Cheap Flights from Boston to St. Louis from £39️ (BOS-STL)

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Latest Flight Deals from Boston to St. Louis

Book one-way or return flights from Boston to St. Louis from as little as £39. Choose from the popular airlines below and book your flight today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Searching for the best last minute flight from Boston to St. Louis? Find one-way or return flights that are affordable and fit your itinerary.

Trip.com monitors the ticket fares of flights from Boston to St. Louis. Stay updated on price trends and snag the best deals for your upcoming trip.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from Boston to St. Louis

View airlines operating flights from Boston to St. Louis. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines

From £39

Spirit Airlines

From £73

Jetblue Airways

From £80

American Airlines

From £87

Sun Country Airlines

From £101

United Airlines

From £102

Southwest Airlines

From £123

Delta Air Lines

From £168

Alaska Airlines

From £195

ANA airlines

Find more flights and airlines

Alternative Routes from Boston to St. Louis

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Boston to St. Louis.

Cheapest
BOS
08:29
24h 28m
1 transfer
STL
07:57
General Edward Lawrence Logan International Airport - St. Louis Lambert International Airport
Tue, May 21Frontier Airlines
£39
BOS
08:29
24h 28m
1 transfer
STL
07:57
General Edward Lawrence Logan International Airport - St. Louis Lambert International Airport
Tue, May 21Frontier Airlines
£39
Find More Flights

How do I find the cheapest flights?

When are flight tickets from Boston (BOS) to St. Louis (STL) the cheapest?
Airlines adjust prices for flights from Boston to St. Louis based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much are flights from Boston (BOS) to St. Louis (STL) cost?
According to Trip.com's data, the lowest price is around £277.
How long is the flight from Boston (BOS) to St. Louis (STL)?
It takes about 3 hours 7 minutes to fly from Boston (BOS) to St. Louis (STL).
What is the transportation method from the main airport to downtown in St. Louis?
- The distance from St. Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.
What are the most popular airlines that fly from Boston (BOS) to St. Louis (STL)?
Airlines with flights from Boston (BOS) to St. Louis (STL): Southwest Airlines, Qatar Airways and American Airlines.
What's the most popular airline for direct flights from Boston (BOS) to St. Louis (STL)?
American Airlines operates 1 direct flights from Boston (BOS) to St. Louis (STL).
How many airports in St. Louis (STL)?
There are 3 airport(s) in St. Louis (STL): St. Louis Downtown Airport, St. Louis Lambert International Airport and St Louis Spirit Of St Louis Airport.

How to find a cheap flight from Boston to St. Louis

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Boston to St. Louis. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Flight Information from Boston to St. Louis

Cheapest direct flight price	£38
Cheapest return ticket price	£175
Cheapest month	May
Peak season for travel	October
Flight distance	1,670.94km
Average flight time	3 hours 7 minutes
Popular airline	American Airlines