$176+ 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — PWM
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Portland with Cheapflights
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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Portland
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Best
Last-minute
One-way
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 July 24, 2026.
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 July 24, 2026.
This Priceline deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:30 pm
SFO
- PWM
1 stop8h 13m
JetBlue
Sat 11/146:30 am
PWM
- SFO
1 stop10h 08m
JetBlue
Deal found 7/20![JetBlue logo]()
$269
This JetBlue deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:30 pm
SFO
- PWM
1 stop8h 13m
JetBlue
Wed 11/186:30 am
PWM
- SFO
1 stop10h 08m
JetBlue
Deal found 7/21![JetBlue logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:15 pm
SFO
- PWM
1 stop7h 44m
United Airlines
Sun 8/307:30 am
PWM
- SFO
Nonstop6h 35m
United Airlines
Deal found 7/20![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:14 pm
SFO
- PWM
1 stop7h 50m
United Airlines
Sun 9/207:30 am
PWM
- SFO
Nonstop6h 35m
United Airlines
Deal found 7/23![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:14 pm
SFO
- PWM
1 stop7h 50m
United Airlines
Thu 9/247:25 pm
PWM
- SFO
1 stop8h 34m
United Airlines
Deal found 7/23![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:55 pm
SFO
- PWM
2 stops11h 00m
Southwest
Tue 9/17:45 am
PWM
- SFO
1 stop8h 10m
Southwest
Deal found 7/21![Southwest logo]()
$374
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:35 am
SFO
- PWM
1 stop12h 55m
Southwest
Sat 9/125:40 am
PWM
- SFO
2 stops13h 10m
Southwest
Deal found 7/22![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Sat 9/55:40 am
PWM
- SFO
2 stops13h 10m
Southwest
Deal found 7/24![Southwest logo]()
$384
Best flights from San Francisco to PortlandDiscover 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 July 24, 2026.
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 July 24, 2026.
This American Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:09 am
SFO
- PWM
1 stop11h 04m
American Airlines
Sat 9/1912:52 pm
PWM
- SFO
1 stop8h 58m
American Airlines
Deal found 7/19![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:55 am
SFO
- PWM
2 stops11h 00m
Southwest
Tue 10/279:20 am
PWM
- SFO
1 stop8h 15m
Southwest
Deal found 7/23![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:59 pm
SFO
- PWM
2 stops14h 46m
Delta
Fri 10/164:15 pm
PWM
- SFO
1 stop11h 19m
Delta
Deal found 7/19![Delta logo]()
$472
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:00 am
SFO
- PWM
1 stop9h 42m
United Airlines
Tue 8/255:03 pm
PWM
- SFO
1 stop10h 13m
United Airlines
Deal found 7/23![United Airlines logo]()
$554
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:10 pm
SFO
- PWM
2 stops11h 45m
Southwest
Tue 8/255:45 am
PWM
- SFO
1 stop8h 50m
Southwest
Deal found 7/23![Southwest logo]()
$374
This Southwest deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Sat 9/55:40 am
PWM
- SFO
2 stops13h 10m
Southwest
Deal found 7/24![Southwest logo]()
$384
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:50 pm
SFO
- PWM
2 stops11h 00m
Southwest
Sat 9/55:40 am
PWM
- SFO
1 stop8h 15m
Southwest
Deal found 7/20![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:05 am
SFO
- PWM
1 stop7h 40m
Delta
Mon 10/54:20 pm
PWM
- SFO
1 stop11h 14m
Delta
Deal found 7/19![Delta logo]()
$524
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Mon 8/245:55 am
PWM
- SFO
2 stops11h 15m
Southwest
Deal found 7/20![Southwest logo]()
$472
Last-minute flights from San Francisco to PortlandDiscover last-minute flight deals from San Francisco to Portland. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Portland. Data last updated July 24, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:49 am
SFO
- PWM
1 stop10h 10m
Delta
Wed 8/1911:50 am
PWM
- SFO
1 stop8h 28m
Delta
Deal found 7/22![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/121:15 pm
SFO
- PWM
1 stop7h 44m
United Airlines
Wed 8/195:15 am
PWM
- SFO
1 stop10h 15m
United Airlines
Deal found 7/21![United Airlines logo]()
$402
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:36 am
SFO
- PWM
1 stop9h 16m
American Airlines
Mon 8/243:06 pm
PWM
- SFO
1 stop10h 53m
American Airlines
Deal found 7/20![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
SFO
- PWM
1 stop9h 06m
American Airlines
Tue 8/255:30 am
PWM
- SFO
1 stop9h 02m
American Airlines
Deal found 7/22![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:10 pm
SFO
- PWM
2 stops11h 45m
Southwest
Tue 8/255:45 am
PWM
- SFO
1 stop8h 50m
Southwest
Deal found 7/20![Southwest logo]()
$391
This Southwest deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:05 pm
SFO
- PWM
1 stop14h 30m
Southwest
Tue 8/255:45 am
PWM
- SFO
2 stops11h 20m
Southwest
Deal found 7/19![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:55 pm
SFO
- PWM
2 stops11h 00m
Southwest
Tue 9/17:45 am
PWM
- SFO
1 stop8h 10m
Southwest
Deal found 7/21![Southwest logo]()
$374
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:15 pm
SFO
- PWM
1 stop7h 44m
United Airlines
Sun 8/307:30 am
PWM
- SFO
Nonstop6h 35m
United Airlines
Deal found 7/20![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:50 pm
SFO
- PWM
2 stops11h 00m
Southwest
Sat 9/55:40 am
PWM
- SFO
1 stop8h 15m
Southwest
Deal found 7/20![Southwest logo]()
$398
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:50 am
SFO
- PWM
1 stop9h 40m
Southwest
Fri 9/42:10 pm
PWM
- SFO
1 stop10h 45m
Southwest
Deal found 7/21![Southwest logo]()
$403
One-way flights from San Francisco to PortlandSearch for one-way flight options from San Francisco to Portland. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from San Francisco to Portland. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:22 am
SFO
- PWM
2 stops47h 46m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:56 pm
SFO
- PWM
3 stops41h 49m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$181
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Deal found 7/20![Southwest logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:42 am
SFO
- PWM
2 stops42h 26m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$186
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:25 pm
SFO
- PWM
2 stops11h 30m
Southwest
Deal found 7/22![Southwest logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:30 pm
SFO
- PWM
3 stops58h 38m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$193
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:40 pm
SFO
- PWM
2 stops13h 00m
Southwest
Deal found 7/20![Southwest logo]()
$196
This JetBlue deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:49 am
SFO
- PWM
1 stop9h 05m
JetBlue
Deal found 7/23![JetBlue logo]()
$199
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:30 pm
SFO
- PWM
1 stop8h 20m
Southwest
Deal found 7/20![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:50 am
SFO
- PWM
2 stops12h 20m
Southwest
Deal found 7/20![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/141:10 pm
SFO
- PWM
1 stop8h 49m
Delta
Deal found 7/20![Delta logo]()
$209
Find flight deals from San Francisco to Portland
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (Priceline) |
One-way from | $176 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $618 |
Good round-trip deal | $469 or less |
Good one-way deal | $498 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Portland 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, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
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
Cheapest round-trip
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Thu 9/10
8:09 am-10:13 pm
1 stop11h 04m
Portland
Sat 9/19
12:52 pm-6:50 pm
1 stop8h 58m
$369
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Thu 10/22
9:55 am-11:55 pm
2 stops11h 00m
Portland
Tue 10/27
9:20 am-2:35 pm
1 stop8h 15m
$374
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Tue 8/18
7:10 pm-9:55 am
2 stops11h 45m
Portland
Tue 8/25
5:45 am-11:35 am
1 stop8h 50m
$374
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Tue 9/1
10:30 pm-9:55 am
1 stop8h 25m
Portland
Sat 9/5
5:40 am-3:50 pm
2 stops13h 10m
$384
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Sun 8/30
7:50 pm-9:50 am
2 stops11h 00m
Portland
Sat 9/5
5:40 am-10:55 am
1 stop8h 15m
$398
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Fri 9/25
4:59 pm-10:45 am
2 stops14h 46m
Portland
Fri 10/16
4:15 pm-12:34 am
1 stop11h 19m
$472
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Mon 8/17
10:30 pm-9:55 am
1 stop8h 25m
Portland
Mon 8/24
5:55 am-2:10 pm
2 stops11h 15m
$472
Quickest round-trip
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Wed 9/30
12:05 am-10:45 am
1 stop7h 40m
Portland
Mon 10/5
4:20 pm-12:34 am
1 stop11h 14m
$524
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Tue 8/18
5:00 am-5:42 pm
1 stop9h 42m
Portland
Tue 8/25
5:03 pm-12:16 am
1 stop10h 13m
$554
Cheapest one-way
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Tue 8/25
10:30 pm-9:55 am
1 stop8h 25m
$185
Showing 1-10 of 18 resultsSorted by cheapest first
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
SFO-PWM
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 39 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 $343). Flying from San Francisco to Portland, Maine in December is currently the most expensive (average of $792). 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?
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 July 24, 2026.
When flying from San Francisco to Portland, Maine, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Portland
Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated July 24, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from San Francisco to Portland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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.
Traveling to a place near Portland?
Book flights to Portland if you plan to visit one of these locationsNorth Conway
Lewiston
Brunswick
Conway
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San Francisco and Portland flights
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Top 5 airlines flying from San Francisco to Portland
Discover the top 5 airlines that operate flights from San Francisco to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$521 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$501 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$292 | Average$362 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$293 | Average$454 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$331 | Average$641 | FlexibilityNo cancel fee | On-time69% |