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Cheap flights from Portland, Maine to San Diego from $154

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 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland, Maine to San Diego

Cheap round-trip flights

Delta Logo
12:53 pm - 6:04 pmPWM-SAN
8h 11m1 stop
Delta Logo
10:55 am - 12:11 amSAN-PWM
10h 16m1 stop
$313Delta
Find Deal
Sat, Sep 6 - Thu, Sep 11
Delta Logo
11:28 am - 9:15 pmPWM-SAN
12h 47m2 stops
Delta Logo
1:15 pm - 12:34 amSAN-PWM
8h 19m1 stop
$318Delta
Find Deal
Sat, Sep 6 - Thu, Sep 11
Delta Logo
6:00 am - 1:53 pmPWM-SAN
10h 53m2 stops
Delta Logo
9:30 pm - 12:59 pmSAN-PWM
12h 29m2 stops
$323Delta
Find Deal
Wed, Aug 13 - Mon, Aug 18
American Airlines Logo
6:00 am - 11:20 amPWM-SAN
8h 20m1 stop
American Airlines Logo
10:54 pm - 10:41 amSAN-PWM
8h 47m1 stop
$325American Airlines
Find Deal
Fri, Aug 15 - Tue, Aug 19
American Airlines Logo
4:10 pm - 9:16 pmPWM-SAN
8h 06m1 stop
American Airlines Logo
10:45 pm - 11:38 amSAN-PWM
9h 53m1 stop
$326American Airlines
Find Deal
Wed, Aug 13 - Mon, Aug 18
American Airlines Logo
9:08 am - 2:25 pmPWM-SAN
8h 17m1 stop
American Airlines Logo
9:45 am - 11:44 pmSAN-PWM
10h 59m2 stops
$330American Airlines
Find Deal
Fri, Aug 15 - Tue, Aug 19
American Airlines Logo
6:01 am - 2:03 pmPWM-SAN
11h 02m1 stop
American Airlines Logo
10:38 pm - 11:49 amSAN-PWM
10h 11m1 stop
$332American Airlines
Find Deal
Mon, Sep 15 - Sun, Sep 21
Southwest Logo
5:50 am - 3:30 pmPWM-SAN
12h 40m1 stop
Southwest Logo
10:20 am - 11:20 pmSAN-PWM
10h 00m2 stops
$348Southwest
Find Deal
Fri, Aug 15 - Fri, Aug 22
Southwest Logo
5:25 pm - 10:50 pmPWM-SAN
8h 25m1 stop
Southwest Logo
9:45 pm - 11:10 amSAN-PWM
10h 25m1 stop
$356Southwest
Find Deal
Thu, Nov 6 - Sun, Nov 9
United Airlines Logo
6:00 am - 4:02 pmPWM-SAN
13h 02m2 stops
United Airlines Logo
6:47 pm - 9:19 amSAN-PWM
11h 32m2 stops
$435United Airlines
Find Deal
Sat, Nov 1 - Sun, Nov 9

American Airlines flights from Portland, Maine to San Diego

Our best American Airlines deals on Portland, Maine to San Diego flight tickets
American Airlines
Aug 15
PWM6:00 amPortland
8h 20m
1 stop
SAN11:20 amSan Diego
Aug 19
SAN10:54 pmSan Diego
8h 47m
1 stop
PWM10:41 amPortland
$325
Find similar
American Airlines
Aug 13
PWM4:10 pmPortland
8h 06m
1 stop
SAN9:16 pmSan Diego
Aug 18
SAN10:45 pmSan Diego
9h 53m
1 stop
PWM11:38 amPortland
$326
Find similar
American Airlines
Aug 15
PWM9:08 amPortland
8h 17m
1 stop
SAN2:25 pmSan Diego
Aug 19
SAN9:45 amSan Diego
10h 59m
2 stops
PWM11:44 pmPortland
$330
Find similar

Delta flights from Portland, Maine to San Diego

Our best Delta deals on Portland, Maine to San Diego flight tickets
Delta
Sep 6
PWM12:53 pmPortland
8h 11m
1 stop
SAN6:04 pmSan Diego
Sep 11
SAN10:55 amSan Diego
10h 16m
1 stop
PWM12:11 amPortland
$313
Find similar
Delta
Sep 6
PWM11:28 amPortland
12h 47m
2 stops
SAN9:15 pmSan Diego
Sep 11
SAN1:15 pmSan Diego
8h 19m
1 stop
PWM12:34 amPortland
$318
Find similar
Delta
Aug 13
PWM6:00 amPortland
10h 53m
2 stops
SAN1:53 pmSan Diego
Aug 18
SAN9:30 pmSan Diego
12h 29m
2 stops
PWM12:59 pmPortland
$323
Find similar

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 cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of January, then departing from Portland, Maine during the month September is also very affordable. Most momondo users find prices during this month for around $426.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Portland, Maine to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $472. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $809. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $476. Flights in the morning are often more expensive with an average ticket price of $543.

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 $506 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 $368 on momondo.

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

As of July 2025, 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

Best Price Found

$154

Fastest flight time

7h 56m

Direct flights

None

Airports in San Diego

1 airport
The best one-way flight to San Diego from Portland, Maine in the past 72 hours is $154. The best round-trip flight deal from Portland, Maine to San Diego found on momondo in the last 72 hours is $313.
The fastest flight from Portland, Maine to San Diego takes 7h 56m
There are no direct flights from Portland, Maine to San Diego. Popular non-direct route for this connection is Portland Airport - San Diego Airport.
There is 1 airport near San Diego: San Diego (SAN)
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  • 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 7h 56m.

  • 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
American AirlinesPriceFrom $318Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $331Free CancellationRating
8.0
7,967 reviews
Search Delta flights
United AirlinesPriceFrom $350Free CancellationRating
7.4
8,876 reviews
Search United Airlines flights
SouthwestPriceFrom $366Free CancellationRating
8.0
4,235 reviews
Search Southwest 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
La Mesa
Imperial Beach
San Ysidro
Poway
Borrego Springs
Lemon Grove
Alpine
Santee

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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