43mDelta
Deal found 5/28$1,363
Fri 6/76:05 pmSEA - BHD
3 stops31h 20mMultiple Airlines
Mon 6/107:00 amBHD - SEA
3 stops41h 15mMultiple Airlines
Deal found 5/27$1,424
Fri 6/76:05 pmSEA - BHD
3 stops31h 20mMultiple Airlines
Mon 6/106:55 amBHD - SEA
2 stops21h 25mMultiple Airlines
Deal found 5/27$1,501
Sat 6/112:40 amSEA - BHD
2 stops32h 10mDelta
Thu 6/65:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/28$1,567

Seattle to Belfast 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Belfast in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
These are some of the best deals we've found on flights to Belfast in 2024 at this time. Check back in a little while for more flight options.
Tue 10/157:40 pmSEA - BHD
1 stop13h 45mBritish Airways
Thu 10/2412:45 pmBHD - SEA
1 stop13h 00mBritish Airways
Deal found 5/28$574
Tue 10/151:45 pmSEA - BHD
2 stops17h 35mAmerican Airlines
Wed 10/236:50 amBHD - SEA
1 stop18h 55mAmerican Airlines
Deal found 5/28$577
Tue 10/151:45 pmSEA - BHD
2 stops17h 35mAmerican Airlines
Wed 10/239:50 amBHD - SEA
2 stops21h 00mAmerican Airlines
Deal found 5/28$586
Mon 11/111:50 pmSEA - BHD
2 stops20h 45mAmerican Airlines
Fri 11/296:50 amBHD - SEA
2 stops22h 53mAmerican Airlines
Deal found 5/27$587
Thu 10/107:40 pmSEA - BHD
1 stop15h 40mBritish Airways
Wed 10/2311:50 amBHD - SEA
1 stop13h 55mBritish Airways
Deal found 5/27$624
Thu 10/107:37 amSEA - BHD
2 stops19h 23mAmerican Airlines
Wed 10/236:50 amBHD - SEA
1 stop18h 55mAmerican Airlines
Deal found 5/27$632
Thu 10/107:37 amSEA - BHD
2 stops19h 23mAmerican Airlines
Wed 10/2311:50 amBHD - SEA
2 stops18h 55mAmerican Airlines
Deal found 5/27$642
Tue 10/297:45 pmSEA - BHD
1 stop15h 50mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/28$694
Tue 10/291:39 pmSEA - BHD
2 stops17h 46mAmerican Airlines
Sun 11/35:35 amBHD - SEA
1 stop18h 10mAmerican Airlines
Deal found 5/28$699

Seattle to Belfast flights leaving soon

Find last-minute flight options from Seattle to Belfast for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Check out these flights departing soon from Seattle to Belfast. It's wise to confirm all flight details are correct before booking.
Fri 6/711:30 amSEA - BHD
2 stops21h 20mDelta
Mon 6/105:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/27$1,182
Fri 6/711:30 amSEA - BHD
2 stops21h 20mDelta
Mon 6/105:20 pmBHD - SEA
2 stops30h 30mDelta
Deal found 5/27$1,192
Fri 6/76:05 pmSEA - BHD
1 stop14h 45mDelta
Mon 6/105:20 pmBHD - SEA
1 stop31h 15mDelta
Deal found 5/27$1,328
Sun 6/26:05 pmSEA - BHD
1 stop14h 45mDelta
Thu 6/65:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/28$1,348
Sun 6/21:30 pmSEA - BHD
2 stops19h 20mDelta
Fri 6/75:20 pmBHD - SEA
1 stop31h 15mDelta
Deal found 5/28$1,352
Sun 6/211:35 amSEA - BHD
2 stops21h 15mDelta
Thu 6/65:20 pmBHD - SEA
2 stops32h 43mDelta
Deal found 5/28$1,363
Fri 6/76:05 pmSEA - BHD
3 stops31h 20mMultiple Airlines
Mon 6/107:00 amBHD - SEA
3 stops41h 15mMultiple Airlines
Deal found 5/27$1,424
Fri 6/76:05 pmSEA - BHD
3 stops31h 20mMultiple Airlines
Mon 6/106:55 amBHD - SEA
2 stops21h 25mMultiple Airlines
Deal found 5/27$1,501
Sun 6/212:00 pmSEA - BHD
2 stops20h 50mDelta
Fri 6/75:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/28$8,999

One-way flights to Belfast from Seattle

Search for one-way flight options from Seattle to Belfast. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
Users in need of a one-way flight from Seattle to Belfast can choose from these deals. Users can also find round-trip Seattle to Belfast flights by using the search form above.
Tue 6/47:00 amSEA - BHD
3 stops42h 50mMultiple Airlines
Deal found 5/28$412
Sat 7/67:00 amSEA - BHD
3 stops49h 55mMultiple Airlines
Deal found 5/28$423
Fri 7/58:59 pmSEA - BHD
3 stops51h 46mMultiple Airlines
Deal found 5/28$426
Mon 7/17:00 amSEA - BHD
3 stops41h 45mMultiple Airlines
Deal found 5/28$431
Wed 7/36:21 pmSEA - BHD
3 stops39h 19mMultiple Airlines
Deal found 5/28$443
Wed 7/31:50 pmSEA - BHD
2 stops23h 20mMultiple Airlines
Deal found 5/28$473
Tue 7/211:00 pmSEA - BHD
2 stops31h 50mMultiple Airlines
Deal found 5/28$512
Fri 7/56:55 pmSEA - BHD
2 stops30h 30mMultiple Airlines
Deal found 5/28$517
Thu 7/41:30 pmSEA - BHD
1 stop13h 30mAmerican Airlines
Deal found 5/28$572

Find flights from Seattle to Belfast within your budget

Customize your flight search to find flights from Seattle to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$574 - $1,109

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

1 stop13h 45m

Belfast City

Thu 10/24

1 stop13h 00m

$574

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

2 stops17h 35m

Belfast City

Wed 10/23

1 stop18h 55m

$577

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

2 stops17h 35m

Belfast City

Wed 10/23

2 stops21h 00m

$586

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 11/11

2 stops20h 45m

Belfast City

Fri 11/29

2 stops22h 53m

$587

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/10

1 stop15h 40m

Belfast City

Wed 10/23

1 stop13h 55m

$624

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

1 stop15h 50m

Belfast City

Sun 11/3

1 stop15h 05m

$694

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 8/14

2 stops20h 55m

Belfast City

Tue 8/20

1 stop24h 55m

$758

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 9/14

2 stops33h 55m

Belfast City

Sat 9/28

1 stop25h 05m

$827

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/15

3 stops22h 55m

Belfast City

Wed 10/23

2 stops18h 50m

$1,109

Flights are sorted by cheapest first

Deals found on 5/28

When is the cheapest time to fly from Seattle to Belfast?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Belfast. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Belfast flight should consider departing on Thursday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average temperature and rainfall totals by month.

BFS

Temperature

41 - 60.8 °F

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated May 28, 2024.
Peruse reviews from past customers who have flown with KLM, British Airways and American Airlines from Seattle to Belfast to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,476 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,476 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,528 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,316 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Aer Lingus
7.2
Good
1,309 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Iberia
7.1
Good
2,742 reviews
Delta
8.0
Very good
10,476 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Belfast?

    If you book a flight to Belfast from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Seattle/Tacoma Intl to Belfast per day from 2 different airlines.

  • Can I find flights from Seattle to Belfast for under $600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Belfast for under $600. The cheapest flight booked recently is on British Airways for just $574, but on average you can expect to pay $681.

  • Are there last-minute flights available from Seattle to Belfast for under $1,200?

    There are currently 11+ open flights from Seattle to Belfast within the next 7 days for less than $1,200.

  • What are the cheapest airlines flying from Seattle to Belfast round-trip?

    Flying on British Airways is currently your cheapest option to Belfast, with prices starting at $574. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $577 and $758, respectively. British Airways is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Belfast one-way?

    The cheapest airlines for a one-way flight from Seattle to Belfast are American Airlines ($572), Aer Lingus ($573), and British Airways ($581).

  • What does SEA to BFS mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Seattle/Tacoma Intl Airport to Belfast Intl Airport flight would often be abbreviated as a SEA to BFS flight. Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Seattle to Belfast that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Belfast flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Belfast with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Belfast flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Belfast that include hotel bookings?

    Yes. In addition to deals on Seattle to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Belfast.

  • Can I find deals for business class flights from Seattle to Belfast?

    Yes. Cheapflights offers flight deals from Seattle to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Belfast that allow pets onboard?

    Many airlines flying from Seattle to Belfast offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Belfast?

    Yes, you can often find last-minute deals on Seattle to Belfast flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Belfast flight deals updated?

    The Seattle to Belfast flight deals you see on this page were last updated on 5/28.

  • When is the best time to book a flight from Seattle to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Belfast (average of $641). Flying from Seattle to Belfast in June is currently the most expensive (average of $1,181). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Seattle to Belfast
See prices for flight routes from nearby airports that may be better suited for you.

Seattle to Belfast Intl flights
Seattle to Belfast City flights
Portland to Belfast City flights

Top 2 airlines flying from Seattle to Belfast

Discover the top 2 airlines that operate flights from Seattle to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$641Average$805FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest$668Average$1,013FlexibilityNo cancel feeOn-time70%
Search British Airways flights
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Search flights from Seattle to Belfast by cabin class

Find flights from Seattle to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Belfast?

Cheapflights makes it easy to find Seattle to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Belfast?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Belfast for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Belfast with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Belfast flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Belfast become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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