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Cheap flights from Portland, Maine to San Diego from $197

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to San Diego departing on 4/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Portland, Maine to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
7:30 am - 8:05 pm
PWM
-
SAN
15h 35m
1 stop
JetBlue Logo
10:25 am - 11:03 pm
SAN
-
PWM
9h 38m
1 stop
$372JetBlue
Tue, Apr 28 - Tue, May 5
JetBlue Logo
7:20 am - 2:14 pm
PWM
-
SAN
9h 54m
1 stop
JetBlue Logo
10:25 am - 11:03 pm
SAN
-
PWM
9h 38m
1 stop
$375JetBlue
Sat, May 9 - Tue, May 12
United Airlines Logo
2:12 pm - 8:46 pm
PWM
-
SAN
9h 34m
1 stop
United Airlines Logo
11:00 am - 11:59 pm
SAN
-
PWM
9h 59m
2 stops
$404United Airlines
Tue, Apr 28 - Tue, May 5
JetBlue Logo
7:20 am - 2:14 pm
PWM
-
SAN
9h 54m
1 stop
JetBlue Logo
10:25 am - 11:03 pm
SAN
-
PWM
9h 38m
1 stop
$409JetBlue
Sat, May 9 - Tue, May 12
American Airlines Logo
3:02 pm - 10:49 pm
PWM
-
SAN
10h 47m
1 stop
American Airlines Logo
9:45 pm - 11:15 am
SAN
-
PWM
10h 30m
1 stop
$410American Airlines
Thu, Apr 30 - Tue, May 5
American Airlines Logo
10:50 am - 6:46 pm
PWM
-
SAN
10h 56m
1 stop
American Airlines Logo
9:12 am - 11:27 pm
SAN
-
PWM
11h 15m
2 stops
$415American Airlines
Thu, Apr 30 - Tue, May 5
Southwest Logo
5:40 am - 10:55 am
PWM
-
SAN
8h 15m
1 stop
Southwest Logo
12:45 pm - 11:10 pm
SAN
-
PWM
7h 25m
1 stop
$417Southwest
Sat, May 2 - Sat, May 9
Delta Logo
2:51 pm - 8:47 pm
PWM
-
SAN
8h 56m
1 stop
Delta Logo
1:23 pm - 12:46 am
SAN
-
PWM
8h 23m
1 stop
$419Delta
Thu, Apr 30 - Tue, May 5
Southwest Logo
12:45 pm - 9:25 pm
PWM
-
SAN
11h 40m
2 stops
Southwest Logo
12:45 pm - 11:10 pm
SAN
-
PWM
7h 25m
1 stop
$422Southwest
Sat, May 2 - Sat, May 9
Delta Logo
2:51 pm - 8:47 pm
PWM
-
SAN
8h 56m
1 stop
Delta Logo
6:15 am - 11:24 pm
SAN
-
PWM
14h 09m
2 stops
$424Delta
Thu, Apr 30 - Tue, May 5

JetBlue flights from Portland, Maine to San Diego

Our best JetBlue deals on Portland, Maine to San Diego flight tickets
JetBlue
Apr 28
PWM7:30 amPortland
15h 35m
1 stop
SAN8:05 pmSan Diego
May 5
SAN10:25 amSan Diego
9h 38m
1 stop
PWM11:03 pmPortland
$372
JetBlue
May 9
PWM7:20 amPortland
9h 54m
1 stop
SAN2:14 pmSan Diego
May 12
SAN10:25 amSan Diego
9h 38m
1 stop
PWM11:03 pmPortland
$375
JetBlue
May 9
PWM7:20 amPortland
9h 54m
1 stop
SAN2:14 pmSan Diego
May 12
SAN10:25 amSan Diego
9h 38m
1 stop
PWM11:03 pmPortland
$409

American Airlines flights from Portland, Maine to San Diego

Our best American Airlines deals on Portland, Maine to San Diego flight tickets
American Airlines
Apr 30
PWM3:02 pmPortland
10h 47m
1 stop
SAN10:49 pmSan Diego
May 5
SAN9:45 pmSan Diego
10h 30m
1 stop
PWM11:15 amPortland
$410
American Airlines
Apr 30
PWM10:50 amPortland
10h 56m
1 stop
SAN6:46 pmSan Diego
May 5
SAN9:12 amSan Diego
11h 15m
2 stops
PWM11:27 pmPortland
$415
American Airlines
May 29
PWM3:05 pmPortland
9h 29m
2 stops
SAN9:34 pmSan Diego
Jun 1
SAN6:15 amSan Diego
9h 14m
1 stop
PWM6:29 pmPortland
$459

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from Portland, Maine to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Tue 4/28

7:30 am-8:05 pm

1 stop15h 35m

San Diego

Tue 5/5

10:25 am-11:03 pm

1 stop9h 38m

$372

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Sat 5/9

7:20 am-2:14 pm

1 stop9h 54m

San Diego

Tue 5/12

10:25 am-11:03 pm

1 stop9h 38m

$375

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Tue 4/28

2:12 pm-8:46 pm

1 stop9h 34m

San Diego

Tue 5/5

11:00 am-11:59 pm

2 stops9h 59m

$404

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Sat 5/9

7:20 am-2:14 pm

1 stop9h 54m

San Diego

Tue 5/12

10:25 am-11:03 pm

1 stop9h 38m

$409

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Thu 4/30

3:02 pm-10:49 pm

1 stop10h 47m

San Diego

Tue 5/5

9:45 pm-11:15 am

1 stop10h 30m

$410

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Thu 4/30

10:50 am-6:46 pm

1 stop10h 56m

San Diego

Tue 5/5

9:12 am-11:27 pm

2 stops11h 15m

$415
Quickest round-trip

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Sat 5/2

5:40 am-10:55 am

1 stop8h 15m

San Diego

Sat 5/9

12:45 pm-11:10 pm

1 stop7h 25m

$417

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Thu 4/30

2:51 pm-8:47 pm

1 stop8h 56m

San Diego

Tue 5/5

1:23 pm-12:46 am

1 stop8h 23m

$419

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Sat 5/2

12:45 pm-9:25 pm

2 stops11h 40m

San Diego

Sat 5/9

12:45 pm-11:10 pm

1 stop7h 25m

$422

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Thu 4/30

2:51 pm-8:47 pm

1 stop8h 56m

San Diego

Tue 5/5

6:15 am-11:24 pm

2 stops14h 09m

$424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Portland, Maine to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland, Maine and San Diego?

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of September, then departing from Portland, Maine during the month January is also very affordable. Most momondo users find prices during this month for around $424.

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $513 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Portland, Maine for as low as $375 on momondo.

How have Portland, Maine to San Diego flight prices changed over time?

As of April 2026, prices for Portland, Maine to San Diego flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Portland, Maine to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to San Diego (PWM to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to San Diego

Fastest flight time

8h 15m

Direct flights

None
The fastest flight from Portland, Maine to San Diego takes 8h 15m
There are no direct flights from Portland, Maine to San Diego. There are no popular flight routes from Portland, Maine to San Diego.
Search flight deals

  • How far is Portland to San Diego by plane?

    The distance between Portland and San Diego is about 2617.3 mi. In terms of flight time, this usually takes a little over 8h 15m.

  • When did momondo last update prices for flights from Portland Airport to San Diego Airport?

    Prices for flights from Portland Airport to San Diego Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to San Diego Airport?

  • How old do you have to be to fly from Portland Airport to San Diego Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland, Maine to San Diego?

Best airlines flying from Portland, Maine to San Diego

Compare and see reviews for airlines that fly from Portland, Maine to San Diego with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $311Free CancellationRating
7.9
8,368 reviews
Search Delta flights
American AirlinesPriceFrom $318Free CancellationRating
7.1
11,544 reviews
Search American Airlines flights
SouthwestPriceFrom $325Free CancellationRating
8.0
4,335 reviews
Search Southwest flights
United AirlinesPriceFrom $350Free CancellationRating
7.4
9,529 reviews
Search United Airlines flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
Poway
San Ysidro
La Mesa
Imperial Beach
Borrego Springs
Alpine
Santee
Lemon Grove

Why use momondo?

Why should I use momondo to find a flight deal from Portland to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to San Diego with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Diego from Portland with this policy.

How can momondo help me find flights from Portland to San Diego?

Once all potential Portland to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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