Cheap flights from St. Louis to Boston (STL - BOS) from $97

This is the cheapest one-way flight price, found on 5/30. Prices may vary by date and flight preferences.
STL — BOS
Jun 6 — Jun 131

The best prices from Lambert-St Louis to Boston Logan Intl are usually found in October or April, booked 30 days in advance, depart on a Wednesday or Monday and return on a Wednesday

How to find the cheapest flight from St. Louis (STL) to Boston (BOS)

All the information you need to plan the best STL to BOS flight in 2023: compare St. Louis to Boston flight prices with the expected peak season, weather and rainfall in Boston.

Popular in

March

Cheapest in

October

Round-trip from

$197

One-way from

$148
High demand for flights, 16% potential price rise
Best time to find cheap flights, 11% potential price drop
From Lambert-St Louis to Boston Logan Intl
One-way flight from Lambert-St Louis to Boston Logan Intl

STL - BOS

Price

$197 - $407

BOS

Temperature

30.2 - 73.4 °F

BOS

Rainfall

3.1 - 4 inches

Cheap flights from St. Louis to Boston in June, July 2023

The best prices found for STL to BOS flights for June, July
Scroll through some of the best deals on flights from St. Louis to Boston in 2023. Check back in a little while for more flight options.

St. Louis to Boston 2023 flight deals

Cheap flights to Boston from St. Louis found for this year
Scroll through some of the best deals on flights from St. Louis to Boston in 2023. Check back in a little while for more flight options.

Cheap Spirit Airlines flights from St. Louis to Boston

Find some of the cheapest Spirit Airlines flights traveling from St. Louis to Boston. Make sure to double check the flight details before booking.
  • If you’re traveling from St. Louis to Boston, one of the more common airlines traveling that route is Spirit Airlines. St. Louis to Boston flights are typically 49% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $556.71 RT. The cheapest Spirit Airlines flight found for this route was $234. When traveling from St. Louis to Boston on Spirit Airlines, the most popular airport to depart from is Lambert-St Louis Airport and the most popular airport to arrive at is Boston Logan Intl Airport. When flying from St. Louis to Boston, Spirit Airlines flights are 6% more popular than any other airline flying that same route.

Cheap American Airlines flights from St. Louis to Boston

Have a look at some of the cheapest available American Airlines flights departing from St. Louis and landing in Boston. Ensure the flight price, dates, time, and airline match your criteria before you book.
  • If you’re traveling from St. Louis to Boston, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $406.20 RT. This price is typically 67% more expensive than other airlines that offer St. Louis to Boston flights. When booking this route, the cheapest RT price found was $226. The most popular departure airport in St. Louis when flying to Boston is Lambert-St Louis Airport. The most popular airport to fly into when visiting Boston is Boston Logan Intl Airport. When flying from St. Louis to Boston, American Airlines flights are 3% more popular than any other airline flying that same route.

Non-stop flights to Boston from St. Louis

Save time with St. Louis to Boston direct flight deals
To help reduce your travel time, choose from one of these non-stop flights from St. Louis to Boston. Search for alternative flights from St. Louis to Boston by utilizing the search form above.

Last minute flights from St. Louis to Boston

Late deals on return flights to Boston from St. Louis, departing today and this week
Users seeking a last-minute flight from St. Louis to Boston should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.

One-way flights to Boston from St. Louis

The cheapest one-way flights from St. Louis to Boston
If you're seeking multiple options on one-way flights from St. Louis to Boston, be sure to check out these deals, which are updated often. For those needing a return trip from St. Louis, there is a search form available above.

Find flights from St. Louis to Boston within your budget

Use the slider to find flights from St. Louis to Boston that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$185 - $274

Route

Depart

Return

Price

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Mon 7/17

1 stop16h 35m

Boston Logan Intl

Thu 7/20

1 stop15h 40m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Mon 6/26

1 stop16h 25m

Boston Logan Intl

Thu 6/29

1 stop13h 28m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Mon 6/12

1 stop16h 25m

Boston Logan Intl

Thu 6/15

1 stop13h 28m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 7/22

1 stop17h 34m

Boston Logan Intl

Sun 7/30

1 stop16h 04m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Sat 6/17

1 stop15h 56m

Boston Logan Intl

Tue 6/20

1 stop23h 43m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Mon 7/17

1 stop16h 35m

Boston Logan Intl

Wed 7/19

1 stop21h 44m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Thu 10/26

1 stop12h 48m

Boston Logan Intl

Mon 11/6

1 stop6h 55m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Tue 7/11

1 stop16h 41m

Boston Logan Intl

Mon 7/24

1 stop25h 32m

Lambert-St LouisBoston Logan Intl

STL - BOS

STLBOS

Lambert-St Louis

Wed 8/9

Nonstop2h 39m

Boston Logan Intl

Tue 8/22

Nonstop3h 01m

Flights are sorted by cheapest first

Deals found on 6/1

Reviews of Airlines Servicing Boston

Peruse reviews from past customers who have flown with Spirit Airlines, American Airlines and Frontier from St. Louis to Boston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.6
Good
1,534 reviews

Comfort

7.4

Food

6.8

Entertainment

7.1

Boarding

7.8

Crew

8.2

Overall

7.6

Reviews

1 / 10

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

United Airlines
7.6
Good
1,534 reviews
United Airlines
7.6
Good
1,534 reviews

Comfort

7.4

Food

6.8

Entertainment

7.1

Boarding

7.8

Crew

8.2

Overall

7.6

Reviews

1 / 10

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

Sun Country Air
7.4
Good
84 reviews
United Airlines
7.6
Good
1,534 reviews

Comfort

7.4

Food

6.8

Entertainment

7.1

Boarding

7.8

Crew

8.2

Overall

7.6

Reviews

1 / 10

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

American Airlines
7.3
Good
2,149 reviews
United Airlines
7.6
Good
1,534 reviews

Comfort

7.4

Food

6.8

Entertainment

7.1

Boarding

7.8

Crew

8.2

Overall

7.6

Reviews

1 / 10

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

Spirit Airlines
6.6
Okay
1,034 reviews
United Airlines
7.6
Good
1,534 reviews

Comfort

7.4

Food

6.8

Entertainment

7.1

Boarding

7.8

Crew

8.2

Overall

7.6

Reviews

1 / 10

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

Frontier
5.9
Fair
669 reviews
United Airlines
7.6
Good
1,534 reviews

Comfort

7.4

Food

6.8

Entertainment

7.1

Boarding

7.8

Crew

8.2

Overall

7.6

Reviews

1 / 10

Didn’t have to wait long for the plane and was in the lounge through that time could relax there made it nice.

Related info for your journey

Useful info, stats and facts about St. Louis to Boston flights.

Alternative routes for St. Louis to Boston

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from St. Louis to Boston

The chart below displays the airlines Cheapflights users traveling from St. Louis to Boston choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
FrontierCheapest$86Average$212FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Spirit AirlinesCheapest$165Average$348FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
American AirlinesCheapest$226Average$406FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapest$229Average$384FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
JetBlueCheapest$234Average$557FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
United AirlinesCheapest$324Average$421FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights

Hourly flight availability from St. Louis to Boston

See what time of day planes typically take off from St. Louis to Boston
1%of flight departuresEarly morningMidnight to 6 am
54%of flight departuresMorning6 am to noon
28%of flight departuresAfternoonNoon to 6 pm
17%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Boston

See how many times per day planes take to the skies headed from St. Louis to Boston
Sunday7daily flights
Monday6daily flights
Tuesday7daily flights
Wednesday6daily flights
Thursday7daily flights
Friday7daily flights
Saturday3daily flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.