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

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Maine 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 Maine 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 Maine with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine 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 Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$127 CHEAP FLIGHTS from Maine 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 Maine 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 Maine to St. Louis

Sat, Oct 17 - Tue, Oct 20

6:00 am - 11:33 amPWM Portland-STL Lambert-St Louis

6h 33m1 stop Newark

4:50 pm - 11:28 pmSTL Lambert-St Louis-PWM Portland

5h 38m1 stop Newark

$281United Airlines

Tue, Oct 27 - Fri, Oct 30

5:40 am - 11:35 amPWM Portland-STL Lambert-St Louis

6h 55m1 stop Baltimore/Washington

2:00 pm - 9:55 pmSTL Lambert-St Louis-PWM Portland

6h 55m1 stop Chicago Midway

$321Southwest

Tue, Oct 27 - Fri, Oct 30

6:00 pm - 10:05 pmPWM Portland-STL Lambert-St Louis

5h 05m1 stop Chicago Midway

5:25 am - 12:25 pmSTL Lambert-St Louis-PWM Portland

6h 00m2 stops Chicago Midway Baltimore/Washington

$326Southwest

Thu, Oct 22 - Sun, Oct 25

5:50 pm - 12:19 amBGR Bangor-STL Lambert-St Louis

7h 29m1 stop Chicago O'Hare Intl

11:32 am - 5:20 pmSTL Lambert-St Louis-BGR Bangor

4h 48m1 stop Chicago O'Hare Intl

$329American Airlines

Thu, Oct 22 - Sun, Oct 25

5:50 pm - 12:19 amBGR Bangor-STL Lambert-St Louis

7h 29m1 stop Chicago O'Hare Intl

11:32 am - 5:20 pmSTL Lambert-St Louis-BGR Bangor

4h 48m1 stop Chicago O'Hare Intl

$329American Airlines

Tue, Oct 6 - Mon, Oct 12

12:52 pm - 1:10 pmBOS Boston Logan Intl-STL Lambert-St Louis

25h 18m1 stop Atlanta Hartsfield-Jackson

6:35 pm - 11:52 amSTL Lambert-St Louis-BOS Boston Logan Intl

16h 17m1 stop Atlanta Hartsfield-Jackson

$337Frontier

Wed, Nov 4 - Mon, Nov 9

12:39 pm - 11:19 amBOS Boston Logan Intl-STL Lambert-St Louis

23h 40m2 stops Atlanta Hartsfield-Jackson Dallas/Fort Worth

6:44 pm - 11:30 amSTL Lambert-St Louis-BOS Boston Logan Intl

15h 46m1 stop Atlanta Hartsfield-Jackson

$338Frontier

Mon, Oct 5 - Tue, Oct 6

7:10 pm - 11:42 pmBOS Boston Logan Intl-STL Lambert-St Louis

5h 32m1 stop Atlanta Hartsfield-Jackson

10:35 am - 4:15 pmSTL Lambert-St Louis-BOS Boston Logan Intl

4h 40m1 stop Detroit Metropolitan Wayne County

$343Delta

Mon, Oct 5 - Sat, Oct 10

5:40 pm - 11:42 pmBOS Boston Logan Intl-STL Lambert-St Louis

7h 02m1 stop Atlanta Hartsfield-Jackson

4:22 pm - 11:59 pmSTL Lambert-St Louis-BOS Boston Logan Intl

6h 37m1 stop Detroit Metropolitan Wayne County

$343Delta

Wed, Oct 14 - Fri, Oct 16

7:38 am - 11:22 amBOS Boston Logan Intl-STL Lambert-St Louis

4h 44m1 stop Newark

7:30 am - 2:35 pmSTL Lambert-St Louis-BOS Boston Logan Intl

6h 05m1 stop Newark

$361United Airlines

Recent last minute flight deals from Maine to St. Louis

Wed, Sep 16 - Wed, Sep 30

5:48 pm - 12:27 amBGR Bangor-STL Lambert-St Louis

7h 39m1 stop Chicago O'Hare Intl

5:18 pm - 12:36 amSTL Lambert-St Louis-BGR Bangor

6h 18m1 stop Chicago O'Hare Intl

$343American Airlines

Wed, Sep 16 - Sat, Sep 19

5:50 am - 10:29 amBGR Bangor-STL Lambert-St Louis

5h 39m1 stop Philadelphia

5:18 pm - 12:36 amSTL Lambert-St Louis-BGR Bangor

6h 18m1 stop Chicago O'Hare Intl

$349American Airlines

Wed, Sep 16 - Sat, Sep 19

6:14 am - 3:38 pmBGR Bangor-STL Lambert-St Louis

10h 24m2 stops Newark Chicago O'Hare Intl

12:28 pm - 6:26 pmSTL Lambert-St Louis-BGR Bangor

4h 58m1 stop Newark

$368United Airlines

Wed, Sep 16 - Sat, Sep 19

5:17 am - 3:54 pmBGR Bangor-STL Lambert-St Louis

11h 37m2 stops New York LaGuardia Atlanta Hartsfield-Jackson

6:40 am - 3:34 pmSTL Lambert-St Louis-BGR Bangor

7h 54m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

$373Delta

Wed, Sep 16 - Wed, Sep 30

5:17 am - 11:43 amBGR Bangor-STL Lambert-St Louis

7h 26m1 stop New York LaGuardia

1:55 pm - 11:20 pmSTL Lambert-St Louis-BGR Bangor

8h 25m2 stops Detroit Metropolitan Wayne County New York LaGuardia

$396Delta

Wed, Sep 16 - Sat, Sep 19

9:32 am - 3:38 pmBGR Bangor-STL Lambert-St Louis

7h 06m1 stop Chicago O'Hare Intl

12:28 pm - 6:26 pmSTL Lambert-St Louis-BGR Bangor

4h 58m1 stop Newark

$453United Airlines

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

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

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

Wed, Sep 16 - Fri, Sep 18

12:54 pm - 9:35 amBOS Boston Logan Intl-STL Lambert-St Louis

21h 41m2 stops Atlanta Hartsfield-Jackson Dallas/Fort Worth

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

16h 32m1 stop Orlando

$604Frontier

Recent direct flight deals from Maine 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

Thu, Nov 5 - Thu, Dec 3

7:00 am - 9:16 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 16mnonstop

6:20 pm - 9:58 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 38mnonstop

$345American Airlines

Thu, Nov 5 - Thu, Nov 5

12:55 pm - 2:55 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 00mnonstop

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

2h 30mnonstop

$345Southwest

Thu, Dec 3 - Mon, Dec 7

7:00 am - 9:16 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 16mnonstop

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

2h 36mnonstop

$345American Airlines

Wed, Nov 4 - Fri, Nov 6

7:00 am - 9:16 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 16mnonstop

6:20 pm - 9:58 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 38mnonstop

$346American Airlines

Fri, Nov 6 - Sat, Dec 5

7:00 am - 9:16 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 16mnonstop

1:10 pm - 4:49 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 39mnonstop

$346American Airlines

Tue, Nov 3 - Fri, Nov 6

7:00 am - 9:16 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 16mnonstop

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

2h 36mnonstop

$346American Airlines

Fri, Nov 6 - Tue, Dec 1

3:25 pm - 5:47 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 22mnonstop

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

2h 36mnonstop

$346American Airlines

Tue, Oct 20 - Fri, Oct 23

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

3h 14mnonstop

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

2h 47mnonstop

$346American 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

Useful Info

Low season	January
High season	July
Cheapest flight	$127

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 Maine 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 Maine to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Maine 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 Maine 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 Maine with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine 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 Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.