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$130+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
1 adult, Economy
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Cheap flight deals from Maine to San Francisco

Cheapest flights from Maine to San Francisco
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 June 9, 2026.

This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 9/810:30 pm
SFO
-
PWM
1 stop8h 25m
Southwest
Deal found 6/8$266
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:55 am
PWM
-
SFO
1 stop10h 05m
Southwest
Tue 9/810:30 pm
SFO
-
PWM
1 stop8h 25m
Southwest
Deal found 6/8$289
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:40 am
PWM
-
SFO
2 stops10h 00m
Southwest
Wed 9/910:30 pm
SFO
-
PWM
1 stop8h 20m
Southwest
Deal found 6/8$295
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/195:45 am
PWM
-
SFO
1 stop8h 50m
Southwest
Sun 8/2310:30 pm
SFO
-
PWM
1 stop8h 20m
Southwest
Deal found 6/8$305
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 9/15:45 am
PWM
-
SFO
2 stops11h 20m
Southwest
Wed 9/910:30 pm
SFO
-
PWM
1 stop8h 20m
Southwest
Deal found 6/5$310
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 10/25:30 am
PWM
-
SFO
1 stop8h 45m
Southwest
Mon 10/59:40 pm
SFO
-
PWM
1 stop9h 05m
Southwest
Deal found 6/8$313
This CheapOair deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 6/268:55 pm
BOS
-
SFO
Nonstop6h 36m
Multiple Airlines
Wed 7/811:00 pm
SFO
-
BOS
1 stop8h 57m
Multiple Airlines
Deal found 6/6$316
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” 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 6/306:10 pm
BOS
-
SFO
Nonstop6h 37m
United Airlines
Wed 7/811:05 pm
SFO
-
BOS
Nonstop5h 56m
United Airlines
Deal found 6/4$317
This JetBlue deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 10/316:30 am
PWM
-
SFO
1 stop10h 08m
JetBlue
Tue 11/312:15 pm
SFO
-
PWM
1 stop8h 28m
JetBlue
Deal found 6/7$318
This Cheapflightsfares deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 8/285:01 am
BOS
-
SFO
1 stop11h 52m
JetBlue
Sun 8/303:45 pm
SFO
-
BOS
Nonstop5h 42m
JetBlue
Deal found 6/7$318
This Frontier deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/412:01 pm
BOS
-
SFO
1 stop10h 25m
Frontier
Sat 7/410:10 pm
SFO
-
BOS
1 stop9h 47m
Frontier
Deal found 6/7$319
This CheapOair deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 7/312:01 pm
BOS
-
SFO
1 stop10h 25m
Multiple Airlines
Thu 7/93:18 pm
SFO
-
BOS
Nonstop5h 41m
Multiple Airlines
Deal found 6/8$321

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 June 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$266
(Southwest)

One-way from

$130
(JetBlue)

Popular in

June

Cheapest in

September

Average price

$573

Good round-trip deal

$723 or less
Provider with most accurate pricing for Portland-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-San Francisco flights.
Search Deals
From Maine to San Francisco
Search Deals
One-way flight from Maine to San Francisco
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Maine to San Francisco.
Search Deals

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 June 9, 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

Price

Cheapest round-trip

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Sat 10/31

6:30 am-1:38 pm

1 stop10h 08m

San Francisco

Tue 11/3

12:15 pm-11:43 pm

1 stop8h 28m

$318

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Tue 8/25

7:45 am-12:55 pm

1 stop8h 10m

San Francisco

Sat 8/29

11:05 pm-12:45 pm

2 stops10h 40m

$326

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Mon 10/26

6:30 am-2:35 pm

2 stops11h 05m

San Francisco

Sat 10/31

10:50 pm-11:30 am

2 stops9h 40m

$347

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sun 8/23

5:55 am-1:10 pm

1 stop10h 15m

San Francisco

Wed 8/26

11:50 am-10:15 pm

1 stop7h 25m

$347

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Tue 9/15

4:25 pm-10:56 pm

1 stop9h 31m

San Francisco

Wed 9/23

9:46 am-11:47 pm

1 stop11h 01m

$369

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 8/19

5:45 am-11:35 am

1 stop8h 50m

San Francisco

Tue 8/25

10:30 pm-9:55 am

1 stop8h 25m

$369

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 12/2

12:50 pm-10:05 pm

2 stops12h 15m

San Francisco

Tue 12/8

9:25 pm-9:55 am

1 stop9h 30m

$374

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 7/21

3:45 pm-11:20 pm

2 stops10h 35m

San Francisco

Tue 7/28

10:50 pm-12:10 pm

2 stops10h 20m

$377

BangorSan Francisco

BGR - SFO

BGRSFO

Bangor

Thu 10/29

11:15 am-8:22 pm

2 stops12h 07m

San Francisco

Tue 11/3

9:30 pm-2:21 pm

2 stops13h 51m

$379
Quickest round-trip

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 7/27

6:35 am-10:05 am

Nonstop6h 30m

San Francisco

Mon 7/27

9:44 pm-6:28 am

Nonstop5h 44m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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.
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

What is the cheapest month to book a flight from Maine to San Francisco?

Currently, March is the cheapest month in which you can book a flight from Maine to San Francisco (average of $154). Flying from Maine to San Francisco in June is currently the most expensive (average of $303). 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?

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 58 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.

  • What airport do you fly into for flights to San Francisco from Maine?

    For a flight from Maine to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.0 mi from the center of the city.

  • How long is the flight from Maine to San Francisco?

    For as low as $326, JetBlue can have you in San Francisco from Maine in 8h 10m. Airlines will cover a distance of 2715 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Maine to San Francisco?

    Most travelers choose Boston Logan Intl - San Francisco, Portland - San Francisco or Bangor - San Francisco when deciding on the best route from Maine to San Francisco.

  • What are the cheapest flights from Maine to San Francisco?

    Looking at all options, your cheapest flight can be booked for $619. While the most popular route (Boston Logan Intl - San Francisco) can be booked for $245 on average, our data indicates $1,007 when flying from Maine to San Francisco.

  • Can I find deals for flights from Maine to San Francisco that include hotel bookings?

    Yes. In addition to deals on Maine to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maine to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to San Francisco.

  • Can I find deals for business class flights from Maine to San Francisco?

    Yes. Cheapflights offers flight deals from Maine to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Maine to San Francisco?

    Currently, March is the cheapest month in which you can book a flight from Maine to San Francisco (average of $154). Flying from Maine to San Francisco in June is currently the most expensive (average of $303). 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Santa Clara
Fairfield
Rancho Cordova
Cupertino
Emeryville
Newark
Watsonville
San Bruno
San Ramon
Vacaville
Roseville
San Carlos
Redwood City
Daly City
Turlock
Sunnyvale
Vallejo
San Lorenzo

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 for Maine to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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John F Kennedy Intl to San Francisco flights
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Seattle to San Diego flights
Los Angeles to San Francisco flights
Boston to Las Vegas flights
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Dallas/Fort Worth to Ontario flights
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Baltimore to Las Vegas flights
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Denver to Las Vegas flights

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 June 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$251Average$482FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$553FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$272Average$541FlexibilityNo cancel feeOn-time63%
DeltaCheapest$276Average$473FlexibilityNo cancel feeOn-timeN/A

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