How does KAYAK find such low prices on flights from Massachusetts to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Massachusetts to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Massachusetts with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$126 CHEAP FLIGHTS from Massachusetts to St. Louis

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Massachusetts to St. Louis

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Massachusetts to St. Louis

Tue, Oct 13 - Sat, Oct 17

7:47 pm - 11:43 pmALB Albany Intl-STL Lambert-St Louis

4h 56m1 stop Philadelphia

5:00 am - 11:37 amSTL Lambert-St Louis-ALB Albany Intl

5h 37m1 stop Chicago O'Hare Intl

$239American Airlines

Mon, Nov 16 - Wed, Nov 18

5:02 am - 9:55 amALB Albany Intl-STL Lambert-St Louis

5h 53m1 stop Washington, D.C. Reagan-National

5:00 am - 11:28 amSTL Lambert-St Louis-ALB Albany Intl

5h 28m1 stop Chicago O'Hare Intl

$255American Airlines

Wed, Oct 14 - Sat, Oct 17

6:00 am - 9:49 amALB Albany Intl-STL Lambert-St Louis

4h 49m1 stop Detroit Metropolitan Wayne County

5:38 pm - 11:50 pmSTL Lambert-St Louis-ALB Albany Intl

5h 12m1 stop Atlanta Hartsfield-Jackson

$273Delta

Mon, Nov 16 - Wed, Nov 18

7:50 am - 12:40 pmALB Albany Intl-STL Lambert-St Louis

5h 50m1 stop Chicago Midway

11:55 am - 9:45 pmSTL Lambert-St Louis-ALB Albany Intl

8h 50m2 stops Dallas Love Field Baltimore/Washington

$279Southwest

Mon, Nov 16 - Wed, Nov 18

3:05 pm - 10:15 pmALB Albany Intl-STL Lambert-St Louis

8h 10m2 stops Nashville Intl Baltimore/Washington

11:55 am - 9:45 pmSTL Lambert-St Louis-ALB Albany Intl

8h 50m2 stops Dallas Love Field Baltimore/Washington

$284Southwest

Thu, Nov 19 - Mon, Nov 23

3:15 pm - 12:25 pmBDL Hartford Bradley Intl-STL Lambert-St Louis

22h 10m1 stop Orlando

1:20 pm - 11:31 amSTL Lambert-St Louis-BDL Hartford Bradley Intl

21h 11m1 stop Orlando

$288Frontier

Fri, Oct 23 - Sun, Oct 25

3:16 pm - 11:13 pmBDL Hartford Bradley Intl-STL Lambert-St Louis

8h 57m1 stop Orlando

4:30 pm - 2:21 pmSTL Lambert-St Louis-BDL Hartford Bradley Intl

20h 51m1 stop Orlando

$289Frontier

Tue, Oct 13 - Sat, Oct 17

9:42 am - 1:53 pmALB Albany Intl-STL Lambert-St Louis

5h 11m1 stop Detroit Metropolitan Wayne County

5:38 pm - 11:50 pmSTL Lambert-St Louis-ALB Albany Intl

5h 12m1 stop Atlanta Hartsfield-Jackson

$297Delta

Tue, Oct 13 - Sat, Oct 17

6:20 am - 12:13 pmALB Albany Intl-STL Lambert-St Louis

6h 53m1 stop Chicago O'Hare Intl

6:00 am - 2:14 pmSTL Lambert-St Louis-ALB Albany Intl

7h 14m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

$308United Airlines

Sat, Oct 10 - Sat, Oct 17

5:03 pm - 9:21 pmBDL Hartford Bradley Intl-STL Lambert-St Louis

5h 18m1 stop Chicago O'Hare Intl

9:04 am - 6:56 pmSTL Lambert-St Louis-BDL Hartford Bradley Intl

8h 52m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

$330United Airlines

Recent last minute flight deals from Massachusetts to St. Louis

Sat, Sep 19 - Mon, Oct 19

1:30 pm - 3:25 pmBOS Boston Logan Intl-STL Lambert-St Louis

2h 55mnonstop

5:55 am - 9:30 amSTL Lambert-St Louis-BOS Boston Logan Intl

2h 35mnonstop

$484Southwest

Sat, Sep 19 - Mon, Oct 19

3:11 pm - 9:44 pmBOS Boston Logan Intl-STL Lambert-St Louis

7h 33m1 stop Philadelphia

6:10 pm - 9:57 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 47mnonstop

$494American Airlines

Sat, Sep 19 - Mon, Oct 19

5:50 am - 1:25 pmBOS Boston Logan Intl-STL Lambert-St Louis

8h 35m2 stops Baltimore/Washington Cleveland Hopkins Intl

5:55 am - 9:30 amSTL Lambert-St Louis-BOS Boston Logan Intl

2h 35mnonstop

$499Southwest

Sun, Sep 20 - Tue, Sep 22

6:20 am - 8:20 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 00mnonstop

6:00 pm - 9:47 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 47mnonstop

$546American Airlines

Thu, Sep 17 - Fri, Sep 18

11:17 am - 1:10 pmBOS Boston Logan Intl-STL Lambert-St Louis

26h 53m2 stops Orlando Atlanta Hartsfield-Jackson

5:19 pm - 10:51 amSTL Lambert-St Louis-BOS Boston Logan Intl

16h 32m1 stop Orlando

$555Frontier

Sun, Sep 20 - Tue, Sep 22

10:00 am - 3:36 pmBOS Boston Logan Intl-STL Lambert-St Louis

6h 36m1 stop New York LaGuardia

1:55 pm - 7:46 pmSTL Lambert-St Louis-BOS Boston Logan Intl

4h 51m1 stop Detroit Metropolitan Wayne County

$563Delta

Wed, Sep 16 - Thu, Sep 17

10:15 am - 3:54 pmBOS Boston Logan Intl-STL Lambert-St Louis

6h 39m1 stop Atlanta Hartsfield-Jackson

7:00 am - 2:24 pmSTL Lambert-St Louis-BOS Boston Logan Intl

6h 24m1 stop New York LaGuardia

$582Delta

Wed, Sep 16 - Wed, Sep 16

5:45 am - 9:39 amBOS Boston Logan Intl-STL Lambert-St Louis

4h 54m1 stop Washington, D.C. Dulles Intl

10:53 am - 5:36 pmSTL Lambert-St Louis-BOS Boston Logan Intl

5h 43m1 stop Chicago O'Hare Intl

$595United Airlines

Thu, Sep 17 - Fri, Sep 18

11:17 am - 1:10 pmBOS Boston Logan Intl-STL Lambert-St Louis

26h 53m2 stops Orlando Atlanta Hartsfield-Jackson

5:19 pm - 10:51 amSTL Lambert-St Louis-BOS Boston Logan Intl

16h 32m1 stop Orlando

$597Frontier

Thu, Sep 17 - Sat, Sep 19

6:10 am - 2:15 pmBDL Hartford Bradley Intl-STL Lambert-St Louis

9h 05m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

8:00 am - 2:29 pmSTL Lambert-St Louis-BDL Hartford Bradley Intl

5h 29m1 stop Chicago O'Hare Intl

$660United Airlines

Recent direct flight deals from Massachusetts to St. Louis

Wed, Oct 14 - Sat, Oct 17

7:15 am - 9:29 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 14mnonstop

3:05 pm - 6:52 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 47mnonstop

$343American Airlines

Fri, Oct 30 - Mon, Nov 2

3:25 pm - 5:39 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 14mnonstop

9:50 am - 1:26 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 36mnonstop

$357American Airlines

Fri, Oct 30 - Fri, Oct 30

5:25 am - 7:25 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 00mnonstop

7:55 pm - 11:35 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 40mnonstop

$357Southwest

Wed, Nov 4 - Fri, Nov 6

1:10 pm - 3:20 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 10mnonstop

7:55 pm - 11:25 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 30mnonstop

$358Southwest

Wed, Oct 21 - Fri, Oct 23

5:40 pm - 7:55 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 15mnonstop

7:55 pm - 11:35 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 40mnonstop

$358Southwest

Thu, Oct 22 - Mon, Oct 26

5:25 am - 7:25 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 00mnonstop

7:55 pm - 11:35 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 40mnonstop

$367Southwest

Thu, Nov 19 - Thu, Nov 19

5:20 am - 7:30 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 10mnonstop

1:20 pm - 4:50 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 30mnonstop

$367Southwest

Thu, Nov 19 - Sat, Nov 21

3:25 pm - 5:51 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 26mnonstop

6:21 pm - 9:57 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 36mnonstop

$379American Airlines

Thu, Jan 28 - Tue, Feb 2

3:15 pm - 5:44 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 29mnonstop

6:20 pm - 9:55 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 35mnonstop

$387American Airlines

Thu, Jan 28 - Thu, Feb 4

3:15 pm - 5:44 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 29mnonstop

6:20 pm - 9:55 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 35mnonstop

$387American Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$126

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly with an average 8% increase in price.

Flight from Boston to St. Louis

How does KAYAK find such low prices on flights from Massachusetts to St. Louis?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Massachusetts to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Massachusetts to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Massachusetts is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Massachusetts to St. Louis?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Massachusetts with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Massachusetts to St. Louis?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Massachusetts up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.