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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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
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 octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$257
(Delta)

One-way from

$126
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$415
Provider with most accurate pricing for Portland-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Portland-San Francisco flights.
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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. 5% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 30, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/181:25 pmPWM - SFO
1 stop10h 31mDelta
vie. 12/510:45 pmSFO - PWM
1 stop10h 28mDelta
Deal found 10/28$257
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/184:53 pmPWM - SFO
1 stop9h 18mDelta
sáb. 12/65:50 amSFO - PWM
2 stops12h 01mDelta
Deal found 10/28$262
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/186:00 amPWM - SFO
2 stops11h 15mDelta
jue. 12/49:30 pmSFO - PWM
2 stops15h 37mDelta
Deal found 10/28$267
This United Airlines deal was found by Cheapflights users on 10/29. 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.
mié. 11/192:20 pmPWM - SFO
1 stop11h 15mUnited Airlines
jue. 11/279:35 pmSFO - PWM
1 stop8h 44mUnited Airlines
Deal found 10/29$269
This United Airlines deal was found by Cheapflights users on 10/29. 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.
mié. 11/123:20 pmPWM - SFO
1 stop10h 35mUnited Airlines
mié. 11/195:00 amSFO - PWM
1 stop7h 38mUnited Airlines
Deal found 10/29$277
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/121:25 pmPWM - SFO
1 stop10h 31mDelta
vie. 12/510:45 pmSFO - PWM
1 stop10h 28mDelta
Deal found 10/28$280
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1212:26 pmPWM - SFO
2 stops11h 08mAmerican Airlines
mié. 11/196:30 amSFO - PWM
1 stop8h 40mAmerican Airlines
Deal found 10/29$282
This Delta deal was found by Cheapflights users on 10/29. 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.
mié. 11/121:25 pmPWM - SFO
1 stop10h 31mDelta
mar. 11/1812:30 amSFO - PWM
2 stops12h 30mDelta
Deal found 10/29$285
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/144:53 pmPWM - SFO
2 stops10h 26mDelta
mié. 12/38:25 amSFO - PWM
2 stops10h 58mDelta
Deal found 10/28$290
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/184:53 pmPWM - SFO
1 stop9h 18mDelta
dom. 12/710:45 pmSFO - PWM
1 stop10h 28mDelta
Deal found 10/28$298
This United Airlines deal was found by Cheapflights users on 10/29. 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.
mié. 11/193:20 pmPWM - SFO
1 stop10h 35mUnited Airlines
vie. 11/285:00 amSFO - PWM
1 stop7h 48mUnited Airlines
Deal found 10/29$300
This Southwest deal was found by Cheapflights users on 10/29. 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.
dom. 12/213:15 pmPWM - OAK
2 stops12h 05mSouthwest
lun. 12/297:50 pmOAK - PWM
2 stops12h 20mSouthwest
Deal found 10/29$489

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 octubre 30, 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

dom. 2/1

12:46 pm-10:34 pm

2 stops12h 48m

San Francisco

sáb. 2/7

6:00 am-9:37 pm

2 stops12h 37m

$264

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

vie. 12/5

6:08 am-5:58 pm

2 stops14h 50m

San Francisco

lun. 12/8

5:50 am-10:23 pm

2 stops13h 33m

$267

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

mar. 11/18

6:00 am-2:15 pm

2 stops11h 15m

San Francisco

jue. 12/4

9:30 pm-4:07 pm

2 stops15h 37m

$267

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

sáb. 11/15

6:00 am-12:23 pm

1 stop9h 23m

San Francisco

vie. 12/5

5:50 am-4:07 pm

1 stop7h 17m

$280

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

vie. 11/14

4:53 pm-11:11 pm

1 stop9h 18m

San Francisco

vie. 12/5

5:50 am-4:07 pm

1 stop7h 17m

$280

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

mié. 11/12

4:53 pm-11:10 pm

1 stop9h 17m

San Francisco

jue. 12/4

5:50 am-4:07 pm

1 stop7h 17m

$280

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

mié. 11/12

1:25 pm-8:56 pm

1 stop10h 31m

San Francisco

vie. 12/5

10:45 pm-12:13 pm

1 stop10h 28m

$280

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

jue. 11/13

12:48 pm-6:01 pm

1 stop8h 13m

San Francisco

mié. 12/3

8:25 am-10:23 pm

2 stops10h 58m

$285

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

vie. 11/14

4:53 pm-11:11 pm

1 stop9h 18m

San Francisco

vie. 12/5

12:30 am-4:00 pm

2 stops12h 30m

$285

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

vie. 11/14

4:53 pm-11:11 pm

1 stop9h 18m

San Francisco

lun. 12/8

5:50 am-10:23 pm

2 stops13h 33m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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, March is the cheapest month in which you can book a flight from Portland, Maine to San Francisco Bay Area (average of $98). Flying from Portland, Maine to San Francisco Bay Area in October is currently the most expensive (average of $178). 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 octubre 30, 2025.

One of the essential ways to save on airfare from Portland, Maine to San Francisco Bay Area is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 55% on airfare.

What is the cheapest day to fly from Portland, Maine to San Francisco Bay Area?

Use this chart to determine the cheapest time to fly round-trip from Portland to San Francisco Bay Area. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland, Maine to San Francisco Bay Area flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 octubre 30, 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
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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
2,906 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Entertainment

7.5

Crew

8.6

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 12h 05m. Fly via American Airlines, Delta, or Southwest to get the fastest option. Airlines will cover a distance of 2704 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 Southwest, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from United Airlines and American 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 - Oakland or Portland - San Jose.

  • 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, March is the cheapest month in which you can book a flight from Portland, Maine to San Francisco Bay Area (average of $98). Flying from Portland, Maine to San Francisco Bay Area in October is currently the most expensive (average of $178). 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.

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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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$235Average$436FlexibilityNo cancel feeOn-time71%
DeltaCheapest$253Average$427FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$272Average$464FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$276Average$494FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$320Average$495FlexibilityNo cancel feeOn-time62%

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