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$72+ Cheap flights from Maine to St. Louis (STL)

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — STL
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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Cheap flight deals from Maine to St. Louis

Keep the following information in mind while searching for Maine to St. Louis flight deals. Data was last updated febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$210
(Booking.com)

One-way from

$72
(Mytrip)

Popular in

April

Cheapest in

February

Average price

$250
Provider with most accurate pricing for Portland-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Portland-Lambert-St Louis flights.
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From Maine to Lambert-St Louis
Search Deals
One-way flight from Maine to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Maine to St. Louis

Cheapest flights from Maine to St. Louis
Explore the most affordable flight options available from Maine to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/109:29 pmPWM - STL
1 stop27h 37mFrontier
jue. 5/155:47 pmSTL - PWM
1 stop25h 53mFrontier
Deal found 2/20$210
This Delta deal was found by Cheapflights users on 2/19. 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. 4/85:10 amBGR - STL
1 stop7h 46mDelta
mar. 4/153:30 pmSTL - BGR
1 stop6h 49mDelta
Deal found 2/19$259
This Mytrip deal was found by Cheapflights users on 2/20. 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.
vie. 3/76:07 pmBGR - STL
2 stops16h 02mMultiple Airlines
mar. 3/115:38 pmSTL - BGR
1 stop17h 54mMultiple Airlines
Deal found 2/20$272
This Mytrip deal was found by Cheapflights users on 2/20. 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. 3/69:17 pmBOS - STL
2 stops22h 24mMultiple Airlines
lun. 3/106:30 amSTL - BOS
2 stops27h 50mMultiple Airlines
Deal found 2/20$298
This American Airlines deal was found by Cheapflights users on 2/20. 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. 3/61:39 pmBOS - STL
1 stop9h 35mAmerican Airlines
lun. 3/109:28 amSTL - BOS
Nonstop2h 33mAmerican Airlines
Deal found 2/20$303
This Mytrip deal was found by Cheapflights users on 2/20. 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.
sáb. 2/226:00 amBOS - STL
1 stop18h 43mFrontier
lun. 2/245:20 pmSTL - BOS
1 stop6h 24mFrontier
Deal found 2/20$313
This Mytrip deal was found by Cheapflights users on 2/19. 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.
sáb. 3/19:59 amBOS - STL
3 stops29h 43mSpirit Airlines
mar. 3/44:00 pmSTL - BOS
3 stops28h 16mSpirit Airlines
Deal found 2/19$315
This American Airlines deal was found by Cheapflights users on 2/19. 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.
sáb. 5/102:02 pmPWM - STL
1 stop8h 25mAmerican Airlines
mar. 5/134:37 pmSTL - PWM
1 stop6h 18mAmerican Airlines
Deal found 2/19$317
This Delta deal was found by Cheapflights users on 2/20. 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.
jue. 4/245:30 amBOS - STL
1 stop4h 58mDelta
sáb. 5/37:10 amSTL - BOS
1 stop6h 38mDelta
Deal found 2/20$318
This United Airlines deal was found by Cheapflights users on 2/20. 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.
mar. 3/116:00 amBOS - STL
2 stops9h 23mUnited Airlines
mié. 3/121:05 pmSTL - BOS
1 stop5h 20mUnited Airlines
Deal found 2/20$323
This Southwest deal was found by Cheapflights users on 2/20. 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.
jue. 3/66:55 amBOS - STL
Nonstop3h 05mSouthwest
jue. 3/68:50 pmSTL - BOS
Nonstop2h 30mSouthwest
Deal found 2/20$343
This Delta deal was found by Cheapflights users on 2/20. 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. 3/124:30 pmPWM - STL
1 stop5h 22mDelta
sáb. 3/156:50 amSTL - PWM
1 stop4h 26mDelta
Deal found 2/20$348

Find flights from Maine to St. Louis within your budget

Customize your flight search to find flights from Maine to St. Louis 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 febrero 20, 2025.

Fly from

Maine

Fly to

St. Louis

Route

Depart

Return

Price

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

sáb. 5/10

9:29 pm-12:06 am

1 stop27h 37m

Lambert-St Louis

jue. 5/15

5:47 pm-8:40 pm

1 stop25h 53m

$210

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

mar. 4/8

5:10 am-11:56 am

1 stop7h 46m

Lambert-St Louis

mar. 4/15

3:30 pm-11:19 pm

1 stop6h 49m

$259

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

vie. 3/7

6:07 pm-9:09 am

2 stops16h 02m

Lambert-St Louis

mar. 3/11

5:38 pm-12:32 pm

1 stop17h 54m

$272

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 3/6

9:17 pm-6:41 pm

2 stops22h 24m

Lambert-St Louis

lun. 3/10

6:30 am-11:20 am

2 stops27h 50m

$298

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 3/6

1:39 pm-10:14 pm

1 stop9h 35m

Lambert-St Louis

lun. 3/10

9:28 am-1:01 pm

Nonstop2h 33m

$303

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

sáb. 5/10

2:02 pm-9:27 pm

1 stop8h 25m

Lambert-St Louis

mar. 5/13

4:37 pm-11:55 pm

1 stop6h 18m

$317

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 4/24

5:30 am-9:28 am

1 stop4h 58m

Lambert-St Louis

sáb. 5/3

7:10 am-2:48 pm

1 stop6h 38m

$318

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

vie. 3/7

2:51 pm-9:09 am

2 stops19h 18m

Lambert-St Louis

dom. 3/9

5:38 pm-9:20 pm

2 stops26h 42m

$319

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mar. 3/11

6:00 am-2:23 pm

2 stops9h 23m

Lambert-St Louis

mié. 3/12

1:05 pm-7:25 pm

1 stop5h 20m

$323

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 4/10

6:00 am-11:46 pm

1 stop18h 46m

Lambert-St Louis

vie. 4/11

4:57 pm-12:47 am

1 stop6h 50m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 30 results
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Best time to book a flight from Maine to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Maine 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.

Travel insights for flights from Maine to St. Louis

Get recent, data-driven insights about flights from Maine to St. Louis including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Maine to St. Louis (average of $311). Flying from Maine to St. Louis in March is currently the most expensive (average of $356). 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 ME to STL?

Find hourly flight availability from Maine to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated febrero 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Maine to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Maine to St. Louis. 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 into for flights to St. Louis from Maine?

    If you book a flight to St. Louis from Maine, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

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

    One-way options have recently been found by users for as low as $72 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $114 and Delta from $119 one-way.

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

    Most travelers choose Boston Logan Intl - Lambert-St Louis, Portland - Lambert-St Louis or Bangor - Lambert-St Louis when deciding on the best route from Maine to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maine to St. Louis 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 Maine to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Maine to St. Louis (average of $311). Flying from Maine to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Maine?

Book flights to Maine if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for Maine to St. Louis

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

Discover the top 4 airlines that operate flights from Maine to St. Louis. 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$241Average$420FlexibilityNo cancel feeOn-time71%
DeltaCheapest$273Average$423FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$341Average$478FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$351Average$416FlexibilityNo cancel feeOn-time63%
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