$129+ Cheap flights from Portland, ME to San Francisco (PWM - SFO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SFO
Nov 7 — Nov 141
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
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
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Portland to San Francisco are usually found in November or January, booked 78 days in advance, depart on a Tuesday or Monday and return on a Monday
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 October 8, 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 October 8, 2026.
This Southwest deal was found by Cheapflights users on 10/4. 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 12/105:15 am -
1 stop11h 35m
Tue 12/159:25 pm -
1 stop9h 25m
Deal found 10/4![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 10/7. 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 11/412:45 pm -
2 stops14h 10m
Wed 11/119:25 pm -
1 stop10h 05m
Deal found 10/7![Southwest logo]()
$263
This Southwest deal was found by Cheapflights users on 10/8. 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 12/212:45 pm -
2 stops12h 30m
Sat 12/58:15 am -
2 stops10h 35m
Deal found 10/8![Southwest logo]()
$268
This Southwest deal was found by Cheapflights users on 10/5. 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 11/125:20 am -
1 stop11h 25m
Tue 11/179:25 pm -
1 stop9h 25m
Deal found 10/5![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 10/4. 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 11/412:45 pm -
2 stops14h 10m
Tue 11/109:25 pm -
1 stop9h 25m
Deal found 10/4![Southwest logo]()
$331
This Delta deal was found by Cheapflights users on 10/7. 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.
Sat 11/146:00 am -
2 stops16h 49m
Mon 11/1610:40 pm -
1 stop10h 18m
Deal found 10/7![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 10/6. 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 11/51:40 pm -
2 stops12h 45m
Tue 11/109:25 pm -
1 stop9h 25m
Deal found 10/6![Southwest logo]()
$367
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 October 8, 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 October 8, 2026.
This Southwest deal was found by Cheapflights users on 10/4. 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 12/1012:45 pm -
2 stops12h 25m
Tue 12/157:15 am -
2 stops11h 30m
Deal found 10/4![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 10/6. 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 11/112:05 pm -
1 stop11h 44m
Wed 11/186:17 am -
2 stops14h 14m
Deal found 10/6![Delta logo]()
$378
This United Airlines deal was found by Cheapflights users on 10/4. 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 11/115:30 am -
1 stop9h 55m
Sun 11/1510:55 pm -
1 stop8h 12m
Deal found 10/4![United Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 10/8. 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 12/25:15 am -
1 stop11h 35m
Sat 12/58:05 am -
2 stops10h 45m
Deal found 10/8![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 10/7. 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 11/412:45 pm -
2 stops14h 10m
Wed 11/1111:35 pm -
2 stops10h 30m
Deal found 10/7![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 10/8. 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 12/24:00 pm -
2 stops11h 12m
Mon 12/75:56 pm -
2 stops15h 01m
Deal found 10/8![Delta logo]()
$383
This Delta deal was found by Cheapflights users on 10/5. 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 12/1012:49 pm -
1 stop8h 25m
Mon 12/1410:59 pm -
2 stops13h 21m
Deal found 10/5![Delta logo]()
$400
This Southwest deal was found by Cheapflights users on 10/5. 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 11/1112:45 pm -
2 stops14h 10m
Sun 11/159:25 pm -
1 stop9h 25m
Deal found 10/5![Southwest logo]()
$367
This Southwest deal was found by Cheapflights users on 10/6. 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 11/51:40 pm -
2 stops12h 45m
Tue 11/109:25 pm -
1 stop9h 25m
Deal found 10/6![Southwest logo]()
$367
Last-minute flights from Portland to San FranciscoDiscover last-minute flight deals from Portland to San Francisco. Data last updated October 8, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Francisco. Data last updated October 8, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/7. 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 11/412:45 pm -
2 stops14h 10m
Wed 11/119:25 pm -
1 stop10h 05m
Deal found 10/7![Southwest logo]()
$263
This Southwest deal was found by Cheapflights users on 10/4. 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 11/412:45 pm -
2 stops14h 10m
Tue 11/109:25 pm -
1 stop9h 25m
Deal found 10/4![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 10/6. 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 11/51:40 pm -
2 stops12h 45m
Tue 11/109:25 pm -
1 stop9h 25m
Deal found 10/6![Southwest logo]()
$367
This Southwest deal was found by Cheapflights users on 10/5. 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 11/125:20 am -
1 stop11h 25m
Tue 11/179:25 pm -
1 stop9h 25m
Deal found 10/5![Southwest logo]()
$326
This Delta deal was found by Cheapflights users on 10/7. 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 11/126:00 am -
1 stop9h 39m
Wed 11/186:17 am -
2 stops15h 02m
Deal found 10/7![Delta logo]()
$374
This Southwest deal was found by Cheapflights users on 10/7. 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 11/131:40 pm -
2 stops13h 05m
Wed 11/1811:35 pm -
2 stops12h 10m
Deal found 10/7![Southwest logo]()
$377
This Delta deal was found by Cheapflights users on 10/7. 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.
Sat 11/146:00 am -
2 stops16h 49m
Tue 11/1711:59 pm -
1 stop10h 02m
Deal found 10/7![Delta logo]()
$365
This Delta deal was found by Cheapflights users on 10/7. 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.
Sat 11/146:00 am -
2 stops16h 49m
Mon 11/1610:59 pm -
2 stops13h 17m
Deal found 10/7![Delta logo]()
$370
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 October 8, 2026.
Search for one-way flight options from Portland to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 8, 2026.
This Southwest deal was found by Cheapflights users on 10/5. 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 10/289:20 am -
1 stop8h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Southwest logo]()
$129
This Southwest deal was found by Cheapflights users on 10/5. 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 10/303:25 pm -
2 stops10h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Southwest logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 11/35:09 pm -
3 stops46h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/95:35 pm -
2 stops21h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Breeze Airways logo]()
$193
This Delta deal was found by Cheapflights users on 10/6. 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 3/242:35 pm -
1 stop11h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Delta logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 10/275:09 pm -
3 stops46h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/25:35 pm -
2 stops21h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Breeze Airways logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 10/5. 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.
Thu 10/293:10 pm -
3 stops44h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 10/4. 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 11/15:20 am -
1 stop11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$234
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 October 8, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $257 (Southwest) |
One-way from | $129 (Southwest) |
Popular in | July |
Cheapest in | November |
Average price | $468 |
Good round-trip deal | $519 or less |
Good one-way deal | $251 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 7,457,451 searches. Data last updated October 8, 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
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Tue 11/3
5:30 am-11:22 am
1 stop8h 52m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$198
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Wed 3/24
6:00 am-5:11 pm
2 stops14h 11m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$203
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Sun 11/1
5:20 am-1:45 pm
1 stop11h 25m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$234
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Thu 12/31
12:45 pm-10:10 pm
2 stops12h 25m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$239
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Thu 10/22
2:09 pm-10:59 pm
1 stop11h 50m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$250
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Thu 12/10
12:45 pm-10:10 pm
2 stops12h 25m
San Francisco
Tue 12/15
7:15 am-9:45 pm
2 stops11h 30m
$268
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Mon 10/26
5:35 pm-12:01 pm
2 stops21h 26m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$280
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Mon 10/19
7:25 pm-12:59 am
1 stop8h 34m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$319
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Wed 10/14
6:00 am-5:42 pm
2 stops14h 42m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$324
PortlandSan Francisco
PWM Portland - SFO San Francisco
PWMSFO
Portland
Wed 12/2
5:15 am-1:50 pm
1 stop11h 35m
San Francisco
Sat 12/5
8:05 am-9:50 pm
2 stops10h 45m
$331
Showing 1-10 of 19 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Portland, Maine-San Francisco flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Portland, Maine-San Francisco flight deals on Cheapflights vs. Expedia <90% 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 Expedia the most. Expedia 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 76 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, November is the cheapest month in which you can book a flight from Portland, Maine to San Francisco (average of $319). Flying from Portland, Maine to San Francisco in July is currently the most expensive (average of $652). 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 PWM to SFO?
Find hourly flight availability from Portland to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 8, 2026.
When flying from Portland, Maine to San Francisco, 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 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 October 8, 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
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
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.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Walnut Creek
San Bruno
Emeryville
Hayward
Burlingame
Rancho Cordova
Roseville
Redwood City
Cupertino
Newark
Fairfield
San Ramon
Manteca
Vallejo
San Carlos
Turlock
Davis
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Portland and San Francisco flights
Browse other Portland and San Francisco flight options. Last updated on October 8, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on October 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 8, 2026.
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 7,457,451 searches. Data last updated October 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$276 | Average$462 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$554 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$416 | Average$591 | FlexibilityNo cancel fee | On-time63% |