Cheap flights from Portland to San Francisco (PWM - SFO) from $119

This is the cheapest one-way flight price, found on 10/1. Prices may vary by date and flight preferences.
PWM — SFO
Oct 7 — Oct 141

The best prices from Portland to San Francisco are usually found in January or March, booked 53 days in advance, depart on a Friday or Thursday and return on a Tuesday

How to find the cheapest flight from Portland (PWM) to San Francisco (SFO)

All the information you need to plan the best PWM to SFO flight in 2023: compare Portland to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.

Popular in

July

Cheapest in

January

Round-trip from

$258

One-way from

$157
High demand for flights, 30% potential price rise
Best time to find cheap flights, 46% potential price drop
From Portland to San Francisco
One-way flight from Portland to San Francisco

PWM - SFO

Price

$258 - $433

SFO

Temperature

51.8 - 62.6 °F

SFO

Rainfall

0 - 4.4 inches

What is the cheapest day to fly round-trip from Portland, Maine to San Francisco?

Users have found that flying from Portland, Maine to San Francisco on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save on the cost of your flight from Portland, Maine to San Francisco, book at least 53 days before your planned departure. Booking around this time can save you about 47% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $640 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $765.

What is the cheapest month to fly from Portland, Maine to San Francisco?

January can be a great time to fly to San Francisco from Portland, Maine with a flight ticket averaging about $568. Cheapflights users have found deals in the month of January for as cheap as $253. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from Portland, Maine to San Francisco (PWM - SFO)?

Unlike in the morning, when flights are generally more expensive, you can save up to 37% on flights from Portland, Maine to San Francisco by exploring options for tickets in the afternoon.

Cheap American Airlines flights from Portland to San Francisco

Check out some of the cheapest American Airlines flights we've come across from Portland to San Francisco. Come back soon if you're not finding the exact deal you're looking for.

Cheap United Airlines flights from Portland to San Francisco

Take a gander at the lowest prices we've found on United Airlines flights from Portland to San Francisco. Check back soon if you're not seeing flights that suit your needs.

Cheap Portland to San Francisco flights in October & November 2023

The best prices found for PWM to SFO flights for October, November
These are some of the best deals we've found on flights to San Francisco in 2023 at this time. For more flight deals, be sure to check back very soon.

Portland to San Francisco 2023 flight deals

Cheap flights to San Francisco from Portland found for this year
These are some of the best deals we've found on flights to San Francisco in 2023 at this time. For more flight deals, be sure to check back very soon.

Portland to San Francisco flights leaving soon

Late deals on return flights to San Francisco from Portland, departing today and this week
Have a look at some of the last-minute flights available departing from Portland to San Francisco. Users should examine the flight details to ensure there are no surprises.

One-way flights to San Francisco from Portland

The cheapest one-way flights from Portland to San Francisco
Some of the best available deals we've found on one-way flights from Portland to San Francisco. Users in need of a round-trip flight from Portland to San Francisco instead should update the search form at the top of page.

Find flights from Portland to San Francisco within your budget

Use the slider to find flights from Portland to San Francisco that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$254 - $335

Route

Depart

Return

Price

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/27

1 stop9h 11m

San Francisco

Wed 11/8

1 stop10h 58m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/1

1 stop9h 11m

San Francisco

Mon 11/6

1 stop10h 01m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/27

1 stop9h 17m

San Francisco

Wed 11/8

2 stops11h 36m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/1

1 stop9h 11m

San Francisco

Mon 11/6

2 stops12h 45m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/27

2 stops11h 10m

San Francisco

Tue 11/7

2 stops11h 36m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Sat 11/4

2 stops12h 54m

San Francisco

Wed 11/8

2 stops10h 24m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Fri 10/20

2 stops13h 25m

San Francisco

Fri 10/27

2 stops27h 42m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 11/29

1 stop9h 18m

San Francisco

Wed 12/6

1 stop9h 21m

PortlandSan Francisco

PWM - SFO

PWMSFO

Portland

Wed 10/25

1 stop9h 11m

San Francisco

Thu 11/2

1 stop8h 23m

Flights are sorted by cheapest first

Deals found on 10/1

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown American Airlines, United Airlines and Frontier from Portland to San Francisco. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Alaska Airlines
8.1
Very good
1,394 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Delta
7.9
Good
3,023 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Breeze Airways
7.4
Good
12 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

United Airlines
7.4
Good
1,890 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Overall

8.1

Crew

8.6

Food

7.2

Comfort

8.0

Boarding

8.3

Reviews

1 / 10

They lost my luggage on my way to NY and then again on my way to SF, horrible

Related info for your journey

Useful info, stats and facts about Portland to San Francisco flights.

Can I find flights from Portland, Maine to San Francisco for under $300 on Cheapflights?

Yes, there are multiple flights from Portland, Maine to San Francisco for under $300. The cheapest flight booked recently is on American Airlines for just $254, but on average you can expect to pay $324.

Are there last-minute flights available from Portland, Maine to San Francisco for under $300?

There are currently 4+ open flights from Portland, Maine to San Francisco within the next 7 days for less than $300.

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

American Airlines, at $254, was found to be the cheapest airline from Portland, Maine to San Francisco.Alternate airlines to your destination round-trip include United Airlines and Frontier. Users have found that American Airlines is 55% cheaper than the other options available to this destination.

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

The cheapest airlines for a one-way flight from Portland, Maine to San Francisco are Frontier ($119), Delta ($129), and United Airlines ($132).

What are the most popular airlines that fly from Portland, Maine to San Francisco?

What does PWM to SFO mean?

Great question - PWM to SFO just means Portland Airport to San Francisco Airport. Now you’ll know what these unique codes when you look for flights!

Top 4 airlines flying from Portland to San Francisco

The chart below displays the airlines Cheapflights users traveling from Portland to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$158Average$347FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest$224Average$558FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$256Average$507FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$257Average$492FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to San Francisco.

Can Cheapflights find flights from Portland to San Francisco with no change fees?

Need flexible booking options for your flight to San Francisco from Portland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Portland to San Francisco become cheaper?

Yes, Cheapflights does offer price alerts on Portland to San Francisco flights so you can book your travels when it’s right. The Price Alert feature is available after a flight search is performed above.

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