$133+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
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 May 7, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $297 (Delta) |
One-way from | $133 (American Airlines) |
Popular in | April |
Cheapest in | January |
Average price | $500 |
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 May 7, 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 May 7, 2025.
This American Airlines deal was found by Cheapflights users on 5/7. 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.
This Delta deal was found by Cheapflights users on 5/7. 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.
This United Airlines deal was found by Cheapflights users on 5/6. 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.
This Mytrip deal was found by Cheapflights users on 5/6. 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.
This Southwest deal was found by Cheapflights users on 5/7. 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.
This Alaska Airlines deal was found by Cheapflights users on 5/7. 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.
This KAYAK deal was found by Cheapflights users on 5/7. 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.
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 May 7, 2025.
Use the filters below to find and compare flights from Portland to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 6/11
12:55 pm-9:19 pm
1 stop11h 24m
San Diego
Mon 6/16
1:00 pm-12:46 am
1 stop8h 46m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Mon 6/2
12:08 pm-11:59 pm
1 stop14h 51m
San Diego
Fri 6/6
9:13 pm-11:08 am
1 stop10h 55m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Mon 6/2
4:43 pm-11:46 pm
2 stops10h 03m
San Diego
Fri 6/6
11:15 am-11:57 pm
2 stops9h 42m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Mon 6/2
11:50 am-7:13 am
3 stops22h 23m
San Diego
Fri 6/6
5:43 pm-11:53 am
2 stops15h 10m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 7/13
5:40 am-1:55 pm
2 stops11h 15m
San Diego
Wed 7/16
9:40 am-11:25 pm
2 stops10h 45m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Tue 5/20
2:05 pm-7:39 am
2 stops20h 34m
San Diego
Sat 5/24
4:00 pm-10:45 pm
3 stops27h 45m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sun 7/13
8:52 pm-11:56 am
3 stops42h 04m
San Diego
Thu 7/17
12:48 pm-2:07 pm
2 stops22h 19m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Tue 7/15
6:25 pm-12:09 am
1 stop8h 44m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 7/5
6:30 am-11:50 am
1 stop8h 20m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 7/24
4:56 pm-11:44 pm
2 stops9h 48m
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 May.
| 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.
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 May 2, 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 May 7, 2025.
Food
Comfort
Overall
Boarding
Crew
Entertainment
Reviews
Dena,Dec 2024
LAS - BDL
Food
Comfort
Overall
Boarding
Crew
Entertainment
Reviews
Dena,Dec 2024
LAS - BDL
Food
Comfort
Overall
Boarding
Crew
Entertainment
Reviews
Dena,Dec 2024
LAS - BDL
Food
Comfort
Overall
Boarding
Crew
Entertainment
Reviews
Dena,Dec 2024
LAS - BDL
Food
Comfort
Overall
Boarding
Crew
Entertainment
Reviews
Dena,Dec 2024
LAS - BDL
Food
Comfort
Overall
Boarding
Crew
Entertainment
Reviews
Dena,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.
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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 May 7, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$324 | Average$466 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$457 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$339 | Average$538 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$348 | Average$524 | FlexibilityNo cancel fee | On-time63% |