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Cheap flights from Washington, D.C. to San Diego from $75

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to San Diego departing on 1/18. 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 Washington, D.C. to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:49 pm - 11:36 pm
BWI
-
SAN
13h 47m1 stop
Frontier Logo
8:32 pm - 12:31 am
SAN
-
BWI
24h 59m2 stops
$176Frontier
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
12:49 pm - 11:36 pm
BWI
-
SAN
13h 47m1 stop
Multiple Airlines Logo
8:26 pm - 10:27 am
SAN
-
BWI
11h 01m2 stops
$206Multiple Airlines
Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
5:26 pm - 8:23 pm
IAD
-
SAN
5h 57mnonstop
Multiple Airlines Logo
6:54 am - 8:04 pm
SAN
-
IAD
10h 10m1 stop
$245Multiple Airlines
Mon, Jan 12 - Thu, Jan 15
Multiple Airlines Logo
8:00 am - 5:09 pm
DCA
-
SAN
12h 09m1 stop
Multiple Airlines Logo
12:53 pm - 9:00 pm
SAN
-
DCA
5h 07mnonstop
$245Multiple Airlines
Tue, Jan 13 - Sun, Jan 18
Southwest Logo
9:05 am - 4:45 pm
IAD
-
SAN
10h 40m2 stops
Southwest Logo
9:40 am - 9:55 pm
SAN
-
IAD
9h 15m2 stops
$247Southwest
Wed, Jan 7 - Wed, Jan 14
Southwest Logo
9:30 am - 6:40 pm
DCA
-
SAN
12h 10m2 stops
Southwest Logo
8:35 am - 8:15 pm
SAN
-
DCA
8h 40m2 stops
$247Southwest
Wed, Jan 7 - Wed, Jan 14
American Airlines Logo
5:26 pm - 10:50 pm
IAD
-
SAN
8h 24m1 stop
American Airlines Logo
9:21 am - 9:17 pm
SAN
-
IAD
8h 56m1 stop
$256American Airlines
Wed, Jan 7 - Sun, Jan 11
Alaska Airlines Logo
5:26 pm - 8:23 pm
IAD
-
SAN
5h 57mnonstop
Alaska Airlines Logo
9:10 am - 5:04 pm
SAN
-
IAD
4h 54mnonstop
$257Alaska Airlines
Sat, Jan 10 - Sun, Jan 11
American Airlines Logo
6:00 am - 10:56 am
IAD
-
SAN
7h 56m1 stop
American Airlines Logo
6:20 am - 4:31 pm
SAN
-
IAD
7h 11m1 stop
$258American Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
9:00 am - 11:45 am
IAD
-
SAN
5h 45mnonstop
United Airlines Logo
6:15 am - 4:22 pm
SAN
-
IAD
7h 07m1 stop
$267United Airlines
Fri, Jan 9 - Tue, Jan 13

Southwest flights from Washington, D.C. to San Diego

Our best Southwest deals on Washington, D.C. to San Diego flight tickets
Southwest
Jan 7
DCA11:00 amWashington, D.C. Reagan-National
10h 35m
2 stops
SAN6:35 pmSan Diego
Jan 14
SAN8:35 amSan Diego
8h 40m
2 stops
DCA8:15 pmWashington, D.C. Reagan-National
$247
Find similar
Southwest
Jan 13
DCA11:00 amWashington, D.C. Reagan-National
10h 35m
2 stops
SAN6:35 pmSan Diego
Jan 18
SAN7:20 amSan Diego
6h 40m
1 stop
DCA5:00 pmWashington, D.C. Reagan-National
$258
Find similar
Southwest
Mar 3
BWI10:40 amBaltimore/Washington
9h 35m
2 stops
SAN5:15 pmSan Diego
Mar 7
SAN10:40 pmSan Diego
7h 45m
1 stop
BWI9:25 amBaltimore/Washington
$262
Find similar

Alaska Airlines flights from Washington, D.C. to San Diego

Our best Alaska Airlines deals on Washington, D.C. to San Diego flight tickets
Alaska Airlines
Feb 19
DCA8:59 amWashington, D.C. Reagan-National
5h 44m
SAN11:43 amSan Diego
Feb 22
SAN12:45 pmSan Diego
5h 17m
DCA9:02 pmWashington, D.C. Reagan-National
$256
Find similar
Alaska Airlines
Feb 3
DCA8:00 amWashington, D.C. Reagan-National
12h 20m
1 stop
SAN5:20 pmSan Diego
Feb 10
SAN12:53 pmSan Diego
5h 07m
DCA9:00 pmWashington, D.C. Reagan-National
$257
Find similar
Alaska Airlines
Jan 13
IAD6:04 pmWashington, D.C. Dulles Intl
28h 15m
1 stop
SAN7:19 pmSan Diego
Jan 17
SAN9:10 amSan Diego
4h 54m
IAD5:04 pmWashington, D.C. Dulles Intl
$262
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 December 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 1/8

12:49 pm-11:36 pm

1 stop13h 47m

San Diego

Mon 1/12

8:32 pm-12:31 am

2 stops24h 59m

$176

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Mon 1/12

12:49 pm-11:36 pm

1 stop13h 47m

San Diego

Mon 1/19

8:26 pm-10:27 am

2 stops11h 01m

$206

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Mon 1/12

5:26 pm-8:23 pm

Nonstop5h 57m

San Diego

Thu 1/15

6:54 am-8:04 pm

1 stop10h 10m

$245

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 1/13

8:00 am-5:09 pm

1 stop12h 09m

San Diego

Sun 1/18

12:53 pm-9:00 pm

Nonstop5h 07m

$245

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 1/7

9:05 am-4:45 pm

2 stops10h 40m

San Diego

Wed 1/14

9:40 am-9:55 pm

2 stops9h 15m

$247

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 1/7

9:30 am-6:40 pm

2 stops12h 10m

San Diego

Wed 1/14

8:35 am-8:15 pm

2 stops8h 40m

$247

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 1/7

5:26 pm-10:50 pm

1 stop8h 24m

San Diego

Sun 1/11

9:21 am-9:17 pm

1 stop8h 56m

$256

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 1/10

5:26 pm-8:23 pm

Nonstop5h 57m

San Diego

Sun 1/11

9:10 am-5:04 pm

Nonstop4h 54m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 1/10

6:00 am-10:56 am

1 stop7h 56m

San Diego

Sat 1/17

6:20 am-4:31 pm

1 stop7h 11m

$258

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Fri 1/9

9:00 am-11:45 am

Nonstop5h 45m

San Diego

Tue 1/13

6:15 am-4:22 pm

1 stop7h 07m

$267

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 Washington, D.C. 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 Washington, D.C. 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 August, then departing from Washington, D.C. during the month September is also very affordable. Most momondo users find prices during this month for around $357.

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

The cheapest day to depart from Washington, D.C. 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 $382. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $469. 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 $339. Flights at noon are often more expensive with an average ticket price of $492.

What is the cheapest Washington, D.C. to San Diego flight route?

Fly from Washington, D.C. Dulles Intl to San Diego for the best Washington, D.C. - 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 Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $400 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Washington, D.C. for as low as $336 on momondo.

What cabin class options are available on Washington, D.C. to San Diego flights?

There are 4 cabin classes available to choose from on Washington, D.C. 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 Washington, D.C. to San Diego flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to San Diego.

How have Washington, D.C. to San Diego flight prices changed over time?

As of December 2025, prices for Washington, D.C. to San Diego flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to San Diego

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

Cheap Washington, D.C. to San Diego (WAS to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Diego

Best Price Found

$209

Fastest flight time

5h 15m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Washington, D.C. in the past 72 hours is $209. The best round-trip flight deal from Washington, D.C. to San Diego found on momondo in the last 72 hours is $295.
The fastest flight from Washington, D.C. to San Diego takes 5h 15m
Direct flights go from Washington, D.C. to San Diego every day.
There is 1 airport in San Diego. From Washington, D.C. there are direct flights to San Diego (SAN).
Search flight deals

  • How far is Washington, D.C. to San Diego by plane?

    Washington, D.C. and San Diego are 2268.2 mi apart from one another. By plane, this route typically takes 5h 15m.

  • When did momondo last update prices for flights from Washington, D.C. to San Diego Airport?

    Prices for flights from Washington, D.C. to San Diego Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to San Diego Airport?

  • How old do you have to be to fly from Washington, D.C. to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Diego Airport.

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

    The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to San Diego?

  • What is the most popular airline from Washington, D.C. to San Diego?

Best airlines flying from Washington, D.C. to San Diego

Compare and see reviews for airlines that fly from Washington, D.C. to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $137Free CancellationRating
6.3
8,189 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $211Free CancellationRating
8.0
11,479 reviews
Search Alaska Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
8,009 reviews
Search Delta flights
SouthwestPriceFrom $222Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $234Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Washington, D.C. to San Diego

    Alaska Airlines operates around 2 flights from Washington, D.C. to San Diego every week. The average price of these flights found in the last 72 hours has been $353, but momondo users have found Alaska Airlines deals from Washington, D.C. to San Diego from as low as $211 round-trip. Alaska Airlines has been scored 8.0/10 in 11,479 reviews.

  • Southwest Flights From Washington, D.C. to San Diego

    $222 is the best Southwest flight deal from Washington, D.C. to San Diego found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $443, however, with flight time and availability significantly affecting the price. Southwest (7.9/10 from 4,252 user reviews) flies into San Diego from Washington, D.C. 2 times in an average week so prices can vary.

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

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San Diego?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from Washington, D.C..

Can I find flights from Washington, D.C. to San Diego with flexible booking policies on momondo?

Flights from Washington, D.C. 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 Washington, D.C. to San Diego?

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

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

If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Washington, D.C. and alert you when they change.

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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