Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Maine from $73

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 12/5. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Maine

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:30 am - 2:58 pmSTL-BGR
5h 28m1 stop
American Airlines Logo
1:01 pm - 6:42 pmBGR-STL
6h 41m1 stop
$289American Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
Multiple Airlines Logo
10:17 am - 8:33 amSTL-BOS
21h 16m2 stops
Multiple Airlines Logo
6:16 am - 10:02 amBOS-STL
28h 46m1 stop
$292Multiple Airlines
Find Deal
Sun, Oct 19 - Wed, Oct 22
Delta Logo
6:00 am - 12:40 pmSTL-BGR
5h 40m1 stop
Delta Logo
6:00 am - 11:55 amBGR-STL
6h 55m1 stop
$294Delta
Find Deal
Sat, Mar 28 - Wed, Apr 1
Frontier Logo
2:12 pm - 8:28 amSTL-BOS
17h 16m1 stop
Frontier Logo
12:20 pm - 9:07 amBOS-STL
21h 47m2 stops
$295Frontier
Find Deal
Thu, Nov 6 - Mon, Nov 10
Frontier Logo
4:56 pm - 10:48 amSTL-BOS
16h 52m1 stop
Frontier Logo
12:20 pm - 9:07 amBOS-STL
21h 47m2 stops
$298Frontier
Find Deal
Fri, Nov 14 - Mon, Nov 17
Delta Logo
6:00 am - 12:40 pmSTL-BGR
5h 40m1 stop
Delta Logo
3:00 pm - 11:40 pmBGR-STL
9h 40m2 stops
$299Delta
Find Deal
Sat, Mar 28 - Wed, Apr 1
United Airlines Logo
5:24 pm - 12:45 amSTL-BOS
6h 21m1 stop
United Airlines Logo
6:00 am - 10:52 amBOS-STL
5h 52m1 stop
$308United Airlines
Find Deal
Mon, Nov 17 - Mon, Nov 24
United Airlines Logo
5:24 pm - 12:45 amSTL-BOS
6h 21m1 stop
United Airlines Logo
9:40 am - 3:46 pmBOS-STL
7h 06m1 stop
$319United Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
Southwest Logo
1:50 pm - 5:20 pmSTL-BOS
2h 30mnonstop
Southwest Logo
10:20 am - 12:25 pmBOS-STL
3h 05mnonstop
$349Southwest
Find Deal
Mon, Nov 3 - Tue, Nov 4
Southwest Logo
1:50 pm - 9:35 pmSTL-BOS
6h 45m1 stop
Southwest Logo
1:30 pm - 3:35 pmBOS-STL
3h 05mnonstop
$359Southwest
Find Deal
Mon, Nov 3 - Mon, Nov 10

Spirit Airlines flights from St. Louis to Maine

Our best Spirit Airlines deals on St. Louis to Maine flight tickets
Spirit Airlines
Oct 23
STL10:57 amLambert-St Louis
12h 02m
1 stop
BOS11:59 pmBoston Logan Intl
Oct 24
BOS6:17 amBoston Logan Intl
36h 53m
3 stops
STL6:10 pmLambert-St Louis
$304
Find similar
Spirit Airlines
Oct 30
STL10:57 amLambert-St Louis
12h 02m
1 stop
BOS11:59 pmBoston Logan Intl
Oct 31
BOS2:15 pmBoston Logan Intl
28h 55m
3 stops
STL6:10 pmLambert-St Louis
$305
Find similar
Spirit Airlines
Oct 18
STL7:15 pmLambert-St Louis
15h 11m
1 stop
BOS11:26 amBoston Logan Intl
Oct 24
BOS8:24 pmBoston Logan Intl
22h 46m
1 stop
STL6:10 pmLambert-St Louis
$323
Find similar

Southwest flights from St. Louis to Maine

Our best Southwest deals on St. Louis to Maine flight tickets
Southwest
Nov 3
STL1:50 pmLambert-St Louis
2h 30m
BOS5:20 pmBoston Logan Intl
Nov 4
BOS10:20 amBoston Logan Intl
3h 05m
STL12:25 pmLambert-St Louis
$349
Find similar
Southwest
Nov 3
STL1:50 pmLambert-St Louis
6h 45m
1 stop
BOS9:35 pmBoston Logan Intl
Nov 10
BOS1:30 pmBoston Logan Intl
3h 05m
STL3:35 pmLambert-St Louis
$359
Find similar
Southwest
Oct 31
STL12:40 pmLambert-St Louis
9h 25m
1 stop
BOS11:05 pmBoston Logan Intl
Nov 3
BOS5:30 amBoston Logan Intl
5h 10m
1 stop
STL9:40 amLambert-St Louis
$360
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 October 7, 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. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Tue 10/21

8:30 am-2:58 pm

1 stop5h 28m

Bangor

Sat 10/25

1:01 pm-6:42 pm

1 stop6h 41m

$289

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sun 10/19

10:17 am-8:33 am

2 stops21h 16m

Boston Logan Intl

Wed 10/22

6:16 am-10:02 am

1 stop28h 46m

$292

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Sat 3/28

6:00 am-12:40 pm

1 stop5h 40m

Bangor

Wed 4/1

6:00 am-11:55 am

1 stop6h 55m

$294

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 11/6

2:12 pm-8:28 am

1 stop17h 16m

Boston Logan Intl

Mon 11/10

12:20 pm-9:07 am

2 stops21h 47m

$295

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 11/14

4:56 pm-10:48 am

1 stop16h 52m

Boston Logan Intl

Mon 11/17

12:20 pm-9:07 am

2 stops21h 47m

$298

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Sat 3/28

6:00 am-12:40 pm

1 stop5h 40m

Bangor

Wed 4/1

3:00 pm-11:40 pm

2 stops9h 40m

$299

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 11/17

5:24 pm-12:45 am

1 stop6h 21m

Boston Logan Intl

Mon 11/24

6:00 am-10:52 am

1 stop5h 52m

$308

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 11/3

5:24 pm-12:45 am

1 stop6h 21m

Boston Logan Intl

Mon 11/10

9:40 am-3:46 pm

1 stop7h 06m

$319

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 11/3

1:50 pm-5:20 pm

Nonstop2h 30m

Boston Logan Intl

Tue 11/4

10:20 am-12:25 pm

Nonstop3h 05m

$349

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 11/3

1:50 pm-9:35 pm

1 stop6h 45m

Boston Logan Intl

Mon 11/10

1:30 pm-3:35 pm

Nonstop3h 05m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 January. Flight prices, which tend to average around $374, 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 January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $381.

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 Tuesday. Travelers who choose to depart for Maine on a Tuesday will often find tickets for as low as $375. Flights from St. Louis to Maine on a Friday will generally be more expensive and average around $456. 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 $285. Flights at noon are often more expensive with an average ticket price of $436.

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 $424 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 $355 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 30m

Direct flights

Every day

Airports in Maine

1 airport
The fastest flight from St. Louis to Maine takes 2h 30m
Direct flights go from St. Louis to Maine every day.
There is 1 airport near Maine: 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
8,957 reviews
Search United Airlines flights
DeltaPriceFrom $229Free CancellationRating
7.9
7,969 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
SouthwestPriceFrom $308Free CancellationRating
8.0
4,233 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 11/6
Thu 11/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Maine

Popular cities in Maine

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $49
Flights to Los Angelesfrom $49
Flights to Miamifrom $63
Flights to Chicagofrom $49
Flights to Orlandofrom $58
Flights to Las Vegasfrom $48
Flights to San Franciscofrom $58
Flights to Washington, D.C.from $58
Flights to Bostonfrom $63
Flights to Atlantafrom $51
Flights to Dallasfrom $63
Flights to Seattlefrom $89