HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$149+ Cheap flights from San Diego to Portland, ME (SAN - PWM)

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — PWM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Portland 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 San Diego to Portland are usually found in February or September, booked 90 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

Cheap flight deals from San Diego to Portland

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Portland (PWM). 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

$149
(American Airlines)

Popular in

November

Cheapest in

February

Average price

$452
From San Diego to Portland
Search Deals
One-way flight from San Diego to Portland
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from San Diego to Portland

Cheapest flights from San Diego to Portland
Explore the most affordable flight options available from San Diego to Portland. 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 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:11 pmSAN - PWM
1 stop8h 13mUnited Airlines
Wed 9/106:00 amPWM - SAN
1 stop9h 50mUnited Airlines
Deal found 6/10$297
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:00 amSAN - PWM
1 stop8h 06mDelta
Wed 8/136:31 amPWM - SAN
1 stop8h 16mDelta
Deal found 6/10$306
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:10 amSAN - PWM
1 stop8h 52mJetBlue
Thu 9/252:17 pmPWM - SAN
1 stop8h 13mJetBlue
Deal found 6/10$314
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1110:54 pmSAN - PWM
1 stop8h 47mAmerican Airlines
Fri 8/229:03 amPWM - SAN
1 stop9h 32mAmerican Airlines
Deal found 6/11$334
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:10 pmSAN - PWM
1 stop9h 40mSouthwest
Sun 10/55:30 amPWM - SAN
1 stop8h 15mSouthwest
Deal found 6/10$368
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.
Sat 7/1210:50 amSAN - PWM
3 stops45h 45mMultiple Airlines
Fri 7/1812:40 pmPWM - SAN
2 stops24h 15mMultiple Airlines
Deal found 6/10$440
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:10 pmSAN - PWM
3 stops23h 30mAlaska Airlines
Mon 9/293:56 pmPWM - SAN
2 stops23h 56mAlaska Airlines
Deal found 6/10$592

Cheapflights Fare Finder

Customize your flight search to find flights from San Diego to Portland 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 San Diego to Portland that are best for you.

Fly from

San Diego

Fly to

Portland

Route

Depart

Return

Price

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Thu 9/4

10:11 pm-9:24 am

1 stop8h 13m

Portland

Wed 9/10

6:00 am-12:50 pm

1 stop9h 50m

$297

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sat 8/9

11:00 am-10:06 pm

1 stop8h 06m

Portland

Wed 8/13

6:31 am-11:47 am

1 stop8h 16m

$306

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Fri 9/12

10:10 am-10:02 pm

1 stop8h 52m

Portland

Thu 9/25

2:17 pm-7:30 pm

1 stop8h 13m

$314

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 8/11

10:54 pm-10:41 am

1 stop8h 47m

Portland

Fri 8/22

9:03 am-3:35 pm

1 stop9h 32m

$334

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 9/30

9:10 pm-9:50 am

1 stop9h 40m

Portland

Sun 10/5

5:30 am-10:45 am

1 stop8h 15m

$368

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sat 7/12

10:50 am-11:35 am

3 stops45h 45m

Portland

Fri 7/18

12:40 pm-9:55 am

2 stops24h 15m

$440

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Thu 9/25

6:10 pm-8:40 pm

3 stops23h 30m

Portland

Mon 9/29

3:56 pm-12:52 pm

2 stops23h 56m

$592

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 8/4

10:45 pm-11:32 am

1 stop9h 47m

$149

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 8/4

8:44 pm-10:07 am

2 stops10h 23m

$154

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sat 9/13

7:30 pm-12:54 pm

2 stops14h 24m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 16 results
1
2

Best time to book a flight from San Diego to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from San Diego 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 San Diego to Portland

How far ahead should I book a flight from San Diego to Portland, Maine?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Portland. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from San Diego to Portland, Maine, you should look to book at least 90 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 San Diego to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from San Diego to Portland, Maine (average of $296). Flying from San Diego to Portland, Maine in July is currently the most expensive (average of $394). 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.

What is the cheapest time of day to fly from SAN to PWM?

Find hourly flight availability from San Diego to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 17% on flights from San Diego to Portland, Maine by exploring options for tickets in the afternoon.

Rainfall in Portland by month

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

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

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

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated June 12, 2025.
Read reviews from past customers who have flown Breeze Airways, Alaska Airlines and Southwest from San Diego to Portland. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Food

6.7

Overall

8.1

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Food

6.7

Overall

8.1

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Alaska Airlines
8.0
Very good
10,000 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Food

6.7

Overall

8.1

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Food

6.7

Overall

8.1

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Delta
8.0
Very good
7,950 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Food

6.7

Overall

8.1

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
United Airlines
7.4
Good
8,790 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Comfort

8.2

Food

6.7

Overall

8.1

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from San Diego to Portland. 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 San Diego to Portland, Maine round-trip?

    Currently priced at $297, United Airlines will fly you from San Diego to Portland, Maine and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and JetBlue - these airlines can fly you to your destination from $306 and $314, respectively. You may be able to fly from San Diego to Portland, Maine for 40% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $149 on American Airlines. Other airlines that offer cheap prices include United Airlines from $154 and Delta from $163 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Diego to Portland, Maine (average of $296). Flying from San Diego to Portland, Maine in July is currently the most expensive (average of $394). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
North Conway
Bath
Brunswick
Auburn
Conway
Lewiston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Boston flights
San Francisco to Boston flights
San Diego to Boston flights
Ontario to Boston flights
Burbank to Boston flights
Santa Ana to Boston flights
Las Vegas to Boston flights
San Jose to Boston flights
Sacramento to Boston flights
San Francisco to Portland flights
Oakland to Boston flights
Long Beach to Boston flights
Los Angeles to Portland flights
Reno to Boston flights
Palm Springs to Boston flights
Fresno to Boston flights
San Francisco to Bangor flights
Los Angeles to Bangor flights
Las Vegas to Bangor flights
Ontario to Portland flights
San Luis Obispo to Boston flights
Sacramento to Portland flights
Santa Barbara to Boston flights
Monterey to Boston flights
Ontario to Bangor flights
Las Vegas to Portland flights
San Jose to Bangor flights
San Jose to Portland flights
Medford to Boston flights
Reno to Portland flights
San Diego to Bangor flights
Santa Ana to Portland flights
Arcata to Boston flights
Los Angeles to Bar Harbor flights
Santa Barbara to Portland flights
Monterey to Portland flights
Burbank to Portland flights
Santa Ana to Bangor flights
Redding to Boston flights
Oakland to Portland flights
Santa Rosa to Boston flights
Bakersfield to Boston flights
Long Beach to Portland flights
Sacramento to Bangor flights
Los Angeles to Augusta flights
Medford to Portland flights
Burbank to Bangor flights
Los Angeles to Rockland flights
Palm Springs to Portland flights

Top 4 airlines flying from San Diego to Portland

Discover the top 4 airlines that operate flights from San Diego to Portland. 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.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$301Average$472FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$326Average$442FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$334Average$543FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$421Average$528FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.