Flights from Boston to St Louis, United States

Did you mean flights from St Louis to Boston?

Boston to St Louis Last modified: May 23, 2023 2:46 -04:00

We've scanned 0 round trip itineraries and found the cheapest flights to St Louis. United & Major Airlines frequently offer the best deals to St Louis flights, or select your preferred carrier below to see the cheapest days to fly.

United
BOSSTL
Tue 8/29
1 stop
STLBOS
Sat 9/2
1 stop
$301
Major Airlines
BOSSTL
Tue 8/1
1 stop
STLBOS
Tue 8/8
1 stop
$325
American
BOSSTL
Thu 6/22
1 stop
STLBOS
Sat 6/24
1 stop
$448
JetBlue
BOSSTL
Mon 6/5
nonstop
STLBOS
Fri 6/9
nonstop
$452
Multiple Airlines
BOSSTL
Tue 5/30
1 stop
STLBOS
Fri 6/2
1 stop
$564

How Much is a Flight from Boston to St Louis?

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 $344.

Where To Buy Cheap Flights from Boston to St Louis?

The best way to find a great deal on airfare is to search multiple sites. When you run a search on FareCompare, we search multiple sites and fare sources all at once so you don't have to - which is why we think FareCompare is the best place to find cheap tickets. Airlines can adjust prices for 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 found that Tuesdays, Wednesdays, and Saturdays are often the best days to book flights. If you'd like to learn more, read our article about the best time to buy airline tickets.

How far in advance should I book tickets from Boston to St Louis?

The chart below shows up-to-date information regarding how far in advance to book your flight from Boston to St Louis.

Non Stop versus Connecting
Advanced PurchaseNon StopConnecting
< 7 days $560 $561
7-14 days $452 $427
14-21 days $452 $405
21-30 days $452 $398
30-60 days $452 $400
60-90 days $452 $325
90+ days $452 $301

Cheapest Day To Fly from Boston to St Louis

We've examined 0 itinerary searches that we've seen for departures in the next 90 days and found that the cheapest day to fly from Boston to St Louis is Tuesday. See the chart below to compare prices for other days of the week.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$308$277$319$319$405$460$315

Compare Flight Prices from Boston to St Louis by Month

Low priced flights are most commonly available by purchasing between one and three months in advance. International or holiday flights may need to be purchased even further in advance. The chart below shows the cheapest flight prices by month for Boston to St Louis flights.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Boston St Louis Major Airlines 5/24/23 6/7/23 1 $361
June Boston St Louis Major Airlines 6/6/23 6/7/23 1 $317
July Boston St Louis United 7/2/23 7/5/23 1 $314
August Boston St Louis United 8/16/23 8/30/23 1 $277
September Boston St Louis Major Airlines 9/13/23 9/20/23 1 $317
October Boston St Louis United 10/28/23 10/31/23 1 $330
November Boston St Louis Major Airlines 11/15/23 12/1/23 1 $365
December Boston St Louis United 12/23/23 12/30/23 1 $482

Cheap Last Minute Flights from Boston to St Louis

Looking for cheap last minute flights or a weekend getaway? We've got you covered with weekend flight deals from Boston to St Louis. The chart below shows the best last minute deals and cheap flights this weekend we could find.

Next 30 Days

SunMonTueWedThuFriSat
21 22 23 24 25 26 27
$550
28 29 30 31 1 2 3
$550 $448
4 5 6 7 8 9 10
$448 $405
11 12 13 14 15 16 17
$405 $416
18 19 20 21 22 23 24
$416 $462
25 26 27 28 29 30 1
$462

Connecting Flights vs Direct Flights from Boston to St Louis

Flights between some cities may be significantly cheaper if you choose a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from Boston to St Louis is $352.

The average price for direct flights from Boston to St Louis is $464.

One Way Flights vs Round Trip Flights from Boston to St Louis

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 $167.

The average price for round trip flights from Boston to St Louis is $352.

Boston to St Louis Flight Questions

Boston to St Louis Airports

These are the major commercial airports we're currently monitoring in Boston and St Louis. If your route includes a city with multiple airports, you may be able to find substantial savings by choosing an alternate airport.

Farecompare Research Tools

FareCompare's Flight Schedule Search Tool helps you find information about airline schedule filings, including flight numbers, depart times, and travel distance.

Cheap Domestic Flights from Boston - BOS Last modified: May 23, 2023 2:46 -04:00

Cheap International Flights to St Louis - STL Last modified: May 23, 2023 2:46 -04:00

Cheap Flights from Boston to St Louis