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St. Louis

$83+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$317
(Delta)

One-way from

$83
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$396
From Maine to Lambert-St Louis
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One-way flight from Maine to Lambert-St Louis
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Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 7/26:03 amPWM - STL
1 stop6h 28mDelta
Sat 7/51:30 pmSTL - PWM
1 stop7h 07mDelta
Deal found 6/11$317
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Tue 7/89:58 amBOS - STL
3 stops25h 31mSpirit Airlines
Tue 7/155:26 pmSTL - BOS
1 stop29h 22mSpirit Airlines
Deal found 6/11$320
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Mon 7/72:26 pmBOS - STL
3 stops29h 15mMultiple Airlines
Wed 7/911:24 amSTL - BOS
2 stops23h 07mMultiple Airlines
Deal found 6/10$321
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 7/306:00 amBOS - STL
1 stop6h 34mDelta
Mon 8/46:04 pmSTL - BOS
1 stop13h 56mDelta
Deal found 6/10$324
This Sun Country Air deal was found by Cheapflights users on 6/12. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1411:38 amBOS - STL
1 stop24h 52mSun Country Air
Sun 8/178:00 amSTL - BOS
1 stop25h 37mSun Country Air
Deal found 6/12$325
This Southwest deal was found by Cheapflights users on 6/10. 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.
Tue 7/85:25 amBOS - STL
1 stop7h 45mSouthwest
Tue 7/152:50 pmSTL - BOS
Nonstop2h 35mSouthwest
Deal found 6/10$327
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 7/46:59 amBOS - STL
1 stop10h 29mAmerican Airlines
Tue 7/86:25 pmSTL - BOS
Nonstop2h 42mAmerican Airlines
Deal found 6/11$332
This Frontier deal was found by Cheapflights users on 6/10. 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.
Tue 7/19:01 amBOS - STL
2 stops15h 52mFrontier
Thu 7/108:44 pmSTL - BOS
1 stop13h 13mFrontier
Deal found 6/10$337
This Delta deal was found by Cheapflights users on 6/9. 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 7/32:50 pmBGR - STL
1 stop7h 03mDelta
Sat 7/122:00 pmSTL - BGR
1 stop6h 01mDelta
Deal found 6/9$351
This Southwest deal was found by Cheapflights users on 6/11. 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.
Fri 8/85:50 amPWM - STL
1 stop6h 40mSouthwest
Sat 8/2312:30 pmSTL - PWM
1 stop8h 30mSouthwest
Deal found 6/11$357
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 7/246:15 amPWM - STL
1 stop7h 28mAmerican Airlines
Mon 7/284:28 pmSTL - PWM
1 stop5h 17mAmerican Airlines
Deal found 6/10$387
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 10/158:00 amBOS - STL
1 stop8h 44mUnited Airlines
Sun 10/1912:25 pmSTL - BOS
1 stop20h 31mUnited Airlines
Deal found 6/10$405

Cheapflights Fare Finder

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 June 12, 2025.
Use the filters below to find and compare flights from Maine to St. Louis that are best for you.

Fly from

Maine

Fly to

St. Louis

Route

Depart

Return

Price

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Wed 7/2

6:03 am-11:31 am

1 stop6h 28m

Lambert-St Louis

Sat 7/5

1:30 pm-9:37 pm

1 stop7h 07m

$317

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 7/8

9:58 am-10:29 am

3 stops25h 31m

Lambert-St Louis

Tue 7/15

5:26 pm-11:48 pm

1 stop29h 22m

$320

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 7/7

2:26 pm-6:41 pm

3 stops29h 15m

Lambert-St Louis

Wed 7/9

11:24 am-11:31 am

2 stops23h 07m

$321

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 7/30

8:05 am-12:34 pm

1 stop5h 29m

Lambert-St Louis

Tue 8/5

10:46 am-10:42 pm

1 stop10h 56m

$324

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 8/14

11:38 am-11:30 am

1 stop24h 52m

Lambert-St Louis

Sun 8/17

8:00 am-10:37 am

1 stop25h 37m

$325

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 7/8

5:25 am-12:10 pm

1 stop7h 45m

Lambert-St Louis

Tue 7/15

2:50 pm-6:25 pm

Nonstop2h 35m

$327

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 7/4

6:59 am-4:28 pm

1 stop10h 29m

Lambert-St Louis

Tue 7/8

6:25 pm-10:07 pm

Nonstop2h 42m

$332

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 7/1

9:01 am-11:53 pm

2 stops15h 52m

Lambert-St Louis

Thu 7/10

8:44 pm-10:57 am

1 stop13h 13m

$337

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

Thu 7/3

2:50 pm-8:53 pm

1 stop7h 03m

Lambert-St Louis

Sat 7/12

2:00 pm-9:01 pm

1 stop6h 01m

$351

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 8/8

5:50 am-11:30 am

1 stop6h 40m

Lambert-St Louis

Sat 8/23

12:30 pm-10:00 pm

1 stop8h 30m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 35 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.

Cheapflights Insights

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

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 June 12, 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 June 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $83 on Spirit Airlines. Other airlines that offer cheap prices include American Airlines from $111 and Frontier from $141 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$258Average$403FlexibilityNo cancel feeOn-time71%
DeltaCheapest$268Average$390FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$341Average$456FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$351Average$456FlexibilityNo cancel feeOn-time63%

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