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

Popular flights from Boston to St Louis

If your flight days are flexible and you looking for a good deal, our charts on cheap flights provide some insight regarding affordable flight options for your next big adventure.

American Airlines
Departure Date Return Date Lowest Price
Mar 22, 2016 Mar 29, 2016 $238
United Airlines
Departure Date Return Date Lowest Price
Mar 22, 2016 Mar 29, 2016 $247

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 $266.

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
$270 $238 $246 $280 $280 $248 $303

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
February Boston St Louis American 2/27/16 2/29/16 1 $310
March Boston St Louis American 3/22/16 3/29/16 1 $238
April Boston St Louis American 4/23/16 4/30/16 1 $248
May Boston St Louis American 5/10/16 5/18/16 1 $246
June Boston St Louis American 6/24/16 6/28/16 1 $282
July Boston St Louis United 7/6/16 7/12/16 2 $402
August Boston St Louis American 8/5/16 8/13/16 1 $412
September Boston St Louis American 9/28/16 10/5/16 1 $369

TIPSave $42 by flying into Champaign instead of St Louis from Boston

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 $150.

The average price for round trip flights from Boston to St Louis is $252.

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 ORD X X X X X X X
Delta LGA X X X X X X X
United IAD 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, JetBlue, Spirit, United $81
Boston to Atlanta American, Spirit, United $157

Cheap Domestic Flights to St Louis - STL

FlightsAirlineLowest Price
New York to St Louis American, United $242
Newark to St Louis American, United $242
Hartford to St Louis American, United $249
Providence to St Louis American, United $305
Albany to St Louis American, United $345
Manchester to St Louis American, United $306
Portland to St Louis American, United $334
Westchester County to St Louis American, United $265
Burlington to St Louis American, United $378
New York to Chicago American, Alaska, JetBlue, Spirit, United $74
Long Island MacArthur to St Louis American $572
Newburgh to St Louis American, United Check Dates
Bangor to St Louis American, United $473
New Haven to St Louis American Check Dates
New York to Atlanta American, Alaska, Frontier, Spirit, United $124
New York to Los Angeles American, Alaska, JetBlue, Spirit, Sun Country, United, Virgin America $205
New York to Dallas - Ft Worth American, JetBlue, Spirit, Sun Country, United, Virgin America $81
New York to Orlando American, JetBlue, Spirit, United $149
New York to Miami American, Frontier, United $89
Newark to Chicago American, Alaska, JetBlue, Spirit, United $78
New York to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $231
New York to Detroit American, JetBlue, Spirit, United $117
New York to Minneapolis - St Paul American, Sun Country, United $253
New York to Houston American, Alaska, JetBlue, Spirit, United $204
New York to Charlotte American, JetBlue, United $126
New York to Indianapolis American, Alaska, United $137

Cheap International Flights to St Louis - STL

FlightsAirlineLowest Price
New York to London American, Air Berlin, Air France, Finnair, Alitalia, JetBlue, British Airways, airBaltic, Condor, OpenSkies, Aer Lingus, Iberia, Meridiana, KLM, Kuwait, Lufthansa, LOT, Thomas Cook, Czech, Austrian, TAROM, SATA, SAS, Brussels, Tap Portugal, United, Air Europa, Virgin Atlantic $603
New York to Toronto American, Air Canada, Alaska, JetBlue, Porter, United, WestJet $187
Cheap Flights from Boston to St Louis, MO, United States, from $238 Round trip from BOS to STL