$142+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
May 3 — May 101
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 April 3, 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 April 3, 2026.
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.
Wed 4/226:00 am
BOS
- SFO
1 stop14h 34m
Multiple Airlines
Wed 4/298:45 pm
SFO
- BOS
Nonstop5h 42m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$264
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:07 am
BOS
- SFO
1 stop27h 34m
Multiple Airlines
Wed 5/273:10 pm
SFO
- BOS
Nonstop5h 48m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$266
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BOS
- SFO
1 stop14h 34m
Multiple Airlines
Fri 5/110:50 pm
SFO
- BOS
1 stop8h 39m
Multiple Airlines
Deal found 3/31![Multiple Airlines 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 5/812:01 pm
BOS
- SFO
1 stop10h 33m
Multiple Airlines
Sat 5/239:00 pm
SFO
- BOS
Nonstop5h 44m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$269
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Sun 5/310:38 pm
SFO
- BOS
1 stop9h 47m
Frontier
Deal found 3/29![Frontier logo]()
$270
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:55 pm
BOS
- SFO
Nonstop6h 36m
JetBlue
Wed 7/2910:17 pm
SFO
- BOS
Nonstop5h 43m
JetBlue
Deal found 4/1![JetBlue logo]()
$272
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:19 pm
BOS
- SFO
Nonstop6h 40m
JetBlue
Sat 5/911:10 pm
SFO
- BOS
Nonstop5h 45m
JetBlue
Deal found 4/2![JetBlue logo]()
$273
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:01 pm
BOS
- SFO
1 stop10h 33m
Multiple Airlines
Sun 5/108:44 pm
SFO
- BOS
Nonstop5h 44m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$274
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:00 am
BOS
- SFO
1 stop16h 34m
Multiple Airlines
Sun 5/176:16 am
SFO
- BOS
1 stop20h 28m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$275
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.
Wed 4/156:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Thu 4/3010:38 pm
SFO
- BOS
1 stop10h 09m
Frontier
Deal found 3/31![Frontier logo]()
$276
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:40 am
BOS
- SFO
Nonstop6h 49m
Delta
Sat 5/91:00 pm
SFO
- BOS
Nonstop5h 50m
Delta
Deal found 4/1![Delta logo]()
$277
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.
Sat 4/258:19 pm
BOS
- SFO
Nonstop6h 40m
JetBlue
Sat 5/28:25 pm
SFO
- BOS
Nonstop5h 42m
JetBlue
Deal found 4/2![JetBlue logo]()
$278
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 April 3, 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 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 8/185:45 am
PWM
- SFO
2 stops11h 55m
Southwest
Tue 8/2511:05 pm
SFO
- PWM
1 stop12h 10m
Southwest
Deal found 4/1![Southwest logo]()
$302
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:09 pm
BOS
- SFO
1 stop13h 47m
JetBlue
Wed 4/292:00 pm
SFO
- BOS
Nonstop5h 45m
JetBlue
Deal found 3/29![JetBlue logo]()
$329
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:25 pm
PWM
- SFO
1 stop9h 05m
United Airlines
Wed 5/2710:35 pm
SFO
- PWM
1 stop8h 32m
United Airlines
Deal found 3/29![United Airlines logo]()
$340
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
BOS
- SFO
1 stop10h 21m
Alaska Airlines
Tue 5/129:00 am
SFO
- BOS
1 stop11h 59m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$363
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.
Thu 5/712:55 pm
PWM
- SFO
1 stop7h 54m
Delta
Sat 5/1611:25 am
SFO
- PWM
1 stop8h 44m
Delta
Deal found 3/29![Delta logo]()
$375
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.
Sat 4/253:15 pm
BGR
- SFO
1 stop9h 13m
American Airlines
Fri 5/112:31 pm
SFO
- BGR
1 stop8h 54m
American Airlines
Deal found 4/2![American Airlines logo]()
$424
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:29 pm
AUG
- SFO
1 stop11h 30m
Multiple Airlines
Mon 5/118:44 pm
SFO
- AUG
1 stop10h 44m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$609
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.
Thu 4/232:30 pm
BOS
- SFO
1 stop11h 50m
Southwest
Wed 4/297:15 pm
SFO
- BOS
2 stops9h 50m
Southwest
Deal found 3/30![Southwest logo]()
$322
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.
Fri 5/158:25 pm
BOS
- SFO
1 stop8h 25m
United Airlines
Sun 5/179:25 pm
SFO
- BOS
Nonstop6h 02m
United Airlines
Deal found 4/2![United Airlines logo]()
$353
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 5/62:25 pm
BOS
- SFO
2 stops11h 50m
Southwest
Mon 5/1111:25 pm
SFO
- BOS
2 stops9h 50m
Southwest
Deal found 4/2![Southwest logo]()
$332
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
BOS
- SFO
2 stops17h 20m
Alaska Airlines
Fri 5/87:00 am
SFO
- BOS
1 stop13h 59m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$379
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 4/296:33 pm
PWM
- SFO
1 stop9h 06m
United Airlines
Wed 5/611:56 pm
SFO
- PWM
1 stop7h 27m
United Airlines
Deal found 3/31![United Airlines logo]()
$356
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:15 am
BOS
- SFO
1 stop20h 26m
Delta
Tue 7/710:10 pm
SFO
- BOS
Nonstop5h 35m
Delta
Deal found 3/31![Delta logo]()
$395
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:15 am
BOS
- SFO
1 stop20h 26m
Delta
Wed 7/810:10 pm
SFO
- BOS
Nonstop5h 35m
Delta
Deal found 3/31![Delta logo]()
$395
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 5/52:25 pm
BOS
- SFO
2 stops11h 50m
Southwest
Wed 5/135:40 am
SFO
- BOS
2 stops9h 55m
Southwest
Deal found 3/31![Southwest logo]()
$369
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.
Thu 4/165:30 am
BOS
- SFO
Nonstop6h 41m
United Airlines
Mon 4/209:16 pm
SFO
- BOS
Nonstop6h 05m
United Airlines
Deal found 3/30![United Airlines logo]()
$420
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.
Thu 7/23:10 pm
PWM
- SFO
2 stops12h 20m
Southwest
Sun 7/1210:50 pm
SFO
- PWM
1 stop12h 40m
Southwest
Deal found 4/2![Southwest logo]()
$404
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 4/256:00 am
BGR
- SFO
2 stops11h 55m
Delta
Fri 5/111:59 pm
SFO
- BGR
2 stops13h 20m
Delta
Deal found 4/2![Delta logo]()
$449
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.
Thu 7/92:25 pm
BGR
- SFO
1 stop10h 43m
American Airlines
Sun 7/1210:17 am
SFO
- BGR
1 stop9h 42m
American Airlines
Deal found 4/1![American Airlines logo]()
$545
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.
Thu 4/304:50 pm
PWM
- SFO
1 stop11h 00m
United Airlines
Mon 5/411:05 pm
SFO
- PWM
1 stop8h 13m
United Airlines
Deal found 3/31![United Airlines logo]()
$421
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:29 pm
AUG
- SFO
1 stop10h 20m
JetBlue
Tue 6/211:59 pm
SFO
- AUG
1 stop8h 52m
JetBlue
Deal found 3/30![JetBlue logo]()
$612
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.
Wed 6/32:25 pm
BOS
- SFO
2 stops11h 50m
Southwest
Sun 6/76:50 pm
SFO
- BOS
2 stops10h 20m
Southwest
Deal found 3/29![Southwest logo]()
$433
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 4/224:50 pm
BOS
- SFO
1 stop9h 05m
United Airlines
Fri 4/2412:30 pm
SFO
- BOS
Nonstop5h 58m
United Airlines
Deal found 3/31![United Airlines logo]()
$436
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:30 am
PWM
- SFO
1 stop21h 23m
Delta
Sat 8/811:59 pm
SFO
- PWM
1 stop9h 58m
Delta
Deal found 3/31![Delta logo]()
$507
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:00 pm
RKD
- SFO
1 stop12h 31m
JetBlue
Wed 8/266:00 am
SFO
- RKD
1 stop9h 11m
JetBlue
Deal found 4/1![JetBlue logo]()
$619
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.
Wed 4/1511:23 am
AUG
- SFO
1 stop15h 36m
Multiple Airlines
Sun 4/198:45 pm
SFO
- AUG
1 stop14h 34m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$694
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.
Thu 4/163:15 pm
BGR
- SFO
1 stop11h 00m
American Airlines
Wed 4/2212:31 pm
SFO
- BGR
1 stop8h 54m
American Airlines
Deal found 4/2![American Airlines logo]()
$632
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 4/221:00 pm
PWM
- SFO
1 stop11h 25m
Southwest
Wed 4/2910:40 pm
SFO
- PWM
2 stops10h 30m
Southwest
Deal found 4/2![Southwest logo]()
$449
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:29 pm
AUG
- SFO
1 stop11h 30m
JetBlue
Tue 5/128:44 pm
SFO
- AUG
1 stop10h 44m
JetBlue
Deal found 4/1![JetBlue logo]()
$625
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.
Tue 5/53:23 pm
PWM
- SFO
1 stop10h 19m
United Airlines
Wed 5/611:10 pm
SFO
- PWM
1 stop8h 13m
United Airlines
Deal found 4/2![United Airlines logo]()
$499
Last-minute flights from Maine to San FranciscoDiscover last-minute flight deals from Maine to San Francisco. Data last updated April 3, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to San Francisco. Data last updated April 3, 2026 and is based on user searches.
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.
Wed 4/156:00 am
BOS
- SFO
1 stop14h 34m
Multiple Airlines
Mon 4/203:10 pm
SFO
- BOS
Nonstop5h 48m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$269
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.
Wed 4/156:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Thu 4/3010:38 pm
SFO
- BOS
1 stop10h 09m
Frontier
Deal found 3/31![Frontier logo]()
$276
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.
Wed 4/226:00 am
BOS
- SFO
1 stop14h 34m
Multiple Airlines
Wed 4/298:45 pm
SFO
- BOS
Nonstop5h 42m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$264
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.
Sat 4/258:19 pm
BOS
- SFO
Nonstop6h 40m
JetBlue
Wed 4/298:45 pm
SFO
- BOS
Nonstop5h 42m
JetBlue
Deal found 3/31![JetBlue logo]()
$272
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:40 am
BOS
- SFO
Nonstop6h 49m
Delta
Sat 5/91:00 pm
SFO
- BOS
Nonstop5h 50m
Delta
Deal found 4/1![Delta logo]()
$277
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.
Sat 4/258:19 pm
BOS
- SFO
Nonstop6h 40m
JetBlue
Sat 5/28:25 pm
SFO
- BOS
Nonstop5h 42m
JetBlue
Deal found 4/2![JetBlue logo]()
$278
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BOS
- SFO
1 stop14h 34m
Multiple Airlines
Fri 5/110:50 pm
SFO
- BOS
1 stop8h 39m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$267
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
BOS
- SFO
1 stop14h 34m
Frontier
Sun 5/310:38 pm
SFO
- BOS
1 stop9h 47m
Frontier
Deal found 3/29![Frontier logo]()
$270
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
BOS
- SFO
1 stop14h 34m
Multiple Airlines
Wed 5/67:15 am
SFO
- BOS
2 stops13h 44m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$273
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:01 pm
BOS
- SFO
1 stop10h 33m
Multiple Airlines
Sun 5/108:44 pm
SFO
- BOS
Nonstop5h 44m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$274
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:00 am
BOS
- SFO
1 stop16h 34m
Multiple Airlines
Sun 5/176:16 am
SFO
- BOS
1 stop20h 28m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$275
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:07 am
BOS
- SFO
1 stop27h 34m
Multiple Airlines
Wed 5/273:10 pm
SFO
- BOS
Nonstop5h 48m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$266
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 April 3, 2026.
Search for one-way flight options from Maine to San Francisco. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:30 am
BOS
- SFO
2 stops29h 43m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$142
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:01 pm
BOS
- SFO
1 stop10h 33m
Frontier
Deal found 3/31![Frontier logo]()
$143
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 4/216:00 pm
BOS
- SFO
2 stops26h 34m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$144
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2712:01 pm
BOS
- SFO
1 stop10h 24m
Frontier
Deal found 3/30![Frontier logo]()
$145
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.
Wed 6/102:24 pm
PWM
- SFO
1 stop9h 55m
American Airlines
Deal found 3/31![American Airlines logo]()
$146
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 4/226:00 pm
BOS
- SFO
2 stops26h 34m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$146
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:19 pm
BOS
- SFO
Nonstop6h 40m
JetBlue
Deal found 3/31![JetBlue logo]()
$147
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 5/279:27 pm
BOS
- SFO
Nonstop6h 39m
JetBlue
Deal found 3/31![JetBlue logo]()
$148
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.
Wed 5/137:27 pm
BOS
- SFO
1 stop8h 49m
United Airlines
Deal found 4/2![United Airlines logo]()
$149
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.
Fri 4/246:00 pm
BOS
- SFO
2 stops26h 34m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$150
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.
Tue 5/56:00 am
PWM
- SFO
2 stops12h 25m
American Airlines
Deal found 3/30![American Airlines logo]()
$151
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.
Tue 6/306:00 am
BOS
- SFO
1 stop16h 25m
Frontier
Deal found 3/31![Frontier logo]()
$151
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 April 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $264 (CheapOair) |
One-way from | $142 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $432 |
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 April 3, 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
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Tue 8/18
5:45 am-2:40 pm
2 stops11h 55m
San Francisco
Tue 8/25
11:05 pm-2:15 pm
1 stop12h 10m
$302
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Thu 4/23
2:30 pm-11:20 pm
1 stop11h 50m
San Francisco
Wed 4/29
7:15 pm-8:05 am
2 stops9h 50m
$322
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Thu 4/23
1:09 pm-11:56 pm
1 stop13h 47m
San Francisco
Wed 4/29
2:00 pm-10:45 pm
Nonstop5h 45m
$329
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Wed 5/6
2:25 pm-11:15 pm
2 stops11h 50m
San Francisco
Mon 5/11
11:25 pm-12:15 pm
2 stops9h 50m
$332
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Fri 5/22
6:25 pm-12:30 am
1 stop9h 05m
San Francisco
Wed 5/27
10:35 pm-10:07 am
1 stop8h 32m
$340
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Fri 5/15
8:25 pm-1:50 am
1 stop8h 25m
San Francisco
Sun 5/17
9:25 pm-6:27 am
Nonstop6h 02m
$353
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Wed 4/29
6:33 pm-12:39 am
1 stop9h 06m
San Francisco
Wed 5/6
11:56 pm-10:23 am
1 stop7h 27m
$356
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Sat 5/2
7:00 am-2:21 pm
1 stop10h 21m
San Francisco
Tue 5/12
9:00 am-11:59 pm
1 stop11h 59m
$363
BostonSan Francisco
BOS - SFO
BOSSFO
Boston Logan Intl
Tue 5/5
2:25 pm-11:15 pm
2 stops11h 50m
San Francisco
Wed 5/13
5:40 am-6:35 pm
2 stops9h 55m
$369
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Thu 5/7
12:55 pm-5:49 pm
1 stop7h 54m
San Francisco
Sat 5/16
11:25 am-11:09 pm
1 stop8h 44m
$375
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
PWM-SFO
BGR-SFO
AUG-SFO
RKD-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
PWM-SFO
BGR-SFO
AUG-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 $209). Flying from Maine to San Francisco in December is currently the most expensive (average of $311). 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 San Francisco?
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 Cruz
Santa Clara
Livermore
Roseville
Rancho Cordova
San Bruno
Watsonville
San Ramon
Sunnyvale
Vacaville
San Carlos
Redwood City
Turlock
San Lorenzo
Davis
Manteca
Union City
Elk Grove
Foster City
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.
Alternative routes
Complete your trip
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Other flight options
Popular flights
San Francisco flight routes
Top destinations
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 April 3, 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 April 3, 2026.
Maine to San Francisco flights
Consider these flights traveling from Maine to San Francisco.
Top 5 airlines flying from Maine to San Francisco
Discover the top 5 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 April 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$236 | Average$358 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$243 | Average$467 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$268 | Average$543 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$272 | Average$498 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$276 | Average$407 | FlexibilityNo cancel fee | On-timeN/A |