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

American Airlines, at $247, was found to be the cheapest airline from San Francisco to Portland, Maine.Alternate airlines to your destination round-trip include Frontier and Delta. American Airlines is priced at 54% lower than the current average price of a flight leaving 3 months from now.

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

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $109. Delta flights start at $139 while deals on Sun Country Air start at $153 one-way.

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

Travelers seeking maximum savings on their San Francisco to Portland, Maine flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Before booking your flight from San Francisco to Portland, Maine check out the most popular airlines for this route: American Airlines, JetBlue or Delta.

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

Travelers have found that booking a Monday departure is the best way to save up to 41% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

Travelers have found it’s best to book a flight 53 days in advance to save up to 161% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 53 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Francisco to Portland, Maine 1-2 weeks in advance for as low as $438, or $645 for flights within the next 24 hours.

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

January can be a great time to fly to Portland, Maine from San Francisco with a flight ticket averaging about $542. Cheapflights users have found deals in the month of January for as cheap as $212. The most expensive prices can be found in the month of July.

Most accurate provider : When it comes to deals on San Francisco-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Portland, Maine flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Francisco-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$109+ Save on Flights from San Francisco to Portland, ME

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from San Francisco to Portland are usually found in January or September, booked 52 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from San Francisco to Portland

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$247 (American Airlines)
One-way from	$109 (American Airlines)
Popular in	July
Cheapest in	January
Average price	$690

Provider with most accurate pricing for San Francisco-Portland flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Francisco-Portland flights.

Search Deals

From San Francisco to Portland

Search Deals

One-way flight from San Francisco to Portland

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($70 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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 March 25, 2025.

Tue 6/311:52 amSFO - PWM

1 stop7h 53mAmerican Airlines

Sat 6/76:18 pmPWM - SFO

1 stop8h 54mAmerican Airlines

Deal found 3/23

$247

Mon 8/1112:40 amSFO - PWM

1 stop7h 16mDelta

Wed 8/2012:59 pmPWM - SFO

2 stops13h 16mDelta

Deal found 3/24

$282

Fri 5/29:57 pmSFO - PWM

1 stop19h 32mFrontier

Sun 5/48:23 pmPWM - SFO

1 stop19h 35mFrontier

Deal found 3/24

$300

Wed 4/2311:20 pmSFO - PWM

1 stop8h 42mUnited Airlines

Wed 4/306:45 pmPWM - SFO

1 stop9h 37mUnited Airlines

Deal found 3/24

$347

Mon 3/3110:34 amSFO - PWM

1 stop9h 45mJetBlue

Thu 4/36:10 amPWM - SFO

1 stop9h 45mJetBlue

Deal found 3/24

$352

Tue 6/35:00 pmSFO - PWM

2 stops15h 30mSouthwest

Sat 6/71:05 pmPWM - SFO

2 stops13h 05mSouthwest

Deal found 3/23

$359

Fri 6/2011:59 pmSFO - PWM

1 stop8h 58mSun Country Air

Sun 6/2212:40 pmPWM - SFO

1 stop22h 28mSun Country Air

Deal found 3/24

$465

Best flights from San Francisco to Portland
Discover carefully curated flight deals from San Francisco to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Tue 6/311:52 amSFO - PWM

1 stop7h 53mAmerican Airlines

Sat 6/76:18 pmPWM - SFO

1 stop8h 54mAmerican Airlines

Deal found 3/23

$247

Fri 5/29:57 pmSFO - PWM

1 stop19h 32mFrontier

Sun 5/48:23 pmPWM - SFO

1 stop19h 35mFrontier

Deal found 3/24

$300

Wed 6/181:00 pmSFO - PWM

1 stop8h 46mDelta

Wed 6/252:34 pmPWM - SFO

1 stop9h 23mDelta

Deal found 3/24

$308

Wed 4/2311:20 pmSFO - PWM

1 stop8h 42mUnited Airlines

Wed 4/306:45 pmPWM - SFO

1 stop9h 37mUnited Airlines

Deal found 3/24

$347

Mon 3/3110:34 amSFO - PWM

1 stop9h 45mJetBlue

Thu 4/36:10 amPWM - SFO

1 stop9h 45mJetBlue

Deal found 3/24

$352

Tue 6/35:00 pmSFO - PWM

2 stops15h 30mSouthwest

Sat 6/71:05 pmPWM - SFO

2 stops13h 05mSouthwest

Deal found 3/23

$359

Fri 6/2011:59 pmSFO - PWM

1 stop8h 58mSun Country Air

Sun 6/2212:40 pmPWM - SFO

1 stop22h 28mSun Country Air

Deal found 3/24

$465

Fri 6/2011:59 pmSFO - PWM

1 stop8h 58mMultiple Airlines

Sat 6/288:07 pmPWM - SFO

2 stops29h 46mMultiple Airlines

Deal found 3/23

$706

Mon 6/25:50 pmSFO - PWM

3 stops39h 03mBreeze Airways

Fri 6/136:16 pmPWM - SFO

2 stops20h 23mBreeze Airways

Deal found 3/24

$1,104

Last-minute flights from San Francisco to Portland
Discover last-minute flight deals from San Francisco to Portland. Data last updated March 25, 2025 and is based on user searches.

Mon 3/248:05 amSFO - PWM

2 stops13h 00mSouthwest

Mon 3/315:50 amPWM - SFO

2 stops13h 25mSouthwest

Deal found 3/24

$656

Mon 3/3110:34 amSFO - PWM

1 stop9h 45mJetBlue

Thu 4/36:10 amPWM - SFO

1 stop9h 45mJetBlue

Deal found 3/24

$352

Mon 3/316:25 pmSFO - PWM

2 stops14h 51mDelta

Wed 4/23:00 pmPWM - SFO

1 stop11h 30mDelta

Deal found 3/24

$440

Tue 4/112:15 amSFO - PWM

2 stops10h 34mAmerican Airlines

Tue 4/812:50 pmPWM - SFO

1 stop10h 36mAmerican Airlines

Deal found 3/24

$372

Wed 4/210:46 pmSFO - PWM

1 stop9h 41mUnited Airlines

Mon 4/711:45 amPWM - SFO

1 stop10h 21mUnited Airlines

Deal found 3/24

$367

Thu 4/1710:30 pmSFO - PWM

1 stop15h 33mFrontier

Mon 4/213:11 pmPWM - SFO

1 stop25h 08mFrontier

Deal found 3/24

$330

Tue 4/2210:48 pmSFO - PWM

1 stop10h 17mAmerican Airlines

Tue 4/296:00 amPWM - SFO

1 stop9h 17mAmerican Airlines

Deal found 3/24

$267

Wed 4/2310:04 amSFO - PWM

2 stops11h 38mDelta

Wed 4/301:00 pmPWM - SFO

1 stop9h 00mDelta

Deal found 3/24

$327

Wed 4/2311:20 pmSFO - PWM

1 stop8h 42mUnited Airlines

Wed 4/306:45 pmPWM - SFO

1 stop9h 37mUnited Airlines

Deal found 3/24

$347

One-way flights from San Francisco to Portland
Search for one-way flight options from San Francisco to Portland. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Sat 6/75:20 amSFO - PWM

1 stop8h 51mAmerican Airlines

Deal found 3/23

$109

Sun 4/1310:45 pmSFO - PWM

1 stop10h 22mDelta

Deal found 3/24

$139

Wed 5/216:09 pmSFO - PWM

1 stop14h 32mSun Country Air

Deal found 3/24

$153

Tue 4/810:30 pmSFO - PWM

1 stop31h 57mFrontier

Deal found 3/24

$156

Mon 4/2810:44 pmSFO - PWM

1 stop8h 08mUnited Airlines

Deal found 3/23

$161

Thu 6/510:45 pmSFO - PWM

2 stops13h 20mSouthwest

Deal found 3/23

$235

Wed 5/216:09 pmSFO - PWM

3 stops22h 08mMultiple Airlines

Deal found 3/24

$469

Mon 6/165:50 pmSFO - PWM

3 stops39h 03mBreeze Airways

Deal found 3/23

$729

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 6/3

11:52 am-10:45 pm

1 stop7h 53m

Portland

Sat 6/7

6:18 pm-12:12 am

1 stop8h 54m

$247

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Fri 5/2

9:57 pm-8:29 pm

1 stop19h 32m

Portland

Sun 5/4

8:23 pm-12:58 pm

1 stop19h 35m

$300

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 6/18

1:00 pm-12:46 am

1 stop8h 46m

Portland

Wed 6/25

2:34 pm-8:57 pm

1 stop9h 23m

$308

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Wed 4/23

11:20 pm-11:02 am

1 stop8h 42m

Portland

Wed 4/30

6:45 pm-1:22 am

1 stop9h 37m

$347

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Mon 3/31

10:34 am-11:19 pm

1 stop9h 45m

Portland

Thu 4/3

6:10 am-12:55 pm

1 stop9h 45m

$352

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Tue 6/3

5:00 pm-11:30 am

2 stops15h 30m

Portland

Sat 6/7

1:05 pm-11:10 pm

2 stops13h 05m

$359

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Fri 6/20

11:59 pm-11:57 am

1 stop8h 58m

Portland

Sun 6/22

12:40 pm-8:08 am

1 stop22h 28m

$465

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Fri 6/20

11:59 pm-11:57 am

1 stop8h 58m

Portland

Sat 6/28

8:07 pm-10:53 pm

2 stops29h 46m

$706

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Mon 6/2

5:50 pm-11:53 am

3 stops39h 03m

Portland

Fri 6/13

6:16 pm-11:39 am

2 stops20h 23m

$1,104

San FranciscoPortland

SFO - PWM

SFOPWM

San Francisco

Sat 6/7

5:20 am-5:11 pm

1 stop8h 51m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 17 results

Compare providers for flights from San Francisco to Portland

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Portland in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Francisco-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Portland, Maine flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Francisco-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

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 52 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 April is currently the most expensive (average of $423). 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?

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.

Rainfall in Portland by month

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

To help decide which airline to fly from San Francisco to Portland, see what other customers have to say about Southwest, Delta and Breeze Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.0

Very good

4,272 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

7,890 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Breeze Airways

8.0

Very good

156 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,605 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

JetBlue

7.3

Good

2,924 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

What are the cheapest airlines flying from San Francisco to Portland, Maine round-trip?
American Airlines, at $247, was found to be the cheapest airline from San Francisco to Portland, Maine.Alternate airlines to your destination round-trip include Frontier and Delta. American Airlines is priced at 54% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from San Francisco to Portland, Maine one-way?
To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $109. Delta flights start at $139 while deals on Sun Country Air start at $153 one-way.
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 April is currently the most expensive (average of $423). 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

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Conway

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Top 6 airlines flying from San Francisco to Portland

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$247	Average$387	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$256	Average$436	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$266	Average$531	FlexibilityNo cancel fee	On-time71%
Sun Country Air	Cheapest$298	Average$475	FlexibilityNo cancel fee	On-time83%
United Airlines	Cheapest$331	Average$620	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$466	Average$626	FlexibilityNo cancel fee	On-time63%

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$109+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Portland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Francisco to Portland are usually found in January or September, booked 52 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from San Francisco to Portland

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from San Francisco to Portland

Cheapest flights from San Francisco to PortlandExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from San Francisco to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Portland in March.

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.

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 March 21, 2025.

What is the cheapest month to book a flight from San Francisco to Portland, Maine?

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 March 25, 2025.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

Reviews of airlines servicing Portland

To help decide which airline to fly from San Francisco to Portland, see what other customers have to say about Southwest, Delta and Breeze Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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

Can I find deals for flights from San Francisco to Portland that include hotel bookings?

How can I find direct flights from San Francisco to Portland?

Can I find deals for business class flights from San Francisco to Portland?

What is the cheapest month to book a flight from San Francisco to Portland, Maine?

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Alternative routes for San Francisco to Portland

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Top 6 airlines flying from San Francisco to Portland

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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 March 25, 2025.