$125+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PWM
Jun 20 — Jun 271
Round-trip
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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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 May 21, 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 May 21, 2026.
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:00 pm
STL
- BGR
1 stop5h 11m
Delta
Wed 9/26:00 am
BGR
- STL
1 stop6h 54m
Delta
Deal found 5/19![Delta logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:10 pm
STL
- PWM
1 stop17h 17m
Multiple Airlines
Tue 9/18:00 am
PWM
- STL
2 stops17h 14m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$278
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:20 am
STL
- BGR
1 stop5h 09m
American Airlines
Mon 10/56:01 pm
BGR
- STL
1 stop6h 40m
American Airlines
Deal found 5/19![American Airlines logo]()
$279
This American Airlines deal was found by Cheapflights users on 5/18. 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.
Sat 8/295:23 am
STL
- BGR
1 stop6h 47m
American Airlines
Tue 9/85:45 am
BGR
- STL
1 stop5h 57m
American Airlines
Deal found 5/18![American Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 5/18. 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 7/129:26 am
STL
- BGR
1 stop5h 57m
Delta
Wed 7/155:20 am
BGR
- STL
1 stop7h 27m
Delta
Deal found 5/18![Delta logo]()
$287
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/272:36 pm
STL
- BGR
1 stop7h 06m
American Airlines
Wed 6/35:45 am
BGR
- STL
1 stop5h 52m
American Airlines
Deal found 5/19![American Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:00 pm
STL
- BGR
1 stop5h 11m
Delta
Wed 9/26:00 am
BGR
- STL
2 stops13h 02m
Delta
Deal found 5/19![Delta logo]()
$292
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/152:00 pm
STL
- BGR
1 stop6h 28m
Delta
Wed 8/195:20 am
BGR
- STL
2 stops10h 13m
Delta
Deal found 5/20![Delta logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:09 pm
STL
- BGR
1 stop17h 04m
Multiple Airlines
Wed 8/1910:06 am
BGR
- STL
2 stops32h 24m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 8/44:09 pm
STL
- BGR
1 stop19h 59m
Multiple Airlines
Mon 8/1012:58 pm
BGR
- STL
1 stop12h 01m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$301
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:00 am
STL
- BGR
1 stop5h 23m
United Airlines
Wed 8/197:17 pm
BGR
- STL
1 stop5h 21m
United Airlines
Deal found 5/20![United Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:43 am
STL
- PWM
1 stop4h 28m
American Airlines
Tue 7/145:45 am
PWM
- STL
1 stop5h 16m
American Airlines
Deal found 5/20![American Airlines logo]()
$319
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 May 21, 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 May 21, 2026.
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:00 pm
STL
- BGR
1 stop5h 11m
Delta
Wed 9/26:00 am
BGR
- STL
1 stop6h 54m
Delta
Deal found 5/19![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:22 am
STL
- BGR
1 stop7h 20m
United Airlines
Sun 6/76:00 am
BGR
- STL
1 stop7h 11m
United Airlines
Deal found 5/20![United Airlines logo]()
$328
This Southwest deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/152:55 pm
STL
- PWM
1 stop5h 05m
Southwest
Wed 8/195:45 am
PWM
- STL
2 stops9h 10m
Southwest
Deal found 5/20![Southwest logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 7/154:52 pm
STL
- BOS
1 stop7h 31m
Frontier
Fri 7/1712:04 pm
BOS
- STL
2 stops12h 55m
Frontier
Deal found 5/16![Frontier logo]()
$423
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:00 pm
STL
- BGR
1 stop5h 11m
Delta
Wed 9/26:00 am
BGR
- STL
2 stops13h 02m
Delta
Deal found 5/19![Delta logo]()
$292
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Sat 6/131:13 pm
STL
- BGR
2 stops9h 19m
United Airlines
Wed 6/177:06 pm
BGR
- STL
1 stop5h 29m
United Airlines
Deal found 5/21![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 5/21. 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.
Sun 8/98:05 pm
STL
- BOS
Nonstop2h 35m
Southwest
Fri 8/145:50 pm
BOS
- STL
Nonstop2h 55m
Southwest
Deal found 5/21![Southwest logo]()
$371
This Southwest deal was found by Cheapflights users on 5/21. 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 8/186:30 am
STL
- BOS
2 stops7h 10m
Southwest
Sat 8/228:10 am
BOS
- STL
2 stops6h 25m
Southwest
Deal found 5/21![Southwest logo]()
$375
This United Airlines deal was found by Cheapflights users on 5/17. 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 7/1511:25 am
STL
- PWM
2 stops11h 26m
United Airlines
Tue 7/216:00 am
PWM
- STL
1 stop7h 11m
United Airlines
Deal found 5/17![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:45 pm
STL
- BOS
Nonstop2h 35m
Southwest
Tue 8/45:35 am
BOS
- STL
Nonstop2h 50m
Southwest
Deal found 5/20![Southwest logo]()
$384
This Delta deal was found by Cheapflights users on 5/18. 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 7/95:00 pm
STL
- BGR
1 stop5h 11m
Delta
Wed 7/155:20 am
BGR
- STL
1 stop7h 27m
Delta
Deal found 5/18![Delta logo]()
$438
This United Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:00 am
STL
- PWM
2 stops10h 17m
United Airlines
Tue 8/255:03 pm
PWM
- STL
1 stop5h 57m
United Airlines
Deal found 5/19![United Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 5/18. 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 6/237:10 pm
STL
- BOS
Nonstop2h 30m
Southwest
Sat 6/275:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Deal found 5/18![Southwest logo]()
$399
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:00 am
STL
- BGR
1 stop6h 01m
Delta
Mon 9/76:00 am
BGR
- STL
2 stops9h 38m
Delta
Deal found 5/20![Delta logo]()
$447
This Southwest deal was found by Cheapflights users on 5/16. 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 7/141:15 pm
STL
- BOS
Nonstop2h 35m
Southwest
Fri 7/176:50 pm
BOS
- STL
Nonstop3h 05m
Southwest
Deal found 5/16![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 5/16. 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 6/151:13 pm
STL
- BGR
1 stop7h 34m
United Airlines
Sun 6/216:00 am
BGR
- STL
1 stop7h 11m
United Airlines
Deal found 5/16![United Airlines logo]()
$440
This Delta deal was found by Cheapflights users on 5/17. 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 6/81:39 pm
STL
- BGR
2 stops8h 56m
Delta
Tue 6/165:05 am
BGR
- STL
2 stops8h 29m
Delta
Deal found 5/17![Delta logo]()
$469
This Southwest deal was found by Cheapflights users on 5/21. 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 6/208:45 pm
STL
- BOS
Nonstop2h 30m
Southwest
Sat 6/275:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Deal found 5/21![Southwest logo]()
$401
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/201:13 pm
STL
- PWM
1 stop7h 38m
United Airlines
Wed 6/245:15 am
PWM
- STL
3 stops11h 31m
United Airlines
Deal found 5/20![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 5/17. 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.
Wed 6/246:55 am
STL
- BOS
1 stop4h 15m
Southwest
Wed 6/245:30 pm
BOS
- STL
1 stop5h 55m
Southwest
Deal found 5/17![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 5/18. 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.
Sat 6/201:13 pm
STL
- PWM
1 stop7h 38m
United Airlines
Sun 7/56:00 am
PWM
- STL
1 stop7h 11m
United Airlines
Deal found 5/18![United Airlines logo]()
$486
This Southwest deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:00 am
STL
- BOS
Nonstop2h 35m
Southwest
Fri 8/285:00 am
BOS
- STL
Nonstop2h 50m
Southwest
Deal found 5/19![Southwest logo]()
$407
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Fri 9/251:29 pm
STL
- PWM
1 stop7h 17m
United Airlines
Mon 9/286:00 am
PWM
- STL
1 stop7h 13m
United Airlines
Deal found 5/16![United Airlines logo]()
$487
This Southwest deal was found by Cheapflights users on 5/18. 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 8/2110:05 am
STL
- BOS
1 stop5h 05m
Southwest
Tue 8/255:45 pm
BOS
- STL
Nonstop2h 55m
Southwest
Deal found 5/18![Southwest logo]()
$409
This Southwest deal was found by Cheapflights users on 5/17. 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 10/14:25 pm
STL
- PWM
2 stops6h 40m
Southwest
Tue 10/65:50 am
PWM
- STL
1 stop6h 40m
Southwest
Deal found 5/17![Southwest logo]()
$418
Last-minute flights from St. Louis to MaineDiscover last-minute flight deals from St. Louis to Maine. Data last updated May 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Maine. Data last updated May 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/272:36 pm
STL
- BGR
1 stop7h 06m
American Airlines
Wed 6/35:45 am
BGR
- STL
1 stop5h 52m
American Airlines
Deal found 5/19![American Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:22 am
STL
- BGR
1 stop7h 20m
United Airlines
Sun 6/76:00 am
BGR
- STL
1 stop7h 11m
United Airlines
Deal found 5/20![United Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 6/58:08 pm
STL
- BOS
2 stops28h 16m
Frontier
Tue 6/99:10 am
BOS
- STL
1 stop24h 37m
Frontier
Deal found 5/17![Frontier logo]()
$335
This American Airlines deal was found by Cheapflights users on 5/18. 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.
Mon 6/85:40 pm
STL
- BGR
1 stop5h 05m
American Airlines
Tue 6/164:34 pm
BGR
- STL
1 stop8h 25m
American Airlines
Deal found 5/18![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:25 am
STL
- PWM
1 stop6h 41m
American Airlines
Tue 6/235:38 am
PWM
- STL
1 stop5h 34m
American Airlines
Deal found 5/20![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:22 am
STL
- PWM
1 stop6h 07m
United Airlines
Tue 6/165:15 am
PWM
- STL
2 stops7h 56m
United Airlines
Deal found 5/20![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 5/21. 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.
Wed 6/105:40 am
STL
- BOS
1 stop4h 15m
Southwest
Tue 6/165:35 am
BOS
- STL
2 stops10h 15m
Southwest
Deal found 5/21![Southwest logo]()
$340
This Frontier deal was found by Cheapflights users on 5/21. 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.
Wed 6/105:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Sun 6/149:10 am
BOS
- STL
1 stop9h 20m
Frontier
Deal found 5/21![Frontier logo]()
$342
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:51 pm
STL
- BOS
Nonstop2h 45m
American Airlines
Tue 6/235:11 pm
BOS
- STL
Nonstop3h 10m
American Airlines
Deal found 5/20![American Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 6/205:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Sat 6/278:43 am
BOS
- STL
2 stops49h 09m
Frontier
Deal found 5/21![Frontier logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 6/236:31 pm
STL
- BOS
1 stop12h 21m
Frontier
Sat 6/278:43 am
BOS
- STL
2 stops33h 47m
Frontier
Deal found 5/18![Frontier logo]()
$336
This Expedia deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/256:31 pm
STL
- BOS
1 stop12h 21m
Frontier
Tue 6/309:10 am
BOS
- STL
1 stop9h 20m
Frontier
Deal found 5/19![Frontier logo]()
$339
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 May 21, 2026.
Search for one-way flight options from St. Louis to Maine. Find affordable one-way fares based on user searches. Data last updated May 21, 2026.
This Super.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:27 pm
STL
- BOS
1 stop6h 57m
Frontier
Deal found 5/20![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 5/21. 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.
Tue 5/266:33 pm
STL
- BOS
1 stop12h 16m
Frontier
Deal found 5/21![Frontier logo]()
$126
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:33 pm
STL
- BOS
1 stop5h 50m
Frontier
Deal found 5/20![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/275:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Deal found 5/19![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Deal found 5/20![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 5/21. 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.
Thu 7/96:34 pm
STL
- BOS
1 stop12h 12m
Frontier
Deal found 5/21![Frontier logo]()
$131
This Super.com deal was found by Cheapflights users on 5/18. 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.
Mon 6/15:27 pm
STL
- BOS
1 stop6h 57m
Frontier
Deal found 5/18![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Deal found 5/20![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:33 pm
STL
- BOS
1 stop5h 50m
Frontier
Deal found 5/20![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:31 pm
STL
- BOS
1 stop5h 56m
Frontier
Deal found 5/20![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 8/254:10 pm
STL
- PWM
1 stop17h 17m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/184:52 pm
STL
- BOS
1 stop17h 05m
Frontier
Deal found 5/20![Frontier logo]()
$139
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 May 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $257 (Delta) |
One-way from | $125 (Super.com) |
Popular in | January |
Cheapest in | March |
Average price | $406 |
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 May 21, 2026.
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
Cheapest round-trip
St. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Tue 7/7
5:00 pm-11:11 pm
1 stop5h 11m
Bangor
Wed 9/2
6:00 am-11:54 am
1 stop6h 54m
$257
St. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Wed 7/8
5:00 pm-11:11 pm
1 stop5h 11m
Bangor
Wed 9/2
6:00 am-6:02 pm
2 stops13h 02m
$292
St. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Wed 6/3
7:22 am-3:42 pm
1 stop7h 20m
Bangor
Sun 6/7
6:00 am-12:11 pm
1 stop7h 11m
$328
St. LouisPortland
STL - PWM
STLPWM
Lambert-St Louis
Sat 8/15
2:55 pm-9:00 pm
1 stop5h 05m
Portland
Wed 8/19
5:45 am-1:55 pm
2 stops9h 10m
$348
St. LouisBangor
STL - BGR
STLBGR
Lambert-St Louis
Sat 6/13
1:13 pm-11:32 pm
2 stops9h 19m
Bangor
Wed 6/17
7:06 pm-11:35 pm
1 stop5h 29m
$352
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sun 8/9
8:05 pm-11:40 pm
Nonstop2h 35m
Boston Logan Intl
Fri 8/14
5:50 pm-7:45 pm
Nonstop2h 55m
$371
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Tue 8/18
6:30 am-2:40 pm
2 stops7h 10m
Boston Logan Intl
Sat 8/22
8:10 am-1:35 pm
2 stops6h 25m
$375
Quickest round-trip
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sat 8/1
4:45 pm-8:20 pm
Nonstop2h 35m
Boston Logan Intl
Tue 8/4
5:35 am-7:25 am
Nonstop2h 50m
$384
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Tue 6/23
7:10 pm-10:40 pm
Nonstop2h 30m
Boston Logan Intl
Sat 6/27
5:50 am-7:45 am
Nonstop2h 55m
$399
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Tue 7/14
1:15 pm-4:50 pm
Nonstop2h 35m
Boston Logan Intl
Fri 7/17
6:50 pm-8:55 pm
Nonstop3h 05m
$399
Showing 1-10 of 50 resultsSorted by cheapest first
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-BGR
STL-PWM
STL-BOS
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-BGR
STL-PWM
STL-BOS
What is the cheapest month to book a flight from St. Louis to Maine?
Currently, October is the cheapest month in which you can book a flight from St. Louis to Maine (average of $151). Flying from St. Louis to Maine in January is currently the most expensive (average of $476). 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.
How much does it cost to fly round-trip from St. Louis to Maine?
How far ahead should I book a flight from St. Louis to Maine?
The best time to book flights from St. Louis to Maine is 41 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 May 21, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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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St. Louis and Maine flights
Browse other St. Louis and Maine flight options. Last updated on May 21, 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 May 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$229 | Average$405 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$456 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$409 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$284 | Average$546 | FlexibilityNo cancel fee | On-time63% |