Cheap Flights from San Diego, CA to Portland, ME from $249

Return flight: Portland – San Diego

On Cheapflightsplus.com you will find 30 connecting flights from San Diego to Portland. You can compare airfare deals from 3 airlines and multiple travel sites from $249, book and save on cheap plane tickets and last minute offers. Also check out SAN-PWM flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from San Diego to Portland depends on and how to choose the most interesting flight option for you.

Distance between San Diego and Portland is 4212 miles. Time difference between the cities is 3h. Airplanes depart 06:15 to 22:30 from 11 San Diego airport and arrive 06:15 to 22:30 to 1 Portland airport. Average flight time is 20h 14m.

  • The fastest flight 7h 54m
  • Average flight time 20h 14m
  • The earliest flight 06:15
  • The latest flight 22:30
  • Distance 2618 ml

The cheapest months to travel to Portland are august (from 249 $), july (from 272 $), june (from 274 $).

The most expensive months are october (from 493 $), may (from 370 $), june (from 274 $).

What is the lowest airfare San Diego to Portland?

The cheapest plane ticket found by our users is $249. This airfare is for economy class on one-way UA427 flight by United Airlines for July 25, 2025 which leaves San Diego in San Diego at 21:40 am and arrives at Portland Portland Intl Jetport at 09:24.

Economy class
$249
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Business class
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First class
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Flight Schedule San Diego (California) to Portland (Maine)

06:15 — 09:43+1day
24h 28m flight time
Find flight
from$412
06:15 — 07:37 San Diego — Las Vegas
NK1153 Spirit Airlines
3h 43m stop
11:20 — 20:11 Las Vegas — Tampa
MX149 Mexicana
10h 19m stop
09:00 — 12:13 Tampa — Portland
MX138 Mexicana
06:35 — 14:24+1day
28h 49m flight time
Find flight
from$383
06:30 — 12:49 San Diego — Chicago
UA2343 United Airlines
22h 4m stop
11:05 — 14:31 Chicago — Portland
UA763 United Airlines
08:00 — 23:14
12h 14m flight time
Find flight
from$311
08:00 — 09:38 San Diego — San Francisco
UA2863 United Airlines
2h 2m stop
11:40 — 20:30 San Francisco — Newark
UA2863 United Airlines
1h 15m stop
22:16 — 23:44 Newark — Portland
UA2127 United Airlines
12:42 — 23:59
8h 17m flight time
Find flight
from$273
12:42 — 20:59 San Diego — Washington D.C.
AS14 Alaska Airlines
1h 11m stop
22:10 — 23:59 Washington D.C. — Portland
AS6018 Alaska Airlines
14:05 — 22:01+1day
28h 56m flight time
Find flight
from$323
14:05 — 20:20 San Diego — Chicago
UA2628 United Airlines
22h 10m stop
18:30 — 22:01 Chicago — Portland
UA1974 United Airlines
14:05 — 14:24+1day
21h 19m flight time
Find flight
from$364
14:05 — 20:20 San Diego — Chicago
UA2628 United Airlines
14h 38m stop
10:58 — 14:24 Chicago — Portland
UA763 United Airlines
14:05 — 17:37+1day
24h 32m flight time
Find flight
from$364
14:05 — 20:20 San Diego — Chicago
UA2628 United Airlines
17h 35m stop
13:55 — 17:37 Chicago — Portland
UA5849 United Airlines
17:30 — 22:01+1day
25h 31m flight time
Find flight
from$326
17:00 — 23:15 San Diego — Chicago
UA2486 United Airlines
18h 46m stop
18:25 — 21:56 Chicago — Portland
UA1974 United Airlines
17:30 — 14:24+1day
17h 54m flight time
Find flight
from$370
17:00 — 23:15 San Diego — Chicago
UA2486 United Airlines
11h 14m stop
11:05 — 14:31 Chicago — Portland
UA763 United Airlines
21:40 — 09:24+1day
8h 44m flight time
Find flight
from$249
14:15 — 22:59 San Diego — Newark
UA427 United Airlines
2h 2m stop
08:05 — 09:24 Newark — Portland
UA3514 United Airlines
21:40 — 17:53+1day
17h 13m flight time
Find flight
from$348
14:15 — 22:59 San Diego — Newark
UA427 United Airlines
10h 26m stop
16:49 — 18:13 Newark — Portland
UA255 United Airlines
21:40 — 23:14+1day
22h 34m flight time
Find flight
from$348
14:15 — 22:59 San Diego — Newark
UA427 United Airlines
15h 42m stop
21:45 — 23:14 Newark — Portland
UA2127 United Airlines
22:30 — 09:24+1day
7h 54m flight time
Find flight
from$249
22:30 — 06:52 San Diego — Newark
UA1827 United Airlines
1h 5m stop
08:05 — 09:24 Newark — Portland
UA3514 United Airlines
22:30 — 23:14+1day
21h 44m flight time
Find flight
from$337
22:30 — 06:52 San Diego — Newark
UA1827 United Airlines
14h 45m stop
21:45 — 23:14 Newark — Portland
UA2127 United Airlines
22:30 — 17:53+1day
16h 23m flight time
Find flight
from$348
22:30 — 06:52 San Diego — Newark
UA1827 United Airlines
9h 29m stop
16:49 — 18:13 Newark — Portland
UA255 United Airlines
Full flight schedule will help you in detecting at what time planes fly from San Diego to Portland. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on October 14, 2025.

Popular Airlines on the Route

The flight San Diego — Portland is served by 3 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by Alaska Airlines - 1 departures per week at the price of from $ 273 . And the most expensive tickets are offered by United Airlines airline - from $ 1477.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 30 flights with layovers on the route. The fastest connecting flight is UA1827 by United Airlines takes 7h 54m and the cheapest is UA427 by United Airlines for $249.

  • AS - Alaska Airlines
    from $273
    Find
  • UA - United Airlines
    from $249
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  • NK - Spirit Airlines
    from $412
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See more connecting flights

Airports

You can fly from San Diego to Portland from 11 airports (San Diego, San Diego Regional, Gillespie Field, Golden Triangle Reg., El Cajon, Lowndes County, Miramar NAS, Montgomery Field, North Island NAS, Brown Field Municipal, AFB).

San Diego airports

  • San Diego-SAN
    from $249
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  • San Diego Regional-USA
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  • Gillespie Field-SEE
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  • Golden Triangle Reg.-GTR
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  • El Cajon-CJN
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  • Lowndes County-UBS
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  • Miramar NAS-NKX
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  • Montgomery Field-MYF
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  • North Island NAS-NZY
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  • Brown Field Municipal-SDM
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  • AFB-CBM
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Portland airports

  • Portland Intl Jetport-PWM
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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