$157+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAN
May 5 — May 121
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 April 30, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $313 (American Airlines) |
One-way from | $157 (American Airlines) |
Popular in | April |
Cheapest in | January |
Average price | $579 |
Find flight deals from Portland to San Diego
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 April 30, 2025.
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 April 30, 2025.
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/201:07 pmPWM - SAN
1 stop8h 22mAmerican Airlines
Sat 5/2410:45 pmSAN - PWM
1 stop10h 49mAmerican Airlines
Deal found 4/29![American Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 4/28. 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 5/205:30 amPWM - SAN
1 stop10h 03mDelta
Sat 5/248:25 amSAN - PWM
2 stops12h 34mDelta
Deal found 4/28![Delta logo]()
$318
This United Airlines deal was found by Cheapflights users on 4/29. 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 9/412:15 pmPWM - SAN
1 stop9h 59mUnited Airlines
Tue 9/99:41 pmSAN - PWM
1 stop8h 43mUnited Airlines
Deal found 4/29![United Airlines logo]()
$332
This JetBlue deal was found by Cheapflights users on 4/28. 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.
Sat 9/62:15 pmPWM - SAN
1 stop8h 15mJetBlue
Thu 9/1110:15 amSAN - PWM
1 stop8h 44mJetBlue
Deal found 4/28![JetBlue logo]()
$341
This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2612:40 pmPWM - SAN
1 stop7h 39mSun Country Air
Sun 6/295:31 pmSAN - PWM
1 stop14h 52mSun Country Air
Deal found 4/29![Sun Country Air logo]()
$405
This Southwest deal was found by Cheapflights users on 4/29. 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.
Sun 8/105:35 amPWM - SAN
1 stop8h 45mSouthwest
Wed 8/139:10 pmSAN - PWM
1 stop11h 40mSouthwest
Deal found 4/29![Southwest logo]()
$464
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Sun 5/253:17 pmPWM - SAN
3 stops42h 56mMultiple Airlines
Sun 6/16:58 pmSAN - PWM
2 stops13h 12mMultiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$594
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 9/44:18 pmPWM - SAN
2 stops20h 56mAlaska Airlines
Tue 9/96:10 pmSAN - PWM
3 stops23h 10mAlaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$637
This KAYAK deal was found by Cheapflights users on 4/28. 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.
Mon 6/97:18 pmPWM - SAN
3 stops43h 45mBreeze Airways
Thu 6/1212:48 pmSAN - PWM
2 stops22h 19mBreeze Airways
Deal found 4/28![Breeze Airways logo]()
$944
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 April 30, 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
Tue 5/20
1:07 pm-6:29 pm
1 stop8h 22m
San Diego
Sat 5/24
10:45 pm-12:34 pm
1 stop10h 49m
$313
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Tue 5/20
5:30 am-12:33 pm
1 stop10h 03m
San Diego
Sat 5/24
8:25 am-11:59 pm
2 stops12h 34m
$318
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 9/4
12:15 pm-7:14 pm
1 stop9h 59m
San Diego
Tue 9/9
9:41 pm-9:24 am
1 stop8h 43m
$332
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 9/6
2:15 pm-7:30 pm
1 stop8h 15m
San Diego
Thu 9/11
10:15 am-9:59 pm
1 stop8h 44m
$341
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 6/26
12:40 pm-5:19 pm
1 stop7h 39m
San Diego
Sun 6/29
5:31 pm-11:23 am
1 stop14h 52m
$405
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 8/10
5:35 am-11:20 am
1 stop8h 45m
San Diego
Wed 8/13
9:10 pm-11:50 am
1 stop11h 40m
$464
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 5/25
3:17 pm-7:13 am
3 stops42h 56m
San Diego
Sun 6/1
6:58 pm-11:10 am
2 stops13h 12m
$594
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 9/4
4:18 pm-10:14 am
2 stops20h 56m
San Diego
Tue 9/9
6:10 pm-8:20 pm
3 stops23h 10m
$637
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Mon 6/9
7:18 pm-12:03 pm
3 stops43h 45m
San Diego
Thu 6/12
12:48 pm-2:07 pm
2 stops22h 19m
$944
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 5/21
4:01 pm-9:44 pm
1 stop8h 43m
$157
Showing 1-10 of 16 results
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | 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 eDreams the most. eDreams 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 April 25, 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 49 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 April 30, 2025.
Comfort
8.2
Food
6.7
Entertainment
6.6
Crew
8.8
Boarding
8.3
Overall
8.1
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Comfort
8.2
Food
6.7
Entertainment
6.6
Crew
8.8
Boarding
8.3
Overall
8.1
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Comfort
8.2
Food
6.7
Entertainment
6.6
Crew
8.8
Boarding
8.3
Overall
8.1
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Comfort
8.2
Food
6.7
Entertainment
6.6
Crew
8.8
Boarding
8.3
Overall
8.1
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Comfort
8.2
Food
6.7
Entertainment
6.6
Crew
8.8
Boarding
8.3
Overall
8.1
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Comfort
8.2
Food
6.7
Entertainment
6.6
Crew
8.8
Boarding
8.3
Overall
8.1
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
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 Portland?
Book flights to Portland if you plan to visit one of these locationsEl Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
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Alternative routes for Portland to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
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 April 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$325 | Average$472 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$464 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$339 | Average$546 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$348 | Average$522 | FlexibilityNo cancel fee | On-time63% |