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$90+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — PWM
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Portland are usually found in January or September, booked 89 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap 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 September 11, 2025.

Round-trip from

$254
(American Airlines)

One-way from

$90
(Southwest)

Popular in

March

Cheapest in

January

Average price

$359
From San Francisco to Portland
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One-way flight from San Francisco to Portland
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Highest demand for flights based on searches. 23% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 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 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/711:25 pmSFO - PWM
2 stops10h 10mAmerican Airlines
Wed 10/156:00 amPWM - SFO
1 stop8h 12mAmerican Airlines
Deal found 9/9$254
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:00 amSFO - PWM
2 stops12h 32mAmerican Airlines
Tue 11/116:00 amPWM - SFO
2 stops13h 01mAmerican Airlines
Deal found 9/9$261
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 10/55:15 amSFO - PWM
1 stop9h 27mUnited Airlines
Sat 11/156:00 amPWM - SFO
1 stop9h 08mUnited Airlines
Deal found 9/10$263
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:00 amSFO - PWM
1 stop8h 14mAmerican Airlines
Sat 11/155:43 amPWM - SFO
2 stops12h 20mAmerican Airlines
Deal found 9/11$268
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:02 pmSFO - PWM
1 stop7h 57mUnited Airlines
Fri 10/36:00 amPWM - SFO
1 stop8h 20mUnited Airlines
Deal found 9/9$269
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:00 amSFO - PWM
2 stops11h 11mAmerican Airlines
Fri 10/33:56 pmPWM - SFO
1 stop8h 50mAmerican Airlines
Deal found 9/9$274
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/11:02 pmSFO - PWM
1 stop7h 57mUnited Airlines
Tue 10/76:14 amPWM - SFO
1 stop10h 21mUnited Airlines
Deal found 9/10$276
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/412:45 amSFO - PWM
1 stop6h 55mDelta
Sat 11/156:00 amPWM - SFO
1 stop11h 42mDelta
Deal found 9/11$277
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/79:25 pmSFO - PWM
1 stop14h 15mSouthwest
Tue 11/115:30 amPWM - SFO
1 stop10h 50mSouthwest
Deal found 9/9$280
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2812:45 amSFO - PWM
1 stop6h 55mDelta
Fri 10/31:35 pmPWM - SFO
1 stop9h 53mDelta
Deal found 9/9$287

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 September 11, 2025.
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

Sat 10/4

12:45 am-10:40 am

1 stop6h 55m

Portland

Sat 11/15

6:00 am-12:20 pm

1 stop9h 20m

$277

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Fri 11/7

9:25 pm-2:40 pm

1 stop14h 15m

Portland

Tue 11/11

5:30 am-1:20 pm

1 stop10h 50m

$280

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Fri 11/7

12:35 am-1:58 pm

2 stops10h 23m

Portland

Tue 11/11

4:53 pm-10:12 pm

1 stop8h 19m

$282

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 10/14

6:10 am-12:05 am

2 stops14h 55m

Portland

Tue 10/21

1:27 pm-10:34 pm

1 stop12h 07m

$282

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Sun 9/28

12:45 am-10:40 am

1 stop6h 55m

Portland

Fri 10/3

1:35 pm-8:28 pm

1 stop9h 53m

$287

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Thu 10/30

9:05 pm-9:40 am

1 stop9h 35m

Portland

Tue 11/4

5:30 am-1:20 pm

1 stop10h 50m

$294

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 10/8

6:30 am-7:41 pm

1 stop10h 11m

Portland

Wed 10/15

7:25 pm-12:55 am

1 stop8h 30m

$328

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Sat 10/4

9:00 pm-9:11 am

1 stop9h 11m

Portland

Sat 10/11

6:00 am-11:20 am

1 stop8h 20m

$333

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 10/21

9:05 pm-11:15 am

1 stop11h 10m

$90

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 12/10

9:00 am-9:37 pm

1 stop9h 37m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
1
2

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 August 29, 2025.

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, January is the cheapest month in which you can book a flight from San Francisco to Portland, Maine (average of $296). Flying from San Francisco to Portland, Maine in July is currently the most expensive (average of $394). 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 SFO to PWM?

Find hourly flight availability from San Francisco to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s optimal to fly from San Francisco to Portland, Maine in the afternoon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.

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 September 11, 2025.
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
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

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
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

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
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

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
2,913 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

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 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 $277, Delta can have you in Portland, Maine from San Francisco in 6h 55m. 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?

    JetBlue, at $190, was found to be the cheapest airline from San Francisco to Portland, Maine.Alternate airlines to your destination round-trip include Southwest and American Airlines. JetBlue is priced at 60% lower than the current average price of a flight leaving 3 months from now.

  • 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, January is the cheapest month in which you can book a flight from San Francisco to Portland, Maine (average of $296). Flying from San Francisco to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$190Average$387FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$190Average$466FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$238Average$425FlexibilityNo cancel feeOn-time71%
DeltaCheapest$263Average$351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$316Average$571FlexibilityNo cancel feeOn-time69%

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