$164+ Cheap flights from Portland, ME to San Francisco (PWM - SFO)
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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
Jul 25 — Aug 11
Round-trip
1 adult, Economy
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Find cheap flights from Portland to San Francisco 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 Portland to San Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to San FranciscoExplore the most affordable flight options available from Portland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 25, 2026.
Explore the most affordable flight options available from Portland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 25, 2026.
This United Airlines deal was found by Cheapflights users on 6/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:03 pm
PWM
- SFO
1 stop8h 56m
United Airlines
Sat 9/128:44 am
SFO
- PWM
Nonstop5h 47m
United Airlines
Deal found 6/22![United Airlines logo]()
$359
This Travelocity deal was found by Cheapflights users on 6/22. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:40 pm
PWM
- SFO
1 stop12h 58m
JetBlue
Sat 9/126:00 am
SFO
- PWM
1 stop14h 52m
JetBlue
Deal found 6/22![JetBlue logo]()
$367
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:00 am
PWM
- SFO
1 stop9h 54m
American Airlines
Wed 9/1610:31 am
SFO
- PWM
1 stop10h 16m
American Airlines
Deal found 6/24![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 6/22. 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.
Sat 9/57:25 am
PWM
- SFO
2 stops12h 00m
Southwest
Sat 9/1210:30 pm
SFO
- PWM
1 stop9h 05m
Southwest
Deal found 6/22![Southwest logo]()
$374
This JetBlue deal was found by Cheapflights users on 6/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:30 am
PWM
- SFO
1 stop10h 08m
JetBlue
Wed 11/1812:15 pm
SFO
- PWM
1 stop8h 28m
JetBlue
Deal found 6/22![JetBlue logo]()
$377
This Southwest deal was found by Cheapflights users on 6/19. 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.
Thu 10/225:30 am
PWM
- SFO
1 stop8h 45m
Southwest
Mon 10/269:55 am
SFO
- PWM
2 stops11h 10m
Southwest
Deal found 6/19![Southwest logo]()
$391
This Southwest deal was found by Cheapflights users on 6/23. 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.
Fri 8/145:55 am
PWM
- SFO
1 stop10h 05m
Southwest
Fri 8/2110:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Deal found 6/23![Southwest logo]()
$393
This Southwest deal was found by Cheapflights users on 6/22. 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.
Fri 9/185:55 am
PWM
- SFO
2 stops11h 15m
Southwest
Mon 9/217:55 pm
SFO
- PWM
2 stops11h 00m
Southwest
Deal found 6/22![Southwest logo]()
$403
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 7/911:47 am
PWM
- SFO
1 stop8h 25m
Delta
Sun 7/1212:35 am
SFO
- PWM
1 stop7h 07m
Delta
Deal found 6/20![Delta logo]()
$409
Best flights from Portland to San FranciscoDiscover carefully curated flight deals from Portland to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 25, 2026.
Discover carefully curated flight deals from Portland to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 25, 2026.
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:57 pm
PWM
- SFO
1 stop10h 53m
United Airlines
Sat 9/198:44 am
SFO
- PWM
Nonstop5h 47m
United Airlines
Deal found 6/24![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 6/20. 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.
Tue 11/1010:00 am
PWM
- SFO
1 stop11h 52m
Delta
Sun 11/159:00 pm
SFO
- PWM
1 stop9h 30m
Delta
Deal found 6/20![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 6/24. 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.
Wed 9/165:45 am
PWM
- SFO
1 stop8h 50m
Southwest
Sat 9/198:00 am
SFO
- PWM
2 stops10h 00m
Southwest
Deal found 6/24![Southwest logo]()
$374
This Southwest deal was found by Cheapflights users on 6/20. 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 8/45:45 am
PWM
- SFO
1 stop8h 50m
Southwest
Sat 8/811:40 pm
SFO
- PWM
2 stops10h 05m
Southwest
Deal found 6/20![Southwest logo]()
$391
This Delta deal was found by Cheapflights users on 6/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:00 am
PWM
- SFO
1 stop9h 19m
Delta
Wed 9/168:59 pm
SFO
- PWM
2 stops10h 46m
Delta
Deal found 6/23![Delta logo]()
$435
This Southwest deal was found by Cheapflights users on 6/23. 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.
Fri 8/145:55 am
PWM
- SFO
1 stop10h 05m
Southwest
Fri 8/217:25 pm
SFO
- PWM
2 stops11h 30m
Southwest
Deal found 6/23![Southwest logo]()
$398
This Southwest deal was found by Cheapflights users on 6/23. 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.
Wed 8/125:45 am
PWM
- SFO
2 stops11h 20m
Southwest
Wed 8/1910:30 am
SFO
- PWM
1 stop8h 35m
Southwest
Deal found 6/23![Southwest logo]()
$415
This Southwest deal was found by Cheapflights users on 6/24. 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 8/45:45 am
PWM
- SFO
1 stop8h 50m
Southwest
Tue 8/1110:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Deal found 6/24![Southwest logo]()
$424
Last-minute flights from Portland to San FranciscoDiscover last-minute flight deals from Portland to San Francisco. Data last updated June 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Francisco. Data last updated June 25, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 7/911:47 am
PWM
- SFO
1 stop8h 25m
Delta
Sun 7/1212:35 am
SFO
- PWM
1 stop7h 07m
Delta
Deal found 6/20![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 6/20. 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 7/106:59 pm
PWM
- SFO
1 stop8h 37m
Delta
Wed 7/1511:30 am
SFO
- PWM
1 stop10h 29m
Delta
Deal found 6/20![Delta logo]()
$438
This Delta deal was found by Cheapflights users on 6/19. 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 7/1011:47 am
PWM
- SFO
2 stops14h 32m
Delta
Mon 7/131:00 pm
SFO
- PWM
1 stop8h 59m
Delta
Deal found 6/19![Delta logo]()
$472
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Mon 8/311:49 pm
SFO
- PWM
1 stop10h 51m
American Airlines
Deal found 6/23![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 6/23. 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 7/233:20 pm
PWM
- SFO
2 stops12h 15m
Southwest
Mon 8/39:10 pm
SFO
- PWM
1 stop9h 45m
Southwest
Deal found 6/23![Southwest logo]()
$422
This American Airlines deal was found by Cheapflights users on 6/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:33 pm
PWM
- SFO
1 stop10h 10m
American Airlines
Tue 8/48:15 am
SFO
- PWM
1 stop11h 21m
American Airlines
Deal found 6/21![American Airlines logo]()
$393
This Southwest deal was found by Cheapflights users on 6/21. 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.
Tue 7/283:45 pm
PWM
- SFO
2 stops10h 35m
Southwest
Tue 8/47:25 pm
SFO
- PWM
2 stops11h 30m
Southwest
Deal found 6/21![Southwest logo]()
$477
This Southwest deal was found by Cheapflights users on 6/22. 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.
Fri 7/315:35 am
PWM
- SFO
1 stop14h 55m
Southwest
Sat 8/811:40 pm
SFO
- PWM
2 stops10h 05m
Southwest
Deal found 6/22![Southwest logo]()
$461
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/318:00 am
PWM
- SFO
2 stops11h 05m
American Airlines
Sat 8/810:53 pm
SFO
- PWM
1 stop9h 45m
American Airlines
Deal found 6/23![American Airlines logo]()
$479
One-way flights from Portland to San FranciscoSearch for one-way flight options from Portland to San Francisco. Find affordable one-way fares based on user searches. Data last updated June 25, 2026.
Search for one-way flight options from Portland to San Francisco. Find affordable one-way fares based on user searches. Data last updated June 25, 2026.
This JetBlue deal was found by Cheapflights users on 6/21. 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.
Thu 8/202:40 pm
PWM
- SFO
1 stop10h 31m
JetBlue
Deal found 6/21![JetBlue logo]()
$164
This JetBlue deal was found by Cheapflights users on 6/21. 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.
Wed 8/192:40 pm
PWM
- SFO
1 stop12h 58m
JetBlue
Deal found 6/21![JetBlue logo]()
$169
This United Airlines deal was found by Cheapflights users on 6/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:35 pm
PWM
- SFO
1 stop8h 24m
United Airlines
Deal found 6/22![United Airlines logo]()
$185
This Priceline deal was found by Cheapflights users on 6/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am
PWM
- SFO
1 stop10h 10m
JetBlue
Deal found 6/24![JetBlue logo]()
$189
This Southwest deal was found by Cheapflights users on 6/20. 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 8/225:40 am
PWM
- SFO
2 stops13h 10m
Southwest
Deal found 6/20![Southwest logo]()
$190
This Southwest deal was found by Cheapflights users on 6/23. 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.
Mon 9/215:55 am
PWM
- SFO
1 stop10h 05m
Southwest
Deal found 6/23![Southwest logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:00 am
PWM
- SFO
2 stops30h 37m
Breeze Airways
Deal found 6/20![Breeze Airways logo]()
$203
This Southwest deal was found by Cheapflights users on 6/23. 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 8/1310:30 am
PWM
- SFO
2 stops11h 00m
Southwest
Deal found 6/23![Southwest logo]()
$207
This American Airlines deal was found by Cheapflights users on 6/20. 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.
Thu 7/306:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/20![American Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 6/23. 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.
Sun 10/45:50 am
PWM
- SFO
1 stop11h 30m
Southwest
Deal found 6/23![Southwest logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:44 pm
PWM
- SFO
2 stops29h 29m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$225
Find flight deals from Portland to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to San Francisco (SFO). 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 June 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (United Airlines) |
One-way from | $164 (JetBlue) |
Popular in | December |
Cheapest in | September |
Average price | $563 |
Good one-way deal | $372 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to San Francisco 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 June 25, 2026.
Use the filters below to find and compare flights from Portland to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Wed 9/16
4:57 pm-12:50 am
1 stop10h 53m
San Francisco
Sat 9/19
8:44 am-5:31 pm
Nonstop5h 47m
$359
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Tue 11/10
10:00 am-6:52 pm
1 stop11h 52m
San Francisco
Sun 11/15
9:00 pm-9:30 am
1 stop9h 30m
$369
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Wed 9/16
5:45 am-11:35 am
1 stop8h 50m
San Francisco
Sat 9/19
8:00 am-9:00 pm
2 stops10h 00m
$374
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Tue 8/4
5:45 am-11:35 am
1 stop8h 50m
San Francisco
Sat 8/8
11:40 pm-12:45 pm
2 stops10h 05m
$391
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Fri 8/14
5:55 am-1:00 pm
1 stop10h 05m
San Francisco
Fri 8/21
7:25 pm-9:55 am
2 stops11h 30m
$398
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Wed 8/12
5:45 am-2:05 pm
2 stops11h 20m
San Francisco
Wed 8/19
10:30 am-10:05 pm
1 stop8h 35m
$415
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Tue 8/4
5:45 am-11:35 am
1 stop8h 50m
San Francisco
Tue 8/11
10:30 pm-9:55 am
1 stop8h 25m
$424
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Wed 9/2
6:00 am-12:19 pm
1 stop9h 19m
San Francisco
Wed 9/16
8:59 pm-10:45 am
2 stops10h 46m
$435
Cheapest one-way
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Wed 8/12
7:35 pm-12:59 am
1 stop8h 24m
$185
PortlandSan Francisco
PWM - SFO
PWMSFO
Portland
Thu 10/1
5:30 am-11:15 am
1 stop8h 45m
$185
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Portland to San Francisco
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 Portland to San Francisco in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-San Francisco 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 Portland, Maine-San Francisco 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 Portland to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Portland with our price prediction graph.
PWM-SFO
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 Portland to San Francisco
How far ahead should I book a flight from Portland, Maine to San Francisco?
The best time to book flights from Portland, Maine to San Francisco is 59 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland, Maine to San Francisco?
Currently, September is the cheapest month in which you can book a flight from Portland, Maine to San Francisco (average of $383). Flying from Portland, Maine to San Francisco in December is currently the most expensive (average of $591). 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.
How much does it cost to fly round-trip from Portland, Maine to San Francisco?
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated June 25, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Portland to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
7.9
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
7.9
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
7.9
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
7.9
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
7.9
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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Find useful and relevant information for your journey from Portland to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Fairfield
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Rancho Cordova
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Portland and San Francisco flights
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Top 4 airlines flying from Portland to San Francisco
Discover the top 4 airlines that operate flights from Portland to San Francisco. 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 June 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$252 | Average$457 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$268 | Average$535 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$272 | Average$541 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$276 | Average$488 | FlexibilityNo cancel fee | On-timeN/A |