$145+ Cheap flights from Maine to San Francisco (SFO)
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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Cheapest flights from Maine to San FranciscoExplore the most affordable flight options available from Maine to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from Maine to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Wed 8/1910:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/24![Frontier logo]()
$276
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:15 am
BOS
- SFO
1 stop8h 23m
JetBlue
Tue 9/158:25 pm
SFO
- BOS
1 stop8h 34m
JetBlue
Deal found 7/22![JetBlue logo]()
$277
This Frontier deal was found by Cheapflights users on 7/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Tue 8/2510:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/22![Frontier logo]()
$278
This deal was found by Cheapflights users on 7/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am
PWM
- SFO
1 stop10h 08m
JetBlue
Sat 11/1412:30 pm
SFO
- PWM
1 stop8h 13m
JetBlue
Deal found 7/22![JetBlue logo]()
$279
This JetBlue deal was found by Cheapflights users on 7/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:11 pm
BOS
- SFO
1 stop10h 20m
JetBlue
Mon 9/218:25 pm
SFO
- BOS
1 stop11h 26m
JetBlue
Deal found 7/22![JetBlue logo]()
$279
This Expedia deal was found by Cheapflights users on 7/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:45 pm
BOS
- SFO
1 stop9h 18m
Multiple Airlines
Sun 9/65:19 pm
SFO
- BOS
1 stop9h 28m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$280
This Frontier deal was found by Cheapflights users on 7/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Tue 9/110:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/25![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Thu 8/209:36 am
BOS
- SFO
2 stops14h 04m
Frontier
Mon 8/2410:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/25![Frontier logo]()
$282
This Expedia deal was found by Cheapflights users on 7/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Tue 8/2510:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/22![Frontier logo]()
$283
This Expedia deal was found by Cheapflights users on 7/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:54 pm
BOS
- SFO
1 stop10h 14m
Multiple Airlines
Tue 9/227:50 am
SFO
- BOS
Nonstop5h 44m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$284
This Expedia deal was found by Cheapflights users on 7/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:45 pm
BOS
- SFO
1 stop9h 18m
Multiple Airlines
Mon 9/78:25 am
SFO
- BOS
1 stop18h 22m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/209:36 am
BOS
- SFO
2 stops14h 04m
Frontier
Sun 8/2310:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/24![Frontier logo]()
$286
Best flights from Maine to San FranciscoDiscover carefully curated flight deals from Maine to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from Maine to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This Delta deal was found by Cheapflights users on 7/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:51 pm
BOS
- SFO
Nonstop6h 33m
Delta
Sat 10/1012:40 pm
SFO
- BOS
Nonstop5h 40m
Delta
Deal found 7/21![Delta logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 9/25:45 am
BOS
- SFO
1 stop8h 27m
United Airlines
Wed 9/211:18 pm
SFO
- BOS
Nonstop5h 56m
United Airlines
Deal found 7/22![United Airlines logo]()
$347
This JetBlue deal was found by Cheapflights users on 7/25. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:50 am
BOS
- SFO
Nonstop6h 33m
JetBlue
Sun 9/612:30 pm
SFO
- BOS
Nonstop6h 22m
JetBlue
Deal found 7/25![JetBlue logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:12 am
BOS
- SFO
1 stop10h 15m
Alaska Airlines
Sat 9/196:58 pm
SFO
- BOS
1 stop8h 11m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/23. 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.
Sat 9/2612:10 pm
BOS
- SFO
2 stops11h 25m
Southwest
Wed 9/3011:15 am
SFO
- BOS
1 stop10h 15m
Southwest
Deal found 7/23![Southwest logo]()
$367
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:40 pm
BGR
- SFO
1 stop11h 27m
American Airlines
Mon 10/269:31 pm
SFO
- BGR
1 stop9h 51m
American Airlines
Deal found 7/24![American Airlines logo]()
$379
This Priceline deal was found by Cheapflights users on 7/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/103:15 pm
AUG
- SFO
2 stops11h 24m
Multiple Airlines
Mon 12/147:59 pm
SFO
- AUG
2 stops11h 36m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$582
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/146:13 pm
BOS
- SFO
Nonstop6h 31m
United Airlines
Mon 8/179:10 pm
SFO
- BOS
Nonstop5h 52m
United Airlines
Deal found 7/25![United Airlines logo]()
$368
This JetBlue deal was found by Cheapflights users on 7/25. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:39 pm
BOS
- SFO
1 stop10h 59m
JetBlue
Fri 9/43:19 pm
SFO
- BOS
Nonstop6h 16m
JetBlue
Deal found 7/25![JetBlue logo]()
$372
This Southwest deal was found by Cheapflights users on 7/22. 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 8/295:40 am
PWM
- SFO
1 stop8h 15m
Southwest
Tue 9/226:35 am
SFO
- PWM
2 stops11h 35m
Southwest
Deal found 7/22![Southwest logo]()
$374
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:12 am
BOS
- SFO
2 stops13h 10m
Alaska Airlines
Fri 9/258:25 am
SFO
- BOS
1 stop18h 22m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:09 pm
PWM
- SFO
1 stop10h 26m
Delta
Mon 11/27:30 am
SFO
- PWM
1 stop10h 31m
Delta
Deal found 7/22![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Sun 9/137:30 am
PWM
- SFO
Nonstop6h 35m
United Airlines
Sun 9/205:00 am
SFO
- PWM
1 stop9h 54m
United Airlines
Deal found 7/23![United Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:51 am
BOS
- SFO
1 stop14h 40m
Alaska Airlines
Fri 10/167:03 am
SFO
- BOS
1 stop19h 18m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 7/25. 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 10/224:10 pm
BGR
- SFO
1 stop11h 24m
Delta
Mon 10/2611:45 pm
SFO
- BGR
2 stops12h 45m
Delta
Deal found 7/25![Delta logo]()
$384
This Southwest deal was found by Cheapflights users on 7/24. 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.
Wed 10/72:50 pm
BOS
- SFO
2 stops10h 30m
Southwest
Fri 10/92:15 pm
SFO
- BOS
1 stop7h 55m
Southwest
Deal found 7/24![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Tue 8/256:00 am
BGR
- SFO
1 stop8h 25m
United Airlines
Fri 8/2812:55 am
SFO
- BGR
1 stop10h 28m
United Airlines
Deal found 7/23![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 7/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:28 am
BGR
- SFO
1 stop10h 46m
Delta
Sat 9/1210:00 pm
SFO
- BGR
2 stops14h 34m
Delta
Deal found 7/21![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 9/45:45 am
BGR
- SFO
1 stop8h 47m
American Airlines
Wed 9/1610:22 am
SFO
- BGR
2 stops11h 14m
American Airlines
Deal found 7/25![American Airlines logo]()
$468
This Southwest deal was found by Cheapflights users on 7/21. 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 8/113:20 pm
BOS
- SFO
2 stops10h 55m
Southwest
Tue 8/1811:15 am
SFO
- BOS
1 stop10h 10m
Southwest
Deal found 7/21![Southwest logo]()
$406
This Delta deal was found by Cheapflights users on 7/24. 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.
Wed 8/196:25 am
BOS
- SFO
1 stop18h 50m
Delta
Sun 8/239:48 pm
SFO
- BOS
Nonstop5h 42m
Delta
Deal found 7/24![Delta logo]()
$400
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 11/275:20 am
PWM
- SFO
2 stops12h 05m
Southwest
Thu 12/39:25 pm
SFO
- PWM
1 stop9h 30m
Southwest
Deal found 7/24![Southwest logo]()
$408
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:05 am
BGR
- SFO
2 stops11h 53m
American Airlines
Sat 8/2210:53 pm
SFO
- BGR
1 stop10h 12m
American Airlines
Deal found 7/21![American Airlines logo]()
$510
This United deal was found by Cheapflights users on 7/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:07 pm
AUG
- SFO
1 stop24h 36m
Multiple Airlines
Wed 9/309:15 pm
SFO
- AUG
1 stop20h 25m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$584
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1012:57 pm
BGR
- SFO
2 stops11h 59m
American Airlines
Sat 10/176:00 am
SFO
- BGR
1 stop8h 09m
American Airlines
Deal found 7/21![American Airlines logo]()
$518
This Southwest deal was found by Cheapflights users on 7/21. 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 9/295:45 am
PWM
- SFO
2 stops11h 55m
Southwest
Thu 10/19:55 am
SFO
- PWM
2 stops11h 00m
Southwest
Deal found 7/21![Southwest logo]()
$438
This Delta deal was found by Cheapflights users on 7/25. 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.
Wed 9/212:47 pm
PWM
- SFO
1 stop8h 26m
Delta
Wed 9/166:23 am
SFO
- PWM
2 stops14h 05m
Delta
Deal found 7/25![Delta logo]()
$455
This Southwest deal was found by Cheapflights users on 7/23. 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.
Tue 10/136:00 pm
PWM
- SFO
1 stop8h 35m
Southwest
Sun 10/189:35 pm
SFO
- PWM
1 stop9h 15m
Southwest
Deal found 7/23![Southwest logo]()
$443
This Priceline deal was found by Cheapflights users on 7/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:45 pm
RKD
- SFO
1 stop12h 15m
Multiple Airlines
Sun 10/2510:10 pm
SFO
- RKD
1 stop10h 42m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$664
This Southwest deal was found by Cheapflights users on 7/25. 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.
Fri 9/45:55 am
PWM
- SFO
2 stops11h 15m
Southwest
Mon 9/77:10 pm
SFO
- PWM
2 stops11h 45m
Southwest
Deal found 7/25![Southwest logo]()
$472
Last-minute flights from Maine to San FranciscoDiscover last-minute flight deals from Maine to San Francisco. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to San Francisco. Data last updated July 25, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:59 am
BOS
- SFO
1 stop10h 14m
Frontier
Sat 8/2910:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/25![Frontier logo]()
$289
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Wed 8/1910:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/24![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 7/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Wed 8/2610:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/22![Frontier logo]()
$277
This Frontier deal was found by Cheapflights users on 7/21. 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 8/1912:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Sat 8/2210:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/21![Frontier logo]()
$279
This Frontier deal was found by Cheapflights users on 7/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Tue 8/2510:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/22![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Thu 8/209:36 am
BOS
- SFO
2 stops14h 04m
Frontier
Mon 8/2410:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/25![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Thu 8/209:36 am
BOS
- SFO
2 stops14h 04m
Frontier
Wed 8/2610:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/25![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/209:36 am
BOS
- SFO
2 stops14h 04m
Frontier
Sun 8/2310:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/24![Frontier logo]()
$286
This Expedia deal was found by Cheapflights users on 7/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Tue 8/2510:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/22![Frontier logo]()
$283
This Frontier deal was found by Cheapflights users on 7/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Sun 8/2310:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/22![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 7/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:45 pm
BOS
- SFO
1 stop9h 18m
Frontier
Tue 8/2510:35 pm
SFO
- BOS
1 stop10h 12m
Frontier
Deal found 7/25![Frontier logo]()
$281
This Expedia deal was found by Cheapflights users on 7/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:45 pm
BOS
- SFO
1 stop9h 18m
Multiple Airlines
Mon 9/78:25 am
SFO
- BOS
1 stop18h 22m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$285
One-way flights from Maine to San FranciscoSearch for one-way flight options from Maine to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from Maine to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Priceline deal was found by Cheapflights users on 7/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:30 am
PWM
- SFO
1 stop10h 08m
JetBlue
Deal found 7/23![JetBlue logo]()
$145
This Priceline deal was found by Cheapflights users on 7/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:40 pm
PWM
- SFO
1 stop12h 58m
JetBlue
Deal found 7/25![JetBlue logo]()
$150
This Super.com deal was found by Cheapflights users on 7/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1411:59 am
BOS
- SFO
1 stop10h 14m
Frontier
Deal found 7/22![Frontier logo]()
$163
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:00 am
BOS
- SFO
1 stop9h 45m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/221:00 pm
BOS
- SFO
2 stops24h 46m
Frontier
Deal found 7/22![Frontier logo]()
$165
This Super.com deal was found by Cheapflights users on 7/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:15 pm
BOS
- SFO
Nonstop6h 34m
JetBlue
Deal found 7/22![JetBlue logo]()
$166
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:00 am
BOS
- SFO
Nonstop6h 33m
JetBlue
Deal found 7/22![JetBlue logo]()
$167
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 8/197:45 am
BOS
- SFO
Nonstop6h 30m
United Airlines
Deal found 7/22![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Thu 8/136:00 am
BOS
- SFO
Nonstop6h 30m
United Airlines
Deal found 7/23![United Airlines logo]()
$170
This Super.com deal was found by Cheapflights users on 7/21. 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.
Mon 8/246:35 am
BOS
- SFO
Nonstop6h 30m
JetBlue
Deal found 7/21![JetBlue logo]()
$171
This Cheapflightsfares deal was found by Cheapflights users on 7/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:50 pm
BOS
- SFO
Nonstop6h 41m
JetBlue
Deal found 7/20![JetBlue logo]()
$172
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/185:51 am
BOS
- SFO
1 stop10h 27m
American Airlines
Deal found 7/20![American Airlines logo]()
$173
Find flight deals from Maine to San Francisco
Keep the following information in mind while searching for Maine to San Francisco flight deals. Data was last updated July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (JetBlue) |
One-way from | $135 (Priceline) |
Popular in | December |
Cheapest in | January |
Average price | $578 |
Good round-trip deal | $698 or less |
Good one-way deal | $363 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Maine to San Francisco 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 July 25, 2026.
Use the filters below to find and compare flights from Maine to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Thu 10/8
8:51 pm-12:24 am
Nonstop6h 33m
San Francisco
Sat 10/10
12:40 pm-9:20 pm
Nonstop5h 40m
$342
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Wed 9/2
5:45 am-11:12 am
1 stop8h 27m
San Francisco
Wed 9/2
11:18 pm-8:14 am
Nonstop5h 56m
$347
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Tue 9/1
9:50 am-1:23 pm
Nonstop6h 33m
San Francisco
Sun 9/6
12:30 pm-9:52 pm
Nonstop6h 22m
$357
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Sat 9/12
7:12 am-2:27 pm
1 stop10h 15m
San Francisco
Sat 9/19
6:58 pm-6:09 am
1 stop8h 11m
$359
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Sat 9/26
12:10 pm-8:35 pm
2 stops11h 25m
San Francisco
Wed 9/30
11:15 am-12:30 am
1 stop10h 15m
$367
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Fri 8/14
6:13 pm-9:44 pm
Nonstop6h 31m
San Francisco
Mon 8/17
9:10 pm-6:02 am
Nonstop5h 52m
$368
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Sun 9/13
7:30 am-11:05 am
Nonstop6h 35m
San Francisco
Sun 9/20
5:00 am-5:54 pm
1 stop9h 54m
$369
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Mon 8/31
4:39 pm-12:38 am
1 stop10h 59m
San Francisco
Fri 9/4
3:19 pm-12:35 am
Nonstop6h 16m
$372
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Sat 8/29
5:40 am-10:55 am
1 stop8h 15m
San Francisco
Tue 9/22
6:35 am-9:10 pm
2 stops11h 35m
$374
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Sat 9/19
7:12 am-5:22 pm
2 stops13h 10m
San Francisco
Fri 9/25
8:25 am-5:47 am
1 stop18h 22m
$378
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Maine to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Maine with our price prediction graph.
BOS-SFO
BGR-SFO
PWM-SFO
RKD-SFO
AUG-SFO
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 San Francisco
USME-SFO
BOS-SFO
BGR-SFO
PWM-SFO
RKD-SFO
What is the cheapest month to book a flight from Maine to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Maine to San Francisco (average of $407). Flying from Maine to San Francisco in December is currently the most expensive (average of $631). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ME to SFO?
Find hourly flight availability from Maine to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.
When flying from Maine to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Maine to San Francisco?
Airfare is below average for this route at the moment.
Maine to San Francisco flights typically cost between $428 and $800 in November.The cheapest round-trip price found within the last 5 days was $279 on JetBlue (Nov 4-Nov 14).
How far ahead should I book a flight from Maine to San Francisco?
The best time to book flights from Maine to San Francisco is 39 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.
Related info for your journey
Find useful and relevant information for your journey from Maine to San Francisco. 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 San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Fairfield
Roseville
Burlingame
Rancho Cordova
San Bruno
Cupertino
Emeryville
Newark
Watsonville
Hayward
Redwood City
San Carlos
San Ramon
Turlock
Vallejo
San Lorenzo
Davis
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Maine to San Francisco
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Francisco by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Maine to San Francisco by cabin class
Find flights from Maine to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Maine and San Francisco flights
Browse other Maine and San Francisco flight options. Last updated on July 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 25, 2026.
Maine to San Francisco flights
Consider these flights traveling from Maine to San Francisco.
Top 4 airlines flying from Maine to San Francisco
Discover the top 4 airlines that operate flights from Maine to San Francisco. 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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$268 | Average$506 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$488 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$416 | Average$558 | FlexibilityNo cancel fee | On-time63% |