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Cheap flights from Maine to St. Louis from $77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maine to St. Louis departing on 4/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Maine to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:15 pm - 11:46 pm
BGR
-
STL
6h 31m
1 stop
American Airlines Logo
8:54 am - 5:05 pm
STL
-
BGR
7h 11m
1 stop
$279American Airlines
Sat, Apr 11 - Mon, Apr 13
American Airlines Logo
6:01 pm - 8:24 am
PWM
-
STL
15h 23m
1 stop
American Airlines Logo
5:51 am - 5:31 pm
STL
-
PWM
10h 40m
1 stop
$292American Airlines
Fri, May 8 - Tue, May 12
Delta Logo
5:06 am - 12:23 pm
BGR
-
STL
8h 17m
1 stop
Delta Logo
6:10 am - 11:48 am
STL
-
BGR
4h 38m
1 stop
$294Delta
Thu, Mar 5 - Tue, Mar 10
Delta Logo
5:06 am - 12:23 pm
BGR
-
STL
8h 17m
1 stop
Delta Logo
6:32 am - 3:38 pm
STL
-
BGR
8h 06m
2 stops
$299Delta
Thu, Mar 5 - Tue, Mar 10
Southwest Logo
4:30 pm - 10:15 pm
PWM
-
STL
6h 45m
1 stop
Southwest Logo
4:45 pm - 12:05 am
STL
-
PWM
6h 20m
1 stop
$317Southwest
Tue, Mar 31 - Thu, Apr 2
Southwest Logo
4:30 pm - 10:15 pm
PWM
-
STL
6h 45m
1 stop
Southwest Logo
4:55 pm - 12:05 am
STL
-
PWM
6h 10m
2 stops
$322Southwest
Tue, Mar 31 - Thu, Apr 2
United Airlines Logo
7:12 pm - 11:57 pm
PWM
-
STL
5h 45m
1 stop
United Airlines Logo
7:45 am - 3:39 pm
STL
-
PWM
6h 54m
1 stop
$335United Airlines
Thu, Apr 9 - Sat, Apr 11
Multiple Airlines Logo
7:53 pm - 11:55 pm
BGR
-
STL
29h 02m
1 stop
Multiple Airlines Logo
4:55 pm - 2:42 pm
STL
-
BGR
20h 47m
2 stops
$337Multiple Airlines
Thu, Apr 9 - Tue, Apr 14
United Airlines Logo
7:12 pm - 11:57 pm
PWM
-
STL
5h 45m
1 stop
United Airlines Logo
7:45 am - 6:40 pm
STL
-
PWM
9h 55m
2 stops
$340United Airlines
Thu, Apr 9 - Sat, Apr 11
Multiple Airlines Logo
6:00 am - 6:51 am
BOS
-
STL
25h 51m
1 stop
Multiple Airlines Logo
8:22 pm - 4:45 pm
STL
-
BOS
19h 23m
2 stops
$350Multiple Airlines
Sun, Mar 1 - Mon, Mar 2

Southwest flights from Maine to St. Louis

Our best Southwest deals on Maine to St. Louis flight tickets
Southwest
May 6
PWM3:55 pmPortland
7h 15m
2 stops
STL10:10 pmLambert-St Louis
May 11
STL4:00 pmLambert-St Louis
6h 25m
1 stop
PWM11:25 pmPortland
$322
Southwest
May 6
PWM3:55 pmPortland
7h 15m
2 stops
STL10:10 pmLambert-St Louis
May 11
STL2:10 pmLambert-St Louis
8h 15m
2 stops
PWM11:25 pmPortland
$327
Southwest
Apr 8
BOS5:45 amBoston Logan Intl
3h 00m
STL7:45 amLambert-St Louis
Apr 21
STL2:30 pmLambert-St Louis
7h 10m
2 stops
BOS10:40 pmBoston Logan Intl
$352

American Airlines flights from Maine to St. Louis

Our best American Airlines deals on Maine to St. Louis flight tickets
American Airlines
Apr 11
BGR6:15 pmBangor
6h 31m
1 stop
STL11:46 pmLambert-St Louis
Apr 13
STL8:54 amLambert-St Louis
7h 11m
1 stop
BGR5:05 pmBangor
$279
American Airlines
May 8
PWM6:01 pmPortland
15h 23m
1 stop
STL8:24 amLambert-St Louis
May 12
STL5:51 amLambert-St Louis
10h 40m
1 stop
PWM5:31 pmPortland
$292
American Airlines
Apr 9
PWM7:07 amPortland
10h 34m
1 stop
STL4:41 pmLambert-St Louis
Apr 14
STL7:05 amLambert-St Louis
9h 26m
1 stop
PWM5:31 pmPortland
$305

momondo Fare Finder

 
Customize your flight search to find flights from Maine to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 19, 2026.
Use the filters below to find and compare flights from Maine to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

Sat 4/11

6:15 pm-11:46 pm

1 stop6h 31m

Lambert-St Louis

Mon 4/13

8:54 am-5:05 pm

1 stop7h 11m

$279

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 5/8

6:01 pm-8:24 am

1 stop15h 23m

Lambert-St Louis

Tue 5/12

5:51 am-5:31 pm

1 stop10h 40m

$292

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

Thu 3/5

5:06 am-12:23 pm

1 stop8h 17m

Lambert-St Louis

Tue 3/10

6:10 am-11:48 am

1 stop4h 38m

$294

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

Thu 3/5

5:06 am-12:23 pm

1 stop8h 17m

Lambert-St Louis

Tue 3/10

6:32 am-3:38 pm

2 stops8h 06m

$299

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Tue 3/31

4:30 pm-10:15 pm

1 stop6h 45m

Lambert-St Louis

Thu 4/2

4:45 pm-12:05 am

1 stop6h 20m

$317

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Tue 3/31

4:30 pm-10:15 pm

1 stop6h 45m

Lambert-St Louis

Thu 4/2

4:55 pm-12:05 am

2 stops6h 10m

$322

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Thu 4/9

7:12 pm-11:57 pm

1 stop5h 45m

Lambert-St Louis

Sat 4/11

7:45 am-3:39 pm

1 stop6h 54m

$335

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

Thu 4/9

7:53 pm-11:55 pm

1 stop29h 02m

Lambert-St Louis

Tue 4/14

4:55 pm-2:42 pm

2 stops20h 47m

$337

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Thu 4/9

7:12 pm-11:57 pm

1 stop5h 45m

Lambert-St Louis

Sat 4/11

7:45 am-6:40 pm

2 stops9h 55m

$340

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sun 3/1

6:00 am-6:51 am

1 stop25h 51m

Lambert-St Louis

Mon 3/2

8:22 pm-4:45 pm

2 stops19h 23m

$350

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Maine to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, September is the cheapest month to fly from Maine to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $333. The month of March is another great option to travel to St. Louis, with average flight prices from Maine averaging around $334.

Can stopping save me money on Maine to St. Louis flights?

You could potentially save up to 83% on your flight if you consider stops on a Maine to St. Louis flight.

Cheap Maine to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Maine to St. Louis

Fastest flight time

2h 50m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Maine to St. Louis takes 2h 50m
Direct flights go from Maine to St. Louis every day.
There is 1 airport in St. Louis. From Maine there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Maine to Lambert-St Louis Airport?

    Prices for flights from Maine to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Maine to Lambert-St Louis Airport?

  • How old do you have to be to fly from Maine to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maine to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Maine to St. Louis

Compare and see reviews for airlines that fly from Maine to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $236Free CancellationRating
7.9
8,208 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,307 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Wentzville
Fenton
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Maine to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Maine to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Maine to St. Louis with flexible booking policies on momondo?

Flights from Maine to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Maine to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Maine.

I’m not ready to book a flight from Maine to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Maine to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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