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Cheap flights from Portland to San Diego from $101

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 to San Diego departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:35 pm - 8:12 pm
PDX
-
SAN
2h 37mnonstop
Multiple Airlines Logo
10:29 am - 4:50 pm
SAN
-
PDX
6h 21m1 stop
$160Multiple Airlines
Sat, Feb 14 - Sat, Feb 21
Frontier Logo
11:29 am - 10:13 am
PDX
-
SAN
22h 44m2 stops
Frontier Logo
2:56 pm - 9:49 am
SAN
-
PDX
18h 53m1 stop
$161Frontier
Sun, Jan 18 - Thu, Jan 22
Frontier Logo
12:10 pm - 11:59 pm
PDX
-
SAN
11h 49m1 stop
Frontier Logo
9:16 am - 10:33 am
SAN
-
PDX
25h 17m1 stop
$162Frontier
Sun, Jan 11 - Thu, Jan 15
Alaska Airlines Logo
10:55 am - 3:21 pm
PDX
-
SAN
4h 26m1 stop
Alaska Airlines Logo
6:03 pm - 8:46 pm
SAN
-
PDX
2h 43mnonstop
$165Alaska Airlines
Wed, Jan 21 - Wed, Jan 28
Alaska Airlines Logo
5:35 pm - 8:12 pm
PDX
-
SAN
2h 37mnonstop
Alaska Airlines Logo
10:15 am - 4:35 pm
SAN
-
PDX
6h 20m1 stop
$166Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
Alaska Airlines Logo
2:30 pm - 5:05 pm
PDX
-
SAN
2h 35mnonstop
Alaska Airlines Logo
12:45 pm - 4:52 pm
SAN
-
PDX
4h 07m1 stop
$167Alaska Airlines
Tue, Mar 31 - Sat, Apr 4
Frontier Logo
11:28 am - 12:08 am
PDX
-
SAN
12h 40m2 stops
Frontier Logo
2:56 pm - 9:49 am
SAN
-
PDX
18h 53m1 stop
$168Frontier
Thu, Jan 29 - Thu, Feb 5
United Airlines Logo
1:35 pm - 8:49 pm
PDX
-
SAN
7h 14m1 stop
United Airlines Logo
11:10 am - 6:10 pm
SAN
-
PDX
7h 00m1 stop
$172United Airlines
Sat, Feb 7 - Tue, Feb 10
Frontier Logo
11:29 am - 10:13 am
PDX
-
SAN
22h 44m2 stops
Frontier Logo
10:51 am - 11:18 am
SAN
-
PDX
24h 27m1 stop
$173Frontier
Sun, Jan 18 - Sun, Jan 25
Frontier Logo
11:59 am - 12:15 am
PDX
-
SAN
12h 16m1 stop
Frontier Logo
2:57 pm - 7:23 am
SAN
-
PDX
16h 26m1 stop
$174Frontier
Thu, Jan 15 - Sat, Jan 17

Frontier flights from Portland to San Diego

Our best Frontier deals on Portland to San Diego flight tickets
Frontier
Jan 18
PDX11:29 amPortland
22h 44m
2 stops
SAN10:13 amSan Diego
Jan 22
SAN2:56 pmSan Diego
18h 53m
1 stop
PDX9:49 amPortland
$161
Find similar
Frontier
Jan 11
PDX12:10 pmPortland
11h 49m
1 stop
SAN11:59 pmSan Diego
Jan 15
SAN9:16 amSan Diego
25h 17m
1 stop
PDX10:33 amPortland
$162
Find similar
Frontier
Jan 29
PDX11:28 amPortland
12h 40m
2 stops
SAN12:08 amSan Diego
Feb 5
SAN2:56 pmSan Diego
18h 53m
1 stop
PDX9:49 amPortland
$168
Find similar

United Airlines flights from Portland to San Diego

Our best United Airlines deals on Portland to San Diego flight tickets
United Airlines
Feb 7
PDX1:35 pmPortland
7h 14m
1 stop
SAN8:49 pmSan Diego
Feb 10
SAN11:10 amSan Diego
7h 00m
1 stop
PDX6:10 pmPortland
$172
Find similar
United Airlines
Jan 28
PDX1:35 pmPortland
10h 07m
2 stops
SAN11:42 pmSan Diego
Feb 4
SAN7:52 pmSan Diego
4h 47m
1 stop
PDX12:39 amPortland
$182
Find similar
United Airlines
Jan 24
PDX7:45 amPortland
5h 04m
1 stop
SAN12:49 pmSan Diego
Jan 26
SAN7:45 amSan Diego
4h 48m
1 stop
PDX12:33 pmPortland
$184
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated January 2, 2026.
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

PDX - SAN

PDXSAN

Portland

Sat 2/14

5:35 pm-8:12 pm

Nonstop2h 37m

San Diego

Sat 2/21

10:29 am-4:50 pm

1 stop6h 21m

$160

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Sun 1/18

11:29 am-10:13 am

2 stops22h 44m

San Diego

Thu 1/22

2:56 pm-9:49 am

1 stop18h 53m

$161

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Sun 1/11

12:10 pm-11:59 pm

1 stop11h 49m

San Diego

Thu 1/15

9:16 am-10:33 am

1 stop25h 17m

$162

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Wed 1/21

10:55 am-3:21 pm

1 stop4h 26m

San Diego

Wed 1/28

6:03 pm-8:46 pm

Nonstop2h 43m

$165

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Sat 2/14

5:35 pm-8:12 pm

Nonstop2h 37m

San Diego

Wed 2/18

10:15 am-4:35 pm

1 stop6h 20m

$166

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Tue 3/31

2:30 pm-5:05 pm

Nonstop2h 35m

San Diego

Sat 4/4

12:45 pm-4:52 pm

1 stop4h 07m

$167

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Thu 1/29

11:28 am-12:08 am

2 stops12h 40m

San Diego

Thu 2/5

2:56 pm-9:49 am

1 stop18h 53m

$168

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Sat 2/7

1:35 pm-8:49 pm

1 stop7h 14m

San Diego

Tue 2/10

11:10 am-6:10 pm

1 stop7h 00m

$172

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Sun 1/18

11:29 am-10:13 am

2 stops22h 44m

San Diego

Sun 1/25

10:51 am-11:18 am

1 stop24h 27m

$173

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Thu 1/15

11:59 am-12:15 am

1 stop12h 16m

San Diego

Sat 1/17

2:57 pm-7:23 am

1 stop16h 26m

$174

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 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 February, then departing from Portland during the month January is also very affordable. Most momondo users find prices during this month for around $226.

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

The cheapest day to depart from Portland 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 $270. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $323. 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 evening when flights can be purchased for as low as $271. Flights in the morning are often more expensive with an average ticket price of $319.

What is the cheapest Portland to San Diego flight route?

Fly from Portland to San Diego for the best Portland - San Diego flight prices

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 when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $279 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 for as low as $235 on momondo.

What cabin class options are available on Portland to San Diego flights?

There are 4 cabin classes available to choose from on Portland to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to San Diego flights?

You could potentially save up to 11% on your flight if you consider stops on a Portland to San Diego flight.

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

As of January 2026, prices for Portland to San Diego flights are approximately 47% more expensive when compared to flights at the same time last year.

When to book flights from Portland to San Diego

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

Cheap Portland to San Diego (PDX to SAN) flight deals and tips

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

Best Price Found

$158

Fastest flight time

2h 25m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Portland in the past 72 hours is $158. The best round-trip flight deal from Portland to San Diego found on momondo in the last 72 hours is $197.
The fastest flight from Portland to San Diego takes 2h 25m
Direct flights go from Portland to San Diego every day.
There is 1 airport in San Diego. From Portland there are direct flights to San Diego (SAN).
Search flight deals

  • How far is Portland to San Diego by plane?

    Portland and San Diego are 931.8 mi apart from one another. A reasonable flight in good conditions will take 2h 25m.

  • 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 are refreshed on a daily basis.

  • 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Portland to San Diego?

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

Best airlines flying from Portland to San Diego

Compare and see reviews for airlines that fly from Portland to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $87Free CancellationRating
5.7
3,066 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $90Free CancellationRating
6.3
8,254 reviews
Search Spirit Airlines flights
DeltaPriceFrom $152Free CancellationRating
7.9
8,017 reviews
Search Delta flights
SouthwestPriceFrom $158Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $159Free CancellationRating
8.0
11,597 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
9,132 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $177Free CancellationRating
7.8
2,823 reviews
Search Hawaiian Airlines flights

  • Southwest Flights From Portland to San Diego

    Southwest flight deals from Portland to San Diego start from $158 round-trip. Over the 2 Southwest flights for this route in a normal week, average airfare is usually $332 round-trip - but some users have found much cheaper deals with momondo.

  • Alaska Airlines Flights From Portland to San Diego

    Alaska Airlines (8.0/10 from 11,597 reviews) operates around 24 flights from Portland to San Diego in any given week. The average Alaska Airlines airfare for this route is around $293, with deals from around $159 rare but found on momondo. Referenced prices are for round-trip Portland to San Diego flight searches in the last 72 hours.

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
Poway
National City
Imperial Beach
Borrego Springs
San Ysidro
La Mesa
Lemon Grove
Alpine
Santee

Why use momondo?

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

It is quick and easy to find Portland to San Diego 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 San Diego that suits you.

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

Flights from Portland to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to San Diego.

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.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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