Boston to St Louis Last modified: May 22, 2022 21:52 -04:00
We've scanned 48,825 round trip itineraries and found the cheapest flights to St Louis. JetBlue & Spirit frequently offer the best deals to St Louis flights, or select your preferred carrier below to see the cheapest days to fly.
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.
|Advanced Purchase||Non Stop||Connecting|
|< 7 days||$502||$117|
Cheapest Day To Fly from Boston to St Louis
We've examined 51,872 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 Monday. See the chart below to compare prices for other days of the week.
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|
|June||Boston||St Louis||British Airways||6/24/22||6/26/22||0||$404|
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
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 $533.
The average price for direct flights from Boston to St Louis is $510.
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 $510.
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.