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Cheap flights from San Francisco to Portland from $146

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Portland departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:15 pm - 9:25 am
SFO
-
PWM
9h 10m
1 stop
United Airlines Logo
5:30 am - 11:20 am
PWM
-
SFO
8h 50m
1 stop
$291United Airlines
Tue, Apr 28 - Tue, May 5
American Airlines Logo
12:31 pm - 11:27 pm
SFO
-
PWM
7h 56m
1 stop
American Airlines Logo
6:00 am - 3:25 pm
PWM
-
SFO
12h 25m
2 stops
$296American Airlines
Tue, Apr 21 - Wed, Apr 29
American Airlines Logo
9:00 am - 11:27 pm
SFO
-
PWM
11h 27m
2 stops
American Airlines Logo
6:00 am - 3:25 pm
PWM
-
SFO
12h 25m
2 stops
$301American Airlines
Tue, Apr 21 - Wed, Apr 29
American Airlines Logo
5:45 am - 6:58 pm
SFO
-
PWM
10h 13m
1 stop
American Airlines Logo
6:00 am - 3:25 pm
PWM
-
SFO
12h 25m
2 stops
$306American Airlines
Mon, Apr 20 - Wed, Apr 29
American Airlines Logo
12:31 pm - 11:27 pm
SFO
-
PWM
7h 56m
1 stop
American Airlines Logo
6:01 pm - 11:59 pm
PWM
-
SFO
8h 58m
1 stop
$311American Airlines
Tue, Apr 21 - Wed, Apr 29
American Airlines Logo
9:00 am - 11:27 pm
SFO
-
PWM
11h 27m
2 stops
American Airlines Logo
6:01 pm - 11:59 pm
PWM
-
SFO
8h 58m
1 stop
$316American Airlines
Tue, Apr 21 - Wed, Apr 29
American Airlines Logo
5:45 am - 6:58 pm
SFO
-
PWM
10h 13m
1 stop
American Airlines Logo
6:01 pm - 11:59 pm
PWM
-
SFO
8h 58m
1 stop
$321American Airlines
Mon, Apr 20 - Wed, Apr 29
Delta Logo
5:50 am - 3:57 pm
SFO
-
PWM
7h 07m
1 stop
Delta Logo
1:12 pm - 7:09 pm
PWM
-
SFO
8h 57m
1 stop
$325Delta
Tue, Apr 21 - Sat, Apr 25
Southwest Logo
10:55 pm - 11:55 am
SFO
-
PWM
10h 00m
2 stops
Southwest Logo
4:50 pm - 11:20 pm
PWM
-
SFO
9h 30m
1 stop
$328Southwest
Fri, Apr 17 - Mon, Apr 27
Southwest Logo
10:00 am - 11:10 pm
SFO
-
PWM
10h 10m
2 stops
Southwest Logo
5:40 am - 2:25 pm
PWM
-
SFO
11h 45m
1 stop
$335Southwest
Sat, May 9 - Sat, May 16

Delta flights from San Francisco to Portland, Maine

Our best Delta deals on San Francisco to Portland, Maine flight tickets
Delta
Apr 21
SFO5:50 amSan Francisco
7h 07m
1 stop
PWM3:57 pmPortland
Apr 25
PWM1:12 pmPortland
8h 57m
1 stop
SFO7:09 pmSan Francisco
$325
Delta
Apr 20
SFO4:00 pmSan Francisco
19h 11m
1 stop
PWM2:11 pmPortland
Apr 25
PWM1:12 pmPortland
10h 12m
1 stop
SFO8:24 pmSan Francisco
$348
Delta
Apr 17
SFO10:55 pmSan Francisco
10h 09m
1 stop
PWM12:04 pmPortland
Apr 25
PWM1:12 pmPortland
10h 12m
1 stop
SFO8:24 pmSan Francisco
$360

Southwest flights from San Francisco to Portland, Maine

Our best Southwest deals on San Francisco to Portland, Maine flight tickets
Southwest
Apr 17
SFO10:55 pmSan Francisco
10h 00m
2 stops
PWM11:55 amPortland
Apr 27
PWM4:50 pmPortland
9h 30m
1 stop
SFO11:20 pmSan Francisco
$328
Southwest
May 9
SFO10:00 amSan Francisco
10h 10m
2 stops
PWM11:10 pmPortland
May 16
PWM5:40 amPortland
11h 45m
1 stop
SFO2:25 pmSan Francisco
$335
Southwest
May 5
SFO7:40 amSan Francisco
11h 55m
2 stops
PWM10:35 pmPortland
May 12
PWM1:00 pmPortland
12h 05m
2 stops
SFO10:05 pmSan Francisco
$376

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Portland, Maine 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, momondo users made 832,500 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from San Francisco to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 4/28

9:15 pm-9:25 am

1 stop9h 10m

Portland

Tue 5/5

5:30 am-11:20 am

1 stop8h 50m

$291

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 4/21

12:31 pm-11:27 pm

1 stop7h 56m

Portland

Wed 4/29

6:00 am-3:25 pm

2 stops12h 25m

$296

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 4/21

9:00 am-11:27 pm

2 stops11h 27m

Portland

Wed 4/29

6:00 am-3:25 pm

2 stops12h 25m

$301

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Mon 4/20

5:45 am-6:58 pm

1 stop10h 13m

Portland

Wed 4/29

6:00 am-3:25 pm

2 stops12h 25m

$306

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 4/21

12:31 pm-11:27 pm

1 stop7h 56m

Portland

Wed 4/29

6:01 pm-11:59 pm

1 stop8h 58m

$311

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 4/21

9:00 am-11:27 pm

2 stops11h 27m

Portland

Wed 4/29

6:01 pm-11:59 pm

1 stop8h 58m

$316

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Mon 4/20

5:45 am-6:58 pm

1 stop10h 13m

Portland

Wed 4/29

6:01 pm-11:59 pm

1 stop8h 58m

$321
Quickest round-trip

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 4/21

5:50 am-3:57 pm

1 stop7h 07m

Portland

Sat 4/25

1:12 pm-7:09 pm

1 stop8h 57m

$325

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Fri 4/17

10:55 pm-11:55 am

2 stops10h 00m

Portland

Mon 4/27

4:50 pm-11:20 pm

1 stop9h 30m

$328

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Sat 5/9

10:00 am-11:10 pm

2 stops10h 10m

Portland

Sat 5/16

5:40 am-2:25 pm

1 stop11h 45m

$335

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from San Francisco to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between San Francisco and Portland, Maine?

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from San Francisco is in January. Flight prices, which tend to average around $334, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $363.

What is the cheapest San Francisco to Portland flight route?

Fly from San Francisco to Portland for the best San Francisco - Portland flight prices

How far in advance should I book a flight to Portland, Maine?

You are more likely to see cheaper flights to Portland, Maine from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $495 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from San Francisco for as low as $343 on momondo.

What cabin class options are available on San Francisco to Portland flights?

There are 2 cabin classes available to choose from on San Francisco to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Francisco to Portland, Maine flight prices changed over time?

As of April 2026, prices for San Francisco to Portland, Maine flights are approximately 49% cheaper when compared to flights at the same time last year.

When to book flights from San Francisco to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Portland, Maine (SFO to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Portland, Maine

Fastest flight time

5h 47m

Direct flights

Sun

Airports in Portland, Maine

1 airport
The fastest flight from San Francisco to Portland, Maine takes 5h 47m
Direct flights go from San Francisco to Portland, Maine on Sunday. The only airline offering direct flights is United Airlines.
There is 1 airport in Portland, Maine. From San Francisco there are direct flights to Portland (PWM).
Search flight deals

  • How far is San Francisco to Portland by plane?

    The distance between San Francisco and Portland is about 2713.5 mi. By plane, this route typically takes 5h 47m.

  • When did momondo last update prices for flights from San Francisco Airport to Portland Airport?

    Prices for flights from San Francisco Airport to Portland Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Francisco Airport to Portland Airport?

  • How old do you have to be to fly from San Francisco Airport to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from San Francisco to Portland, Maine?

  • What is the most popular airline from San Francisco to Portland, Maine?

Best airlines flying from San Francisco to Portland, Maine

Compare and see reviews for airlines that fly from San Francisco to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $155Free CancellationRating
7.9
8,367 reviews
Search Delta flights
JetBluePriceFrom $190Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
SouthwestPriceFrom $190Free CancellationRating
8.0
4,334 reviews
Search Southwest flights
American AirlinesPriceFrom $246Free CancellationRating
7.1
11,545 reviews
Search American Airlines flights
United AirlinesPriceFrom $293Free CancellationRating
7.4
9,529 reviews
Search United Airlines flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Bath
Oxford
Georgetown
Falmouth
Tamworth

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Portland?

It is quick and easy to find San Francisco to Portland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portland that suits you.

Can I find flights from San Francisco to Portland with flexible booking policies on momondo?

Flights from San Francisco to Portland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Francisco to Portland?

Once you have performed a search for San Francisco to Portland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from San Francisco to Portland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Francisco to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

An easier way to manage your Portland, Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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