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San Francisco Bay Area

$139+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$251
(American Airlines)

One-way from

$139
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$386
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. 2% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/12. 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 9/69:18 amPWM - SFO
1 stop8h 51mAmerican Airlines
Sat 9/1311:52 pmSFO - PWM
1 stop11h 01mAmerican Airlines
Deal found 6/12$251
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/112:55 pmPWM - SFO
1 stop8h 52mDelta
Mon 7/712:50 amSFO - PWM
1 stop6h 45mDelta
Deal found 6/10$277
This JetBlue deal was found by Cheapflights users on 6/10. 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 9/57:30 amPWM - SFO
1 stop12h 24mJetBlue
Mon 9/88:00 amSFO - PWM
1 stop11h 02mJetBlue
Deal found 6/10$293
This Southwest deal was found by Cheapflights users on 6/10. 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 7/15:30 amPWM - SFO
1 stop15h 20mSouthwest
Mon 7/79:00 pmSFO - PWM
1 stop9h 45mSouthwest
Deal found 6/10$307
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/86:01 amPWM - SFO
1 stop8h 28mUnited Airlines
Fri 7/1111:40 amSFO - PWM
1 stop8h 34mUnited Airlines
Deal found 6/11$365
This Delta deal was found by Cheapflights users on 6/10. 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 11/45:40 amPWM - SJC
1 stop9h 14mDelta
Thu 11/67:00 amSJC - PWM
2 stops14h 04mDelta
Deal found 6/10$393
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:45 amPWM - SJC
1 stop10h 05mSouthwest
Fri 9/128:55 pmSJC - PWM
1 stop10h 20mSouthwest
Deal found 6/10$399
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/222:00 pmPWM - OAK
2 stops11h 35mSouthwest
Thu 9/257:10 pmOAK - PWM
2 stops11h 40mSouthwest
Deal found 6/12$405
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/43:20 pmPWM - SJC
1 stop8h 33mUnited Airlines
Thu 11/66:40 pmSJC - PWM
2 stops12h 24mUnited Airlines
Deal found 6/10$439
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/412:34 pmPWM - OAK
2 stops22h 54mMultiple Airlines
Thu 8/75:27 pmOAK - PWM
1 stop15h 30mMultiple Airlines
Deal found 6/10$462
This Sun Country Air deal was found by Cheapflights users on 6/11. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1412:46 pmPWM - SFO
1 stop25h 19mSun Country Air
Sat 7/196:14 pmSFO - PWM
1 stop14h 31mSun Country Air
Deal found 6/11$485
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/258:07 pmPWM - SJC
3 stops40h 59mMultiple Airlines
Sun 6/296:00 amSJC - PWM
2 stops26h 23mMultiple Airlines
Deal found 6/9$536

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 June 12, 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 9/6

9:18 am-3:09 pm

1 stop8h 51m

San Francisco

Sat 9/13

11:52 pm-1:53 pm

1 stop11h 01m

$251

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Tue 7/1

12:55 pm-6:47 pm

1 stop8h 52m

San Francisco

Mon 7/7

12:50 am-10:35 am

1 stop6h 45m

$277

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 9/5

7:30 am-4:54 pm

1 stop12h 24m

San Francisco

Mon 9/8

8:00 am-10:02 pm

1 stop11h 02m

$293

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Tue 7/1

5:30 am-5:50 pm

1 stop15h 20m

San Francisco

Mon 7/7

9:00 pm-9:45 am

1 stop9h 45m

$307

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Tue 7/8

6:01 am-11:29 am

1 stop8h 28m

San Francisco

Fri 7/11

11:40 am-11:14 pm

1 stop8h 34m

$365

PortlandSan Jose

PWM - SJC

PWMSJC

Portland

Tue 11/4

5:40 am-11:54 am

1 stop9h 14m

San Jose

Thu 11/6

7:00 am-12:04 am

2 stops14h 04m

$393

PortlandSan Jose

PWM - SJC

PWMSJC

Portland

Mon 9/8

8:45 am-3:50 pm

1 stop10h 05m

San Jose

Fri 9/12

8:55 pm-10:15 am

1 stop10h 20m

$399

PortlandOakland

PWM - OAK

PWMOAK

Portland

Mon 9/22

2:00 pm-10:35 pm

2 stops11h 35m

Oakland

Thu 9/25

7:10 pm-9:50 am

2 stops11h 40m

$405

PortlandSan Jose

PWM - SJC

PWMSJC

Portland

Tue 11/4

3:20 pm-8:53 pm

1 stop8h 33m

San Jose

Thu 11/6

6:40 pm-10:04 am

2 stops12h 24m

$439

PortlandOakland

PWM - OAK

PWMOAK

Portland

Mon 8/4

12:34 pm-8:28 am

2 stops22h 54m

Oakland

Thu 8/7

5:27 pm-11:57 am

1 stop15h 30m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 33 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 $364). 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 June 12, 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.

Rainfall in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 in.

Temperature in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Get a feel of what it's like to fly with Breeze Airways, Southwest and Delta from Portland to San Francisco Bay Area by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,950 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
United Airlines
7.4
Good
8,790 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
JetBlue
7.3
Good
2,925 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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.

  • What are the cheapest airlines to fly from Portland, Maine to San Francisco Bay Area one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from Delta and JetBlue, 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 $364). 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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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$216Average$397FlexibilityNo cancel feeOn-time71%
DeltaCheapest$253Average$449FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$276Average$489FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$320Average$535FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$366Average$438FlexibilityNo cancel feeOn-time63%

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