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 $116 on Frontier. Other airlines that offer cheap prices include American Airlines from $152 and Spirit Airlines from $153 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.

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

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Maine to St. Louis.

How far in advance should I book a flight from Maine to St. Louis?

Travelers have found it’s best to book a flight 11 days in advance to save up to 145% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 11 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Maine to St. Louis 1-2 weeks in advance for as low as $228, or $639 for flights within the next 24 hours.

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

Our data shows that February tends to be the cheapest month to fly to St. Louis from Maine. Users have commonly found prices around $428 for the month, but tickets can be as low as $213. Due to multiple factors, prepare for potentially higher prices in December.

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.

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.

$116+ Flights from Maine to St. Louis - Compare & Save Big

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Cheap flight deals from Maine to St. Louis

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$259 (American Airlines)
One-way from	$116 (Mytrip)
Popular in	December
Cheapest in	February
Average price	$526

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

Search Deals

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. 3% potential increase in price ($16 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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 abril 29, 2025.

mar. 6/245:43 pmBGR - STL

1 stop7h 11mAmerican Airlines

vie. 7/410:35 amSTL - BGR

1 stop4h 47mAmerican Airlines

Deal found 4/27

$259

mié. 5/215:50 amPWM - STL

1 stop4h 52mAmerican Airlines

mié. 5/2810:25 amSTL - PWM

1 stop5h 26mAmerican Airlines

Deal found 4/28

$285

mié. 5/281:40 pmPWM - STL

2 stops10h 58mDelta

mié. 6/43:40 pmSTL - PWM

1 stop6h 41mDelta

Deal found 4/28

$290

jue. 5/223:49 pmBOS - STL

3 stops29h 21mMultiple Airlines

dom. 5/2510:10 amSTL - BOS

2 stops19h 53mMultiple Airlines

Deal found 4/29

$331

jue. 6/125:35 amBOS - STL

1 stop5h 08mDelta

lun. 6/236:00 amSTL - BOS

1 stop5h 20mDelta

Deal found 4/27

$333

mié. 6/186:10 amBOS - STL

2 stops35h 54mSpirit Airlines

dom. 6/226:12 pmSTL - BOS

2 stops28h 07mSpirit Airlines

Deal found 4/28

$341

sáb. 8/2310:35 amBOS - STL

Nonstop3h 02mAmerican Airlines

lun. 8/259:45 amSTL - BOS

Nonstop2h 40mAmerican Airlines

Deal found 4/29

$343

lun. 7/77:45 amBOS - STL

1 stop5h 42mUnited Airlines

mié. 7/97:30 amSTL - BOS

1 stop5h 10mUnited Airlines

Deal found 4/28

$346

mar. 6/33:00 pmBOS - STL

2 stops6h 00mSouthwest

sáb. 6/75:55 pmSTL - BOS

1 stop4h 25mSouthwest

Deal found 4/29

$348

mié. 5/286:15 amPWM - STL

1 stop7h 05mSouthwest

sáb. 5/3112:20 pmSTL - PWM

2 stops10h 05mSouthwest

Deal found 4/28

$381

mar. 6/245:08 amBGR - STL

1 stop7h 23mDelta

vie. 7/46:00 amSTL - BGR

2 stops9h 08mDelta

Deal found 4/27

$434

mar. 6/2412:15 pmPWM - STL

2 stops11h 30mUnited Airlines

sáb. 6/287:55 amSTL - PWM

2 stops9h 18mUnited Airlines

Deal found 4/28

$508

Best flights from Maine to St. Louis
Discover carefully curated flight deals from Maine to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 29, 2025.

mar. 6/245:43 pmBGR - STL

1 stop7h 11mAmerican Airlines

vie. 7/410:35 amSTL - BGR

1 stop4h 47mAmerican Airlines

Deal found 4/27

$259

mié. 5/281:40 pmPWM - STL

2 stops10h 58mDelta

mié. 6/43:40 pmSTL - PWM

1 stop6h 41mDelta

Deal found 4/28

$290

jue. 5/223:49 pmBOS - STL

3 stops29h 21mMultiple Airlines

dom. 5/2510:10 amSTL - BOS

2 stops19h 53mMultiple Airlines

Deal found 4/29

$331

jue. 8/141:55 pmBOS - STL

1 stop18h 54mSpirit Airlines

dom. 8/178:44 amSTL - BOS

1 stop13h 56mSpirit Airlines

Deal found 4/29

$341

sáb. 5/245:55 pmBOS - STL

Nonstop3h 05mSouthwest

mié. 5/287:00 pmSTL - BOS

Nonstop2h 30mSouthwest

Deal found 4/29

$343

mar. 5/208:05 amBOS - STL

2 stops8h 42mUnited Airlines

mar. 5/275:00 amSTL - BOS

2 stops8h 16mUnited Airlines

Deal found 4/29

$367

mié. 5/215:50 amPWM - STL

1 stop4h 52mAmerican Airlines

mié. 5/2810:25 amSTL - PWM

1 stop5h 26mAmerican Airlines

Deal found 4/28

$285

vie. 7/412:00 pmBOS - STL

1 stop7h 05mDelta

lun. 7/76:04 pmSTL - BOS

1 stop4h 49mDelta

Deal found 4/29

$340

jue. 5/226:30 amBOS - STL

Nonstop3h 10mAmerican Airlines

dom. 5/254:01 pmSTL - BOS

1 stop6h 30mAmerican Airlines

Deal found 4/29

$333

mié. 5/286:15 amPWM - STL

1 stop7h 05mSouthwest

sáb. 5/3112:20 pmSTL - PWM

2 stops10h 05mSouthwest

Deal found 4/28

$381

mar. 6/245:08 amBGR - STL

1 stop7h 23mDelta

vie. 7/46:00 amSTL - BGR

2 stops9h 08mDelta

Deal found 4/27

$434

mar. 6/2412:15 pmPWM - STL

2 stops11h 30mUnited Airlines

sáb. 6/287:55 amSTL - PWM

2 stops9h 18mUnited Airlines

Deal found 4/28

$508

Last-minute flights from Maine to St. Louis
Discover last-minute flight deals from Maine to St. Louis. Data last updated abril 29, 2025 and is based on user searches.

lun. 5/57:48 pmBOS - STL

2 stops23h 53mMultiple Airlines

jue. 5/89:50 amSTL - BOS

2 stops22h 45mMultiple Airlines

Deal found 4/27

$333

lun. 5/56:30 pmBOS - STL

Nonstop3h 05mSouthwest

mar. 5/67:00 pmSTL - BOS

Nonstop2h 30mSouthwest

Deal found 4/28

$596

lun. 5/57:00 amBOS - STL

1 stop32h 08mAlaska Airlines

vie. 5/93:08 pmSTL - BOS

1 stop25h 22mAlaska Airlines

Deal found 4/28

$782

mar. 5/61:00 pmBOS - STL

1 stop8h 51mDelta

mié. 5/146:00 amSTL - BOS

1 stop9h 20mDelta

Deal found 4/28

$493

mié. 5/76:35 amBOS - STL

1 stop7h 32mAmerican Airlines

mié. 5/72:20 pmSTL - BOS

Nonstop2h 44mAmerican Airlines

Deal found 4/28

$345

vie. 5/911:07 amPWM - STL

1 stop9h 40mAmerican Airlines

jue. 5/157:32 amSTL - PWM

1 stop7h 04mAmerican Airlines

Deal found 4/29

$560

vie. 5/98:25 pmBOS - STL

1 stop28h 33mUnited Airlines

lun. 5/128:48 amSTL - BOS

1 stop13h 52mUnited Airlines

Deal found 4/28

$583

vie. 5/96:35 amPWM - STL

2 stops11h 00mDelta

jue. 5/156:00 amSTL - PWM

1 stop5h 57mDelta

Deal found 4/29

$642

dom. 5/185:35 amBGR - STL

1 stop5h 07mAmerican Airlines

jue. 6/54:58 pmSTL - BGR

1 stop5h 06mAmerican Airlines

Deal found 4/28

$359

dom. 5/185:18 amBGR - STL

1 stop7h 30mDelta

jue. 6/51:09 pmSTL - BGR

2 stops9h 22mDelta

Deal found 4/28

$575

lun. 5/1911:50 amPWM - STL

3 stops31h 51mMultiple Airlines

jue. 5/2210:10 amSTL - PWM

2 stops26h 57mMultiple Airlines

Deal found 4/29

$599

mar. 5/208:05 amBOS - STL

2 stops8h 42mUnited Airlines

mar. 5/275:00 amSTL - BOS

2 stops8h 16mUnited Airlines

Deal found 4/29

$367

One-way flights from Maine to St. Louis
Search for one-way flight options from Maine to St. Louis. Find affordable one-way fares based on user searches. Data last updated abril 29, 2025.

lun. 5/59:30 pmPWM - STL

1 stop27h 36mFrontier

Deal found 4/28

$116

mié. 5/286:30 amBOS - STL

Nonstop3h 10mAmerican Airlines

Deal found 4/28

$152

jue. 6/126:00 amBOS - STL

2 stops12h 04mSpirit Airlines

Deal found 4/29

$153

jue. 5/294:25 pmBOS - STL

1 stop5h 14mDelta

Deal found 4/28

$155

vie. 5/26:00 amBOS - STL

1 stop19h 14mFrontier

Deal found 4/29

$167

mar. 6/33:49 pmBOS - STL

3 stops25h 56mMultiple Airlines

Deal found 4/28

$171

jue. 6/2611:38 amBOS - STL

1 stop24h 58mSun Country Air

Deal found 4/29

$173

vie. 6/1311:02 amBOS - STL

1 stop5h 28mUnited Airlines

Deal found 4/28

$179

lun. 6/95:00 amBOS - STL

2 stops8h 00mSouthwest

Deal found 4/28

$187

sáb. 7/55:45 pmBGR - STL

1 stop5h 28mAmerican Airlines

Deal found 4/28

$220

sáb. 7/56:00 amBGR - STL

2 stops9h 37mDelta

Deal found 4/28

$316

lun. 5/56:00 amPWM - STL

2 stops10h 47mUnited Airlines

Deal found 4/28

$325

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BangorSt. Louis

BGR - STL

BGRSTL

Bangor

mar. 6/24

5:43 pm-11:54 pm

1 stop7h 11m

Lambert-St Louis

vie. 7/4

10:35 am-4:22 pm

1 stop4h 47m

$259

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

mié. 5/21

5:50 am-9:42 am

1 stop4h 52m

Lambert-St Louis

mié. 5/28

10:25 am-4:51 pm

1 stop5h 26m

$285

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

mié. 5/28

1:40 pm-11:38 pm

2 stops10h 58m

Lambert-St Louis

mié. 6/4

3:40 pm-11:21 pm

1 stop6h 41m

$290

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 6/12

5:35 am-9:43 am

1 stop5h 08m

Lambert-St Louis

lun. 6/23

6:00 am-12:20 pm

1 stop5h 20m

$333

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 8/7

11:56 am-6:32 pm

1 stop7h 36m

Lambert-St Louis

dom. 8/10

8:44 am-11:40 pm

1 stop13h 56m

$335

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

sáb. 5/24

5:55 pm-8:00 pm

Nonstop3h 05m

Lambert-St Louis

mié. 5/28

7:00 pm-10:30 pm

Nonstop2h 30m

$343

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

sáb. 5/10

8:00 am-12:06 am

1 stop17h 06m

Lambert-St Louis

dom. 5/11

10:10 am-11:29 pm

1 stop12h 19m

$344

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

lun. 7/7

7:45 am-12:27 pm

1 stop5h 42m

Lambert-St Louis

mié. 7/9

7:30 am-1:40 pm

1 stop5h 10m

$346

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 8/7

1:14 pm-8:19 pm

1 stop8h 05m

Lambert-St Louis

lun. 8/11

9:45 am-1:25 pm

Nonstop2h 40m

$353

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

mié. 5/28

6:15 am-12:20 pm

1 stop7h 05m

Lambert-St Louis

sáb. 5/31

12:20 pm-11:25 pm

2 stops10h 05m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 27 results

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?

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

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

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

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

9,961 reviews

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

9,961 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

4,295 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

7,929 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

8,696 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

9,961 reviews

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

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 $116 on Frontier. Other airlines that offer cheap prices include American Airlines from $152 and Spirit Airlines from $153 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

Fenton

Maryland Heights

Fairview Heights

Collinsville

Wentzville

Eureka

St. Peters

Festus

Glencoe

Alton

Farmington

O'Fallon

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Maine to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$241	Average$402	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$273	Average$414	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$341	Average$466	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$351	Average$417	FlexibilityNo cancel fee	On-time63%

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$116+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Maine to St. Louis with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

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 abril 29, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Maine to St. Louis

Cheapest flights from Maine to St. LouisExplore 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 abril 29, 2025.

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 abril 29, 2025.

Cheapflights Fare Finder

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

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.

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?

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 abril 29, 2025.

Rainfall in St. Louis by month

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

Temperature in St. Louis by month

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

Reviews of airlines servicing St. Louis

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.

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?

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

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

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

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

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

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

Traveling to a place near Maine?

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Alternative routes for Maine to St. Louis

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Top 4 airlines flying from Maine to St. Louis

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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 abril 29, 2025.