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Cheap flights from Maine to St. Louis from $123

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 8/24. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
5:40 pm - 11:37 pmBGR  Bangor-STL Lambert-St Louis
6h 57m1 stop Philadelphia
American Airlines Logo
5:44 pm - 11:31 pmSTL  Lambert-St Louis-BGR Bangor
4h 47m1 stop Philadelphia
$289American Airlines
Fri, Oct 23 - Tue, Oct 27
United Airlines Logo
6:14 am - 11:17 amBGR  Bangor-STL Lambert-St Louis
6h 03m1 stop Newark
United Airlines Logo
12:59 pm - 9:51 pmSTL  Lambert-St Louis-BGR Bangor
7h 52m1 stop Chicago O'Hare Intl
$329United Airlines
Mon, Aug 31 - Mon, Sep 7
American Airlines Logo
4:56 pm - 9:24 pmBGR  Bangor-STL Lambert-St Louis
5h 28m1 stop Washington, D.C. Reagan-National
American Airlines Logo
5:13 pm - 11:59 pmSTL  Lambert-St Louis-BGR Bangor
5h 46m1 stop Washington, D.C. Reagan-National
$329American Airlines
Fri, Sep 11 - Mon, Sep 14
Frontier Logo
12:45 pm - 5:22 pmBOS  Boston Logan Intl-STL Lambert-St Louis
29h 37m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:29 pm - 12:09 pmSTL  Lambert-St Louis-BOS Boston Logan Intl
20h 40m1 stop Atlanta Hartsfield-Jackson
$334Frontier
Sat, Sep 5 - Wed, Sep 9
Frontier Logo
11:28 am - 9:40 amBOS  Boston Logan Intl-STL Lambert-St Louis
23h 12m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:10 pm - 10:52 amSTL  Lambert-St Louis-BOS Boston Logan Intl
13h 42m2 stops Denver Intl Atlanta Hartsfield-Jackson
$335Frontier
Fri, Oct 9 - Mon, Oct 12
Multiple Airlines Logo
5:09 pm - 1:10 pmPWM  Portland-STL Lambert-St Louis
21h 01m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson
Multiple Airlines Logo
5:19 pm - 9:08 amSTL  Lambert-St Louis-PWM Portland
14h 49m1 stop Orlando
$337Multiple Airlines
Tue, Sep 29 - Fri, Oct 2
Southwest Logo
5:50 am - 1:25 pmBOS  Boston Logan Intl-STL Lambert-St Louis
8h 35m2 stops Baltimore/Washington Cleveland Hopkins Intl
Southwest Logo
6:45 am - 12:15 pmSTL  Lambert-St Louis-BOS Boston Logan Intl
4h 30m1 stop Chicago Midway
$342Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
5:50 am - 12:35 pmBOS  Boston Logan Intl-STL Lambert-St Louis
7h 45m2 stops Baltimore/Washington Atlanta Hartsfield-Jackson
Southwest Logo
2:45 pm - 10:30 pmSTL  Lambert-St Louis-BOS Boston Logan Intl
6h 45m1 stop Nashville Intl
$342Southwest
Sat, Sep 5 - Sun, Sep 6
United Airlines Logo
7:17 pm - 11:38 pmBGR  Bangor-STL Lambert-St Louis
5h 21m1 stop Newark
United Airlines Logo
12:59 pm - 9:47 pmSTL  Lambert-St Louis-BGR Bangor
7h 48m1 stop Chicago O'Hare Intl
$355United Airlines
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
12:34 pm - 9:40 amBOS  Boston Logan Intl-STL Lambert-St Louis
22h 06m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
Multiple Airlines Logo
10:35 am - 11:40 amSTL  Lambert-St Louis-BOS Boston Logan Intl
24h 05m1 stop Atlanta Hartsfield-Jackson
$373Multiple Airlines
Thu, Nov 5 - Sun, Nov 8

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American Airlines flights from Maine to St. Louis

Our best American Airlines deals on Maine to St. Louis flight tickets
American Airlines
Oct 23
BGR5:40 pmBangor
6h 57m
1 stop
STL11:37 pmLambert-St Louis
Oct 27
STL5:44 pmLambert-St Louis
4h 47m
1 stop
BGR11:31 pmBangor
$289
American Airlines
Sep 25
PWM4:41 pmPortland
5h 36m
1 stop
STL9:17 pmLambert-St Louis
Sep 27
STL5:18 pmLambert-St Louis
5h 29m
1 stop
PWM11:47 pmPortland
$343
American Airlines
Aug 18
BGR6:00 amBangor
5h 14m
1 stop
STL10:14 amLambert-St Louis
Aug 22
STL5:42 pmLambert-St Louis
5h 03m
1 stop
BGR11:45 pmBangor
$347

Delta flights from Maine to St. Louis

Our best Delta deals on Maine to St. Louis flight tickets
Delta
Sep 11
BGR5:17 amBangor
8h 15m
2 stops
STL12:32 pmLambert-St Louis
Sep 14
STL10:00 amLambert-St Louis
5h 21m
1 stop
BGR4:21 pmBangor
$343
Delta
Sep 11
BGR5:17 amBangor
8h 15m
2 stops
STL12:32 pmLambert-St Louis
Sep 14
STL12:00 pmLambert-St Louis
10h 20m
2 stops
BGR11:20 pmBangor
$348
Delta
Aug 7
BGR12:05 pmBangor
12h 53m
2 stops
STL11:58 pmLambert-St Louis
Sep 9
STL5:30 pmLambert-St Louis
4h 50m
1 stop
BGR11:20 pmBangor
$362

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 August 6, 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

Cheapest round-trip

BangorSt. Louis

BGR Bangor - STL Lambert-St Louis

BGRSTL

Bangor

Fri 10/23

5:40 pm-11:37 pm

1 stop6h 57m

Lambert-St Louis

Tue 10/27

5:44 pm-11:31 pm

1 stop4h 47m

$289

BangorSt. Louis

BGR Bangor - STL Lambert-St Louis

BGRSTL

Bangor

Mon 8/31

6:14 am-11:17 am

1 stop6h 03m

Lambert-St Louis

Mon 9/7

12:59 pm-9:51 pm

1 stop7h 52m

$329
Quickest round-trip

BangorSt. Louis

BGR Bangor - STL Lambert-St Louis

BGRSTL

Bangor

Fri 9/11

4:56 pm-9:24 pm

1 stop5h 28m

Lambert-St Louis

Mon 9/14

5:13 pm-11:59 pm

1 stop5h 46m

$329

BostonSt. Louis

BOS Boston Logan Intl - STL Lambert-St Louis

BOSSTL

Boston Logan Intl

Sat 9/5

12:45 pm-5:22 pm

1 stop29h 37m

Lambert-St Louis

Wed 9/9

2:29 pm-12:09 pm

1 stop20h 40m

$334

BostonSt. Louis

BOS Boston Logan Intl - STL Lambert-St Louis

BOSSTL

Boston Logan Intl

Fri 10/9

11:28 am-9:40 am

1 stop23h 12m

Lambert-St Louis

Mon 10/12

8:10 pm-10:52 am

2 stops13h 42m

$335

PortlandSt. Louis

PWM Portland - STL Lambert-St Louis

PWMSTL

Portland

Tue 9/29

5:09 pm-1:10 pm

2 stops21h 01m

Lambert-St Louis

Fri 10/2

5:19 pm-9:08 am

1 stop14h 49m

$337

BostonSt. Louis

BOS Boston Logan Intl - STL Lambert-St Louis

BOSSTL

Boston Logan Intl

Sat 9/5

5:50 am-1:25 pm

2 stops8h 35m

Lambert-St Louis

Sun 9/6

6:45 am-12:15 pm

1 stop4h 30m

$342

BostonSt. Louis

BOS Boston Logan Intl - STL Lambert-St Louis

BOSSTL

Boston Logan Intl

Sat 9/5

5:50 am-12:35 pm

2 stops7h 45m

Lambert-St Louis

Sun 9/6

2:45 pm-10:30 pm

1 stop6h 45m

$342

BangorSt. Louis

BGR Bangor - STL Lambert-St Louis

BGRSTL

Bangor

Mon 9/14

7:17 pm-11:38 pm

1 stop5h 21m

Lambert-St Louis

Mon 9/21

12:59 pm-9:47 pm

1 stop7h 48m

$355

BostonSt. Louis

BOS Boston Logan Intl - STL Lambert-St Louis

BOSSTL

Boston Logan Intl

Thu 11/5

12:34 pm-9:40 am

2 stops22h 06m

Lambert-St Louis

Sun 11/8

10:35 am-11:40 am

1 stop24h 05m

$373

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, August 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 $356. The month of March is another great option to travel to St. Louis, with average flight prices from Maine averaging around $372.

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

You could potentially save up to 82% 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).
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Frequently asked questions about flying from Maine to St. Louis

  • 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
United AirlinesPriceFrom $254Free CancellationRating
7.4
10,072 reviews
Search United Airlines flights
American AirlinesPriceFrom $263Free CancellationRating
7.1
11,865 reviews
Search American Airlines flights
DeltaPriceFrom $268Free CancellationRating
7.8
8,491 reviews
Search Delta flights
SouthwestPriceFrom $348Free CancellationRating
8.0
4,218 reviews
Search Southwest 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
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
Alton
O'Fallon
Clayton
Farmington
Fenton
Wentzville
Festus
Eureka
Edwardsville
Litchfield
Grafton
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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