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

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

What airlines fly to Maine?

American Airlines, Delta and Southwest 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 67% 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.

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

As of April 2026, 29 flights take off from St. Louis and land in Maine each week. The most common flight departure day for this route is Mon, with 24% of weekly flights taking off on this day.

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 April 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.

$79 Cheap Flights from St. Louis to Maine in 2026

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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.

5:27 pm - 1:24 am

STL

BOS

6h 57m

1 stop

6:00 am - 4:54 pm

BOS

STL

11h 54m

1 stop

$160Frontier

Fri, May 8 - Sun, May 10

5:27 pm - 1:24 am

STL

BOS

6h 57m

1 stop

6:00 am - 4:54 pm

BOS

STL

11h 54m

1 stop

$180Frontier

Fri, May 15 - Sun, May 17

4:19 pm - 11:15 pm

STL

PWM

5h 56m

1 stop

6:57 pm - 11:56 pm

PWM

STL

5h 59m

1 stop

$299Delta

Wed, Jun 10 - Tue, Jun 23

3:15 pm - 10:55 pm

STL

PWM

6h 40m

2 stops

7:10 pm - 11:00 pm

PWM

STL

4h 50m

1 stop

$304Southwest

Wed, Jun 17 - Wed, Jun 24

5:45 pm - 11:33 pm

STL

BGR

4h 48m

1 stop

5:05 am - 12:23 pm

BGR

STL

8h 18m

1 stop

$319Delta

Wed, May 27 - Wed, Jun 3

6:15 am - 2:24 pm

STL

PWM

7h 09m

1 stop

6:54 pm - 11:59 pm

PWM

STL

6h 05m

1 stop

$325American Airlines

Wed, Jun 24 - Wed, Jun 24

8:21 am - 3:39 pm

STL

PWM

6h 18m

1 stop

2:12 pm - 9:13 pm

PWM

STL

8h 01m

2 stops

$336United Airlines

Sat, Apr 18 - Sat, Apr 25

1:13 pm - 11:15 pm

STL

BGR

9h 02m

2 stops

7:15 pm - 11:35 pm

BGR

STL

5h 20m

1 stop

$344United Airlines

Wed, May 27 - Wed, Jun 3

2:33 pm - 11:25 pm

STL

BGR

7h 52m

1 stop

6:15 pm - 11:46 pm

BGR

STL

6h 31m

1 stop

$349American Airlines

Sat, Apr 11 - Wed, Apr 15

7:15 am - 2:15 pm

STL

PWM

6h 00m

1 stop

6:15 pm - 10:10 pm

PWM

STL

4h 55m

1 stop

$349Southwest

Wed, Sep 2 - Wed, Sep 9

Delta flights from St. Louis to Maine

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

Delta

Jun 10

STL4:19 pmLambert-St Louis

5h 56m

1 stop

PWM11:15 pmPortland

Jun 23

PWM6:57 pmPortland

5h 59m

1 stop

STL11:56 pmLambert-St Louis

$299

Delta

May 27

STL5:45 pmLambert-St Louis

4h 48m

1 stop

BGR11:33 pmBangor

Jun 3

BGR5:05 amBangor

8h 18m

1 stop

STL12:23 pmLambert-St Louis

$319

Delta

Aug 19

STL9:00 amLambert-St Louis

6h 01m

1 stop

BGR4:01 pmBangor

Aug 27

BGR3:00 pmBangor

9h 37m

2 stops

STL11:37 pmLambert-St Louis

$324

Southwest flights from St. Louis to Maine

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

Southwest

Jun 17

STL3:15 pmLambert-St Louis

6h 40m

2 stops

PWM10:55 pmPortland

Jun 24

PWM7:10 pmPortland

4h 50m

1 stop

STL11:00 pmLambert-St Louis

$304

Southwest

May 23

STL6:55 pmLambert-St Louis

2h 30m

BOS10:25 pmBoston Logan Intl

May 27

BOS10:45 amBoston Logan Intl

5h 20m

1 stop

STL3:05 pmLambert-St Louis

$345

Southwest

Sep 2

STL7:15 amLambert-St Louis

6h 00m

1 stop

PWM2:15 pmPortland

Sep 9

PWM6:15 pmPortland

4h 55m

1 stop

STL10:10 pmLambert-St Louis

$349

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 5/8

5:27 pm-1:24 am

1 stop6h 57m

Boston Logan Intl

Sun 5/10

6:00 am-4:54 pm

1 stop11h 54m

$160

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 5/15

5:27 pm-1:24 am

1 stop6h 57m

Boston Logan Intl

Sun 5/17

6:00 am-4:54 pm

1 stop11h 54m

$180

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 6/10

4:19 pm-11:15 pm

1 stop5h 56m

Portland

Tue 6/23

6:57 pm-11:56 pm

1 stop5h 59m

$299

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 6/17

3:15 pm-10:55 pm

2 stops6h 40m

Portland

Wed 6/24

7:10 pm-11:00 pm

1 stop4h 50m

$304

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Wed 5/27

5:45 pm-11:33 pm

1 stop4h 48m

Bangor

Wed 6/3

5:05 am-12:23 pm

1 stop8h 18m

$319

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 6/24

6:15 am-2:24 pm

1 stop7h 09m

Portland

Wed 6/24

6:54 pm-11:59 pm

1 stop6h 05m

$325

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Sat 4/18

8:21 am-3:39 pm

1 stop6h 18m

Portland

Sat 4/25

2:12 pm-9:13 pm

2 stops8h 01m

$336

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Wed 5/27

1:13 pm-11:15 pm

2 stops9h 02m

Bangor

Wed 6/3

7:15 pm-11:35 pm

1 stop5h 20m

$344

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Sat 4/11

2:33 pm-11:25 pm

1 stop7h 52m

Bangor

Wed 4/15

6:15 pm-11:46 pm

1 stop6h 31m

$349

Quickest round-trip

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 9/2

7:15 am-2:15 pm

1 stop6h 00m

Portland

Wed 9/9

6:15 pm-10:10 pm

1 stop4h 55m

$349

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 March. 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 March, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $386.

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 $429 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 $329 on momondo.

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

You could potentially save up to 2% 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

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

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 April 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 $201	Free Cancellation	Rating 7.4 9,529 reviews	Search United Airlines flights
Delta	PriceFrom $229	Free Cancellation	Rating 7.9 8,368 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.1 11,544 reviews	Search American Airlines flights
Southwest	PriceFrom $284	Free Cancellation	Rating 8.0 4,335 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.