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Cheap flights from San Diego to Portland from $168

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Portland departing on 1/20. 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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Find the cheapest flights from San Diego to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:30 am - 11:59 pmSAN-PWM
14h 29m2 stops
Delta Logo
6:08 am - 6:13 pmPWM-SAN
15h 05m2 stops
$360Delta
Find Deal
Mon, Dec 8 - Tue, Dec 16
American Airlines Logo
10:45 pm - 11:40 amSAN-PWM
9h 55m1 stop
American Airlines Logo
3:34 pm - 9:44 pmPWM-SAN
9h 10m1 stop
$380American Airlines
Find Deal
Mon, Dec 8 - Tue, Dec 16
American Airlines Logo
10:45 pm - 11:40 amSAN-PWM
9h 55m1 stop
American Airlines Logo
7:00 am - 6:25 pmPWM-SAN
14h 25m2 stops
$381American Airlines
Find Deal
Mon, Dec 8 - Tue, Dec 16
American Airlines Logo
6:35 am - 6:03 pmSAN-PWM
8h 28m1 stop
American Airlines Logo
12:43 pm - 6:55 pmPWM-SAN
9h 12m1 stop
$406American Airlines
Find Deal
Sun, Feb 15 - Mon, Feb 23
American Airlines Logo
6:35 am - 6:03 pmSAN-PWM
8h 28m1 stop
American Airlines Logo
10:57 am - 8:25 pmPWM-SAN
12h 28m2 stops
$411American Airlines
Find Deal
Sun, Feb 15 - Mon, Feb 23
American Airlines Logo
7:30 pm - 10:27 amSAN-PWM
11h 57m2 stops
American Airlines Logo
10:57 am - 8:25 pmPWM-SAN
12h 28m2 stops
$416American Airlines
Find Deal
Sun, Feb 15 - Mon, Feb 23
Delta Logo
1:30 pm - 12:20 amSAN-PWM
7h 50m1 stop
Delta Logo
6:00 am - 11:04 pmPWM-SAN
20h 04m2 stops
$420Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Delta Logo
11:05 am - 11:04 pmSAN-PWM
8h 59m1 stop
Delta Logo
6:00 am - 11:04 pmPWM-SAN
20h 04m2 stops
$430Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Delta Logo
11:05 am - 11:04 pmSAN-PWM
8h 59m1 stop
Delta Logo
6:30 am - 12:17 pmPWM-SAN
8h 47m1 stop
$433Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Delta Logo
11:05 am - 11:04 pmSAN-PWM
8h 59m1 stop
Delta Logo
12:40 pm - 10:48 pmPWM-SAN
13h 08m2 stops
$438Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4

Delta flights from San Diego to Portland, Maine

Our best Delta deals on San Diego to Portland, Maine flight tickets
Delta
Dec 8
SAN6:30 amSan Diego
14h 29m
2 stops
PWM11:59 pmPortland
Dec 16
PWM6:08 amPortland
15h 05m
2 stops
SAN6:13 pmSan Diego
$360
Find similar
Delta
Mar 3
SAN1:30 pmSan Diego
7h 50m
1 stop
PWM12:20 amPortland
Mar 4
PWM6:00 amPortland
20h 04m
2 stops
SAN11:04 pmSan Diego
$420
Find similar
Delta
Mar 3
SAN11:05 amSan Diego
8h 59m
1 stop
PWM11:04 pmPortland
Mar 4
PWM6:00 amPortland
20h 04m
2 stops
SAN11:04 pmSan Diego
$430
Find similar

United Airlines flights from San Diego to Portland, Maine

Our best United Airlines deals on San Diego to Portland, Maine flight tickets
United Airlines
Dec 22
SAN9:30 pmSan Diego
9h 14m
1 stop
PWM9:44 amPortland
Jan 7
PWM11:00 amPortland
12h 47m
2 stops
SAN8:47 pmSan Diego
$485
Find similar
United Airlines
Dec 22
SAN6:55 pmSan Diego
11h 49m
2 stops
PWM9:44 amPortland
Jan 7
PWM2:31 pmPortland
12h 44m
2 stops
SAN12:15 amSan Diego
$490
Find similar
United Airlines
Dec 22
SAN9:30 pmSan Diego
9h 14m
1 stop
PWM9:44 amPortland
Jan 8
PWM4:10 pmPortland
9h 23m
1 stop
SAN10:33 pmSan Diego
$493
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Portland, Maine 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 November 12, 2025.
Use the filters below to find and compare flights from San Diego to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 12/8

6:30 am-11:59 pm

2 stops14h 29m

Portland

Tue 12/16

6:08 am-6:13 pm

2 stops15h 05m

$360

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 12/8

10:45 pm-11:40 am

1 stop9h 55m

Portland

Tue 12/16

3:34 pm-9:44 pm

1 stop9h 10m

$380

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Mon 12/8

10:45 pm-11:40 am

1 stop9h 55m

Portland

Tue 12/16

7:00 am-6:25 pm

2 stops14h 25m

$381

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sun 2/15

6:35 am-6:03 pm

1 stop8h 28m

Portland

Mon 2/23

12:43 pm-6:55 pm

1 stop9h 12m

$406

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sun 2/15

6:35 am-6:03 pm

1 stop8h 28m

Portland

Mon 2/23

10:57 am-8:25 pm

2 stops12h 28m

$411

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Sun 2/15

7:30 pm-10:27 am

2 stops11h 57m

Portland

Mon 2/23

10:57 am-8:25 pm

2 stops12h 28m

$416

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 3/3

1:30 pm-12:20 am

1 stop7h 50m

Portland

Wed 3/4

6:00 am-11:04 pm

2 stops20h 04m

$420

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 3/3

11:05 am-11:04 pm

1 stop8h 59m

Portland

Wed 3/4

6:00 am-11:04 pm

2 stops20h 04m

$430

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 3/3

11:05 am-11:04 pm

1 stop8h 59m

Portland

Wed 3/4

6:30 am-12:17 pm

1 stop8h 47m

$433

San DiegoPortland

SAN - PWM

SANPWM

San Diego

Tue 3/3

11:05 am-11:04 pm

1 stop8h 59m

Portland

Wed 3/4

12:40 pm-10:48 pm

2 stops13h 08m

$438

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 Portland from

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

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 Portland, Maine?

The cheapest month to fly to Portland, Maine from San Diego is in October. Flight prices, which tend to average around $353, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $396.

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from San Diego is on a Saturday. momondo users have found tickets for Saturday departures for as low as $461. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from San Diego because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $665.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the evening is the cheapest time of day to fly from San Diego to Portland, Maine when you can find flight prices for as low as $491. Flying to Portland, Maine in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $587. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Portland, Maine?

You are more likely to see cheaper flights to Portland, Maine from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $492 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from San Diego for as low as $333 on momondo.

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

As of November 2025, prices for San Diego to Portland, Maine flights are approximately 12% cheaper when compared to flights at the same time last year.

When to book flights from San Diego to Portland, Maine

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

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

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

Direct flights

None
There are no direct flights from San Diego to Portland, Maine. There are no popular flight routes from San Diego to Portland, Maine.
Search flight deals

  • How far is San Diego to Portland by plane?

    Portland is 2617.3 mi away from San Diego. Flights usually cover this in 7h 15m, depending on flying conditions and air traffic around both airports.

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

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

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

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

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

    The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from San Diego to Portland, Maine

Compare and see reviews for airlines that fly from San Diego to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $312Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
DeltaPriceFrom $312Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $333Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
SouthwestPriceFrom $361Free CancellationRating
8.0
4,235 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Lewiston
Freeport
Brunswick
Bartlett
Auburn
Gorham
Windham
Intervale
Oxford
Bath
Georgetown
Falmouth
Tamworth

Why use momondo?

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

It is quick and easy to find San Diego to Portland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portland that suits you.

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

All flight searches from San Diego to Portland on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Portland from San Diego. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of San Diego to Portland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Portland, Maine trip

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