Which airport is the most popular layover for flights between Portland, Maine and San Francisco?

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Portland, Maine to San Francisco?

Flights connecting via Newark (EWR) have the shortest average one-way travel time: 8h 33m.

What airlines fly to San Francisco?

JetBlue, United Airlines and Delta are the top three most popular airlines that fly to San Francisco from Portland, Maine according to our data. JetBlue is the first choice among our users, with 44% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 9 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Portland to San Francisco?

Southwest, Delta, and United Airlines are the most popular carriers operating from Portland to San Francisco

Which layover airport has the shortest connection time from Portland, Maine to San Francisco?

Chicago (ORD) has the shortest average layover time for this route: 1h 02m.

Which layover airport offers the lowest fares from Portland, Maine to San Francisco?

Flights via Chicago (ORD) offer the lowest average round-trip price of $285.

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

Prices for flights from Portland Airport to San Francisco Airport refresh daily.

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

There are 4 operators available for flights from Portland Airport to San Francisco Airport as of July 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$130 Cheap Flights from Portland, Maine to San Francisco in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $478 to $652. The lowest price recently found on this route was $269.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland, Maine to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 1:10 pm

PWM

SFO

10h 10m

1 stop

11:50 am - 11:52 pm

SFO

PWM

9h 02m

1 stop

$269JetBlue

Wed, Oct 14 - Wed, Oct 21

5:40 am - 10:55 am

PWM

SFO

8h 15m

1 stop

10:30 pm - 10:35 am

SFO

PWM

9h 05m

1 stop

$349Southwest

Sat, Aug 22 - Sat, Aug 29

5:20 am - 2:35 pm

PWM

SFO

12h 15m

1 stop

11:40 pm - 10:55 am

SFO

PWM

8h 15m

1 stop

$354Southwest

Fri, Oct 16 - Tue, Oct 20

5:40 am - 10:55 am

PWM

SFO

8h 15m

1 stop

10:30 pm - 10:35 am

SFO

PWM

9h 05m

1 stop

$359Southwest

Sat, Sep 5 - Sat, Sep 12

5:20 am - 2:35 pm

PWM

SFO

12h 15m

1 stop

11:40 pm - 10:55 am

SFO

PWM

8h 15m

1 stop

$364Southwest

Fri, Oct 16 - Mon, Oct 26

12:09 pm - 6:00 pm

PWM

SFO

8h 51m

1 stop

7:40 am - 9:56 pm

SFO

PWM

11h 16m

1 stop

$369American Airlines

Wed, Sep 2 - Wed, Sep 16

5:10 am - 1:50 pm

PWM

SFO

11h 40m

1 stop

11:35 pm - 2:45 pm

SFO

PWM

12h 10m

2 stops

$374Southwest

Tue, Nov 10 - Fri, Nov 13

2:40 pm - 12:38 am

PWM

SFO

12h 58m

1 stop

11:50 pm - 12:30 pm

SFO

PWM

9h 40m

1 stop

$377JetBlue

Wed, Jul 29 - Sun, Aug 2

7:40 am - 2:10 pm

PWM

SFO

9h 30m

2 stops

7:10 pm - 9:55 am

SFO

PWM

11h 45m

2 stops

$379Southwest

Thu, Aug 20 - Tue, Aug 25

6:30 am - 8:05 pm

PWM

SFO

16h 35m

2 stops

9:35 pm - 9:50 am

SFO

PWM

9h 15m

1 stop

$380Southwest

Thu, Oct 15 - Sun, Oct 18

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JetBlue flights from Portland, Maine to San Francisco

Our best JetBlue deals on Portland, Maine to San Francisco flight tickets

JetBlue

Oct 14

PWM6:00 amPortland

10h 10m

1 stop

SFO1:10 pmSan Francisco

Oct 21

SFO11:50 amSan Francisco

9h 02m

1 stop

PWM11:52 pmPortland

$269

JetBlue

Jul 29

PWM2:40 pmPortland

12h 58m

1 stop

SFO12:38 amSan Francisco

Aug 2

SFO11:50 pmSan Francisco

9h 40m

1 stop

PWM12:30 pmPortland

$377

JetBlue

Nov 9

PWM6:30 amPortland

10h 08m

1 stop

SFO1:38 pmSan Francisco

Nov 17

SFO12:15 pmSan Francisco

8h 28m

1 stop

PWM11:43 pmPortland

$387

United Airlines flights from Portland, Maine to San Francisco

Our best United Airlines deals on Portland, Maine to San Francisco flight tickets

United Airlines

Sep 5

PWM5:03 pmPortland

8h 56m

1 stop

SFO10:59 pmSan Francisco

Sep 12

SFO8:44 amSan Francisco

5h 47m

PWM5:31 pmPortland

$397

United Airlines

Aug 23

PWM7:30 amPortland

6h 35m

SFO11:05 amSan Francisco

Aug 27

SFO11:14 pmSan Francisco

7h 50m

1 stop

PWM10:04 amPortland

$435

United Airlines

Sep 22

PWM4:57 pmPortland

10h 33m

1 stop

SFO12:30 amSan Francisco

Sep 26

SFO8:30 amSan Francisco

5h 47m

PWM5:17 pmPortland

$461

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 10/14

6:00 am-1:10 pm

1 stop10h 10m

San Francisco

Wed 10/21

11:50 am-11:52 pm

1 stop9h 02m

$269

Quickest round-trip

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Sat 8/22

5:40 am-10:55 am

1 stop8h 15m

San Francisco

Sat 8/29

10:30 pm-10:35 am

1 stop9h 05m

$349

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/16

5:20 am-2:35 pm

1 stop12h 15m

San Francisco

Tue 10/20

11:40 pm-10:55 am

1 stop8h 15m

$354

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Sat 9/5

5:40 am-10:55 am

1 stop8h 15m

San Francisco

Sat 9/12

10:30 pm-10:35 am

1 stop9h 05m

$359

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/16

5:20 am-2:35 pm

1 stop12h 15m

San Francisco

Mon 10/26

11:40 pm-10:55 am

1 stop8h 15m

$364

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 9/2

12:09 pm-6:00 pm

1 stop8h 51m

San Francisco

Wed 9/16

7:40 am-9:56 pm

1 stop11h 16m

$369

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Tue 11/10

5:10 am-1:50 pm

1 stop11h 40m

San Francisco

Fri 11/13

11:35 pm-2:45 pm

2 stops12h 10m

$374

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 7/29

2:40 pm-12:38 am

1 stop12h 58m

San Francisco

Sun 8/2

11:50 pm-12:30 pm

1 stop9h 40m

$377

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 8/20

7:40 am-2:10 pm

2 stops9h 30m

San Francisco

Tue 8/25

7:10 pm-9:55 am

2 stops11h 45m

$379

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 10/15

6:30 am-8:05 pm

2 stops16h 35m

San Francisco

Sun 10/18

9:35 pm-9:50 am

1 stop9h 15m

$380

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Layovers

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

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $406.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Portland, Maine to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $619. Flights in the afternoon are often more expensive with an average ticket price of $1,141.

What is the cheapest Portland to San Francisco flight route?

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

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

You are more likely to see cheaper flights to San Francisco from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $496 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Portland, Maine for as low as $318 on momondo.

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

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

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

As of July 2026, prices for Portland, Maine to San Francisco flights are approximately 17% cheaper when compared to flights at the same time last year.

When to book flights from Portland, Maine to San Francisco

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

Estimated round-trip price

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

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

Fastest flight time	6h 35m
Direct flights	Mon and Sun
Airports in San Francisco	1 airport

The fastest flight from Portland, Maine to San Francisco takes 6h 35m

Direct flights go from Portland, Maine to San Francisco on Monday and Sunday. There are no airlines offering direct flights.

There is 1 airport in San Francisco. From Portland, Maine there are direct flights to San Francisco (SFO).

Search flight deals

Frequently asked questions about flying from Portland, Maine to San Francisco

How far is Portland to San Francisco by plane?
Portland and San Francisco are 2713.5 mi apart from one another. In terms of flight time, this usually takes a little over 6h 35m.
When did momondo last update prices for flights from Portland Airport to San Francisco Airport?
Prices for flights from Portland Airport to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to San Francisco Airport?
There are 4 operators available for flights from Portland Airport to San Francisco Airport as of July 2026.
How old do you have to be to fly from Portland Airport to San Francisco Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Portland, Maine to San Francisco?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portland, Maine to San Francisco is Boeing 737 MAX 8 (100.00% of total bookings).
What is the most popular airline from Portland, Maine to San Francisco?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland, Maine to San Francisco is American Airlines (45% of total bookings). The next most popular airlines are United Airlines (33%), Delta (15%), and Southwest (7%).

Best airlines flying from Portland, Maine to San Francisco

Compare and see reviews for airlines that fly from Portland, Maine to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $251	Free Cancellation	Rating 7.1 11,818 reviews	Search American Airlines flights
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.4 9,997 reviews	Search United Airlines flights
Southwest	PriceFrom $272	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.8 8,474 reviews	Search Delta flights

Santa Cruz

Carmel-by-the-Sea

Modesto

South San Francisco

Hayward

Fremont

Sonoma

Bodega Bay

Walnut Creek

Roseville

Santa Clara

Berkeley

Vallejo

Salinas

Sunnyvale

Burlingame

Daly City

Big Sur

Milpitas

Palo Alto

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to San Francisco for you.

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

Yes. All flights to San Francisco from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from Portland.

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

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

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Cheap flights from Portland, Maine to San Francisco from $130

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to San Francisco departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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JetBlue flights from Portland, Maine to San Francisco

Our best JetBlue deals on Portland, Maine to San Francisco flight tickets

United Airlines flights from Portland, Maine to San Francisco

Our best United Airlines deals on Portland, Maine to San Francisco flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to San Francisco that are best for you.

See travel insights to San Francisco from

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

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

What is the cheapest month to fly to San Francisco?

What is the cheapest time of day to depart on your flight to San Francisco?

What is the cheapest Portland to San Francisco flight route?

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

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

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

What is the cheapest airline that flies from Portland to San Francisco?

What airlines fly to San Francisco?

Which airport is the most popular layover for flights between Portland, Maine and San Francisco?

Which layover airport offers the lowest fares from Portland, Maine to San Francisco?

Which layover airport has the shortest travel time from Portland, Maine to San Francisco?

Which layover airport has the shortest connection time from Portland, Maine to San Francisco?

When to book flights from Portland, Maine to San Francisco

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

Fastest flight time

Direct flights

Airports in San Francisco

Frequently asked questions about flying from Portland, Maine to San Francisco

Best airlines flying from Portland, Maine to San Francisco

Compare and see reviews for airlines that fly from Portland, Maine to San Francisco with momondo

Traveling to a place near San Francisco?

Why use momondo?

An easier way to manage your San Francisco 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to San Francisco

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to San Francisco

List of cabin classes available on flights landing in San Francisco. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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