$154+ 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 9/26. 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 May, 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 June 12, 2025.
Round-trip from | $297 (United Airlines) |
|---|---|
One-way from | $154 (JetBlue) |
Popular in | June |
Cheapest in | January |
Average price | $619 |
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 June 12, 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 June 12, 2025.
This United Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines deal was found by Cheapflights users on 6/12. 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 6/11. 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 JetBlue deal was found by Cheapflights users on 6/12. 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.
This Southwest deal was found by Cheapflights users on 6/12. 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 Mytrip deal was found by Cheapflights users on 6/10. 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 Alaska Airlines deal was found by Cheapflights users on 6/11. 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 6/11. 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 June 12, 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 8/13
5:35 am-10:55 am
1 stop8h 20m
San Diego
Wed 8/20
10:30 pm-9:24 am
1 stop7h 54m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 8/13
8:00 am-3:25 pm
2 stops10h 25m
San Diego
Mon 8/18
6:15 am-5:46 pm
1 stop8h 31m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Sat 8/16
6:00 am-12:28 pm
1 stop9h 28m
San Diego
Wed 8/20
12:09 pm-12:03 am
1 stop8h 54m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Fri 9/5
2:17 pm-7:30 pm
1 stop8h 13m
San Diego
Mon 9/8
10:10 am-10:02 pm
1 stop8h 52m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Fri 8/8
12:30 pm-7:10 pm
2 stops9h 40m
San Diego
Mon 8/11
9:10 pm-9:50 am
1 stop9h 40m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 7/17
12:58 pm-4:31 pm
1 stop30h 33m
San Diego
Sun 7/20
5:13 pm-12:21 pm
2 stops16h 08m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 8/13
4:10 pm-8:53 am
2 stops19h 43m
San Diego
Wed 8/20
10:59 am-10:41 am
3 stops20h 42m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Thu 8/7
3:17 pm-10:42 am
1 stop22h 25m
San Diego
Sun 8/10
12:48 pm-2:07 pm
2 stops22h 19m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Fri 9/26
2:17 pm-7:30 pm
1 stop8h 13m
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Tue 7/1
6:00 am-1:58 pm
1 stop10h 58m
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 June 9, 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 June 12, 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.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$319 | Average$453 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$455 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$346 | Average$527 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$348 | Average$518 | FlexibilityNo cancel fee | On-time63% |