Flights
Hotels
From
To
1 traveler
Unsupported Browser!
Find Flights
Flights
Hotels
1 traveler
Unsupported Browser!
Find Flights

Cheap Flights from Boston to St Louis, MO, United States - BOS to STL

Popular flights from Boston to St Louis

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

American Airlines
Departure Date Return Date Lowest Price
May 28, 2016 Jun 4, 2016 $332
May 31, 2016 Jun 8, 2016 $332
Jun 1, 2016 Jun 4, 2016 $332
Jun 1, 2016 Jun 8, 2016 $332
United Airlines
Departure Date Return Date Lowest Price
Jun 1, 2016 Jun 11, 2016 $343

How Much Does it Cost to Fly from Boston to St Louis (BOS to STL)?

We have collected flight cost data from across the web for travel from Boston to St Louis, and have found the average flight price for this trip to be $343.

When Can I Buy the Cheapest Flight from Boston to St Louis (BOS to STL)?

Airlines can adjust prices for plane tickets from Boston to St Louis based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

Cheapest Day To Fly from Boston to St Louis

The chart below shows up-to-date information regarding the cheapest days to fly from Boston to St Louis.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$354 $332 $332 $349 $349 $332 $349

Lowest Fares Chart By Month from Boston to St Louis

The chart below shows the lowest fare by month when flying from Boston to St Louis.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Boston St Louis American 5/28/16 6/4/16 1 $332
June Boston St Louis American 6/1/16 6/4/16 1 $332
July Boston St Louis United 7/11/16 7/18/16 2 $354
August Boston St Louis American 8/4/16 8/9/16 2 $352
September Boston St Louis American 9/8/16 9/11/16 2 $342
October Boston St Louis American 10/5/16 10/9/16 2 $342
November Boston St Louis American 11/23/16 11/27/16 1 $531
March Boston St Louis American 3/11/17 3/18/17 1 $364

Round Trip vs One Way Flights from Boston to St Louis (BOS to STL)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Boston to St Louis. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from Boston to St Louis is $171.

The average price for round trip flights from Boston to St Louis is $338.

Boston to St Louis Flight Questions

Below are some common questions that asked about this flight route:

Question: What are the most popular connecting cities when flying from Boston to St Louis?
Answer: New York, NY

Airlines Flying from Boston to St Louis (BOS to STL)

Below are the different airlines that fly from Boston to St Louis with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from Boston to St Louis.

Boston to St Louis
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American LGA X X X X X X X
Delta MSP X X X X X X X
United EWR X X X X X X X
Southwest - X X X X X X X
Southwest BWI X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Boston and St Louis, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from Boston - BOS

FlightsAirlineLowest Price
Boston to Chicago American, Alaska, JetBlue, Spirit, United $97
Boston to Atlanta American, Alaska, Spirit, United $151

Cheap Domestic Flights to St Louis - STL

FlightsAirlineLowest Price
New York to St Louis American, Alaska, United $245
Newark to St Louis American, Alaska, United $245
Hartford to St Louis American, Alaska, United $311
Providence to St Louis American, Alaska, United $357
Albany to St Louis American, United $359
Manchester to St Louis American, United $328
Portland to St Louis American, Alaska, United $378
Westchester County to St Louis American, Alaska, United $327
Burlington to St Louis American, Alaska, United $426
New York to Chicago American, Alaska, JetBlue, Spirit, United $96
Long Island MacArthur to St Louis American, United $546
Newburgh to St LouisCheck Dates
Bangor to St Louis American, Alaska, United $409
New Haven to St Louis American $406
New York to Atlanta American, Alaska, Frontier, Spirit, United $158
New York to Los Angeles American, Alaska, JetBlue, Spirit, Sun Country, United, Virgin America $272
New York to Dallas - Ft Worth American, Alaska, JetBlue, Spirit, United, Virgin America $122
New York to Orlando American, Alaska, JetBlue, Spirit, United $132
New York to Miami American, Frontier, United $107
Newark to Chicago American, Alaska, JetBlue, United $150
New York to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $239
New York to Detroit American, Alaska, JetBlue, Spirit, United $96
New York to Minneapolis - St Paul American, Sun Country, United $294
New York to Houston American, Alaska, JetBlue, Spirit, United $262
New York to Charlotte American, JetBlue $147
New York to Indianapolis American, United $143

Cheap International Flights to St Louis - STL

FlightsAirlineLowest Price
New York to London Aegean, American, Air Berlin, Air France, Alaska, Finnair, Alitalia, JetBlue, British Airways, airBaltic, Condor, OpenSkies, Aer Lingus, Iberia, Meridiana, KLM, Kuwait, Luxair, Lufthansa, LOT, Thomas Cook, Czech, Austrian, TAROM, SATA, XL Airways, SAS, Brussels, Tap Portugal, United, Air Europa, Virgin Atlantic, City Jet, Great Lakes $652
New York to Toronto American, Air Canada, Alaska, JetBlue, Spirit, Porter, United, Virgin America, WestJet $175
Cheap Flights from Boston to St Louis, MO, United States, from $332 Round trip from BOS to STL