Question 1

What are the cheapest airlines flying from Boston to St. Louis round-trip?

Accepted Answer

Cheapflights users have booked flights from Boston to St. Louis round-trip from $151. Another airline that can offer you cheap pricing is Spirit Airlines. Frontier is priced at 65% lower than the current average price of a flight leaving 3 months from now.

Question 2

What are the cheapest airlines to fly from Boston to St. Louis one-way?

Accepted Answer

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $57. However, be on the lookout for offers from Spirit Airlines and American Airlines, as they are both options that can get you from Boston to St. Louis for a low price.

Question 3

How recently were the Boston to St. Louis flight deals updated?

Accepted Answer

The Boston to St. Louis flight deals you see on this page were last updated on 6/9.

Question 4

How far ahead should I book a flight from Boston to St. Louis?

Accepted Answer

To ensure you get the cheapest price possible for a flight from Boston to St. Louis, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 5

What is the cheapest month to book a flight from Boston to St. Louis?

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from Boston to St. Louis (average of $318). Flying from Boston to St. Louis in July is currently the most expensive (average of $365). 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.

Question 6

What is the cheapest day to fly from Boston to St. Louis?

Accepted Answer

Travelers seeking maximum savings on their Boston to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Question 9

What are the cheapest flights from Boston to St. Louis?

Accepted Answer

Looking at all options, your cheapest flight can be booked for $155. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $165 on average our data indicates $337 when flying from Boston to St. Louis.

Question 10

What are the most reliable airlines from Boston to St. Louis?

Accepted Answer

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to St. Louis on time: Republic Airways (100%), Qatar Airways (90%), American Airlines (89%).

Question 11

What are the most popular airlines that fly from Boston to St. Louis?

Accepted Answer

Consider American Airlines, Alaska Airlines or JetBlue when booking your flight. These represent the most popular airlines when flying from Boston to St. Louis.

Question 12

Can I find flights from Boston to St. Louis for under $200 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Boston to St. Louis for under $200. The cheapest flight booked recently is on Frontier for just $151, but on average you can expect to pay $192.

Question 13

Are there nonstop flights from Boston to St. Louis for under $400 on Cheapflights?

Accepted Answer

Cheapflights has at least 20 direct flights from Boston to St. Louis under $400. A good price for a nonstop flight from Boston to St. Louis is less than $418.

Question 14

Are there last-minute flights available from Boston to St. Louis for under $300?

Accepted Answer

There are currently 20+ open flights from Boston to St. Louis within the next 7 days for less than $300.

Question 15

What is the cheapest day to fly round-trip from Boston to St. Louis?

Accepted Answer

Sunday flights are found to be more expensive to fly from Boston to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

Question 16

How far in advance should I book a flight from Boston to St. Louis?

Accepted Answer

To save up to 87% on this flight, we recommend booking at least 30 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boston to St. Louis from $554 1-2 weeks out and tickets from $644 for flights departing within the next 72 hours.

Question 17

What is the cheapest month to fly from Boston to St. Louis?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to St. Louis. Flights to St. Louis from Boston in February are about $443 on average during February, but can be found for as low as $158.

Question 18

What is the cheapest time of day to fly from BOS to STL?

Accepted Answer

It’s typically best to fly out from Boston to St. Louis at noon. Doing so could potentially save you 16% on the flight price compared to flying in the afternoon, which is usually more expensive.

Question 19

What airports do I use to fly from Boston to St. Louis?

Accepted Answer

If you wish to fly to St. Louis from Boston, then you need to book flights from Boston Logan Intl to Lambert-St Louis. There are 5 flights from Logan Intl (BOS) to Lambert-St Louis (STL) per day to choose from. Flights to St. Louis from Logan Intl are available from 7 different airlines, which means you should have some options if you want to compare airfare deals. 2h 58m is how long a nonstop flight from Boston to Lambert-St Louis typically takes.

Question 20

Accepted Answer

One of the most popular airlines traveling from Boston to St. Louis is Frontier. Flights from Frontier traveling this route typically cost $518.80 RT. This price is typically 29% cheaper than other airlines that offer Boston to St. Louis flights. When booking this route, the cheapest RT price found was $442. Boston Logan Intl Airport is the most common Boston airport to take off from when flying to St. Louis. Lambert-St Louis Airport is the most popular arrival airport in St. Louis. When flying from Boston to St. Louis, Frontier flights are 6% more popular than any other airline flying that same route.

Question 21

Accepted Answer

If you’re traveling from Boston to St. Louis, one of the more common airlines traveling that route is Spirit Airlines. Boston to St. Louis flights are typically 37% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $445.80 RT. The cheapest Spirit Airlines flight found for this route was $282. When traveling from Boston to St. Louis on Spirit Airlines, the most popular airport to depart from is Boston Logan Intl Airport and the most popular airport to arrive at is Lambert-St Louis Airport. When flying from Boston to St. Louis, Spirit Airlines flights are 1% more popular than any other airline flying that same route.

Question 22

What does BOS to STL mean?

Accepted Answer

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Boston Logan Intl Airport to Lambert-St Louis Airport flight would often be abbreviated as a BOS to STL flight.

Question 23

Can I find deals for flights from Boston to St. Louis that include extra baggage allowance?

Accepted Answer

The amount of baggage you can bring on your Boston to St. Louis 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.

Question 24

Can I find deals on flights from Boston to St. Louis with specific airlines?

Accepted Answer

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

Question 25

Can I find deals for flights from Boston to St. Louis that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Boston to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 26

How can I find direct flights from Boston to St. Louis?

Accepted Answer

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

Question 27

Can I find deals for business class flights from Boston to St. Louis?

Accepted Answer

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

Question 28

Can I find deals for flights from Boston to St. Louis that allow pets onboard?

Accepted Answer

Many airlines flying from Boston to St. Louis 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.

Question 29

Can I find deals on last-minute flights from Boston to St. Louis?

Accepted Answer

Yes, you can often find last-minute deals on Boston to St. Louis 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.

Popular in	June
Cheapest in	February
Round-trip from	$318
One-way from	$138

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$103	Average$197	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$146	Average$237	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$197	Average$406	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$282	Average$446	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$313	Average$509	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$366	Average$535	FlexibilityNo cancel fee	On-time75%
JetBlue	Cheapest$442	Average$519	FlexibilityNo cancel fee	On-time62%

1%of flight departures	Early morningMidnight to 6 am
55%of flight departures	Morning6 am to noon
44%of flight departures	AfternoonNoon to 6 pm
0%of flight departures	Evening6 pm to midnight

Sunday	7daily flights
Monday	6daily flights
Tuesday	6daily flights
Wednesday	6daily flights
Thursday	6daily flights
Friday	6daily flights
Saturday	3daily flights

Cheap flights from Boston to St. Louis (BOS - STL) from $57

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 8/26. 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.

The best prices from Boston Logan Intl to Lambert-St Louis are usually found in February or January, booked 81 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Boston to St. Louis

Popular in

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Round-trip from

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What is the cheapest day to fly round-trip from Boston to St. Louis?

How far in advance should I book a flight from Boston to St. Louis?

What is the cheapest month to fly from Boston to St. Louis?

What is the cheapest time of day to fly from BOS to STL?

Cheap Boston to St. Louis flights in June & July 2024

Find cheap flight options from Boston to St. Louis specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,022,473 searches. Prices were last updated on June 9, 2024.

Check out some of the best flight deals from Boston to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.

Boston to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Boston and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,022,473 searches. Data last updated June 9, 2024.

Check out some of the best flight deals from Boston to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.

Boston to St. Louis flights leaving soon

Have a look at some of the last-minute flights available departing from Boston to St. Louis. Users should examine the flight details to ensure there are no surprises.

One-way flights to St. Louis from Boston

Take a look at some of the one-way flights we've detected from Boston to St. Louis. Users in need of a round-trip flight from Boston to St. Louis instead should update the search form at the top of page.

Find flights from Boston to St. Louis within your budget

How far ahead should I book a flight from Boston to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Boston to St. Louis. Price data was last updated on May 31, 2024.

To ensure you get the cheapest price possible for a flight from Boston to St. Louis, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Boston to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Boston to St. Louis. Price data was last updated on June 2, 2024.

Best time to book a flight from Boston to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Boston with our price prediction graph.

Temperature and rainfall in St. Louis by month

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

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Frontier, Spirit Airlines and United Airlines from Boston to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What airports do I use to fly from Boston to St. Louis?

Can I find flights from Boston to St. Louis for under $200 on Cheapflights?

Are there nonstop flights from Boston to St. Louis for under $400 on Cheapflights?

Are there last-minute flights available from Boston to St. Louis for under $300?

What are the cheapest airlines flying from Boston to St. Louis round-trip?

What are the cheapest airlines to fly from Boston to St. Louis one-way?

What are the most reliable airlines from Boston to St. Louis?

What are the cheapest flights from Boston to St. Louis?

What does BOS to STL mean?

Can I find deals for flights from Boston to St. Louis that include extra baggage allowance?

Can I find deals on flights from Boston to St. Louis with specific airlines?

Can I find deals for flights from Boston to St. Louis that include hotel bookings?

How can I find direct flights from Boston to St. Louis?

Can I find deals for business class flights from Boston to St. Louis?

Can I find deals for flights from Boston to St. Louis that allow pets onboard?

Can I find deals on last-minute flights from Boston to St. Louis?

How recently were the Boston to St. Louis flight deals updated?

What are the most popular airlines that fly from Boston to St. Louis?

What is the cheapest month to book a flight from Boston to St. Louis?

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Top 7 airlines flying from Boston to St. Louis

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Search flights from Boston to St. Louis by cabin class

Find flights from Boston to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Boston to St. Louis

Find hourly flight availability from Boston to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 9, 2024.

Weekly flight availability from Boston to St. Louis

Explore weekly flight availability from Boston to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 9, 2024.

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