United Airlines flights from Boston to San Francisco (BOS - SFO)

BOS — SFO
May 18 — May 251

Cheapflights users flying from Boston to San Francisco on United Airlines typically fly into San Francisco and depart from Boston Logan Intl. Select your dates above for pricing.

United Airlines flights from Boston to San Francisco in 2024

Find detailed information about United Airlines flights from Boston to San Francisco. Explore the options provided by United Airlines to plan your journey from Boston to San Francisco. Data last updated May 13, 2024.

Popular in

June

Cheapest in

February

Average price (all airlines)

$375

One-way from

$100

Round-trip from

$226
Highest demand for flights from Boston Logan Intl to San Francisco; 10% potential price increase.
Best time to find cheap flights from Boston Logan Intl to San Francisco; 2% potential price drop.
Average price for all Boston Logan Intl to San Francisco flights (one-way and round-trip).
Cheapest one-way United Airlines flight from Boston Logan Intl to San Francisco
Cheapest round-trip United Airlines flight from Boston Logan Intl to San Francisco
  • Can I get a flight from Boston to San Francisco on United Airlines for under $400?

    There are 50 flights available on United Airlines from Boston to San Francisco for under $400. These prices can change based on many factors including date and time. To find BOS-SFO flight prices for your dates, click here.

  • How do most travelers feel about United Airlines?

    8,678 Cheapflights users have left reviews for United Airlines and have rated the airline 6.4/10. If you are looking to travel from Boston to San Francisco on United Airlines, input your dates in the form above for our best prices!

Cheapest United Airlines flights from Boston to San Francisco

Discover the cheapest flight options specifically offered by United Airlines for travel from Boston to San Francisco. Compare prices and availability to find the most affordable fares for your desired travel dates. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 2,633,403 searches. The data was last updated on May 13, 2024.
Thu 6/610:30 amBOS - SFO
Nonstop6h 29mUnited Airlines
Mon 6/1010:35 pmSFO - BOS
1 stop7h 49mUnited Airlines
Deal found 5/12$244
Mon 6/34:00 pmBOS - SFO
1 stop8h 38mUnited Airlines
Mon 6/1011:25 amSFO - BOS
Nonstop5h 41mUnited Airlines
Deal found 5/13$267
Thu 6/67:45 amBOS - SFO
Nonstop6h 28mUnited Airlines
Mon 6/1010:35 pmSFO - BOS
1 stop7h 49mUnited Airlines
Deal found 5/13$273

Direct flights from Boston to San Francisco on United Airlines

Discover the cheapest flight options specifically offered by United Airlines for travel from Boston to San Francisco. Compare prices and availability to find the most affordable fares for your desired travel dates. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 2,633,403 searches. The data was last updated on May 13, 2024.
Sat 9/216:00 amBOS - SFO
Nonstop6h 30mUnited Airlines
Sun 9/299:26 pmSFO - BOS
Nonstop5h 43mUnited Airlines
Deal found 5/12$235
Wed 8/216:00 amBOS - SFO
Nonstop6h 32mUnited Airlines
Sun 8/2511:20 pmSFO - BOS
Nonstop5h 48mUnited Airlines
Deal found 5/13$268
Thu 7/256:00 amBOS - SFO
Nonstop6h 27mUnited Airlines
Tue 7/309:19 pmSFO - BOS
Nonstop5h 43mUnited Airlines
Deal found 5/13$278

Last minute deals on Cheapflights

Explore last-minute flight deals on United Airlines for various destinations, including Boston to San Francisco. Discover attractive deals on flights departing soon. Keep an eye on the latest last-minute deals to find great opportunities for spontaneous travel. Please note that prices are subject to change and availability may vary. Data last updated May 13, 2024 and based on user searches. In the last 7 days, Cheapflights users made a total of 2,633,403 searches.
Thu 5/237:45 amBOS - SFO
Nonstop6h 28mUnited Airlines
Mon 6/36:34 pmSFO - BOS
1 stop8h 26mUnited Airlines
Deal found 5/13$334
Wed 5/226:15 amBOS - SFO
Nonstop6h 42mUnited Airlines
Wed 5/293:07 pmSFO - BOS
Nonstop5h 47mUnited Airlines
Deal found 5/12$358
Wed 5/226:15 amBOS - SFO
Nonstop6h 42mUnited Airlines
Wed 5/2911:10 amSFO - BOS
1 stop9h 49mUnited Airlines
Deal found 5/12$363

One-way United Airlines flights to San Francisco from Boston

Search for one-way flight options from Boston to San Francisco specifically provided by United Airlines. Find affordable one-way fares from United Airlines and compare prices with other airlines. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 2,633,403 searches. The data was last updated on May 13, 2024.
Tue 6/117:45 amBOS - SFO
Nonstop6h 28mUnited Airlines
Deal found 5/12$100
Wed 6/1210:30 amBOS - SFO
Nonstop6h 29mUnited Airlines
Deal found 5/11$104
Fri 8/166:00 amBOS - SFO
Nonstop6h 27mUnited Airlines
Deal found 5/13$118

Average price of United Airlines flights from Boston to San Francisco

Plan your United Airlines flight from Boston to San Francisco by taking into account the cheapest months to travel. The average price of a one-way United Airlines flight from Boston to San Francisco is currently $107 while a round-trip flight costs $260. Price data was last updated on May 12, 2024.

Currently, the most affordable month to book a United Airlines flight from Boston to San Francisco in December, with an average price of $267. Conversely, traveling with United Airlines from Boston to San Francisco in June will be the most expensive, with an average cost of $382. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$274

February

$281

March

$330

April

$296

May

$316

June

$382

July

$364

August

$298

September

$268

October

$268

November

$287

December

$267

Temperature and rainfall in San Francisco by month

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

SFO

Temperature

51.8 - 62.6 °F

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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Fly from Boston to San Francisco on another airline
Consider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on May 13, 2024.

See what others are saying about United Airlines

Read reviews and see what other travelers are saying about their experiences with United Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing United Airlines for your next flight. Reviews last updated May 13, 2024.
United Airlines
7.4
Good
10,980 reviews
Overview

Comfort

7.2

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.7
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