What is the cheapest airline that flies from Lambert-St Louis to Maine?

United Airlines, Delta, and American Airlines are the most popular carriers operating from Lambert-St Louis to Maine

How many flights depart from St. Louis to Maine on average per week?

As of September 2026, 45 flights take off from St. Louis and land in Maine each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.

What airlines fly to Maine?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Maine from St. Louis according to our data. American Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Maine. Keep in mind that there are 4 different airlines that fly to Maine on a routine basis, so you have a few additional options to choose from.

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?

There are 6 operators available for flights from Lambert-St Louis Airport to Maine as of September 2026.

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.

$134 Cheap Flights from St. Louis to Maine in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Maine

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:21 am - 5:10 pmSTL Lambert-St Louis-BGR Bangor

4h 49m1 stop Philadelphia

11:48 am - 7:25 pmBGR Bangor-STL Lambert-St Louis

8h 37m1 stop Philadelphia

$250American Airlines

Sat, Oct 24 - Sat, Oct 31

5:08 pm - 11:59 pmSTL Lambert-St Louis-BGR Bangor

5h 51m1 stop Washington, D.C. Reagan-National

2:16 pm - 8:52 pmBGR Bangor-STL Lambert-St Louis

7h 36m1 stop New York LaGuardia

$289American Airlines

Thu, Oct 22 - Tue, Oct 27

5:31 pm - 11:25 pmSTL Lambert-St Louis-BGR Bangor

4h 54m1 stop New York LaGuardia

5:19 am - 11:47 amBGR Bangor-STL Lambert-St Louis

7h 28m1 stop New York LaGuardia

$313Delta

Wed, Oct 21 - Fri, Nov 6

4:59 pm - 11:29 pmSTL Lambert-St Louis-BOS Boston Logan Intl

5h 30m1 stop Atlanta Hartsfield-Jackson

6:50 am - 1:20 pmBOS Boston Logan Intl-STL Lambert-St Louis

7h 30m1 stop Atlanta Hartsfield-Jackson

$317Delta

Mon, Oct 5 - Wed, Oct 7

8:00 am - 2:07 pmSTL Lambert-St Louis-BOS Boston Logan Intl

5h 07m1 stop Chicago O'Hare Intl

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

4h 44m1 stop Newark

$317United Airlines

Thu, Oct 1 - Thu, Oct 15

11:15 am - 5:24 pmSTL Lambert-St Louis-BOS Boston Logan Intl

5h 09m1 stop Chicago O'Hare Intl

6:00 am - 10:32 amBOS Boston Logan Intl-STL Lambert-St Louis

5h 32m1 stop Chicago O'Hare Intl

$317United Airlines

Sat, Nov 7 - Mon, Nov 9

10:05 am - 3:55 pmSTL Lambert-St Louis-BOS Boston Logan Intl

4h 50m1 stop Baltimore/Washington

7:30 pm - 11:55 pmBOS Boston Logan Intl-STL Lambert-St Louis

5h 25m1 stop Nashville Intl

$317Southwest

Sat, Oct 31 - Mon, Nov 2

4:30 pm - 11:02 amSTL Lambert-St Louis-BOS Boston Logan Intl

17h 32m1 stop Orlando

11:47 am - 11:13 pmBOS Boston Logan Intl-STL Lambert-St Louis

12h 26m1 stop Orlando

$319Frontier

Thu, Oct 15 - Sun, Oct 18

6:39 pm - 10:51 amSTL Lambert-St Louis-BOS Boston Logan Intl

15h 12m1 stop Orlando

11:53 am - 4:34 pmBOS Boston Logan Intl-STL Lambert-St Louis

29h 41m1 stop Orlando

$319Frontier

Thu, Oct 1 - Sun, Oct 4

8:30 am - 4:05 pmSTL Lambert-St Louis-BOS Boston Logan Intl

6h 35m2 stops Milwaukee-Mitchell Baltimore/Washington

6:45 am - 11:35 amBOS Boston Logan Intl-STL Lambert-St Louis

5h 50m1 stop Baltimore/Washington

$322Southwest

Tue, Oct 6 - Wed, Oct 7

Cheap last minute flights

Enter your travel dates to find the best prices.

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

16h 32m1 stop Orlando

11:17 am - 5:54 pmBOS Boston Logan Intl-STL Lambert-St Louis

7h 37m1 stop Orlando

$350Frontier

Thu, Sep 17 - Thu, Sep 24

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

16h 32m1 stop Orlando

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

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

$445Frontier

Thu, Sep 17 - Sat, Sep 19

6:00 am - 12:22 pmSTL Lambert-St Louis-BOS Boston Logan Intl

5h 22m1 stop Washington, D.C. Reagan-National

3:21 pm - 5:24 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 03mnonstop

$547American Airlines

Wed, Sep 16 - Wed, Sep 16

7:05 am - 1:49 pmSTL Lambert-St Louis-BOS Boston Logan Intl

5h 44m1 stop Atlanta Hartsfield-Jackson

6:55 am - 1:23 pmBOS Boston Logan Intl-STL Lambert-St Louis

7h 28m1 stop Atlanta Hartsfield-Jackson

$566Delta

Tue, Sep 15 - Thu, Sep 17

2:35 pm - 6:22 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 47mnonstop

11:00 am - 1:03 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 03mnonstop

$581American Airlines

Sat, Sep 12 - Sat, Sep 19

6:40 pm - 10:20 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 40mnonstop

5:35 am - 7:25 amBOS Boston Logan Intl-STL Lambert-St Louis

2h 50mnonstop

$581Southwest

Wed, Sep 16 - Tue, Sep 22

6:40 pm - 10:20 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 40mnonstop

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

2h 55mnonstop

$581Southwest

Wed, Sep 16 - Sat, Sep 19

7:00 am - 2:22 pmSTL Lambert-St Louis-BOS Boston Logan Intl

6h 22m1 stop Newark

7:30 am - 11:17 amBOS Boston Logan Intl-STL Lambert-St Louis

4h 47m1 stop Newark

$596United Airlines

Sat, Sep 12 - Sat, Sep 19

7:00 am - 12:50 pmSTL Lambert-St Louis-BOS Boston Logan Intl

4h 50m1 stop Newark

7:05 am - 11:57 amBOS Boston Logan Intl-STL Lambert-St Louis

5h 52m1 stop Chicago O'Hare Intl

$695United Airlines

Sun, Sep 13 - Wed, Sep 16

6:15 am - 4:01 pmSTL Lambert-St Louis-PWM Portland

8h 46m2 stops Minneapolis St Paul New York LaGuardia

6:02 am - 1:23 pmPWM Portland-STL Lambert-St Louis

8h 21m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$1,703Delta

Sat, Sep 12 - Wed, Sep 16

Cheap direct flights

Enter your travel dates to find the best prices.

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

2h 47mnonstop

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

3h 16mnonstop

$327American Airlines

Fri, Oct 30 - Wed, Nov 4

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

2h 38mnonstop

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

3h 16mnonstop

$327American Airlines

Sat, Nov 7 - Mon, Nov 9

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

2h 40mnonstop

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

3h 00mnonstop

$327Southwest

Mon, Oct 5 - Thu, Oct 8

10:15 am - 1:45 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 30mnonstop

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

3h 10mnonstop

$327Southwest

Thu, Dec 3 - Fri, Dec 4

10:00 am - 1:44 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 44mnonstop

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

3h 14mnonstop

$327American Airlines

Tue, Oct 27 - Fri, Oct 30

6:00 pm - 9:37 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 37mnonstop

8:31 am - 11:04 amBOS Boston Logan Intl-STL Lambert-St Louis

3h 33mnonstop

$327American Airlines

Fri, Feb 26 - Mon, Mar 1

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

2h 47mnonstop

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

3h 16mnonstop

$327American Airlines

Fri, Oct 23 - Mon, Nov 2

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

2h 47mnonstop

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

3h 14mnonstop

$327American Airlines

Wed, Sep 30 - Tue, Oct 6

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

2h 38mnonstop

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

3h 16mnonstop

$327American Airlines

Sat, Nov 7 - Mon, Nov 9

10:25 am - 2:05 pmSTL Lambert-St Louis-BOS Boston Logan Intl

2h 40mnonstop

6:45 pm - 8:45 pmBOS Boston Logan Intl-STL Lambert-St Louis

3h 00mnonstop

$327Southwest

Tue, Oct 27 - Fri, Oct 30

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Southwest flights from St. Louis to Maine

Our best Southwest deals on St. Louis to Maine flight tickets

Southwest

Oct 21

STL2:25 pmLambert-St Louis

6h 05m

1 stop

BOS9:30 pmBoston Logan Intl

Oct 27

BOS6:45 amBoston Logan Intl

9h 15m

2 stops

STL3:00 pmLambert-St Louis

$322

Southwest

Nov 4

STL6:20 amLambert-St Louis

7h 25m

2 stops

PWM2:45 pmPortland

Nov 9

PWM5:10 pmPortland

7h 45m

2 stops

STL11:55 pmLambert-St Louis

$349

Southwest

Oct 27

STL8:30 amLambert-St Louis

7h 40m

2 stops

BOS5:10 pmBoston Logan Intl

Oct 30

BOS6:35 pmBoston Logan Intl

5h 45m

1 stop

STL11:20 pmLambert-St Louis

$352

American Airlines flights from St. Louis to Maine

Our best American Airlines deals on St. Louis to Maine flight tickets

American Airlines

Oct 24

STL11:21 amLambert-St Louis

4h 49m

1 stop

BGR5:10 pmBangor

Oct 31

BGR11:48 amBangor

8h 37m

1 stop

STL7:25 pmLambert-St Louis

$250

American Airlines

Oct 22

STL5:08 pmLambert-St Louis

5h 51m

1 stop

BGR11:59 pmBangor

Oct 27

BGR2:16 pmBangor

7h 36m

1 stop

STL8:52 pmLambert-St Louis

$289

American Airlines

Oct 23

STL6:10 pmLambert-St Louis

2h 47m

BOS9:57 pmBoston Logan Intl

Nov 2

BOS7:00 amBoston Logan Intl

3h 16m

STL9:16 amLambert-St Louis

$327

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangor

STL Lambert-St Louis - BGR Bangor

STLBGR

Lambert-St Louis

Sat 10/24

11:21 am-5:10 pm

1 stop4h 49m

Bangor

Sat 10/31

11:48 am-7:25 pm

1 stop8h 37m

$250

St. LouisBangor

STL Lambert-St Louis - BGR Bangor

STLBGR

Lambert-St Louis

Thu 10/22

5:08 pm-11:59 pm

1 stop5h 51m

Bangor

Tue 10/27

2:16 pm-8:52 pm

1 stop7h 36m

$289

St. LouisBangor

STL Lambert-St Louis - BGR Bangor

STLBGR

Lambert-St Louis

Wed 10/21

5:31 pm-11:25 pm

1 stop4h 54m

Bangor

Fri 11/6

5:19 am-11:47 am

1 stop7h 28m

$313

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Mon 10/5

4:59 pm-11:29 pm

1 stop5h 30m

Boston Logan Intl

Wed 10/7

6:50 am-1:20 pm

1 stop7h 30m

$317

Quickest round-trip

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 10/1

8:00 am-2:07 pm

1 stop5h 07m

Boston Logan Intl

Thu 10/15

7:38 am-11:22 am

1 stop4h 44m

$317

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Sat 11/7

11:15 am-5:24 pm

1 stop5h 09m

Boston Logan Intl

Mon 11/9

6:00 am-10:32 am

1 stop5h 32m

$317

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Sat 10/31

10:05 am-3:55 pm

1 stop4h 50m

Boston Logan Intl

Mon 11/2

7:30 pm-11:55 pm

1 stop5h 25m

$317

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 10/15

4:30 pm-11:02 am

1 stop17h 32m

Boston Logan Intl

Sun 10/18

11:47 am-11:13 pm

1 stop12h 26m

$319

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Thu 10/1

6:39 pm-10:51 am

1 stop15h 12m

Boston Logan Intl

Sun 10/4

11:53 am-4:34 pm

1 stop29h 41m

$319

St. LouisBoston

STL Lambert-St Louis - BOS Boston Logan Intl

STLBOS

Lambert-St Louis

Tue 10/6

8:30 am-4:05 pm

2 stops6h 35m

Boston Logan Intl

Wed 10/7

6:45 am-11:35 am

1 stop5h 50m

$322

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Maine?

The cheapest month to fly to Maine from St. Louis is in April. Flight prices, which tend to average around $349, 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 April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $357.

How far in advance should I book a flight from St. Louis 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 $432 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 $363 on momondo.

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

You could potentially save up to 35% on your flight if you consider stops on a St. Louis to Maine flight.

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

Best Price Found	$134
Fastest flight time	2h 25m
Direct flights	Every day
Airports in Maine	49 airports

The best one-way flight to Maine from St. Louis in the past 72 hours is $134. The best round-trip flight deal from St. Louis to Maine found on momondo in the last 72 hours is $250.

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

Frequently asked questions about flying from St. Louis to Maine

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?
There are 6 operators available for flights from Lambert-St Louis Airport to Maine as of September 2026.
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 Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 10,197 reviews	Search United Airlines flights
Delta	PriceFrom $278	Free Cancellation	Rating 7.8 8,557 reviews	Search Delta flights
American Airlines	PriceFrom $278	Free Cancellation	Rating 7.1 12,047 reviews	Search American Airlines flights
Southwest	PriceFrom $366	Free Cancellation	Rating 8.0 4,194 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.