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Cheap flights from St. Louis to Maine from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Maine departing on 1/26. 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 St. Louis to Maine

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:11 pm - 10:11 am
STL
-
BOS
16h 00m1 stop
Frontier Logo
6:00 am - 6:51 am
BOS
-
STL
25h 51m1 stop
$133Frontier
Wed, Jan 7 - Tue, Jan 13
Multiple Airlines Logo
5:11 pm - 10:11 am
STL
-
BOS
16h 00m1 stop
Multiple Airlines Logo
3:43 pm - 7:54 am
BOS
-
STL
17h 11m1 stop
$134Multiple Airlines
Wed, Jan 7 - Thu, Jan 15
Multiple Airlines Logo
5:11 pm - 10:01 am
STL
-
BOS
15h 50m1 stop
Multiple Airlines Logo
6:00 am - 6:51 am
BOS
-
STL
25h 51m1 stop
$142Multiple Airlines
Tue, Jan 6 - Tue, Jan 13
American Airlines Logo
3:56 pm - 11:53 pm
STL
-
BGR
6h 57m1 stop
American Airlines Logo
4:52 pm - 9:52 pm
BGR
-
STL
6h 00m1 stop
$279American Airlines
Fri, Feb 27 - Mon, Mar 2
Delta Logo
5:15 pm - 11:20 pm
STL
-
BGR
5h 05m1 stop
Delta Logo
1:17 pm - 11:38 pm
BGR
-
STL
11h 21m2 stops
$284Delta
Fri, Apr 10 - Tue, Apr 21
Delta Logo
6:00 am - 12:04 pm
STL
-
BGR
5h 04m1 stop
Delta Logo
6:00 am - 11:54 am
BGR
-
STL
6h 54m1 stop
$309Delta
Wed, Jun 3 - Wed, Jun 10
American Airlines Logo
6:00 am - 12:05 pm
STL
-
PWM
5h 05m1 stop
American Airlines Logo
5:07 pm - 9:51 pm
PWM
-
STL
5h 44m1 stop
$333American Airlines
Thu, Feb 5 - Thu, Feb 5
United Airlines Logo
6:30 am - 2:31 pm
STL
-
PWM
7h 01m2 stops
United Airlines Logo
7:27 pm - 11:59 pm
PWM
-
STL
5h 32m1 stop
$400United Airlines
Thu, Feb 5 - Thu, Feb 5
Southwest Logo
5:00 am - 12:10 pm
STL
-
PWM
6h 10m1 stop
Southwest Logo
6:10 am - 3:15 pm
PWM
-
STL
10h 05m1 stop
$412Southwest
Fri, Apr 10 - Tue, Apr 21
United Airlines Logo
8:05 am - 2:39 pm
STL
-
PWM
5h 34m1 stop
United Airlines Logo
4:10 pm - 10:58 pm
PWM
-
STL
7h 48m1 stop
$413United Airlines
Thu, Jan 8 - Mon, Jan 12

American Airlines flights from St. Louis to Maine

Our best American Airlines deals on St. Louis to Maine flight tickets
American Airlines
Feb 27
STL3:56 pmLambert-St Louis
6h 57m
1 stop
BGR11:53 pmBangor
Mar 2
BGR4:52 pmBangor
6h 00m
1 stop
STL9:52 pmLambert-St Louis
$279
Find similar
American Airlines
Dec 24
STL12:50 pmLambert-St Louis
2h 39m
BOS4:29 pmBoston Logan Intl
Jan 1
BOS12:03 pmBoston Logan Intl
3h 17m
STL2:20 pmLambert-St Louis
$297
Find similar
American Airlines
Dec 24
STL12:50 pmLambert-St Louis
2h 39m
BOS4:29 pmBoston Logan Intl
Jan 1
BOS5:30 pmBoston Logan Intl
7h 14m
1 stop
STL11:44 pmLambert-St Louis
$307
Find similar

Frontier flights from St. Louis to Maine

Our best Frontier deals on St. Louis to Maine flight tickets
Frontier
Jan 7
STL5:11 pmLambert-St Louis
16h 00m
1 stop
BOS10:11 amBoston Logan Intl
Jan 13
BOS6:00 amBoston Logan Intl
25h 51m
1 stop
STL6:51 amLambert-St Louis
$133
Find similar
Frontier
Jan 7
STL5:11 pmLambert-St Louis
16h 00m
1 stop
BOS10:11 amBoston Logan Intl
Jan 9
BOS6:00 amBoston Logan Intl
9h 48m
1 stop
STL2:48 pmLambert-St Louis
$150
Find similar
Frontier
Jan 7
STL7:43 pmLambert-St Louis
13h 28m
2 stops
BOS10:11 amBoston Logan Intl
Jan 13
BOS6:00 amBoston Logan Intl
25h 51m
1 stop
STL6:51 amLambert-St Louis
$152
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Maine 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 December 17, 2025.
Use the filters below to find and compare flights from St. Louis to Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 1/7

5:11 pm-10:11 am

1 stop16h 00m

Boston Logan Intl

Tue 1/13

6:00 am-6:51 am

1 stop25h 51m

$133

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 1/7

5:11 pm-10:11 am

1 stop16h 00m

Boston Logan Intl

Thu 1/15

3:43 pm-7:54 am

1 stop17h 11m

$134

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 1/6

5:11 pm-10:01 am

1 stop15h 50m

Boston Logan Intl

Tue 1/13

6:00 am-6:51 am

1 stop25h 51m

$142

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Fri 2/27

3:56 pm-11:53 pm

1 stop6h 57m

Bangor

Mon 3/2

4:52 pm-9:52 pm

1 stop6h 00m

$279

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Fri 4/10

5:15 pm-11:20 pm

1 stop5h 05m

Bangor

Tue 4/21

1:17 pm-11:38 pm

2 stops11h 21m

$284

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Wed 6/3

6:00 am-12:04 pm

1 stop5h 04m

Bangor

Wed 6/10

6:00 am-11:54 am

1 stop6h 54m

$309

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Thu 2/5

6:00 am-12:05 pm

1 stop5h 05m

Portland

Thu 2/5

5:07 pm-9:51 pm

1 stop5h 44m

$333

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Thu 2/5

6:30 am-2:31 pm

2 stops7h 01m

Portland

Thu 2/5

7:27 pm-11:59 pm

1 stop5h 32m

$400

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Fri 4/10

5:00 am-12:10 pm

1 stop6h 10m

Portland

Tue 4/21

6:10 am-3:15 pm

1 stop10h 05m

$412

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Thu 1/8

8:05 am-2:39 pm

1 stop5h 34m

Portland

Mon 1/12

4:10 pm-10:58 pm

1 stop7h 48m

$413

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 Maine from

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

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 Maine?

The cheapest month to fly to Maine from St. Louis is in September. Flight prices, which tend to average around $382, are often lower during this time because this is during the off-season. If you aren’t able to travel to Maine during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $409.

What is the cheapest day to depart on your flight to Maine?

The cheapest day to depart from St. Louis to Maine is on a Friday. Travelers who choose to depart for Maine on a Friday will often find tickets for as low as $546. Flights from St. Louis to Maine on a Monday will generally be more expensive and average around $766. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Maine?

The cheapest time of day to fly to Maine is in the evening when flights can be purchased for as low as $426. Flights at noon are often more expensive with an average ticket price of $1,036.

How far in advance should I book a flight to Maine?

You are more likely to see cheaper flights to Maine from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Maine for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Maine from St. Louis for as low as $354 on momondo.

Cheap St. Louis to Maine flight deals and tips

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

Fastest flight time

2h 25m

Direct flights

Every day

Airports in Maine

49 airports
The fastest flight from St. Louis to Maine takes 2h 25m
Direct flights go from St. Louis to Maine every day.
There are 49 airports in Maine. From St. Louis there are direct flights to Boston Logan Intl (BOS).
Search flight deals

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

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

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

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

    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 Lambert-St Louis Airport to Maine.

  • What documentation or ID do you need to fly to Maine?

    The travel and health documents you'll need for your trip to Maine 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 Maine. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Maine

Compare and see reviews for airlines that fly from St. Louis to Maine with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $201Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
DeltaPriceFrom $229Free CancellationRating
7.9
8,008 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
SouthwestPriceFrom $284Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Maine for you.

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

Yes. All flights to Maine from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Maine from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Maine from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Maine trip

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