$200+ Cheap flights from Portland, ME to San Diego (PWM - SAN)
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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAN
Apr 22 — Apr 291
Round-trip
1 adult, Economy
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Find cheap flights from Portland to San Diego 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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Cheapest flights from Portland to San DiegoExplore the most affordable flight options available from Portland to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
Explore the most affordable flight options available from Portland to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 5/411:29 am
PWM
- SAN
2 stops39h 21m
Multiple Airlines
Tue 5/1212:54 pm
SAN
- PWM
1 stop24h 22m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Thu 5/73:11 pm
PWM
- SAN
1 stop23h 37m
Breeze Airways
Tue 5/1212:54 pm
SAN
- PWM
1 stop24h 22m
Breeze Airways
Deal found 3/22![Breeze Airways logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/2711:29 am
PWM
- SAN
2 stops35h 35m
Multiple Airlines
Tue 5/1912:54 pm
SAN
- PWM
1 stop24h 22m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 5/411:29 am
PWM
- SAN
2 stops39h 21m
Multiple Airlines
Mon 5/1112:33 pm
SAN
- PWM
1 stop22h 58m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Thu 5/143:49 pm
PWM
- SAN
1 stop22h 59m
Breeze Airways
Tue 5/1912:54 pm
SAN
- PWM
1 stop24h 22m
Breeze Airways
Deal found 3/21![Breeze Airways logo]()
$397
This Delta deal was found by Cheapflights users on 3/18. 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 4/282:51 pm
PWM
- SAN
1 stop8h 54m
Delta
Tue 5/191:10 pm
SAN
- PWM
1 stop8h 33m
Delta
Deal found 3/18![Delta logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Wed 5/65:01 pm
PWM
- SAN
1 stop21h 23m
Breeze Airways
Tue 5/1212:54 pm
SAN
- PWM
1 stop24h 22m
Breeze Airways
Deal found 3/22![Breeze Airways logo]()
$402
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/286:04 am
PWM
- SAN
1 stop8h 21m
United Airlines
Tue 5/510:46 am
SAN
- PWM
2 stops10h 13m
United Airlines
Deal found 3/18![United Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 3/18. 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 4/304:43 pm
PWM
- SAN
1 stop9h 23m
Delta
Tue 5/51:23 pm
SAN
- PWM
1 stop8h 23m
Delta
Deal found 3/18![Delta logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Sat 5/95:01 pm
PWM
- SAN
1 stop21h 23m
Breeze Airways
Tue 5/1912:54 pm
SAN
- PWM
1 stop24h 22m
Breeze Airways
Deal found 3/21![Breeze Airways logo]()
$413
This Delta deal was found by Cheapflights users on 3/18. 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 4/114:48 pm
PWM
- SAN
1 stop9h 11m
Delta
Wed 4/159:45 pm
SAN
- PWM
2 stops13h 26m
Delta
Deal found 3/18![Delta logo]()
$415
Best flights from Portland to San DiegoDiscover carefully curated flight deals from Portland to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
Discover carefully curated flight deals from Portland to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
This Delta deal was found by Cheapflights users on 3/17. 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 5/282:38 pm
PWM
- SAN
1 stop8h 57m
Delta
Tue 6/96:15 am
SAN
- PWM
2 stops14h 38m
Delta
Deal found 3/17![Delta logo]()
$415
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/236:04 am
PWM
- SAN
1 stop8h 21m
United Airlines
Mon 4/278:37 pm
SAN
- PWM
2 stops10h 45m
United Airlines
Deal found 3/18![United Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 3/17. 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 4/113:02 pm
PWM
- SAN
2 stops9h 53m
American Airlines
Wed 4/157:20 pm
SAN
- PWM
2 stops11h 47m
American Airlines
Deal found 3/17![American Airlines logo]()
$501
This Southwest deal was found by Cheapflights users on 3/21. 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 5/42:50 pm
PWM
- SAN
2 stops11h 05m
Southwest
Fri 6/126:25 am
SAN
- PWM
1 stop12h 45m
Southwest
Deal found 3/21![Southwest logo]()
$520
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Sat 4/256:00 am
PWM
- SAN
1 stop8h 25m
United Airlines
Thu 4/307:00 pm
SAN
- PWM
2 stops10h 49m
United Airlines
Deal found 3/20![United Airlines logo]()
$457
This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:48 pm
PWM
- SAN
2 stops9h 55m
Delta
Thu 5/141:10 pm
SAN
- PWM
1 stop8h 33m
Delta
Deal found 3/21![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 3/21. 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.
Mon 5/43:23 pm
PWM
- SAN
1 stop8h 49m
United Airlines
Fri 6/1210:30 pm
SAN
- PWM
1 stop7h 53m
United Airlines
Deal found 3/21![United Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 3/17. 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 5/292:38 pm
PWM
- SAN
1 stop12h 04m
Delta
Mon 6/810:10 pm
SAN
- PWM
1 stop12h 44m
Delta
Deal found 3/17![Delta logo]()
$493
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Thu 6/113:05 pm
PWM
- SAN
1 stop8h 48m
American Airlines
Sun 6/141:19 pm
SAN
- PWM
1 stop8h 16m
American Airlines
Deal found 3/21![American Airlines logo]()
$543
This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:55 pm
PWM
- SAN
1 stop8h 06m
Delta
Wed 5/206:15 am
SAN
- PWM
2 stops15h 28m
Delta
Deal found 3/21![Delta logo]()
$513
This United Airlines deal was found by Cheapflights users on 3/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:28 pm
PWM
- SAN
1 stop9h 31m
United Airlines
Sun 4/198:37 pm
SAN
- PWM
2 stops9h 48m
United Airlines
Deal found 3/19![United Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:48 pm
PWM
- SAN
1 stop8h 12m
Delta
Sun 5/177:30 am
SAN
- PWM
1 stop14h 13m
Delta
Deal found 3/21![Delta logo]()
$565
Last-minute flights from Portland to San DiegoDiscover last-minute flight deals from Portland to San Diego. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to San Diego. Data last updated March 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/18. 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 4/114:48 pm
PWM
- SAN
1 stop9h 11m
Delta
Wed 4/159:45 pm
SAN
- PWM
2 stops13h 26m
Delta
Deal found 3/18![Delta logo]()
$415
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Sat 4/116:01 pm
PWM
- SAN
1 stop8h 32m
American Airlines
Wed 4/1510:30 pm
SAN
- PWM
1 stop8h 53m
American Airlines
Deal found 3/20![American Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 3/22. 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.
Tue 4/214:43 pm
PWM
- SAN
1 stop9h 23m
Delta
Wed 4/291:23 pm
SAN
- PWM
1 stop8h 23m
Delta
Deal found 3/22![Delta logo]()
$417
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/236:04 am
PWM
- SAN
1 stop8h 21m
United Airlines
Mon 4/278:37 pm
SAN
- PWM
2 stops10h 45m
United Airlines
Deal found 3/18![United Airlines logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/2711:29 am
PWM
- SAN
2 stops35h 35m
Multiple Airlines
Tue 5/1912:54 pm
SAN
- PWM
1 stop24h 22m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 3/18. 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 4/282:51 pm
PWM
- SAN
1 stop8h 54m
Delta
Tue 5/191:10 pm
SAN
- PWM
1 stop8h 33m
Delta
Deal found 3/18![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/286:04 am
PWM
- SAN
1 stop8h 21m
United Airlines
Tue 5/510:46 am
SAN
- PWM
2 stops10h 13m
United Airlines
Deal found 3/18![United Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 3/18. 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 4/304:43 pm
PWM
- SAN
1 stop9h 23m
Delta
Tue 5/51:23 pm
SAN
- PWM
1 stop8h 23m
Delta
Deal found 3/18![Delta logo]()
$410
One-way flights from Portland to San DiegoSearch for one-way flight options from Portland to San Diego. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
Search for one-way flight options from Portland to San Diego. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Tue 4/143:02 pm
PWM
- SAN
1 stop10h 47m
American Airlines
Deal found 3/20![American Airlines logo]()
$200
This United Airlines deal was found by Cheapflights users on 3/20. 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 4/146:00 am
PWM
- SAN
2 stops11h 57m
United Airlines
Deal found 3/20![United Airlines logo]()
$205
This Delta deal was found by Cheapflights users on 3/18. 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 4/114:48 pm
PWM
- SAN
1 stop9h 11m
Delta
Deal found 3/18![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 3/19. 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 4/92:50 pm
PWM
- SAN
2 stops11h 05m
Southwest
Deal found 3/19![Southwest logo]()
$216
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:28 am
PWM
- SAN
1 stop15h 36m
JetBlue
Deal found 3/22![JetBlue logo]()
$227
This American Airlines deal was found by Cheapflights users on 3/20. 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 4/306:01 pm
PWM
- SAN
1 stop8h 32m
American Airlines
Deal found 3/20![American Airlines logo]()
$231
This United Airlines deal was found by Cheapflights users on 3/21. 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.
Thu 4/304:50 pm
PWM
- SAN
1 stop8h 49m
United Airlines
Deal found 3/21![United Airlines logo]()
$244
This Southwest deal was found by Cheapflights users on 3/21. 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.
Thu 4/305:30 am
PWM
- SAN
2 stops10h 10m
Southwest
Deal found 3/21![Southwest logo]()
$249
This Southwest deal was found by Cheapflights users on 3/18. 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 4/1112:45 pm
PWM
- SAN
2 stops10h 25m
Southwest
Deal found 3/18![Southwest logo]()
$285
Find flight deals from Portland to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to San Diego (SAN). 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 March 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $356 (Kiwi.com) |
One-way from | $200 (American Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $602 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to San Diego 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 March 23, 2026.
Use the filters below to find and compare flights from Portland to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 5/28
2:38 pm-8:35 pm
1 stop8h 57m
San Diego
Tue 6/9
6:15 am-11:53 pm
2 stops14h 38m
$415
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 4/23
6:04 am-11:25 am
1 stop8h 21m
San Diego
Mon 4/27
8:37 pm-10:22 am
2 stops10h 45m
$426
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 4/25
6:00 am-11:25 am
1 stop8h 25m
San Diego
Thu 4/30
7:00 pm-8:49 am
2 stops10h 49m
$457
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 5/13
4:48 pm-11:43 pm
2 stops9h 55m
San Diego
Thu 5/14
1:10 pm-12:43 am
1 stop8h 33m
$457
Quickest round-trip
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Mon 5/4
3:23 pm-9:12 pm
1 stop8h 49m
San Diego
Fri 6/12
10:30 pm-9:23 am
1 stop7h 53m
$487
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Fri 5/29
2:38 pm-11:42 pm
1 stop12h 04m
San Diego
Mon 6/8
10:10 pm-1:54 pm
1 stop12h 44m
$493
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 4/11
3:02 pm-9:55 pm
2 stops9h 53m
San Diego
Wed 4/15
7:20 pm-10:07 am
2 stops11h 47m
$501
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 5/9
12:55 pm-6:01 pm
1 stop8h 06m
San Diego
Wed 5/20
6:15 am-12:43 am
2 stops15h 28m
$513
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 4/15
4:28 pm-10:59 pm
1 stop9h 31m
San Diego
Sun 4/19
8:37 pm-9:25 am
2 stops9h 48m
$517
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Mon 5/4
2:50 pm-10:55 pm
2 stops11h 05m
San Diego
Fri 6/12
6:25 am-10:10 pm
1 stop12h 45m
$520
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Portland to San Diego
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 Diego in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-San Diego 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 Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-San Diego 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 Diego 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 Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Portland with our price prediction graph.
PWM-SAN
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 Diego
How far ahead should I book a flight from Portland, Maine to San Diego?
Use this chart to determine the optimal time to book a round-trip flight from Portland to San Diego. Price data was last updated on March 13, 2026.
To ensure you get the cheapest price possible for a flight from Portland, Maine to San Diego, you should look to book at least 44 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Portland, Maine to San Diego?
Currently, March is the cheapest month in which you can book a flight from Portland, Maine to San Diego (average of $118). Flying from Portland, Maine to San Diego in February is currently the most expensive (average of $197). 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.
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated March 23, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Portland to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Portland to San Diego. 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 Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
Browse thousands of different options on Cheapflights for your next trip
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Portland and San Diego flights
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Top 4 airlines flying from Portland to San Diego
Discover the top 4 airlines that operate flights from Portland to San Diego. 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 March 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$311 | Average$467 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$449 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$325 | Average$486 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$350 | Average$503 | FlexibilityNo cancel fee | On-time69% |