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$144+ Cheap flights from San Francisco to Portland, ME (SFO - PWM)

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — PWM
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from San Francisco to Portland

Cheapest flights from San Francisco to Portland
Explore the most affordable flight options available from San Francisco to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 2/2511:35 am
SFO
-
PWM
1 stop8h 45m
United Airlines
Wed 3/46:00 am
PWM
-
SFO
1 stop9h 15m
United Airlines
Deal found 1/25$251
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/259:25 am
SFO
-
PWM
2 stops11h 25m
American Airlines
Tue 3/35:40 pm
PWM
-
SFO
1 stop9h 07m
American Airlines
Deal found 1/25$256
This Delta deal was found by Cheapflights users on 1/27. 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 2/2410:45 pm
SFO
-
PWM
1 stop10h 15m
Delta
Sat 2/2812:45 pm
PWM
-
SFO
1 stop8h 51m
Delta
Deal found 1/27$257
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/2411:30 pm
SFO
-
PWM
2 stops9h 29m
American Airlines
Tue 3/35:40 pm
PWM
-
SFO
1 stop9h 07m
American Airlines
Deal found 1/25$259
This Delta deal was found by Cheapflights users on 1/27. 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 2/2410:45 pm
SFO
-
PWM
1 stop10h 15m
Delta
Wed 3/412:43 pm
PWM
-
SFO
2 stops14h 06m
Delta
Deal found 1/27$262
This Delta deal was found by Cheapflights users on 1/27. 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 2/2410:45 pm
SFO
-
PWM
2 stops9h 33m
Delta
Tue 3/32:35 pm
PWM
-
SFO
2 stops11h 50m
Delta
Deal found 1/27$268
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/176:00 am
SFO
-
PWM
1 stop8h 07m
American Airlines
Mon 2/235:40 pm
PWM
-
SFO
1 stop9h 07m
American Airlines
Deal found 1/25$269
This American Airlines deal was found by Cheapflights users on 1/26. 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 2/176:21 am
SFO
-
PWM
1 stop8h 50m
American Airlines
Thu 2/195:40 pm
PWM
-
SFO
1 stop9h 07m
American Airlines
Deal found 1/26$273
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 2/237:00 pm
SFO
-
PWM
2 stops12h 25m
American Airlines
Tue 3/35:40 pm
PWM
-
SFO
1 stop9h 07m
American Airlines
Deal found 1/25$274
This Delta deal was found by Cheapflights users on 1/27. 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.
Mon 2/239:30 pm
SFO
-
PWM
2 stops10h 48m
Delta
Sat 2/2812:45 pm
PWM
-
SFO
1 stop8h 51m
Delta
Deal found 1/27$277
This Delta deal was found by Cheapflights users on 1/27. 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.
Mon 2/239:30 pm
SFO
-
PWM
2 stops10h 48m
Delta
Wed 3/412:43 pm
PWM
-
SFO
2 stops14h 06m
Delta
Deal found 1/27$283
This American Airlines deal was found by Cheapflights users on 1/26. 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 4/2211:50 am
SFO
-
PWM
1 stop8h 20m
American Airlines
Tue 4/281:18 pm
PWM
-
SFO
1 stop10h 46m
American Airlines
Deal found 1/26$287

Find flight deals from San Francisco to Portland

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(United Airlines)

One-way from

$144
(Delta)

Popular in

December

Cheapest in

January

Average price

$331
Provider with most accurate pricing for San Francisco-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Portland flights.
Search Deals
From San Francisco to Portland
Search Deals
One-way flight from San Francisco to Portland
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Portland 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 January 27, 2026.
Use the filters below to find and compare flights from San Francisco to Portland that are best for you.

Fly from

San Francisco

Fly to

Portland

Route

Depart

Return

Price

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 2/25

11:35 am-11:20 pm

1 stop8h 45m

Portland

Wed 3/4

6:00 am-12:15 pm

1 stop9h 15m

$251

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 2/24

10:45 pm-12:00 pm

1 stop10h 15m

Portland

Wed 3/4

12:43 pm-11:49 pm

2 stops14h 06m

$262

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 2/24

10:45 pm-11:18 am

2 stops9h 33m

Portland

Tue 3/3

2:35 pm-11:25 pm

2 stops11h 50m

$268

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Mon 2/23

9:30 pm-11:18 am

2 stops10h 48m

Portland

Tue 3/3

2:35 pm-11:49 pm

2 stops12h 14m

$283

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 4/15

9:08 am-10:46 pm

1 stop10h 38m

Portland

Tue 4/21

5:45 pm-11:54 pm

1 stop9h 09m

$287

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Mon 5/4

9:30 pm-10:18 am

1 stop9h 48m

Portland

Sat 5/9

7:10 pm-1:16 am

1 stop9h 06m

$287

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 5/26

6:00 am-4:15 pm

1 stop7h 15m

Portland

Tue 8/25

6:00 am-1:25 pm

1 stop10h 25m

$287

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 3/17

10:40 pm-11:04 am

2 stops9h 24m

Portland

Tue 3/24

4:48 pm-10:36 pm

1 stop8h 48m

$292

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Thu 2/26

10:20 am-12:18 am

2 stops10h 58m

Portland

Sat 2/28

12:45 pm-6:36 pm

1 stop8h 51m

$294

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 2/25

10:20 am-12:18 am

2 stops10h 58m

Portland

Wed 3/4

12:43 pm-11:49 pm

2 stops14h 06m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from San Francisco to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Portland in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to Portland

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

How far ahead should I book a flight from San Francisco to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Portland. Price data was last updated on January 23, 2026.

The price you pay for your flight from San Francisco to Portland, Maine may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, December is the cheapest month in which you can book a flight from San Francisco to Portland, Maine (average of $118). Flying from San Francisco to Portland, Maine in June is currently the most expensive (average of $208). 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.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated January 27, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines from San Francisco to Portland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,119 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,205 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,197 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
JetBlue
7.2
Good
2,890 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as $251, United Airlines can have you in Portland, Maine from San Francisco in 8h 45m. San Francisco and Portland, Maine are separated by a distance of 2715 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Francisco to Portland, Maine round-trip?

    Delta, at $155, was found to be the cheapest airline from San Francisco to Portland, Maine.Alternate airlines to your destination round-trip include JetBlue and Southwest. Delta is priced at 69% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $108. American Airlines flights start at $138 while deals on Delta start at $138 one-way.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from San Francisco to Portland, Maine (average of $118). Flying from San Francisco to Portland, Maine in June is currently the most expensive (average of $208). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Conway

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Top 5 airlines flying from San Francisco to Portland

Discover the top 5 airlines that operate flights from San Francisco to Portland. 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$155Average$365FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$190Average$409FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$190Average$436FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$246Average$413FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$310Average$556FlexibilityNo cancel feeOn-time69%

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