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$182+ Cheap flights from San Diego to Portland, ME (SAN - 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — PWM
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Portland are usually found in February or October, booked 21 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

Cheap flight deals from San Diego to Portland

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$342
(American Airlines)

One-way from

$182
(United Airlines)

Popular in

November

Cheapest in

February

Average price

$428
Provider with most accurate pricing for San Diego-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Portland flights.
Search Deals
From San Diego to Portland
Search Deals
One-way flight from San Diego to Portland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from San Diego to Portland

Cheapest flights from San Diego to Portland
Explore the most affordable flight options available from San Diego to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2025.

This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:30 amSAN - PWM
2 stops13h 02mAmerican Airlines
Mon 12/86:00 amPWM - SAN
1 stop8h 43mAmerican Airlines
Deal found 9/24$342
This Expedia deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2110:06 amSAN - PWM
1 stop9h 58mJetBlue
Fri 10/247:09 amPWM - SAN
1 stop15h 21mJetBlue
Deal found 9/24$344
This Delta deal was found by Cheapflights users on 9/25. 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 10/209:48 pmSAN - PWM
2 stops12h 18mDelta
Wed 10/2912:45 pmPWM - SAN
2 stops12h 46mDelta
Deal found 9/25$368
This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:19 amSAN - PWM
1 stop7h 46mAmerican Airlines
Wed 11/263:52 pmPWM - SAN
1 stop8h 49mAmerican Airlines
Deal found 9/24$370
This Delta deal was found by Cheapflights users on 9/25. 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 10/237:25 amSAN - PWM
2 stops13h 40mDelta
Thu 10/3012:45 pmPWM - SAN
2 stops13h 21mDelta
Deal found 9/25$373
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/189:27 amSAN - PWM
1 stop8h 31mAmerican Airlines
Sat 10/253:30 pmPWM - SAN
1 stop8h 51mAmerican Airlines
Deal found 9/25$379
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/1811:08 amSAN - PWM
2 stops9h 51mUnited Airlines
Sat 10/254:57 pmPWM - SAN
1 stop8h 17mUnited Airlines
Deal found 9/25$384
This Delta deal was found by Cheapflights users on 9/25. 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 10/187:25 amSAN - PWM
2 stops11h 54mDelta
Sat 10/256:30 amPWM - SAN
2 stops11h 02mDelta
Deal found 9/25$387
This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:05 pmSAN - PWM
2 stops12h 31mDelta
Fri 10/244:48 pmPWM - SAN
2 stops9h 39mDelta
Deal found 9/24$393

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 September 25, 2025.
Use the filters below to find and compare flights from San Diego to Portland that are best for you.

Fly from

San Diego

Fly to

Portland

Route

Depart

Return

Price

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 10/21

10:06 am-11:04 pm

1 stop9h 58m

Portland

Fri 10/24

7:09 am-7:30 pm

1 stop15h 21m

$344

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sat 12/6

6:30 am-10:32 pm

2 stops13h 02m

Portland

Mon 12/8

5:46 am-3:21 pm

2 stops12h 35m

$347

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 11/4

10:51 am-9:50 pm

1 stop7h 59m

Portland

Tue 11/11

4:51 pm-10:20 pm

1 stop8h 29m

$363

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 3/3

12:35 pm-11:49 pm

1 stop8h 14m

Portland

Wed 3/4

2:35 pm-10:00 pm

2 stops10h 25m

$368

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 10/20

9:48 pm-1:06 pm

2 stops12h 18m

Portland

Wed 10/29

12:45 pm-10:31 pm

2 stops12h 46m

$368

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 10/20

10:30 pm-9:11 am

1 stop7h 41m

Portland

Wed 10/29

3:20 pm-11:44 pm

2 stops11h 24m

$368

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Wed 11/19

6:19 am-5:05 pm

1 stop7h 46m

Portland

Wed 11/26

3:52 pm-9:41 pm

1 stop8h 49m

$370

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 11/4

7:25 am-11:09 pm

2 stops12h 44m

Portland

Tue 11/11

11:25 am-9:13 pm

2 stops12h 48m

$373

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Thu 10/23

7:25 am-12:05 am

2 stops13h 40m

Portland

Thu 10/30

12:45 pm-11:06 pm

2 stops13h 21m

$373

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Wed 10/29

11:19 am-10:45 pm

1 stop8h 26m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 17 results
1
2

Compare providers for flights from San Diego 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 Diego to Portland in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-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 Diego-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-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 Diego-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 Diego to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from San Diego with our price prediction graph.
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 Diego to Portland

How far ahead should I book a flight from San Diego to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Portland. Price data was last updated on September 19, 2025.

To ensure you get the cheapest price possible for a flight from San Diego to Portland, Maine, you should look to book at least 21 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 San Diego to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from San Diego to Portland, Maine (average of $296). Flying from San Diego to Portland, Maine in July is currently the most expensive (average of $394). 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 SAN to PWM?

Find hourly flight availability from San Diego to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 25, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 17% on flights from San Diego to Portland, Maine by exploring options for tickets in the afternoon.

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 September 25, 2025.
Read through reviews of airlines operating flights from San Diego to Portland, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,973 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Diego to Portland, Maine?

    JetBlue, American Airlines, and United Airlines can get you from San Diego to Portland, Maine in just under 7h 59m. Your travel time can differ by up to 5h 03m. The distance between San Diego and Portland, Maine is about 2616 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Diego to Portland, Maine round-trip?

    Currently priced at $312, American Airlines will fly you from San Diego to Portland, Maine and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $312 and $333, respectively. You may be able to fly from San Diego to Portland, Maine for 37% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Diego to Portland, Maine one-way?

    One-way options have recently been found by users for as low as $182 on American Airlines. Other airlines that offer cheap prices include United Airlines from $187 and Delta from $187 one-way.

  • Can I find deals for flights from San Diego to Portland that include hotel bookings?

    Yes. In addition to deals on San Diego to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Portland.

  • Can I find deals for business class flights from San Diego to Portland?

    Yes. Cheapflights offers flight deals from San Diego to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Portland, Maine (average of $296). Flying from San Diego to Portland, Maine in July is currently the most expensive (average of $394). 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.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Brunswick
North Conway
Auburn
Conway

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Top 4 airlines flying from San Diego to Portland

Discover the top 4 airlines that operate flights from San Diego 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 September 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$312Average$434FlexibilityNo cancel feeOn-time71%
DeltaCheapest$312Average$508FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$333Average$586FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$361Average$484FlexibilityNo cancel feeOn-time63%

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