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

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $92. However, be on the lookout for offers from American Airlines and Frontier, 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.

What are the most popular airlines that fly from St. Louis to Maine?

When booking a flight from St. Louis to Maine, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

What is the cheapest month to fly from St. Louis to Maine?

Flights from St. Louis to Maine lean towards being more expensive in March. Prices are generally better when you fly from St. Louis to Maine in November, with the cheapest ticket starting at $316.

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.

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.

$92+ Flights from St. Louis to Maine

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Cheap flight deals from St. Louis to Maine

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$248 (Booking.com)
One-way from	$92 (Booking.com)
Popular in	March
Cheapest in	November
Average price	$466

Provider with most accurate pricing for Lambert-St Louis-Portland flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Portland 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. 0% potential increase in price ($2 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 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 March 28, 2025.

Fri 4/114:57 pmSTL - PWM

1 stop15h 15mFrontier

Tue 4/153:05 pmPWM - STL

1 stop9h 41mFrontier

Deal found 3/27

$248

Wed 8/202:39 pmSTL - BGR

1 stop4h 52mAmerican Airlines

Sat 8/235:53 amBGR - STL

1 stop4h 58mAmerican Airlines

Deal found 3/26

$259

Thu 5/1510:10 amSTL - BOS

1 stop12h 19mMultiple Airlines

Mon 5/1910:30 amBOS - STL

3 stops26h 15mMultiple Airlines

Deal found 3/27

$263

Thu 5/16:00 amSTL - BOS

1 stop6h 20mDelta

Mon 5/56:50 pmBOS - STL

1 stop5h 46mDelta

Deal found 3/27

$268

Thu 5/1510:10 amSTL - BOS

1 stop12h 19mSpirit Airlines

Thu 7/176:10 amBOS - STL

1 stop13h 22mSpirit Airlines

Deal found 3/27

$284

Tue 5/136:00 amSTL - BOS

1 stop8h 10mAmerican Airlines

Sat 5/1711:46 amBOS - STL

Nonstop3h 04mAmerican Airlines

Deal found 3/27

$288

Thu 4/174:57 pmSTL - BOS

1 stop6h 50mFrontier

Sun 4/206:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 3/27

$298

Mon 6/25:00 amSTL - BOS

1 stop18h 59mUnited Airlines

Tue 6/105:30 amBOS - STL

2 stops7h 50mUnited Airlines

Deal found 3/27

$310

Tue 5/63:30 pmSTL - PWM

1 stop18h 23mDelta

Fri 5/166:05 amPWM - STL

1 stop15h 43mDelta

Deal found 3/25

$313

Wed 8/209:00 amSTL - BGR

1 stop5h 31mDelta

Sat 8/235:00 pmBGR - STL

2 stops7h 39mDelta

Deal found 3/26

$314

Wed 9/106:06 amSTL - PWM

1 stop4h 23mAmerican Airlines

Wed 9/178:03 amPWM - STL

1 stop4h 50mAmerican Airlines

Deal found 3/27

$317

Wed 8/206:35 amSTL - PWM

2 stops6h 50mUnited Airlines

Wed 8/272:14 pmPWM - STL

2 stops8h 18mUnited Airlines

Deal found 3/27

$339

Best flights from St. Louis to Maine
Discover carefully curated flight deals from St. Louis to Maine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2025.

Fri 4/114:57 pmSTL - PWM

1 stop15h 15mFrontier

Tue 4/153:05 pmPWM - STL

1 stop9h 41mFrontier

Deal found 3/27

$248

Wed 8/202:39 pmSTL - BGR

1 stop4h 52mAmerican Airlines

Sat 8/235:53 amBGR - STL

1 stop4h 58mAmerican Airlines

Deal found 3/26

$259

Thu 5/1510:10 amSTL - BOS

1 stop12h 19mMultiple Airlines

Mon 5/1910:30 amBOS - STL

3 stops26h 15mMultiple Airlines

Deal found 3/27

$263

Thu 5/16:00 amSTL - BOS

1 stop6h 20mDelta

Mon 5/56:50 pmBOS - STL

1 stop5h 46mDelta

Deal found 3/27

$268

Thu 5/1510:10 amSTL - BOS

1 stop12h 19mSpirit Airlines

Thu 7/176:10 amBOS - STL

1 stop13h 22mSpirit Airlines

Deal found 3/27

$284

Mon 6/25:00 amSTL - BOS

1 stop18h 59mUnited Airlines

Tue 6/105:30 amBOS - STL

2 stops7h 50mUnited Airlines

Deal found 3/27

$310

Sat 5/246:45 pmSTL - BOS

Nonstop2h 30mSouthwest

Tue 5/277:05 amBOS - STL

Nonstop2h 55mSouthwest

Deal found 3/27

$347

Tue 5/136:00 amSTL - BOS

1 stop8h 10mAmerican Airlines

Sat 5/1711:46 amBOS - STL

Nonstop3h 04mAmerican Airlines

Deal found 3/27

$288

Thu 4/174:57 pmSTL - BOS

1 stop6h 50mFrontier

Sun 4/206:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 3/27

$298

Tue 5/63:30 pmSTL - PWM

1 stop18h 23mDelta

Fri 5/166:05 amPWM - STL

1 stop15h 43mDelta

Deal found 3/25

$313

Wed 8/206:35 amSTL - PWM

2 stops6h 50mUnited Airlines

Wed 8/272:14 pmPWM - STL

2 stops8h 18mUnited Airlines

Deal found 3/27

$339

Wed 8/209:00 amSTL - BGR

1 stop5h 31mDelta

Sat 8/235:00 pmBGR - STL

2 stops7h 39mDelta

Deal found 3/26

$314

Last-minute flights from St. Louis to Maine
Discover last-minute flight deals from St. Louis to Maine. Data last updated March 28, 2025 and is based on user searches.

Tue 4/14:57 pmSTL - BOS

1 stop6h 50mFrontier

Fri 4/46:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 3/27

$278

Wed 4/24:57 pmSTL - BOS

1 stop6h 50mFrontier

Thu 4/36:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 3/27

$278

Thu 4/39:50 amSTL - BOS

3 stops29h 35mMultiple Airlines

Sun 4/67:26 pmBOS - STL

2 stops24h 15mMultiple Airlines

Deal found 3/27

$315

Thu 4/37:29 amSTL - BOS

1 stop8h 38mAmerican Airlines

Sun 4/67:20 amBOS - STL

1 stop8h 25mAmerican Airlines

Deal found 3/27

$605

Thu 4/38:50 pmSTL - BOS

Nonstop2h 30mSouthwest

Sun 4/67:35 amBOS - STL

Nonstop3h 10mSouthwest

Deal found 3/27

$761

Mon 4/74:45 pmSTL - BOS

1 stop12h 13mUnited Airlines

Sun 4/137:43 amBOS - STL

1 stop8h 02mUnited Airlines

Deal found 3/28

$643

Mon 4/76:44 amSTL - BOS

2 stops26h 51mAlaska Airlines

Tue 4/87:59 pmBOS - STL

2 stops28h 17mAlaska Airlines

Deal found 3/27

$924

Thu 4/109:50 amSTL - BOS

2 stops7h 53mMultiple Airlines

Mon 4/143:36 pmBOS - STL

3 stops28h 05mMultiple Airlines

Deal found 3/27

$273

Thu 4/106:13 amSTL - BGR

1 stop4h 53mAmerican Airlines

Sun 9/215:43 amBGR - STL

1 stop5h 10mAmerican Airlines

Deal found 3/27

$319

Thu 4/105:45 amSTL - PWM

1 stop4h 20mSouthwest

Mon 4/145:50 amPWM - STL

1 stop5h 55mSouthwest

Deal found 3/26

$447

Thu 4/106:00 amSTL - PWM

2 stops8h 50mDelta

Mon 4/142:59 pmPWM - STL

2 stops9h 37mDelta

Deal found 3/26

$457

Fri 4/114:57 pmSTL - PWM

1 stop15h 15mFrontier

Tue 4/153:05 pmPWM - STL

1 stop9h 41mFrontier

Deal found 3/27

$248

One-way flights from St. Louis to Maine
Search for one-way flight options from St. Louis to Maine. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Thu 5/810:10 amSTL - BOS

1 stop12h 19mSpirit Airlines

Deal found 3/27

$92

Tue 4/297:45 amSTL - BOS

1 stop7h 50mAmerican Airlines

Deal found 3/27

$97

Mon 4/144:57 pmSTL - BOS

1 stop6h 50mFrontier

Deal found 3/27

$109

Tue 4/293:40 pmSTL - BOS

2 stops7h 19mUnited Airlines

Deal found 3/27

$114

Thu 5/89:50 amSTL - BOS

2 stops22h 45mMultiple Airlines

Deal found 3/27

$124

Tue 5/276:00 amSTL - BOS

1 stop7h 16mDelta

Deal found 3/27

$140

Sun 5/48:00 amSTL - BOS

1 stop14h 04mSun Country Air

Deal found 3/27

$143

Tue 4/296:50 amSTL - PWM

1 stop4h 17mDelta

Deal found 3/26

$159

Fri 5/95:00 amSTL - BGR

1 stop5h 42mAmerican Airlines

Deal found 3/28

$162

Mon 4/287:40 pmSTL - BOS

Nonstop2h 35mSouthwest

Deal found 3/27

$172

Thu 8/284:23 pmSTL - PWM

1 stop4h 31mAmerican Airlines

Deal found 3/26

$194

Sun 4/275:41 pmSTL - PWM

1 stop24h 30mFrontier

Deal found 3/27

$200

Cheapflights Fare Finder

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. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Fri 4/11

4:57 pm-9:12 am

1 stop15h 15m

Portland

Tue 4/15

3:05 pm-11:46 pm

1 stop9h 41m

$248

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Wed 8/20

2:39 pm-8:31 pm

1 stop4h 52m

Bangor

Sat 8/23

5:53 am-9:51 am

1 stop4h 58m

$259

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 5/15

10:10 am-11:29 pm

1 stop12h 19m

Boston Logan Intl

Mon 5/19

10:30 am-11:45 am

3 stops26h 15m

$263

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 5/1

6:00 am-1:20 pm

1 stop6h 20m

Boston Logan Intl

Mon 5/5

6:50 pm-11:36 pm

1 stop5h 46m

$268

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 5/15

10:10 am-11:29 pm

1 stop12h 19m

Boston Logan Intl

Thu 7/17

6:10 am-6:32 pm

1 stop13h 22m

$284

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 5/13

6:00 am-3:10 pm

1 stop8h 10m

Boston Logan Intl

Sat 5/17

11:46 am-1:50 pm

Nonstop3h 04m

$288

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 4/17

4:57 pm-12:47 am

1 stop6h 50m

Boston Logan Intl

Sun 4/20

6:00 am-11:46 pm

1 stop18h 46m

$298

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 6/2

5:00 am-12:59 am

1 stop18h 59m

Boston Logan Intl

Tue 6/10

5:30 am-12:20 pm

2 stops7h 50m

$310

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Tue 5/6

3:30 pm-10:53 am

1 stop18h 23m

Portland

Fri 5/16

6:05 am-8:48 pm

1 stop15h 43m

$313

St. LouisBangor

STL - BGR

STLBGR

Lambert-St Louis

Wed 8/20

9:00 am-3:31 pm

1 stop5h 31m

Bangor

Sat 8/23

5:00 pm-11:39 pm

2 stops7h 39m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 34 results

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 April is currently the most expensive (average of $423). 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?

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.

Rainfall in Maine by month

In terms of precipitation, rainfall in Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Maine when rainfall is around 2.9 in.

Temperature in Maine by month

If weather is an important factor for your trip to Maine, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Maine

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from St. Louis to Maine to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines

8.0

Very good

9,798 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,896 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

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 Spirit Airlines, with whom users have recently found tickets for as low as $92. However, be on the lookout for offers from American Airlines and Frontier, 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, 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 April is currently the most expensive (average of $423). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from St. Louis to Maine

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$153	Average$285	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$258	Average$405	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$258	Average$425	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$316	Average$426	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$377	Average$522	FlexibilityNo cancel fee	On-time69%

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$92+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Maine with Cheapflights

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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 March 28, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Maine

Cheapest flights from St. Louis to MaineExplore 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 March 28, 2025.

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 March 28, 2025.

Cheapflights Fare Finder

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

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.

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?

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 March 28, 2025.

Rainfall in Maine by month

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

Temperature in Maine by month

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

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 March 28, 2025.

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from St. Louis to Maine to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Maine

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Maine

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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 March 28, 2025.