$119+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — STL
Sep 25 — Oct 21
Round-trip
1 adult, Economy
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Find cheap flights from Maine to St. Louis 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 Maine to St. Louis
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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 August 26, 2026.
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 August 26, 2026.
This CheapOair deal was found by Cheapflights users on 8/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:47 am -
1 stop12h 26m
Sun 10/184:30 pm -
1 stop17h 32m
Deal found 8/21![Frontier logo]()
$329
This American Airlines deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 29m
Tue 9/295:00 am -
1 stop8h 08m
Deal found 8/25![American Airlines logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 10/1312:57 pm -
1 stop29h 43m
Mon 10/196:35 pm -
1 stop16h 27m
Deal found 8/23![Frontier logo]()
$331
This Southwest deal was found by Cheapflights users on 8/22. 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 9/125:50 am -
2 stops7h 45m
Mon 9/147:00 pm -
Nonstop2h 35m
Deal found 8/22![Southwest logo]()
$332
This American Airlines deal was found by Cheapflights users on 8/22. 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 9/236:20 am -
Nonstop3h 00m
Wed 9/236:00 pm -
Nonstop2h 47m
Deal found 8/22![American Airlines logo]()
$333
This American Airlines deal was found by Cheapflights users on 8/26. 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 10/147:00 am -
1 stop6h 35m
Wed 10/216:01 am -
1 stop6h 37m
Deal found 8/26![American Airlines logo]()
$333
This Super.com deal was found by Cheapflights users on 8/25. 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 9/2411:17 am -
1 stop7h 37m
Sun 9/275:19 pm -
1 stop16h 32m
Deal found 8/25![Frontier logo]()
$335
This Delta deal was found by Cheapflights users on 8/26. 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 9/231:00 pm -
1 stop8h 06m
Thu 9/246:54 pm -
1 stop5h 23m
Deal found 8/26![Delta logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/812:57 pm -
1 stop29h 43m
Mon 10/126:35 pm -
1 stop16h 27m
Deal found 8/24![Frontier logo]()
$338
This American Airlines deal was found by Cheapflights users on 8/26. 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 10/76:00 am -
1 stop7h 35m
Tue 10/135:08 pm -
1 stop5h 51m
Deal found 8/26![American Airlines logo]()
$339
This CheapOair deal was found by Cheapflights users on 8/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:47 am -
1 stop12h 26m
Sun 10/254:30 pm -
1 stop17h 32m
Deal found 8/21![Frontier logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/1612:54 pm -
2 stops21h 41m
Fri 9/185:19 pm -
1 stop16h 32m
Deal found 8/24![Frontier logo]()
$340
Best flights from Maine to St. LouisDiscover 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 August 26, 2026.
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 August 26, 2026.
This Southwest deal was found by Cheapflights users on 8/25. 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 9/235:25 am -
1 stop5h 40m
Wed 9/3012:50 pm -
2 stops7h 40m
Deal found 8/25![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 8/26. 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 11/48:45 am -
2 stops7h 58m
Sat 11/78:30 am -
1 stop4h 46m
Deal found 8/26![United Airlines logo]()
$344
This American Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:00 am -
1 stop6h 35m
Mon 10/265:27 pm -
1 stop5h 13m
Deal found 8/23![American Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 8/25. 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 10/105:30 am -
1 stop6h 21m
Mon 10/126:05 pm -
1 stop4h 54m
Deal found 8/25![Delta logo]()
$388
This Southwest deal was found by Cheapflights users on 8/22. 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 10/146:45 am -
2 stops9h 15m
Wed 10/144:30 pm -
1 stop4h 40m
Deal found 8/22![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:08 pm -
1 stop5h 13m
Sat 10/172:56 pm -
2 stops8h 03m
Deal found 8/23![United Airlines logo]()
$344
This Southwest deal was found by Cheapflights users on 8/25. 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 11/43:25 pm -
2 stops7h 30m
Sat 11/76:25 am -
1 stop5h 00m
Deal found 8/25![Southwest logo]()
$344
This United Airlines deal was found by Cheapflights users on 8/25. 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 10/166:00 am -
1 stop5h 48m
Mon 10/268:30 am -
1 stop4h 46m
Deal found 8/25![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 8/24. 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 10/295:35 am -
2 stops7h 00m
Sat 10/319:25 am -
2 stops7h 15m
Deal found 8/24![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 8/24. 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 9/84:45 pm -
1 stop4h 50m
Sat 9/121:40 pm -
1 stop6h 20m
Deal found 8/24![Delta logo]()
$428
This United Airlines deal was found by Cheapflights users on 8/23. 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 10/96:00 am -
1 stop6h 22m
Mon 10/198:00 am -
1 stop5h 38m
Deal found 8/23![United Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 8/21. 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 9/168:15 am -
1 stop7h 35m
Sat 9/2611:45 am -
2 stops9h 00m
Deal found 8/21![Southwest logo]()
$365
This Southwest deal was found by Cheapflights users on 8/26. 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 11/43:25 pm -
2 stops7h 30m
Fri 11/67:45 am -
2 stops7h 45m
Deal found 8/26![Southwest logo]()
$385
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/94:57 pm -
1 stop7h 02m
Sun 9/131:00 pm -
1 stop5h 24m
Deal found 8/25![United Airlines logo]()
$428
This Southwest deal was found by Cheapflights users on 8/21. 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.
Thu 9/105:50 pm -
Nonstop2h 55m
Fri 9/117:00 pm -
Nonstop2h 35m
Deal found 8/21![Southwest logo]()
$389
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Tue 2/24:48 pm -
1 stop5h 25m
Wed 2/35:00 am -
1 stop7h 52m
Deal found 8/21![United Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 8/25. 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 10/84:10 pm -
2 stops8h 44m
Tue 10/135:31 pm -
1 stop4h 54m
Deal found 8/25![Delta logo]()
$618
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Thu 9/175:45 am -
2 stops7h 12m
Mon 9/218:20 am -
1 stop7h 28m
Deal found 8/22![United Airlines logo]()
$432
This Southwest deal was found by Cheapflights users on 8/22. 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 10/85:25 am -
Nonstop3h 00m
Sun 10/119:05 pm -
Nonstop2h 35m
Deal found 8/22![Southwest logo]()
$394
This Southwest deal was found by Cheapflights users on 8/24. 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 10/15:35 am -
2 stops7h 00m
Sat 10/310:05 am -
2 stops7h 15m
Deal found 8/24![Southwest logo]()
$400
This Southwest deal was found by Cheapflights users on 8/23. 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 10/125:35 am -
1 stop5h 55m
Sat 10/1711:55 am -
2 stops6h 50m
Deal found 8/23![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 8/23. 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 10/75:40 am -
2 stops8h 10m
Sat 10/177:20 am -
2 stops7h 35m
Deal found 8/23![Southwest logo]()
$427
This Southwest deal was found by Cheapflights users on 8/25. 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 10/35:35 am -
2 stops8h 25m
Sun 10/44:35 pm -
1 stop5h 25m
Deal found 8/25![Southwest logo]()
$429
This United Airlines deal was found by Cheapflights users on 8/24. 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 10/244:43 pm -
1 stop7h 48m
Wed 10/286:09 am -
1 stop27h 10m
Deal found 8/24![United Airlines logo]()
$679
This Southwest deal was found by Cheapflights users on 8/22. 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 12/307:40 pm -
1 stop5h 15m
Sat 1/28:10 am -
Nonstop2h 30m
Deal found 8/22![Southwest logo]()
$434
Last-minute flights from Maine to St. LouisDiscover last-minute flight deals from Maine to St. Louis. Data last updated August 26, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to St. Louis. Data last updated August 26, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/25. 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 9/53:57 pm -
1 stop6h 02m
Sun 9/65:40 pm -
1 stop5h 07m
Deal found 8/25![American Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 8/22. 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 9/125:50 am -
2 stops7h 45m
Mon 9/147:00 pm -
Nonstop2h 35m
Deal found 8/22![Southwest logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/1612:54 pm -
2 stops21h 41m
Fri 9/185:19 pm -
1 stop16h 32m
Deal found 8/24![Frontier logo]()
$340
This Southwest deal was found by Cheapflights users on 8/23. 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 9/173:55 pm -
1 stop7h 15m
Tue 9/2210:45 am -
2 stops6h 50m
Deal found 8/23![Southwest logo]()
$342
This American Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:20 am -
Nonstop3h 00m
Tue 9/225:00 am -
1 stop8h 08m
Deal found 8/26![American Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/2212:52 pm -
1 stop25h 18m
Fri 9/255:19 pm -
1 stop16h 32m
Deal found 8/25![Frontier logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/22. 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 9/236:20 am -
Nonstop3h 00m
Wed 9/236:00 pm -
Nonstop2h 47m
Deal found 8/22![American Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 8/26. 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 9/231:00 pm -
1 stop8h 06m
Thu 9/246:54 pm -
1 stop5h 23m
Deal found 8/26![Delta logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 9/2312:54 pm -
2 stops21h 41m
Sun 9/275:19 pm -
1 stop16h 32m
Deal found 8/22![Frontier logo]()
$344
This American Airlines deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 29m
Tue 9/295:00 am -
1 stop8h 08m
Deal found 8/25![American Airlines logo]()
$330
This Super.com deal was found by Cheapflights users on 8/25. 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 9/2411:17 am -
1 stop7h 37m
Sun 9/275:19 pm -
1 stop16h 32m
Deal found 8/25![Frontier logo]()
$335
This American Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:20 am -
Nonstop3h 00m
Mon 9/286:00 pm -
Nonstop2h 47m
Deal found 8/26![American Airlines logo]()
$343
One-way flights from Maine to St. LouisSearch for one-way flight options from Maine to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.
Search for one-way flight options from Maine to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.
This Frontier deal was found by Cheapflights users on 8/21. 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.
Thu 10/111:17 am -
1 stop7h 37m
Deal found 8/21![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 8/23. 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 10/2411:47 am -
1 stop12h 26m
Deal found 8/23![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 9/2212:52 pm -
1 stop25h 18m
Deal found 8/22![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Wed 10/2111:28 am -
1 stop7h 12m
Deal found 8/21![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 8/21. 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.
Fri 10/2311:47 am -
1 stop12h 26m
Deal found 8/21![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 9/1512:52 pm -
2 stops31h 25m
Deal found 8/23![Frontier logo]()
$142
This Super.com deal was found by Cheapflights users on 8/23. 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 9/1011:17 am -
1 stop7h 37m
Deal found 8/23![Frontier logo]()
$147
This Super.com deal was found by Cheapflights users on 8/23. 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 9/2411:17 am -
1 stop7h 37m
Deal found 8/23![Frontier logo]()
$149
This Frontier deal was found by Cheapflights users on 8/21. 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.
Fri 9/49:36 am -
1 stop8h 46m
Deal found 8/21![Frontier logo]()
$150
This Frontier deal was found by Cheapflights users on 8/23. 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.
Mon 10/2611:47 am -
1 stop12h 26m
Deal found 8/23![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/227:35 am -
3 stops30h 35m
Deal found 8/25![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 9/305:09 pm -
2 stops45h 01m
Deal found 8/22![Multiple Airlines logo]()
$169
Find 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 August 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $329 (CheapOair) |
One-way from | $119 (Frontier) |
Popular in | April |
Cheapest in | March |
Average price | $516 |
Cheapflights Fare Finder
Customize your flight search to find flights from Maine to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 26, 2026.
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
Cheapest round-trip
BostonSt. Louis
BOS Boston Logan Intl - STL Lambert-St Louis
BOSSTL
Boston Logan Intl
Wed 9/23
5:25 am-10:05 am
1 stop5h 40m
Lambert-St Louis
Wed 9/30
12:50 pm-9:30 pm
2 stops7h 40m
$342
BostonSt. Louis
BOS Boston Logan Intl - STL Lambert-St Louis
BOSSTL
Boston Logan Intl
Wed 10/14
6:45 am-3:00 pm
2 stops9h 15m
Lambert-St Louis
Wed 10/14
4:30 pm-10:10 pm
1 stop4h 40m
$342
PortlandSt. Louis
PWM Portland - STL Lambert-St Louis
PWMSTL
Portland
Wed 11/4
8:45 am-3:43 pm
2 stops7h 58m
Lambert-St Louis
Sat 11/7
8:30 am-2:16 pm
1 stop4h 46m
$344
PortlandSt. Louis
PWM Portland - STL Lambert-St Louis
PWMSTL
Portland
Wed 10/7
5:08 pm-9:21 pm
1 stop5h 13m
Lambert-St Louis
Sat 10/17
2:56 pm-11:59 pm
2 stops8h 03m
$344
PortlandSt. Louis
PWM Portland - STL Lambert-St Louis
PWMSTL
Portland
Wed 11/4
3:25 pm-9:55 pm
2 stops7h 30m
Lambert-St Louis
Sat 11/7
6:25 am-12:25 pm
1 stop5h 00m
$344
BostonSt. Louis
BOS Boston Logan Intl - STL Lambert-St Louis
BOSSTL
Boston Logan Intl
Thu 10/29
5:35 am-11:35 am
2 stops7h 00m
Lambert-St Louis
Sat 10/31
9:25 am-5:40 pm
2 stops7h 15m
$347
PortlandSt. Louis
PWM Portland - STL Lambert-St Louis
PWMSTL
Portland
Fri 10/16
7:00 am-12:35 pm
1 stop6h 35m
Lambert-St Louis
Mon 10/26
5:27 pm-11:40 pm
1 stop5h 13m
$362
PortlandSt. Louis
PWM Portland - STL Lambert-St Louis
PWMSTL
Portland
Fri 10/16
6:00 am-10:48 am
1 stop5h 48m
Lambert-St Louis
Mon 10/26
8:30 am-2:16 pm
1 stop4h 46m
$362
BostonSt. Louis
BOS Boston Logan Intl - STL Lambert-St Louis
BOSSTL
Boston Logan Intl
Wed 9/16
8:15 am-2:50 pm
1 stop7h 35m
Lambert-St Louis
Sat 9/26
11:45 am-9:45 pm
2 stops9h 00m
$365
PortlandSt. Louis
PWM Portland - STL Lambert-St Louis
PWMSTL
Portland
Wed 11/4
3:25 pm-9:55 pm
2 stops7h 30m
Lambert-St Louis
Fri 11/6
7:45 am-4:30 pm
2 stops7h 45m
$385
Showing 1-10 of 49 resultsSorted by cheapest first
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.
BOS-STL
PWM-STL
BGR-STL
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
USME-STL
BOS-STL
PWM-STL
BGR-STL
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 $356). Flying from Maine to St. Louis in October is currently the most expensive (average of $539). 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 Maine to St. Louis?
Airfare is below average for this route at the moment.
Maine to St. Louis flights typically cost between $357 and $521 in October.The cheapest round-trip price found within the last 5 days was $339 on American Airlines (Oct 7-Oct 13).
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Alternative routes for Maine to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
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Maine and St. Louis flights
Browse other Maine and St. Louis flight options. Last updated on August 26, 2026.
Popular flight searches
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 26, 2026.
Maine to St. Louis flights
Consider these flights traveling from Maine to St. Louis.
Top 4 airlines flying from Maine to St. Louis
Discover the top 4 airlines that operate flights from Maine to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$254 | Average$318 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$268 | Average$377 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$284 | Average$438 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$348 | Average$576 | FlexibilityNo cancel fee | On-time63% |