$121+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — PWM
Jul 10 — Jul 171
Round-trip
1 adult, Economy
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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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Best
Last-minute
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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 June 10, 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 June 10, 2026.
This JetBlue deal was found by Cheapflights users on 6/9. 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 9/3011:50 am
SFO
- PWM
1 stop9h 02m
JetBlue
Tue 10/66:00 am
PWM
- SFO
1 stop10h 10m
JetBlue
Deal found 6/9![JetBlue logo]()
$259
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/226:00 am
SFO
- PWM
1 stop9h 34m
American Airlines
Wed 7/296:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/9![American Airlines logo]()
$305
This Southwest deal was found by Cheapflights users on 6/10. 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 8/186:50 am
SFO
- PWM
2 stops11h 20m
Southwest
Tue 8/255:45 am
PWM
- SFO
1 stop8h 50m
Southwest
Deal found 6/10![Southwest logo]()
$311
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:50 am
SFO
- PWM
1 stop9h 02m
JetBlue
Mon 10/56:00 am
PWM
- SFO
1 stop30h 10m
JetBlue
Deal found 6/9![JetBlue logo]()
$314
This JetBlue deal was found by Cheapflights users on 6/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:50 pm
SFO
- PWM
1 stop9h 31m
JetBlue
Sat 8/292:40 pm
PWM
- SFO
1 stop12h 56m
JetBlue
Deal found 6/8![JetBlue logo]()
$318
This JetBlue deal was found by Cheapflights users on 6/5. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:50 pm
SFO
- PWM
1 stop10h 55m
JetBlue
Tue 8/181:17 pm
PWM
- SFO
1 stop11h 47m
JetBlue
Deal found 6/5![JetBlue logo]()
$327
This Southwest deal was found by Cheapflights users on 6/8. 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.
Sat 9/1211:05 pm
SFO
- PWM
2 stops10h 40m
Southwest
Sat 9/195:40 am
PWM
- SFO
1 stop8h 15m
Southwest
Deal found 6/8![Southwest logo]()
$334
This Southwest deal was found by Cheapflights users on 6/8. 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.
Sat 8/2910:30 pm
SFO
- PWM
1 stop9h 05m
Southwest
Thu 9/37:40 am
PWM
- SFO
1 stop8h 10m
Southwest
Deal found 6/8![Southwest logo]()
$338
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 June 10, 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 June 10, 2026.
This JetBlue deal was found by Cheapflights users on 6/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:50 pm
SFO
- PWM
1 stop10h 55m
JetBlue
Tue 8/251:17 pm
PWM
- SFO
1 stop11h 47m
JetBlue
Deal found 6/8![JetBlue logo]()
$318
This Southwest deal was found by Cheapflights users on 6/9. 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 8/2810:30 pm
SFO
- PWM
1 stop8h 25m
Southwest
Fri 9/115:55 am
PWM
- SFO
2 stops11h 15m
Southwest
Deal found 6/9![Southwest logo]()
$351
This Delta deal was found by Cheapflights users on 6/9. 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 8/196:00 am
PWM
- SFO
1 stop9h 19m
Delta
Deal found 6/9![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 6/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:15 pm
SFO
- PWM
1 stop7h 36m
United Airlines
Tue 8/117:35 am
PWM
- SFO
1 stop8h 36m
United Airlines
Deal found 6/7![United Airlines logo]()
$475
This Southwest deal was found by Cheapflights users on 6/7. 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.
Mon 8/247:45 pm
SFO
- PWM
2 stops11h 10m
Southwest
Sat 8/295:40 am
PWM
- SFO
2 stops13h 10m
Southwest
Deal found 6/7![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 6/5. 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.
Sun 8/212:12 am
SFO
- PWM
1 stop7h 33m
Delta
Thu 8/136:00 am
PWM
- SFO
1 stop9h 19m
Delta
Deal found 6/5![Delta logo]()
$414
This Southwest deal was found by Cheapflights users on 6/9. 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 8/148:30 am
SFO
- PWM
2 stops10h 55m
Southwest
Fri 8/215:55 am
PWM
- SFO
1 stop10h 05m
Southwest
Deal found 6/9![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 6/9. 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 8/137:45 pm
SFO
- PWM
2 stops11h 05m
Southwest
Tue 8/185:45 am
PWM
- SFO
2 stops11h 55m
Southwest
Deal found 6/9![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 6/9. 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 7/88:55 am
SFO
- PWM
2 stops11h 05m
Southwest
Wed 7/157:30 am
PWM
- SFO
1 stop8h 05m
Southwest
Deal found 6/9![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 6/8. 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 7/227:10 am
SFO
- PWM
2 stops12h 50m
Southwest
Tue 7/285:30 am
PWM
- SFO
2 stops11h 10m
Southwest
Deal found 6/8![Southwest logo]()
$448
This Southwest deal was found by Cheapflights users on 6/6. 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.
Mon 7/209:25 am
SFO
- PWM
2 stops11h 45m
Southwest
Tue 7/285:30 am
PWM
- SFO
2 stops11h 10m
Southwest
Deal found 6/6![Southwest logo]()
$472
Last-minute flights from San Francisco to PortlandDiscover last-minute flight deals from San Francisco to Portland. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Portland. Data last updated June 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:25 am
SFO
- PWM
1 stop10h 09m
American Airlines
Mon 7/136:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/7![American Airlines logo]()
$417
This American Airlines deal was found by Cheapflights users on 6/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/55:00 am
SFO
- PWM
1 stop9h 09m
American Airlines
Mon 7/136:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/6![American Airlines logo]()
$433
This American Airlines deal was found by Cheapflights users on 6/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/611:49 pm
SFO
- PWM
1 stop10h 51m
American Airlines
Mon 7/136:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/7![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/712:48 am
SFO
- PWM
1 stop10h 28m
American Airlines
Wed 7/156:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/9![American Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 6/9. 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 7/88:55 am
SFO
- PWM
2 stops11h 05m
Southwest
Wed 7/157:30 am
PWM
- SFO
1 stop8h 05m
Southwest
Deal found 6/9![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 6/5. 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.
Mon 7/135:50 am
SFO
- PWM
1 stop13h 25m
Southwest
Tue 7/215:30 am
PWM
- SFO
2 stops11h 10m
Southwest
Deal found 6/5![Southwest logo]()
$439
This Delta deal was found by Cheapflights users on 6/9. 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.
Sun 7/1912:35 am
SFO
- PWM
1 stop7h 07m
Delta
Wed 7/296:00 am
PWM
- SFO
1 stop9h 19m
Delta
Deal found 6/9![Delta logo]()
$404
This American Airlines deal was found by Cheapflights users on 6/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:07 pm
SFO
- PWM
1 stop9h 38m
American Airlines
Wed 7/296:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/6![American Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/226:00 am
SFO
- PWM
1 stop9h 34m
American Airlines
Wed 7/296:59 pm
PWM
- SFO
1 stop9h 00m
American Airlines
Deal found 6/9![American Airlines logo]()
$305
This American Airlines deal was found by Cheapflights users on 6/9. 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 7/228:15 am
SFO
- PWM
1 stop11h 21m
American Airlines
Tue 7/282:56 pm
PWM
- SFO
2 stops10h 27m
American Airlines
Deal found 6/9![American Airlines logo]()
$447
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 June 10, 2026.
Search for one-way flight options from San Francisco to Portland. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Southwest deal was found by Cheapflights users on 6/10. 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 6/10![Southwest logo]()
$121
This Delta deal was found by Cheapflights users on 6/9. 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.
Mon 7/1312:35 am
SFO
- PWM
1 stop7h 07m
Delta
Deal found 6/9![Delta logo]()
$153
This Priceline deal was found by Cheapflights users on 6/9. 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.
Tue 8/411:50 pm
SFO
- PWM
1 stop10h 55m
JetBlue
Deal found 6/9![JetBlue logo]()
$164
This Southwest deal was found by Cheapflights users on 6/8. 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.
Fri 8/2810:30 pm
SFO
- PWM
1 stop10h 15m
Southwest
Deal found 6/8![Southwest logo]()
$169
This Southwest deal was found by Cheapflights users on 6/8. 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.
Sat 8/2910:30 pm
SFO
- PWM
1 stop9h 05m
Southwest
Deal found 6/8![Southwest logo]()
$185
This JetBlue deal was found by Cheapflights users on 6/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1311:50 pm
SFO
- PWM
1 stop9h 40m
JetBlue
Deal found 6/6![JetBlue logo]()
$189
This Southwest deal was found by Cheapflights users on 6/7. 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 7/88:55 am
SFO
- PWM
2 stops11h 05m
Southwest
Deal found 6/7![Southwest logo]()
$190
This Southwest deal was found by Cheapflights users on 6/8. 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.
Sat 8/811:05 pm
SFO
- PWM
2 stops10h 40m
Southwest
Deal found 6/8![Southwest logo]()
$195
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 June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $293 (JetBlue) |
One-way from | $121 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $517 |
Good one-way deal | $348 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 June 10, 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
Tue 8/18
11:50 pm-1:45 pm
1 stop10h 55m
Portland
Tue 8/25
1:17 pm-10:04 pm
1 stop11h 47m
$318
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Fri 8/28
10:30 pm-9:55 am
1 stop8h 25m
Portland
Fri 9/11
5:55 am-2:10 pm
2 stops11h 15m
$351
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Mon 8/24
7:45 pm-9:55 am
2 stops11h 10m
Portland
Sat 8/29
5:40 am-3:50 pm
2 stops13h 10m
$379
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Fri 8/14
8:30 am-10:25 pm
2 stops10h 55m
Portland
Fri 8/21
5:55 am-1:00 pm
1 stop10h 05m
$382
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Wed 8/12
11:49 am-12:59 am
1 stop10h 10m
Portland
Wed 8/19
6:00 am-12:19 pm
1 stop9h 19m
$404
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Sun 8/2
12:12 am-10:45 am
1 stop7h 33m
Portland
Thu 8/13
6:00 am-12:19 pm
1 stop9h 19m
$414
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Thu 8/13
7:45 pm-9:50 am
2 stops11h 05m
Portland
Tue 8/18
5:45 am-2:40 pm
2 stops11h 55m
$443
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Wed 7/8
8:55 am-11:00 pm
2 stops11h 05m
Portland
Wed 7/15
7:30 am-12:35 pm
1 stop8h 05m
$443
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Wed 7/22
7:10 am-11:00 pm
2 stops12h 50m
Portland
Tue 7/28
5:30 am-1:40 pm
2 stops11h 10m
$448
San FranciscoPortland
SFO - PWM
SFOPWM
San Francisco
Mon 7/20
9:25 am-12:10 am
2 stops11h 45m
Portland
Tue 7/28
5:30 am-1:40 pm
2 stops11h 10m
$472
Showing 1-10 of 23 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 June.
| 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 33 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 $334). Flying from San Francisco to Portland, Maine in December is currently the most expensive (average of $786). 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 San Francisco to Portland, Maine?
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 June 10, 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.
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
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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 June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$463 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$250 | Average$495 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$292 | Average$409 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$293 | Average$447 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$325 | Average$640 | FlexibilityNo cancel fee | On-time69% |