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San Francisco Bay Area

$126+ Cheap flights from Portland, ME (PWM) to San Francisco Bay Area

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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Portland to San Francisco Bay Area

Keep the following information in mind while searching for Portland to San Francisco Bay Area flight deals. Data was last updated September 16, 2025.

Round-trip from

$239
(American Airlines)

One-way from

$126
(American Airlines)

Popular in

November

Cheapest in

September

Average price

$350
From Portland to San Francisco Bay Area
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One-way flight from Portland to San Francisco Bay Area
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Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Portland to San Francisco Bay Area

Cheapest flights from Portland to San Francisco Bay Area
Explore the most affordable flight options available from Portland to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:14 pmPWM - SFO
1 stop8h 54mAmerican Airlines
Sat 11/88:45 amSFO - PWM
1 stop10h 47mAmerican Airlines
Deal found 9/14$239
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/312:40 pmPWM - SFO
1 stop8h 10mSouthwest
Sat 11/86:25 amSFO - PWM
2 stops12h 30mSouthwest
Deal found 9/14$244
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 11/53:52 pmPWM - SFO
1 stop9h 13mAmerican Airlines
Tue 11/119:00 amSFO - PWM
1 stop9h 35mAmerican Airlines
Deal found 9/14$251
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:45 pmPWM - SFO
2 stops12h 45mSouthwest
Wed 11/198:20 amSFO - PWM
2 stops10h 55mSouthwest
Deal found 9/15$261
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/87:25 pmPWM - SFO
1 stop8h 30mUnited Airlines
Sun 10/125:15 amSFO - PWM
1 stop9h 27mUnited Airlines
Deal found 9/15$269
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 11/11:27 pmPWM - SFO
1 stop12h 03mDelta
Sat 11/85:55 amSFO - PWM
1 stop7h 08mDelta
Deal found 9/14$277
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:25 pmPWM - SFO
1 stop8h 30mUnited Airlines
Wed 10/221:02 pmSFO - PWM
1 stop7h 57mUnited Airlines
Deal found 9/15$280
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” 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 10/294:48 pmPWM - SFO
1 stop8h 47mDelta
Sun 11/25:55 amSFO - PWM
1 stop7h 08mDelta
Deal found 9/15$282
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/77:40 amPWM - SJC
1 stop13h 25mSouthwest
Tue 10/147:55 amSJC - PWM
2 stops11h 35mSouthwest
Deal found 9/16$484
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/76:00 amPWM - SJC
2 stops15h 14mUnited Airlines
Tue 10/146:30 amSJC - PWM
2 stops14h 29mUnited Airlines
Deal found 9/16$501
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:18 amPWM - SJC
1 stop10h 23mAmerican Airlines
Sun 10/56:00 amSJC - PWM
1 stop9h 31mAmerican Airlines
Deal found 9/14$527
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” 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 10/26:00 amPWM - SJC
1 stop8h 17mDelta
Sun 10/56:55 pmSJC - PWM
2 stops12h 41mDelta
Deal found 9/14$532

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to San Francisco Bay Area 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 September 16, 2025.
Use the filters below to find and compare flights from Portland to San Francisco Bay Area that are best for you.

Fly from

Portland

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Sat 11/22

3:05 pm-11:25 pm

1 stop11h 20m

San Francisco

Thu 11/27

9:25 pm-11:10 am

1 stop10h 45m

$244

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/31

5:25 am-12:10 pm

2 stops9h 45m

San Francisco

Sat 11/8

6:25 am-9:55 pm

2 stops12h 30m

$249

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/12

6:00 am-12:08 pm

1 stop9h 08m

San Francisco

Wed 11/19

5:00 am-3:48 pm

1 stop7h 48m

$251

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/12

5:30 am-1:20 pm

1 stop10h 50m

San Francisco

Wed 11/19

8:20 am-10:15 pm

2 stops10h 55m

$256

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 10/22

10:40 am-7:00 pm

1 stop11h 20m

San Francisco

Sun 10/26

9:20 pm-10:04 am

1 stop9h 44m

$269

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Sat 11/1

1:27 pm-10:30 pm

1 stop12h 03m

San Francisco

Sat 11/8

5:55 am-4:03 pm

1 stop7h 08m

$277

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/12

1:25 pm-8:56 pm

1 stop10h 31m

San Francisco

Tue 11/18

12:45 am-4:07 pm

2 stops12h 22m

$282

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 10/29

1:27 pm-9:06 pm

1 stop10h 39m

San Francisco

Sun 11/2

5:55 am-4:03 pm

1 stop7h 08m

$282

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 12/4

4:53 pm-10:18 pm

1 stop8h 25m

San Francisco

Sun 12/7

6:00 am-4:06 pm

1 stop7h 06m

$287

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/5

1:46 pm-11:56 pm

2 stops13h 10m

San Francisco

Tue 11/11

9:30 pm-12:08 pm

2 stops11h 38m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 30 results
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Best time to book a flight from Portland to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Portland 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 Portland to San Francisco Bay Area

What is the cheapest month to book a flight from Portland, Maine to San Francisco Bay Area?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to San Francisco Bay Area (average of $276). Flying from Portland, Maine to San Francisco Bay Area in June is currently the most expensive (average of $357). 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 PWM to XIH?

Find hourly flight availability from Portland to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Portland, Maine to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco Bay Area. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Portland to San Francisco Bay Area to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
JetBlue
7.2
Good
2,914 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Portland to San Francisco Bay Area. 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 from for flights from Portland to San Francisco Bay Area?

    Most people fly from Portland (PWM) if they book a flight from Portland to San Francisco Bay Area. Portland is conveniently located just 2.9 mi from Portland’s city center.

  • How long is the flight from Portland, Maine to San Francisco Bay Area?

    There are many flights that can get you from Portland, Maine to San Francisco Bay Area in 9h 08m. Fly via Southwest, United Airlines, or Delta to get the fastest option. 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 cheapest airlines to fly from Portland, Maine to San Francisco Bay Area one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Portland, Maine to San Francisco Bay Area for a low price.

  • What are the most popular routes from Portland, Maine to San Francisco Bay Area?

    The most popular route from Portland, Maine to San Francisco Bay Area is Portland - San Francisco. You may also consider Portland - San Jose or Portland - Oakland.

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

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

  • How can I find direct flights from Portland to San Francisco Bay Area?

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

  • Can I find deals for business class flights from Portland to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from Portland to San Francisco Bay Area 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 Portland, Maine to San Francisco Bay Area?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to San Francisco Bay Area (average of $276). Flying from Portland, Maine to San Francisco Bay Area in June is currently the most expensive (average of $357). 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

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Alternative routes for Portland to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Portland to San Francisco Bay Area

Discover the top 5 airlines that operate flights from Portland to San Francisco Bay Area. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$232Average$423FlexibilityNo cancel feeOn-time71%
DeltaCheapest$253Average$424FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$272Average$438FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$276Average$491FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$320Average$490FlexibilityNo cancel feeOn-time62%

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