$80+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PWM
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from St. Louis to Maine with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Maine
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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 February 3, 2026.
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 February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:32 am
STL
- BOS
1 stop23h 09m
Multiple Airlines
Mon 3/169:45 am
BOS
- STL
1 stop10h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:13 pm
STL
- BOS
1 stop14h 52m
Frontier
Thu 4/2312:56 pm
BOS
- STL
2 stops18h 54m
Frontier
Deal found 2/1![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:49 pm
STL
- BOS
1 stop16h 17m
Multiple Airlines
Thu 2/194:22 pm
BOS
- STL
1 stop8h 37m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- BOS
2 stops25h 28m
Multiple Airlines
Sat 3/2812:36 pm
BOS
- STL
1 stop22h 55m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 2/1. 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.
Sun 8/237:20 am
STL
- BGR
1 stop5h 15m
Delta
Sun 8/302:40 pm
BGR
- STL
1 stop7h 10m
Delta
Deal found 2/1![Delta logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:49 pm
STL
- BGR
1 stop17h 13m
Multiple Airlines
Wed 3/42:23 pm
BGR
- STL
2 stops34h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2312:16 pm
STL
- BOS
1 stop22h 25m
Frontier
Sat 3/2812:36 pm
BOS
- STL
1 stop22h 55m
Frontier
Deal found 2/1![Frontier logo]()
$281
This Delta deal was found by Cheapflights users on 2/2. 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.
Fri 5/85:45 pm
STL
- BGR
1 stop4h 48m
Delta
Sat 5/166:00 am
BGR
- STL
2 stops11h 49m
Delta
Deal found 2/2![Delta logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/153:49 pm
STL
- BOS
1 stop18h 48m
Multiple Airlines
Sun 2/224:22 pm
BOS
- STL
2 stops21h 47m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 5/126:40 am
STL
- BGR
2 stops8h 44m
Delta
Sat 5/166:00 am
BGR
- STL
2 stops11h 49m
Delta
Deal found 2/2![Delta logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:16 pm
STL
- BOS
1 stop21h 54m
Frontier
Tue 3/1712:36 pm
BOS
- STL
1 stop23h 01m
Frontier
Deal found 2/3![Frontier logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:13 pm
STL
- BOS
1 stop27h 38m
Frontier
Sun 4/1912:35 pm
BOS
- STL
1 stop19h 15m
Frontier
Deal found 2/2![Frontier logo]()
$292
Best flights from St. Louis to MaineDiscover 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 February 3, 2026.
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 February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:49 pm
STL
- BGR
1 stop17h 13m
Multiple Airlines
Wed 3/42:23 pm
BGR
- STL
2 stops34h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$280
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 2/186:00 am
STL
- BGR
1 stop5h 19m
American Airlines
Sun 2/224:56 pm
BGR
- STL
1 stop5h 41m
American Airlines
Deal found 2/2![American Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:55 pm
STL
- BOS
2 stops30h 56m
Frontier
Sat 4/2512:35 pm
BOS
- STL
1 stop22h 55m
Frontier
Deal found 2/2![Frontier logo]()
$310
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/168:30 am
STL
- PWM
1 stop4h 53m
United Airlines
Fri 2/204:15 pm
PWM
- STL
1 stop6h 25m
United Airlines
Deal found 2/2![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 2/1. 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.
Sat 3/77:40 pm
STL
- BOS
Nonstop2h 25m
Southwest
Sat 3/145:35 am
BOS
- STL
Nonstop3h 05m
Southwest
Deal found 2/1![Southwest logo]()
$359
This Delta deal was found by Cheapflights users on 2/2. 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.
Sun 3/15:39 pm
STL
- BGR
1 stop4h 46m
Delta
Wed 3/45:06 am
BGR
- STL
1 stop8h 17m
Delta
Deal found 2/2![Delta logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:49 pm
STL
- BGR
1 stop26h 25m
Multiple Airlines
Sun 2/227:54 pm
BGR
- STL
2 stops18h 15m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 4/285:21 pm
STL
- PWM
1 stop5h 52m
American Airlines
Thu 5/75:51 pm
PWM
- STL
1 stop5h 28m
American Airlines
Deal found 2/2![American Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 5/57:45 am
STL
- PWM
1 stop5h 29m
United Airlines
Fri 5/84:45 pm
PWM
- STL
1 stop5h 23m
United Airlines
Deal found 2/2![United Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:02 am
STL
- BOS
1 stop12h 31m
Multiple Airlines
Sun 3/2212:35 pm
BOS
- STL
1 stop25h 59m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 2/1. 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.
Thu 4/235:40 am
STL
- BOS
1 stop4h 15m
Southwest
Tue 4/285:55 pm
BOS
- STL
Nonstop3h 05m
Southwest
Deal found 2/1![Southwest logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:21 am
STL
- BOS
2 stops11h 38m
Multiple Airlines
Sun 4/124:23 pm
BOS
- STL
1 stop16h 28m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 2/2. 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 2/246:05 am
STL
- BOS
2 stops9h 05m
Southwest
Wed 2/256:25 am
BOS
- STL
Nonstop3h 20m
Southwest
Deal found 2/2![Southwest logo]()
$366
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 4/286:20 am
STL
- PWM
2 stops8h 37m
Delta
Thu 5/712:52 pm
PWM
- STL
2 stops12h 07m
Delta
Deal found 2/2![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 2/246:25 am
STL
- BOS
2 stops6h 47m
United Airlines
Wed 2/257:45 am
BOS
- STL
1 stop5h 36m
United Airlines
Deal found 2/2![United Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 2/1. 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.
Mon 3/231:25 pm
STL
- BOS
Nonstop2h 30m
Southwest
Sat 3/285:35 am
BOS
- STL
Nonstop3h 05m
Southwest
Deal found 2/1![Southwest logo]()
$367
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 6/106:03 am
STL
- PWM
1 stop5h 38m
American Airlines
Mon 6/156:00 am
PWM
- STL
1 stop5h 39m
American Airlines
Deal found 2/2![American Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 2/1. 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 6/106:45 am
STL
- PWM
2 stops10h 16m
Delta
Tue 6/236:00 am
PWM
- STL
1 stop7h 54m
Delta
Deal found 2/1![Delta logo]()
$412
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 2/177:41 am
STL
- BGR
2 stops9h 53m
United Airlines
Sat 2/216:35 am
BGR
- STL
2 stops8h 54m
United Airlines
Deal found 2/1![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 2/1. 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.
Mon 4/207:20 am
STL
- BOS
1 stop4h 20m
Southwest
Thu 4/235:40 am
BOS
- STL
Nonstop3h 00m
Southwest
Deal found 2/1![Southwest logo]()
$381
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sun 3/16:13 am
STL
- BGR
1 stop5h 06m
American Airlines
Wed 3/46:15 am
BGR
- STL
1 stop7h 18m
American Airlines
Deal found 2/2![American Airlines logo]()
$421
This Delta deal was found by Cheapflights users on 2/1. 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.
Mon 2/166:30 am
STL
- BGR
1 stop4h 53m
Delta
Fri 2/205:06 am
BGR
- STL
1 stop8h 17m
Delta
Deal found 2/1![Delta logo]()
$431
This Southwest deal was found by Cheapflights users on 2/2. 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 3/35:55 pm
STL
- BOS
Nonstop2h 30m
Southwest
Sun 3/85:35 am
BOS
- STL
Nonstop3h 05m
Southwest
Deal found 2/2![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Sun 3/17:41 am
STL
- BGR
2 stops9h 53m
United Airlines
Wed 3/46:35 am
BGR
- STL
2 stops10h 27m
United Airlines
Deal found 2/3![United Airlines logo]()
$472
This Southwest deal was found by Cheapflights users on 2/3. 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 3/35:55 pm
STL
- BOS
Nonstop2h 30m
Southwest
Sat 3/75:35 am
BOS
- STL
Nonstop3h 05m
Southwest
Deal found 2/3![Southwest logo]()
$396
This Southwest deal was found by Cheapflights users on 2/1. 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.
Thu 4/24:45 pm
STL
- PWM
1 stop6h 20m
Southwest
Sun 4/55:30 am
PWM
- STL
1 stop7h 15m
Southwest
Deal found 2/1![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 2/3. 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 3/274:25 pm
STL
- PWM
2 stops6h 40m
Southwest
Mon 3/305:30 pm
PWM
- STL
1 stop6h 35m
Southwest
Deal found 2/3![Southwest logo]()
$412
Last-minute flights from St. Louis to MaineDiscover last-minute flight deals from St. Louis to Maine. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Maine. Data last updated February 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/153:49 pm
STL
- BOS
1 stop18h 48m
Multiple Airlines
Sun 2/224:22 pm
BOS
- STL
2 stops21h 47m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:49 pm
STL
- BOS
1 stop16h 17m
Multiple Airlines
Thu 2/194:22 pm
BOS
- STL
1 stop8h 37m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:49 pm
STL
- BGR
1 stop26h 25m
Multiple Airlines
Sun 2/227:54 pm
BGR
- STL
2 stops18h 15m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:49 pm
STL
- BGR
1 stop17h 13m
Multiple Airlines
Wed 3/42:23 pm
BGR
- STL
2 stops34h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:47 am
STL
- BOS
1 stop6h 59m
Multiple Airlines
Wed 3/114:22 pm
BOS
- STL
1 stop7h 57m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:47 am
STL
- BOS
1 stop6h 59m
Multiple Airlines
Sun 3/812:50 pm
BOS
- STL
1 stop25h 29m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:32 am
STL
- BOS
1 stop23h 09m
Multiple Airlines
Mon 3/169:45 am
BOS
- STL
1 stop10h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:16 pm
STL
- BOS
1 stop21h 54m
Frontier
Tue 3/1712:36 pm
BOS
- STL
1 stop23h 01m
Frontier
Deal found 2/3![Frontier logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:16 pm
STL
- BOS
2 stops10h 43m
Multiple Airlines
Tue 3/1712:36 pm
BOS
- STL
1 stop23h 01m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2312:16 pm
STL
- BOS
1 stop22h 25m
Frontier
Sat 3/2812:36 pm
BOS
- STL
1 stop22h 55m
Frontier
Deal found 2/1![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- BOS
2 stops25h 28m
Multiple Airlines
Sat 3/2812:36 pm
BOS
- STL
1 stop22h 55m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:21 am
STL
- BOS
1 stop23h 20m
Multiple Airlines
Sun 3/294:23 pm
BOS
- STL
1 stop15h 39m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$299
One-way flights from St. Louis to MaineSearch for one-way flight options from St. Louis to Maine. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from St. Louis to Maine. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Super.com deal was found by Cheapflights users on 2/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/253:49 pm
STL
- BOS
1 stop16h 17m
Frontier
Deal found 2/3![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:22 pm
STL
- BOS
2 stops19h 23m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
- BOS
1 stop18h 59m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:22 pm
STL
- BOS
1 stop27h 51m
Frontier
Deal found 2/3![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/98:22 pm
STL
- BOS
1 stop27h 51m
Frontier
Deal found 2/2![Frontier logo]()
$91
This Frontier deal was found by Cheapflights users on 2/3. 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.
Thu 4/3011:21 am
STL
- BOS
1 stop12h 30m
Frontier
Deal found 2/3![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3111:27 am
STL
- BOS
2 stops25h 28m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
- BOS
1 stop13h 05m
Frontier
Deal found 2/3![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3111:27 am
STL
- BOS
1 stop12h 46m
Frontier
Deal found 2/2![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
- BOS
2 stops30h 55m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:17 pm
STL
- BOS
2 stops19h 58m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:49 pm
STL
- BGR
1 stop17h 13m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$134
Find 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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $271 (Kiwi.com) |
One-way from | $80 (Super.com) |
Popular in | January |
Cheapest in | March |
Average price | $479 |
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 February 3, 2026.
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. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Sun 3/1
3:49 pm-10:02 am
1 stop17h 13m
Bangor
Wed 3/4
2:23 pm-11:59 pm
2 stops34h 36m
$280
St. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Wed 2/18
3:49 pm-7:14 pm
1 stop26h 25m
Bangor
Sun 2/22
7:54 pm-1:09 pm
2 stops18h 15m
$293
St. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Wed 2/18
6:00 am-12:19 pm
1 stop5h 19m
Bangor
Sun 2/22
4:56 pm-9:37 pm
1 stop5h 41m
$309
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Tue 4/21
4:55 pm-12:51 am
2 stops30h 56m
Boston Logan Intl
Sat 4/25
12:35 pm-10:30 am
1 stop22h 55m
$310
St. LouisPortland
STL - PWM
STLPWM
Lambert-St Louis
Tue 4/28
5:21 pm-12:13 am
1 stop5h 52m
Portland
Thu 5/7
5:51 pm-10:19 pm
1 stop5h 28m
$317
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Thu 3/19
8:02 am-9:33 pm
1 stop12h 31m
Boston Logan Intl
Sun 3/22
12:35 pm-1:34 pm
1 stop25h 59m
$321
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Thu 4/9
11:21 am-11:59 pm
2 stops11h 38m
Boston Logan Intl
Sun 4/12
4:23 pm-7:51 am
1 stop16h 28m
$325
St. LouisPortland
STL - PWM
STLPWM
Lambert-St Louis
Mon 2/16
8:30 am-2:23 pm
1 stop4h 53m
Portland
Fri 2/20
4:15 pm-9:40 pm
1 stop6h 25m
$339
St. LouisPortland
STL - PWM
STLPWM
Lambert-St Louis
Tue 5/5
7:45 am-2:14 pm
1 stop5h 29m
Portland
Fri 5/8
4:45 pm-9:08 pm
1 stop5h 23m
$353
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sat 3/7
7:40 pm-11:05 pm
Nonstop2h 25m
Boston Logan Intl
Sat 3/14
5:35 am-7:40 am
Nonstop3h 05m
$359
Showing 1-10 of 47 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.
STL-BOS
STL-PWM
STL-BGR
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
STL-USME
STL-BOS
STL-PWM
STL-BGR
What is the cheapest month to book a flight from St. Louis to Maine?
Currently, July is the cheapest month in which you can book a flight from St. Louis to Maine (average of $232). Flying from St. Louis to Maine in January is currently the most expensive (average of $393). 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.
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 February 3, 2026.
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.
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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Alternative routes for St. Louis to Maine
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Complete your trip
Complete your trip to Maine by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Maine, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Maine flights
Browse other St. Louis and Maine flight options. Last updated on February 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Maine flights
Consider these flights traveling from St. Louis to Maine.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$201 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$229 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$401 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$284 | Average$512 | FlexibilityNo cancel fee | On-time63% |