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Cheap Flights from Boston to St Louis, MO, United States - BOS to STL Last modified: May 29, 2016 12:48 AM

Popular flights from Boston to St Louis Last modified: May 29, 2016 12:48 AM

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.

Alaska Airlines
Departure Date Return Date Lowest Price
Jun 21, 2016 Jun 24, 2016 $1,670
American Airlines
Departure Date Return Date Lowest Price
Aug 2, 2016 Aug 10, 2016 $366
United Airlines
Departure Date Return Date Lowest Price
Aug 26, 2016 Aug 29, 2016 $351
Sep 1, 2016 Sep 7, 2016 $351

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 $354.

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 $354 $354 $354 $351 $354 $354

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
June Boston St Louis United 6/11/16 6/14/16 1 $354
July Boston St Louis United 7/4/16 7/7/16 1 $354
August Boston St Louis United 8/26/16 8/29/16 2 $351
September Boston St Louis United 9/1/16 9/7/16 2 $351
October Boston St Louis United 10/2/16 10/4/16 1 $354
November Boston St Louis United 11/22/16 11/30/16 1 $354
December Boston St Louis United 12/22/16 12/28/16 1 $354
March Boston St Louis American 3/23/17 3/26/17 1 $451
TIPSave $136 by flying into Peoria 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 $182.

The average price for round trip flights from Boston to St Louis is $800.

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) Number of flights searched: 189Last modified: May 29, 2016 12:48 AM

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 ATL X X X X X X X
United ORD X X X X X X X
Southwest - X X X X X X X
Southwest MKE 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 $103
Boston to Atlanta American, Spirit, United $191

Cheap Domestic Flights to St Louis - STL

FlightsAirlineLowest Price
New York to St Louis American, Alaska, United $235
Newark to St Louis American, Alaska, United $235
Hartford to St Louis American, Alaska, United $252
Providence to St Louis American, Alaska, United $364
Albany to St Louis American, Alaska, United $349
Manchester to St Louis American, United $333
Portland to St Louis American, United $372
Westchester County to St Louis American, Alaska, United $290
Burlington to St Louis American, Alaska, United $372
New York to Chicago American, Alaska, JetBlue, Spirit, United $81
Long Island MacArthur to St Louis American, United $612
Newburgh to St LouisCheck Dates
Bangor to St Louis American, Alaska, United $372
New Haven to St Louis American $362
New York to Atlanta American, Alaska, Frontier, Spirit, United $148
New York to Los Angeles American, Alaska, JetBlue, Spirit, Sun Country, United, Virgin America $292
New York to Dallas - Ft Worth American, Alaska, JetBlue, Spirit, United, Virgin America $117
New York to Orlando American, JetBlue, Frontier, Spirit, United $173
New York to Miami American, Frontier, United $134
Newark to Chicago American, Alaska, JetBlue, United $160
New York to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $241
New York to Detroit American, JetBlue, Spirit, United $97
New York to Minneapolis - St Paul American, Sun Country, United $242
New York to Houston American, Alaska, JetBlue, Spirit, United $260
New York to Charlotte American, JetBlue, United $155
New York to Indianapolis American, Alaska, United $140

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, Luxair, Lufthansa, LOT, Thomas Cook, Czech, Austrian, TAROM, SATA, XL Airways, SAS, Brussels, Tap Portugal, United, Air Europa, Virgin Atlantic, City Jet $695
New York to Toronto American, Air Canada, Alaska, JetBlue, Porter, United, WestJet $174
Cheap Flights from Boston to St Louis, MO, United States, from $351 Round trip from BOS to STL