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Maine

$127+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PWM
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheap 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 julio 30, 2025.

Round-trip from

$257
(Mytrip)

One-way from

$127
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$396
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. 5% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julio 30, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1812:05 pmSTL - BOS
3 stops22h 08mSpirit Airlines
dom. 9/216:20 amBOS - STL
1 stop5h 30mSpirit Airlines
Deal found 7/29$257
This American Airlines deal was found by Cheapflights users on 7/30. 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.
jue. 9/116:00 pmSTL - BGR
1 stop4h 48mAmerican Airlines
mar. 9/165:39 amBGR - STL
1 stop5h 42mAmerican Airlines
Deal found 7/30$259
This American Airlines deal was found by Cheapflights users on 7/29. 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.
lun. 9/226:00 amSTL - BOS
1 stop7h 49mAmerican Airlines
lun. 9/224:10 pmBOS - STL
Nonstop3h 05mAmerican Airlines
Deal found 7/29$261
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1812:05 pmSTL - BOS
1 stop9h 38mMultiple Airlines
dom. 9/216:20 amBOS - STL
3 stops13h 16mMultiple Airlines
Deal found 7/28$263
This Delta deal was found by Cheapflights users on 7/29. 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.
mar. 9/2311:04 amSTL - BGR
2 stops11h 25mDelta
mié. 10/15:23 amBGR - STL
1 stop7h 56mDelta
Deal found 7/29$264
This Delta deal was found by Cheapflights users on 7/29. 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.
sáb. 9/61:26 pmSTL - BOS
1 stop7h 26mDelta
dom. 9/75:15 amBOS - STL
1 stop5h 17mDelta
Deal found 7/29$267
This American Airlines deal was found by Cheapflights users on 7/30. 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.
lun. 9/84:55 pmSTL - PWM
1 stop5h 10mAmerican Airlines
sáb. 9/136:15 amPWM - STL
1 stop16h 38mAmerican Airlines
Deal found 7/30$297
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/911:10 amSTL - BOS
2 stops7h 00mSouthwest
mié. 9/103:15 pmBOS - STL
1 stop7h 25mSouthwest
Deal found 7/29$302
This Delta deal was found by Cheapflights users on 7/29. 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.
mié. 9/1010:45 amSTL - PWM
2 stops12h 18mDelta
mié. 9/176:00 amPWM - STL
1 stop7h 19mDelta
Deal found 7/29$302
This United Airlines deal was found by Cheapflights users on 7/28. 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.
sáb. 10/46:00 amSTL - BOS
1 stop6h 25mUnited Airlines
dom. 10/56:00 amBOS - STL
1 stop5h 49mUnited Airlines
Deal found 7/28$307
This United Airlines deal was found by Cheapflights users on 7/29. 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.
lun. 9/226:35 amSTL - BGR
2 stops9h 51mUnited Airlines
lun. 9/299:35 amBGR - STL
1 stop5h 52mUnited Airlines
Deal found 7/29$338
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/82:45 pmSTL - PWM
2 stops7h 35mSouthwest
vie. 9/123:30 pmPWM - STL
1 stop4h 40mSouthwest
Deal found 7/30$347

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 julio 30, 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

jue. 9/18

12:05 pm-11:13 am

3 stops22h 08m

Boston Logan Intl

dom. 9/21

6:20 am-10:50 am

1 stop5h 30m

$257

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

jue. 9/11

6:00 pm-11:48 pm

1 stop4h 48m

Bangor

mar. 9/16

5:39 am-10:21 am

1 stop5h 42m

$259

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

lun. 9/22

6:00 am-2:49 pm

1 stop7h 49m

Boston Logan Intl

lun. 9/22

4:10 pm-6:15 pm

Nonstop3h 05m

$261

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

jue. 9/18

12:05 pm-10:43 pm

1 stop9h 38m

Boston Logan Intl

dom. 9/21

6:20 am-6:36 pm

3 stops13h 16m

$263

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

mar. 9/23

1:26 pm-11:29 pm

2 stops9h 03m

Bangor

sáb. 9/27

6:00 am-11:22 am

1 stop6h 22m

$264

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

sáb. 9/6

1:26 pm-9:52 pm

1 stop7h 26m

Boston Logan Intl

dom. 9/7

5:15 am-9:32 am

1 stop5h 17m

$267

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

lun. 9/8

6:00 am-11:44 am

1 stop4h 44m

Portland

sáb. 9/13

8:40 am-2:14 pm

1 stop6h 34m

$297

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

mar. 9/9

11:10 am-7:10 pm

2 stops7h 00m

Boston Logan Intl

mié. 9/10

3:15 pm-9:40 pm

1 stop7h 25m

$302

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

mié. 9/10

10:45 am-12:03 am

2 stops12h 18m

Portland

mié. 9/17

5:00 pm-8:34 pm

1 stop4h 34m

$302

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

sáb. 10/4

6:00 am-1:25 pm

1 stop6h 25m

Boston Logan Intl

dom. 10/5

6:00 am-10:49 am

1 stop5h 49m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 29 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, January is the cheapest month in which you can book a flight from St. Louis to Maine (average of $296). Flying from St. Louis to Maine in July is currently the most expensive (average of $394). 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 julio 30, 2025.

When flying from St. Louis to Maine, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 julio 30, 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
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $127. However, be on the lookout for offers from American Airlines and Delta, 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 - Portland and Lambert-St Louis - Bangor.

  • 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, January is the cheapest month in which you can book a flight from St. Louis to Maine (average of $296). Flying from St. Louis to Maine in July is currently the most expensive (average of $394). 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$201Average$382FlexibilityNo cancel feeOn-time69%
DeltaCheapest$229Average$359FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$396FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$308Average$451FlexibilityNo cancel feeOn-time63%

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