$96+ Cheap flights from Colorado to Maine
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PWM
May 3 — May 101
Round-trip
1 adult, Economy
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Find cheap flights from Colorado to Maine with Cheapflights
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Cheapest flights from Colorado to MaineExplore the most affordable flight options available from Colorado to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
Explore the most affordable flight options available from Colorado to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2026.
This Southwest deal was found by Cheapflights users on 3/29. 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 4/207:35 am
DEN
- BOS
1 stop8h 30m
Southwest
Tue 4/285:35 am
BOS
- DEN
Nonstop4h 30m
Southwest
Deal found 3/29![Southwest logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 4/2211:00 am
DEN
- BOS
2 stops12h 31m
Multiple Airlines
Tue 4/286:00 pm
BOS
- DEN
1 stop17h 40m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$200
This CheapOair deal was found by Cheapflights users on 3/30. 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.
Fri 5/296:03 am
DEN
- BOS
1 stop27h 03m
Multiple Airlines
Tue 6/26:45 pm
BOS
- DEN
Nonstop4h 52m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$201
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:28 pm
DEN
- BOS
Nonstop3h 54m
JetBlue
Mon 5/117:31 pm
BOS
- DEN
Nonstop4h 42m
JetBlue
Deal found 3/31![JetBlue logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/411:59 pm
DEN
- BOS
2 stops33h 07m
Frontier
Sat 5/98:40 am
BOS
- DEN
1 stop7h 52m
Frontier
Deal found 3/30![Frontier logo]()
$203
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:00 pm
DEN
- BOS
1 stop10h 31m
Frontier
Tue 5/56:00 am
BOS
- DEN
1 stop10h 04m
Frontier
Deal found 3/31![Frontier logo]()
$204
This Frontier deal was found by Cheapflights users on 3/31. 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 5/11:00 pm
DEN
- BOS
1 stop10h 31m
Frontier
Wed 5/612:01 pm
BOS
- DEN
1 stop12h 23m
Frontier
Deal found 3/31![Frontier logo]()
$205
This KAYAK deal was found by Cheapflights users on 3/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:59 pm
DEN
- BOS
Nonstop3h 48m
JetBlue
Sat 5/97:31 pm
BOS
- DEN
Nonstop4h 42m
JetBlue
Deal found 3/30![JetBlue logo]()
$207
This Kissandfly.com deal was found by Cheapflights users on 3/31. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
DEN
- BOS
1 stop5h 51m
Frontier
Wed 5/612:01 pm
BOS
- DEN
1 stop12h 23m
Frontier
Deal found 3/31![Frontier logo]()
$208
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/91:39 pm
COS
- BOS
1 stop8h 25m
American Airlines
Tue 5/127:00 am
BOS
- COS
1 stop7h 49m
American Airlines
Deal found 3/31![American Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 4/1. 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.
Fri 5/2912:50 pm
DEN
- BOS
1 stop8h 20m
Southwest
Wed 6/35:35 am
BOS
- DEN
Nonstop4h 30m
Southwest
Deal found 4/1![Southwest logo]()
$209
This Frontier deal was found by Cheapflights users on 3/30. 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.
Tue 4/281:09 pm
DEN
- BOS
1 stop10h 22m
Frontier
Fri 5/812:01 pm
BOS
- DEN
1 stop12h 23m
Frontier
Deal found 3/30![Frontier logo]()
$210
Best flights from Colorado to MaineDiscover carefully curated flight deals from Colorado to Maine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
Discover carefully curated flight deals from Colorado to Maine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2026.
This Southwest deal was found by Cheapflights users on 4/1. 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 4/305:45 am
DEN
- BOS
1 stop8h 20m
Southwest
Wed 5/65:45 am
BOS
- DEN
1 stop6h 10m
Southwest
Deal found 4/1![Southwest logo]()
$209
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 6/111:59 pm
DEN
- BOS
Nonstop3h 59m
United Airlines
Mon 6/88:39 pm
BOS
- DEN
Nonstop4h 47m
United Airlines
Deal found 4/1![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/30. 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 8/2710:57 am
COS
- BOS
2 stops10h 20m
Delta
Sun 8/305:30 am
BOS
- COS
2 stops9h 18m
Delta
Deal found 3/30![Delta logo]()
$288
This American Airlines deal was found by Cheapflights users on 4/2. 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 9/298:00 am
COS
- PWM
1 stop8h 31m
American Airlines
Tue 10/67:14 am
PWM
- COS
1 stop6h 23m
American Airlines
Deal found 4/2![American Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 4/1. 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 6/111:55 pm
DEN
- BOS
1 stop6h 20m
Southwest
Mon 6/85:50 pm
BOS
- DEN
1 stop7h 05m
Southwest
Deal found 4/1![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 3/31. 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 6/23:00 pm
DEN
- BOS
1 stop5h 20m
Southwest
Sat 6/612:35 pm
BOS
- DEN
2 stops7h 50m
Southwest
Deal found 3/31![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 3/29. 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 5/98:15 am
COS
- BOS
2 stops9h 00m
Delta
Tue 5/128:50 am
BOS
- COS
2 stops14h 37m
Delta
Deal found 3/29![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 4/1. 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 6/2311:59 pm
DEN
- BOS
1 stop6h 18m
United Airlines
Mon 6/298:39 pm
BOS
- DEN
Nonstop4h 47m
United Airlines
Deal found 4/1![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 3/30. 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 6/17:00 pm
DEN
- BOS
Nonstop3h 50m
Southwest
Sat 6/136:40 am
BOS
- DEN
Nonstop4h 25m
Southwest
Deal found 3/30![Southwest logo]()
$267
This Expedia deal was found by Cheapflights users on 3/31. 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.
Fri 4/2411:59 pm
DEN
- BHB
1 stop11h 26m
Multiple Airlines
Tue 4/282:20 pm
BHB
- DEN
1 stop10h 44m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$706
This Delta deal was found by Cheapflights users on 4/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/52:25 pm
COS
- PWM
1 stop6h 49m
Delta
Wed 8/121:35 pm
PWM
- COS
1 stop9h 40m
Delta
Deal found 4/3![Delta logo]()
$326
This United Airlines deal was found by Cheapflights users on 3/30. 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 5/51:25 pm
COS
- BOS
1 stop8h 34m
United Airlines
Wed 5/61:30 pm
BOS
- COS
1 stop10h 01m
United Airlines
Deal found 3/30![United Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 3/29. 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 5/712:42 pm
MTJ
- BOS
1 stop9h 22m
American Airlines
Tue 5/126:00 am
BOS
- MTJ
1 stop8h 02m
American Airlines
Deal found 3/29![American Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Mon 9/2111:59 pm
DEN
- BOS
Nonstop4h 00m
United Airlines
Fri 9/258:10 pm
BOS
- DEN
1 stop6h 48m
United Airlines
Deal found 4/1![United Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 3/30. 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 9/311:40 am
DEN
- BOS
Nonstop4h 10m
Delta
Tue 9/87:55 am
BOS
- DEN
Nonstop4h 45m
Delta
Deal found 3/30![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 4/2. 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.
Wed 5/201:15 pm
DEN
- BOS
2 stops7h 15m
Southwest
Wed 5/276:00 pm
BOS
- DEN
1 stop6h 40m
Southwest
Deal found 4/2![Southwest logo]()
$304
This JetBlue deal was found by Cheapflights users on 3/31. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:59 pm
DEN
- BHB
1 stop9h 24m
JetBlue
Sun 4/192:20 pm
BHB
- DEN
1 stop10h 44m
JetBlue
Deal found 3/31![JetBlue logo]()
$824
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/156:00 am
GJT
- BOS
1 stop7h 30m
American Airlines
Wed 4/222:12 pm
BOS
- GJT
2 stops10h 30m
American Airlines
Deal found 3/30![American Airlines logo]()
$390
This United Airlines deal was found by Cheapflights users on 3/31. 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 5/2212:31 pm
MTJ
- BOS
1 stop8h 44m
United Airlines
Mon 5/256:00 am
BOS
- MTJ
1 stop7h 43m
United Airlines
Deal found 3/31![United Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 3/29. 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 7/216:16 pm
COS
- BOS
1 stop9h 49m
Delta
Tue 7/285:55 am
BOS
- COS
1 stop6h 33m
Delta
Deal found 3/29![Delta logo]()
$338
This Southwest deal was found by Cheapflights users on 3/30. 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 4/2012:55 pm
DEN
- BOS
2 stops8h 20m
Southwest
Tue 4/287:35 am
BOS
- DEN
2 stops8h 45m
Southwest
Deal found 3/30![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 4/2. 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 6/2912:40 pm
DEN
- BGR
1 stop8h 35m
United Airlines
Sat 7/43:13 pm
BGR
- DEN
Nonstop4h 49m
United Airlines
Deal found 4/2![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 4/2. 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 4/286:40 am
DEN
- BGR
1 stop7h 47m
Delta
Tue 5/512:49 pm
BGR
- DEN
1 stop10h 16m
Delta
Deal found 4/2![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 3/30. 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 5/412:55 pm
DEN
- BOS
2 stops8h 20m
Southwest
Sat 5/912:50 pm
BOS
- DEN
2 stops8h 20m
Southwest
Deal found 3/30![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 4/2. 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.
Sat 5/306:30 am
DEN
- BGR
1 stop7h 17m
Delta
Thu 6/114:22 pm
BGR
- DEN
1 stop8h 23m
Delta
Deal found 4/2![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 3/31. 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 5/273:20 pm
HDN
- BOS
1 stop6h 24m
United Airlines
Tue 6/25:45 am
BOS
- HDN
2 stops8h 39m
United Airlines
Deal found 3/31![United Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:58 pm
GJT
- BOS
1 stop9h 15m
American Airlines
Mon 8/245:07 pm
BOS
- GJT
1 stop9h 13m
American Airlines
Deal found 4/1![American Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 3/31. 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 8/51:30 pm
COS
- PWM
2 stops8h 21m
United Airlines
Wed 8/126:00 am
PWM
- COS
1 stop6h 59m
United Airlines
Deal found 3/31![United Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 9/47:00 am
DRO
- PWM
1 stop9h 31m
American Airlines
Tue 9/88:01 am
PWM
- DRO
2 stops13h 59m
American Airlines
Deal found 4/2![American Airlines logo]()
$490
This Southwest deal was found by Cheapflights users on 4/3. 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.
Sat 4/188:30 am
MTJ
- BOS
2 stops11h 35m
Southwest
Wed 4/2211:40 am
BOS
- MTJ
2 stops10h 15m
Southwest
Deal found 4/3![Southwest logo]()
$369
Last-minute flights from Colorado to MaineDiscover last-minute flight deals from Colorado to Maine. Data last updated April 3, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Maine. Data last updated April 3, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/29. 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 4/207:35 am
DEN
- BOS
1 stop8h 30m
Southwest
Tue 4/285:35 am
BOS
- DEN
Nonstop4h 30m
Southwest
Deal found 3/29![Southwest logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 4/2211:00 am
DEN
- BOS
2 stops12h 31m
Multiple Airlines
Tue 4/286:00 pm
BOS
- DEN
1 stop17h 40m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$200
This KAYAK deal was found by Cheapflights users on 3/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:59 pm
DEN
- BOS
Nonstop3h 48m
JetBlue
Sat 5/97:31 pm
BOS
- DEN
Nonstop4h 42m
JetBlue
Deal found 3/30![JetBlue logo]()
$207
This Frontier deal was found by Cheapflights users on 3/30. 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.
Tue 4/281:09 pm
DEN
- BOS
1 stop10h 22m
Frontier
Sun 5/36:00 am
BOS
- DEN
1 stop8h 09m
Frontier
Deal found 3/30![Frontier logo]()
$210
This Kissandfly.com deal was found by Cheapflights users on 3/31. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
DEN
- BOS
1 stop5h 51m
Frontier
Wed 5/612:01 pm
BOS
- DEN
1 stop12h 23m
Frontier
Deal found 3/31![Frontier logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:00 pm
DEN
- BOS
1 stop10h 31m
Frontier
Mon 5/412:31 pm
BOS
- DEN
1 stop11h 13m
Frontier
Deal found 3/31![Frontier logo]()
$204
This Frontier deal was found by Cheapflights users on 3/31. 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 5/11:00 pm
DEN
- BOS
1 stop10h 31m
Frontier
Wed 5/612:01 pm
BOS
- DEN
1 stop12h 23m
Frontier
Deal found 3/31![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/411:59 pm
DEN
- BOS
2 stops33h 07m
Frontier
Sat 5/98:40 am
BOS
- DEN
1 stop7h 52m
Frontier
Deal found 3/30![Frontier logo]()
$203
This Cheapflightsfares deal was found by Cheapflights users on 3/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:28 pm
DEN
- BOS
Nonstop3h 54m
JetBlue
Mon 5/117:31 pm
BOS
- DEN
Nonstop4h 42m
JetBlue
Deal found 3/31![JetBlue logo]()
$202
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/91:39 pm
COS
- BOS
1 stop8h 25m
American Airlines
Tue 5/127:00 am
BOS
- COS
1 stop7h 49m
American Airlines
Deal found 3/31![American Airlines logo]()
$209
This CheapOair deal was found by Cheapflights users on 3/30. 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.
Fri 5/296:03 am
DEN
- BOS
1 stop27h 03m
Multiple Airlines
Tue 6/26:45 pm
BOS
- DEN
Nonstop4h 52m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$201
This Southwest deal was found by Cheapflights users on 4/1. 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.
Fri 5/2912:50 pm
DEN
- BOS
1 stop8h 20m
Southwest
Wed 6/35:35 am
BOS
- DEN
Nonstop4h 30m
Southwest
Deal found 4/1![Southwest logo]()
$209
One-way flights from Colorado to MaineSearch for one-way flight options from Colorado to Maine. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
Search for one-way flight options from Colorado to Maine. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
This Southwest deal was found by Cheapflights users on 4/1. 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.
Tue 5/194:05 pm
COS
- BOS
1 stop6h 00m
Southwest
Deal found 4/1![Southwest logo]()
$96
This Southwest deal was found by Cheapflights users on 3/31. 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 4/2912:40 pm
COS
- BOS
2 stops7h 40m
Southwest
Deal found 3/31![Southwest logo]()
$101
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/291:33 pm
COS
- BOS
1 stop8h 26m
United Airlines
Deal found 3/31![United Airlines logo]()
$114
This JetBlue deal was found by Cheapflights users on 4/2. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1711:37 pm
DEN
- BOS
Nonstop3h 53m
JetBlue
Deal found 4/2![JetBlue logo]()
$115
This American Airlines deal was found by Cheapflights users on 3/30. 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 5/136:19 am
DEN
- BOS
1 stop8h 26m
American Airlines
Deal found 3/30![American Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/2111:05 pm
DEN
- BOS
1 stop12h 12m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 4/2. 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.
Mon 5/1812:55 pm
DEN
- BOS
2 stops8h 20m
Southwest
Deal found 4/2![Southwest logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 4/3. 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 5/136:30 am
DEN
- BOS
1 stop16h 54m
Frontier
Deal found 4/3![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/1511:59 pm
DEN
- BOS
1 stop10h 03m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/411:59 pm
DEN
- BOS
2 stops33h 07m
Frontier
Deal found 3/31![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/1511:59 pm
DEN
- BOS
2 stops9h 34m
Frontier
Deal found 3/31![Frontier logo]()
$123
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/1711:59 pm
DEN
- BOS
1 stop7h 12m
United Airlines
Deal found 3/31![United Airlines logo]()
$124
Find flight deals from Colorado to Maine
Keep the following information in mind while searching for Colorado to Maine flight deals. Data was last updated April 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $199 (Southwest) |
One-way from | $96 (Southwest) |
Popular in | July |
Cheapest in | January |
Average price | $391 |
Good round-trip deal | $537 or less |
Good one-way deal | $328 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado 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 April 3, 2026.
Use the filters below to find and compare flights from Colorado to Maine that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Thu 4/30
5:45 am-4:05 pm
1 stop8h 20m
Boston Logan Intl
Wed 5/6
5:45 am-9:55 am
1 stop6h 10m
$209
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Mon 6/1
11:55 pm-8:15 am
1 stop6h 20m
Boston Logan Intl
Mon 6/8
5:50 pm-10:55 pm
1 stop7h 05m
$227
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Tue 6/2
3:00 pm-10:20 pm
1 stop5h 20m
Boston Logan Intl
Sat 6/6
12:35 pm-6:25 pm
2 stops7h 50m
$262
Quickest round-trip
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Mon 6/1
7:00 pm-12:50 am
Nonstop3h 50m
Boston Logan Intl
Sat 6/13
6:40 am-9:05 am
Nonstop4h 25m
$267
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Mon 6/1
11:59 pm-5:58 am
Nonstop3h 59m
Boston Logan Intl
Mon 6/8
8:39 pm-11:26 pm
Nonstop4h 47m
$277
Colorado SpringsBoston
COS - BOS
COSBOS
Colorado Springs
Thu 8/27
10:57 am-11:17 pm
2 stops10h 20m
Boston Logan Intl
Sun 8/30
5:30 am-12:48 pm
2 stops9h 18m
$288
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Wed 5/20
1:15 pm-10:30 pm
2 stops7h 15m
Boston Logan Intl
Wed 5/27
6:00 pm-10:40 pm
1 stop6h 40m
$304
Colorado SpringsBoston
COS - BOS
COSBOS
Colorado Springs
Sat 5/9
8:15 am-7:15 pm
2 stops9h 00m
Boston Logan Intl
Tue 5/12
8:50 am-9:27 pm
2 stops14h 37m
$308
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Mon 4/20
12:55 pm-11:15 pm
2 stops8h 20m
Boston Logan Intl
Tue 4/28
7:35 am-2:20 pm
2 stops8h 45m
$309
DenverBoston
DEN - BOS
DENBOS
Denver Intl
Tue 6/23
11:59 pm-8:17 am
1 stop6h 18m
Boston Logan Intl
Mon 6/29
8:39 pm-11:26 pm
Nonstop4h 47m
$317
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Colorado to Maine
Have a flexible travel schedule? Discover the best time to fly to Maine from Colorado with our price prediction graph.
DEN-BOS
COS-BOS
COS-PWM
DEN-BGR
DEN-PWM
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 Colorado to Maine
USCO-USME
DEN-BOS
COS-BOS
COS-PWM
DEN-BGR
What is the cheapest month to book a flight from Colorado to Maine?
Currently, August is the cheapest month in which you can book a flight from Colorado to Maine (average of $197). Flying from Colorado to Maine in February is currently the most expensive (average of $300). 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 Colorado to Maine?
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 April 3, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Colorado to Maine by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Colorado to Maine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Colorado to Maine
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Maine by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Colorado to Maine by cabin class
Find flights from Colorado to Maine, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Colorado and Maine flights
Browse other Colorado and Maine flight options. Last updated on April 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Maine
Find the right flight back to Colorado after your stay in Maine
Colorado to Maine flights
Consider these flights traveling from Colorado to Maine.
Top 6 airlines flying from Colorado to Maine
Discover the top 6 airlines that operate flights from Colorado 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 April 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$129 | Average$207 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$192 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$192 | Average$339 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$481 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$259 | Average$473 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$288 | Average$584 | FlexibilityNo cancel fee | On-time69% |