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Maine

$68+ Cheap flights from St. Louis (STL) to Maine

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PWM
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from St. Louis to Maine

Cheapest flights from St. Louis to Maine
Explore the most affordable flight options available from St. Louis to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:37 pmSTL - BOS
1 stop12h 44mFrontier
Thu 1/811:06 amBOS - STL
1 stop12h 27mFrontier
Deal found 12/16$282
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:05 amSTL - PWM
2 stops9h 27mDelta
Wed 12/315:45 amPWM - STL
1 stop7h 36mDelta
Deal found 12/17$286
This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:50 pmSTL - BOS
Nonstop2h 39mAmerican Airlines
Tue 1/612:55 pmBOS - STL
1 stop9h 20mAmerican Airlines
Deal found 12/16$288
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:37 pmSTL - BOS
1 stop12h 44mFrontier
Mon 1/1211:41 amBOS - STL
1 stop11h 52mFrontier
Deal found 12/16$303
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:37 pmSTL - BOS
1 stop12h 44mFrontier
Sun 1/116:00 amBOS - STL
1 stop9h 48mFrontier
Deal found 12/16$317
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:48 amSTL - BOS
2 stops23h 02mMultiple Airlines
Tue 1/612:29 pmBOS - STL
1 stop11h 04mMultiple Airlines
Deal found 12/17$338
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:27 pmSTL - BOS
2 stops31h 52mMultiple Airlines
Tue 1/612:29 pmBOS - STL
1 stop11h 04mMultiple Airlines
Deal found 12/17$346
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:15 amSTL - PWM
1 stop5h 25mUnited Airlines
Wed 12/317:01 pmPWM - STL
1 stop5h 56mUnited Airlines
Deal found 12/17$362
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:48 amSTL - BOS
2 stops23h 02mMultiple Airlines
Sat 1/311:37 amBOS - STL
1 stop23h 03mMultiple Airlines
Deal found 12/17$366
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:48 amSTL - BOS
1 stop22h 20mFrontier
Sat 1/311:37 amBOS - STL
1 stop23h 03mFrontier
Deal found 12/17$371
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:27 pmSTL - BOS
2 stops31h 52mFrontier
Sat 1/36:00 amBOS - STL
1 stop28h 40mFrontier
Deal found 12/17$374
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:15 amSTL - PWM
1 stop5h 25mUnited Airlines
Sat 1/35:30 amPWM - STL
1 stop5h 38mUnited Airlines
Deal found 12/15$502

Find flight deals from St. Louis to Maine

Keep the following information in mind while searching for St. Louis to Maine flight deals. Data was last updated December 18, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$68
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$427
Provider with most accurate pricing for Lambert-St Louis-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Boston Logan Intl flights.
Search Deals
From Lambert-St Louis to Maine
Search Deals
One-way flight from Lambert-St Louis to Maine
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from St. Louis to Maine that are best for you.

Fly from

St. Louis

Fly to

Maine

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 2/25

3:49 pm-11:48 am

1 stop18h 59m

Boston Logan Intl

Tue 3/3

6:00 am-6:51 am

1 stop25h 51m

$154

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 2/25

3:49 pm-11:48 am

1 stop18h 59m

Boston Logan Intl

Sun 3/1

4:22 pm-6:51 am

2 stops15h 29m

$212

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 1/23

8:22 pm-2:38 pm

2 stops17h 16m

Boston Logan Intl

Sun 1/25

3:43 pm-9:21 am

1 stop18h 38m

$221

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 2/26

10:11 pm-1:13 am

2 stops26h 02m

Boston Logan Intl

Sat 2/28

12:43 pm-11:59 pm

1 stop12h 16m

$241

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-8:50 pm

1 stop8h 33m

$279

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 1/17

8:45 am-12:20 pm

Nonstop2h 35m

Boston Logan Intl

Sun 1/18

6:25 am-8:45 am

Nonstop3h 20m

$297

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 1/1

5:00 am-11:06 am

1 stop5h 06m

Boston Logan Intl

Thu 1/8

9:51 am-6:14 pm

1 stop9h 23m

$307

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. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 1/17

10:19 am-3:57 pm

1 stop4h 38m

Boston Logan Intl

Sun 1/18

11:00 am-4:39 pm

1 stop6h 39m

$317

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 1/20

5:55 pm-9:25 pm

Nonstop2h 30m

Boston Logan Intl

Wed 1/21

6:25 am-8:45 am

Nonstop3h 20m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 43 results
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Best time to book a flight from St. Louis to Maine

Have a flexible travel schedule? Discover the best time to fly to Maine from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Maine

What is the cheapest month to book a flight from St. Louis to Maine?

Currently, July is the cheapest month in which you can book a flight from St. Louis to Maine (average of $232). Flying from St. Louis to Maine in January is currently the most expensive (average of $319). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to ME?

Find hourly flight availability from St. Louis to Maine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from St. Louis to Maine is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 47% on airfare.

Reviews of airlines servicing Maine

Get insights into the airlines that provide service to Maine. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Maine. Reviews last updated December 18, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Maine to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,091 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Maine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Maine?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Maine.

  • How long is the flight from St. Louis to Maine?

    Airlines like Delta, Southwest, and American Airlines fly from St. Louis to Maine in about 2h 35m. The time it takes to get you to your destination can typically vary by up to 2h 30m. Airlines will cover a distance of 1043 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from St. Louis to Maine one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $142. However, be on the lookout for offers from Delta and Southwest, as they are both options that can get you from St. Louis to Maine for a low price.

  • What are the most popular routes from St. Louis to Maine?

    The most popular flight routes from St. Louis to Maine are Lambert-St Louis - Boston Logan Intl, Lambert-St Louis - Bangor and Lambert-St Louis - Portland.

  • Can I find deals for flights from St. Louis to Maine that include hotel bookings?

    Yes. In addition to deals on St. Louis to Maine flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Maine?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Maine.

  • Can I find deals for business class flights from St. Louis to Maine?

    Yes. Cheapflights offers flight deals from St. Louis to Maine by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Maine?

    Currently, July is the cheapest month in which you can book a flight from St. Louis to Maine (average of $232). Flying from St. Louis to Maine in January is currently the most expensive (average of $319). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Maine

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from St. Louis to Maine

Discover the top 4 airlines that operate flights from St. Louis to Maine. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$201Average$479FlexibilityNo cancel feeOn-time69%
DeltaCheapest$229Average$356FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$403FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$284Average$512FlexibilityNo cancel feeOn-time63%

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