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$169+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAN
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to San Diego are usually found in January or October, booked 66 days in advance, depart on a Wednesday or Friday and return on a Saturday

Cheap 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 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$337
(American Airlines)

One-way from

$169
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$566
Provider with most accurate pricing for Portland-San Diego flight deals.
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Provider most trusted by Cheapflights users for Portland-San Diego flights.
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From Portland to San Diego
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One-way flight from Portland to San Diego
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Portland to San Diego

Cheapest flights from Portland to San Diego
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 25, 2025.

This Delta deal was found by Cheapflights users on 3/24. 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.
Thu 5/15:20 amPWM - SAN
1 stop10h 56mDelta
Mon 5/51:22 pmSAN - PWM
1 stop8h 20mDelta
Deal found 3/24$337
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 5/24:16 pmPWM - SAN
1 stop8h 51mAmerican Airlines
Tue 5/610:39 pmSAN - PWM
1 stop9h 53mAmerican Airlines
Deal found 3/24$352
This United Airlines deal was found by Cheapflights users on 3/23. 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 5/1512:37 pmPWM - SAN
1 stop11h 00mUnited Airlines
Sun 5/1810:10 pmSAN - PWM
1 stop9h 52mUnited Airlines
Deal found 3/23$382
This Southwest deal was found by Cheapflights users on 3/23. 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 9/64:50 pmPWM - SAN
1 stop7h 40mSouthwest
Thu 9/116:55 amSAN - PWM
2 stops10h 05mSouthwest
Deal found 3/23$397
This Mytrip deal was found by Cheapflights users on 3/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:16 pmPWM - SAN
3 stops26h 44mMultiple Airlines
Tue 5/136:00 pmSAN - PWM
2 stops20h 38mMultiple Airlines
Deal found 3/23$740
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/222:33 pmPWM - SAN
2 stops22h 19mAlaska Airlines
Sun 4/278:44 pmSAN - PWM
3 stops23h 05mAlaska Airlines
Deal found 3/24$927
This KAYAK deal was found by Cheapflights users on 3/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/97:16 pmPWM - SAN
3 stops43h 36mBreeze Airways
Tue 5/1312:37 pmSAN - PWM
3 stops26h 01mBreeze Airways
Deal found 3/23$1,326

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

Fly from

Portland

Fly to

San Diego

Route

Depart

Return

Price

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Thu 5/1

5:20 am-1:16 pm

1 stop10h 56m

San Diego

Mon 5/5

1:22 pm-12:42 am

1 stop8h 20m

$337

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Fri 5/2

4:16 pm-10:07 pm

1 stop8h 51m

San Diego

Tue 5/6

10:39 pm-11:32 am

1 stop9h 53m

$352

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Thu 5/15

12:37 pm-8:37 pm

1 stop11h 00m

San Diego

Sun 5/18

10:10 pm-11:02 am

1 stop9h 52m

$382

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Sat 9/6

4:50 pm-9:30 pm

1 stop7h 40m

San Diego

Thu 9/11

6:55 am-8:00 pm

2 stops10h 05m

$397

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Fri 5/9

6:16 pm-6:00 pm

3 stops26h 44m

San Diego

Tue 5/13

6:00 pm-5:38 pm

2 stops20h 38m

$740

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Tue 4/22

2:33 pm-9:52 am

2 stops22h 19m

San Diego

Sun 4/27

8:44 pm-10:49 pm

3 stops23h 05m

$927

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Fri 5/9

7:16 pm-11:52 am

3 stops43h 36m

San Diego

Tue 5/13

12:37 pm-5:38 pm

3 stops26h 01m

$1,326

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Wed 4/23

4:16 pm-10:07 pm

1 stop8h 51m

$169

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Wed 4/23

1:52 pm-10:42 pm

2 stops11h 50m

$174

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Wed 4/23

6:15 am-8:22 pm

3 stops17h 07m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 12 results
1
2

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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust 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 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.
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 21, 2025.

To ensure you get the cheapest price possible for a flight from Portland, Maine to San Diego, you should look to book at least 66 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, August is the cheapest month in which you can book a flight from Portland, Maine to San Diego (average of $286). Flying from Portland, Maine to San Diego in March is currently the most expensive (average of $366). 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.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 25, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Portland to San Diego have to say. 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.
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Breeze Airways
8.0
Very good
156 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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.

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

    American Airlines, at $337, was found to be the cheapest airline from Portland, Maine to San Diego.Alternate airlines to your destination round-trip include Delta and United Airlines. These flights start at 35% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $169 on American Airlines. Other airlines that offer cheap prices include Delta from $174 and United Airlines from $229 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to San Diego 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 Portland, Maine to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Portland, Maine to San Diego (average of $286). Flying from Portland, Maine to San Diego in March is currently the most expensive (average of $366). 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
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

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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 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$327Average$508FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$333Average$490FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$339Average$567FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$348Average$527FlexibilityNo cancel feeOn-time63%
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