$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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SAN
Apr 20 — Apr 271
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 15, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $318 (Delta) |
One-way from | $157 (Delta) |
Popular in | July |
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 15, 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 15, 2025.
This Delta deal was found by Cheapflights users on 4/13. 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 5/132:30 pmPWM - SAN
1 stop8h 57mDelta
Tue 5/2010:01 amSAN - PWM
2 stops11h 13mDelta
Deal found 4/13![Delta logo]()
$318
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/207:45 amPWM - SAN
1 stop8h 51mAmerican Airlines
Sat 5/2410:45 pmSAN - PWM
1 stop10h 49mAmerican Airlines
Deal found 4/14![American Airlines logo]()
$346
This United Airlines deal was found by Cheapflights users on 4/14. 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 9/62:14 pmPWM - SAN
2 stops11h 16mUnited Airlines
Thu 9/117:10 pmSAN - PWM
2 stops11h 53mUnited Airlines
Deal found 4/14![United Airlines logo]()
$464
This Southwest deal was found by Cheapflights users on 4/14. 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 5/45:40 amPWM - SAN
2 stops11h 10mSouthwest
Wed 5/710:00 amSAN - PWM
2 stops9h 30mSouthwest
Deal found 4/14![Southwest logo]()
$480
This Mytrip deal was found by Cheapflights users on 4/14. 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.
Thu 6/2612:40 pmPWM - SAN
2 stops32h 46mMultiple Airlines
Wed 7/26:15 amSAN - PWM
3 stops34h 57mMultiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$499
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Sat 9/64:18 pmPWM - SAN
2 stops20h 54mAlaska Airlines
Thu 9/119:18 pmSAN - PWM
3 stops22h 10mAlaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$698
This KAYAK deal was found by Cheapflights users on 4/14. 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.
Wed 8/1312:38 pmPWM - SAN
3 stops26h 18mBreeze Airways
Mon 8/1812:58 pmSAN - PWM
3 stops51h 29mBreeze Airways
Deal found 4/14![Breeze Airways logo]()
$1,031
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 15, 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 5/13
2:30 pm-8:27 pm
1 stop8h 57m
San Diego
Tue 5/20
10:01 am-12:14 am
2 stops11h 13m
$318
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Tue 5/20
7:45 am-1:36 pm
1 stop8h 51m
San Diego
Sat 5/24
10:45 pm-12:34 pm
1 stop10h 49m
$346
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 9/6
2:14 pm-10:30 pm
2 stops11h 16m
San Diego
Thu 9/11
7:10 pm-10:03 am
2 stops11h 53m
$464
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 5/4
5:40 am-1:50 pm
2 stops11h 10m
San Diego
Wed 5/7
10:00 am-10:30 pm
2 stops9h 30m
$480
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 6/26
12:40 pm-6:26 pm
2 stops32h 46m
San Diego
Wed 7/2
6:15 am-8:12 pm
3 stops34h 57m
$499
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 9/6
4:18 pm-10:12 am
2 stops20h 54m
San Diego
Thu 9/11
9:18 pm-10:28 pm
3 stops22h 10m
$698
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 8/13
12:38 pm-11:56 am
3 stops26h 18m
San Diego
Mon 8/18
12:58 pm-7:27 pm
3 stops51h 29m
$1,031
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 5/7
6:35 am-12:03 pm
1 stop8h 28m
$157
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 6/1
3:15 pm-7:13 am
3 stops42h 58m
$176
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 8/10
5:35 am-11:20 am
1 stop8h 45m
$284
Showing 1-10 of 12 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 11, 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 15, 2025.
See what other customers who have flown with Breeze Airways, Alaska Airlines and Southwest 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.
Food
6.7
Comfort
8.2
Overall
8.1
Boarding
8.3
Entertainment
6.6
Crew
8.8
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Food
6.7
Comfort
8.2
Overall
8.1
Boarding
8.3
Entertainment
6.6
Crew
8.8
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Food
6.7
Comfort
8.2
Overall
8.1
Boarding
8.3
Entertainment
6.6
Crew
8.8
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Food
6.7
Comfort
8.2
Overall
8.1
Boarding
8.3
Entertainment
6.6
Crew
8.8
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Food
6.7
Comfort
8.2
Overall
8.1
Boarding
8.3
Entertainment
6.6
Crew
8.8
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Food
6.7
Comfort
8.2
Overall
8.1
Boarding
8.3
Entertainment
6.6
Crew
8.8
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
Borrego Springs
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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 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$327 | Average$494 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$332 | Average$489 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$339 | Average$549 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$348 | Average$522 | FlexibilityNo cancel fee | On-time63% |