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.

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

Chicago (ORD) was the most common stop: 35% of momondo users choosing 1-stop flights on this route connected there.

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

New York (JFK) has the shortest average layover time for this route: 0h 44m.

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

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

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 $296.

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 41% 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.

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 5 operators available for flights from Portland Airport to San Francisco Airport as of April 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.

$146 Cheap Flights from Portland 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 $598 to $363. The lowest price recently found on this route was $301.

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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.

12:55 pm - 5:49 pm

PWM

SFO

7h 54m

1 stop

5:50 am - 4:07 pm

SFO

PWM

7h 17m

1 stop

$301Delta

Thu, May 7 - Sat, May 9

2:50 pm - 11:20 pm

PWM

SFO

11h 30m

1 stop

9:15 pm - 12:05 pm

SFO

PWM

11h 50m

1 stop

$306Southwest

Thu, May 7 - Sat, May 9

7:33 pm - 1:17 am

PWM

SFO

8h 44m

1 stop

9:15 pm - 9:25 am

SFO

PWM

9h 10m

1 stop

$311United Airlines

Thu, Apr 23 - Tue, Apr 28

12:45 pm - 10:10 pm

PWM

SFO

12h 25m

2 stops

9:15 pm - 12:05 pm

SFO

PWM

11h 50m

1 stop

$312Southwest

Thu, May 7 - Sat, May 9

12:55 pm - 5:49 pm

PWM

SFO

7h 54m

1 stop

5:50 am - 4:07 pm

SFO

PWM

7h 17m

1 stop

$323Delta

Thu, May 7 - Sun, May 10

7:23 pm - 1:16 am

PWM

SFO

8h 53m

1 stop

8:15 am - 10:44 pm

SFO

PWM

11h 29m

1 stop

$330American Airlines

Wed, May 20 - Sat, Jun 6

2:24 pm - 9:19 pm

PWM

SFO

9h 55m

1 stop

7:44 am - 9:46 pm

SFO

PWM

11h 02m

1 stop

$340American Airlines

Thu, May 21 - Thu, May 28

6:33 pm - 12:39 am

PWM

SFO

9h 06m

1 stop

10:38 pm - 10:22 am

SFO

PWM

8h 44m

1 stop

$341United Airlines

Thu, Apr 23 - Mon, Apr 27

12:45 pm - 10:10 pm

PWM

SFO

12h 25m

2 stops

8:20 am - 11:10 pm

SFO

PWM

11h 50m

2 stops

$350Southwest

Thu, May 7 - Sat, May 9

1:35 pm - 7:24 pm

PWM

SFO

8h 49m

1 stop

12:40 am - 10:49 am

SFO

PWM

7h 09m

1 stop

$352Delta

Tue, Aug 25 - Mon, Sep 7

Delta flights from Portland, Maine to San Francisco

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

Delta

May 7

PWM12:55 pmPortland

7h 54m

1 stop

SFO5:49 pmSan Francisco

May 9

SFO5:50 amSan Francisco

7h 17m

1 stop

PWM4:07 pmPortland

$301

Delta

May 7

PWM12:55 pmPortland

7h 54m

1 stop

SFO5:49 pmSan Francisco

May 10

SFO5:50 amSan Francisco

7h 17m

1 stop

PWM4:07 pmPortland

$323

Delta

Aug 25

PWM1:35 pmPortland

8h 49m

1 stop

SFO7:24 pmSan Francisco

Sep 7

SFO12:40 amSan Francisco

7h 09m

1 stop

PWM10:49 amPortland

$352

American Airlines flights from Portland, Maine to San Francisco

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

American Airlines

Aug 18

PWM3:03 pmPortland

11h 25m

1 stop

SFO11:28 pmSan Francisco

Aug 25

SFO11:30 pmSan Francisco

11h 21m

1 stop

PWM1:51 pmPortland

$291

American Airlines

May 21

PWM2:24 pmPortland

9h 55m

1 stop

SFO9:19 pmSan Francisco

May 28

SFO7:44 amSan Francisco

11h 02m

1 stop

PWM9:46 pmPortland

$340

American Airlines

May 6

PWM6:00 amPortland

8h 31m

1 stop

SFO11:31 amSan Francisco

May 16

SFO10:35 pmSan Francisco

8h 43m

1 stop

PWM10:18 amPortland

$354

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

Quickest round-trip

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 5/7

12:55 pm-5:49 pm

1 stop7h 54m

San Francisco

Sat 5/9

5:50 am-4:07 pm

1 stop7h 17m

$301

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 5/7

2:50 pm-11:20 pm

1 stop11h 30m

San Francisco

Sat 5/9

9:15 pm-12:05 pm

1 stop11h 50m

$306

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 4/23

7:33 pm-1:17 am

1 stop8h 44m

San Francisco

Tue 4/28

9:15 pm-9:25 am

1 stop9h 10m

$311

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 5/7

12:45 pm-10:10 pm

2 stops12h 25m

San Francisco

Sat 5/9

9:15 pm-12:05 pm

1 stop11h 50m

$312

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 5/7

12:55 pm-5:49 pm

1 stop7h 54m

San Francisco

Sun 5/10

5:50 am-4:07 pm

1 stop7h 17m

$323

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 5/20

7:23 pm-1:16 am

1 stop8h 53m

San Francisco

Sat 6/6

8:15 am-10:44 pm

1 stop11h 29m

$330

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 5/21

2:24 pm-9:19 pm

1 stop9h 55m

San Francisco

Thu 5/28

7:44 am-9:46 pm

1 stop11h 02m

$340

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 4/23

6:33 pm-12:39 am

1 stop9h 06m

San Francisco

Mon 4/27

10:38 pm-10:22 am

1 stop8h 44m

$341

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Thu 5/7

12:45 pm-10:10 pm

2 stops12h 25m

San Francisco

Sat 5/9

8:20 am-11:10 pm

2 stops11h 50m

$350

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Tue 8/25

1:35 pm-7:24 pm

1 stop8h 49m

San Francisco

Mon 9/7

12:40 am-10:49 am

1 stop7h 09m

$352

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 November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $350.

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 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 $443 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 $320 on momondo.

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

There is only 1 cabin class available to choose from on Portland to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland, Maine to San Francisco flights?

You could potentially save up to 37% on your flight if you consider stops on a Portland, Maine to San Francisco flight.

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

As of April 2026, prices for Portland, Maine to San Francisco flights are approximately 26% 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

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 5 operators available for flights from Portland Airport to San Francisco Airport as of April 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 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 (46% of total bookings). The next most popular airlines are United Airlines (28%), Delta (20%), and Southwest (4%).

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
JetBlue	PriceFrom $236	Free Cancellation	Rating 7.2 2,908 reviews	Search JetBlue flights
American Airlines	PriceFrom $243	Free Cancellation	Rating 7.1 11,545 reviews	Search American Airlines flights
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.4 9,529 reviews	Search United Airlines flights
Southwest	PriceFrom $272	Free Cancellation	Rating 8.0 4,334 reviews	Search Southwest flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 8,367 reviews	Search Delta flights

Santa Cruz

Carmel-by-the-Sea

Modesto

Sonoma

Bodega Bay

Walnut Creek

Roseville

Hayward

Berkeley

Santa Clara

Big Sur

Fremont

Vallejo

Calistoga

Salinas

Daly City

Half Moon Bay

Milpitas

South San Francisco

Pacific Grove

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.

An easier way to manage your San Francisco trip

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Cheap flights from Portland, Maine to San Francisco from $111

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 6/2. 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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Filter for what you want

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Delta flights from Portland, Maine to San Francisco

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

American Airlines flights from Portland, Maine to San Francisco

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

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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 Portland to San Francisco flight route?

How far in advance should I book a flight to San Francisco?

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

Can stopping save me money 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

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

Fastest flight time

Direct flights

Airports in 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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