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Cheap flights from Washington, D.C. to San Diego from $68

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
5:45 am - 3:52 pmBWI-SAN
13h 07m2 stops
Frontier Logo
6:25 am - 7:52 pmSAN-BWI
10h 27m1 stop
$203Frontier
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Fri, Dec 12 - Sun, Dec 14
Multiple Airlines Logo
7:00 am - 3:06 pmBWI-SAN
11h 06m1 stop
Multiple Airlines Logo
6:25 am - 7:52 pmSAN-BWI
10h 27m1 stop
$208Multiple Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
Frontier Logo
6:00 am - 1:15 pmBWI-SAN
34h 15m2 stops
Frontier Logo
6:30 am - 9:05 pmSAN-BWI
11h 35m1 stop
$212Frontier
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Sun, Dec 21 - Sat, Jan 10
Southwest Logo
7:40 am - 3:35 pmIAD-SAN
10h 55m2 stops
Southwest Logo
9:45 am - 10:00 pmSAN-IAD
9h 15m2 stops
$247Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
4:45 pm - 10:25 pmDCA-SAN
8h 40m2 stops
Southwest Logo
7:00 am - 8:05 pmSAN-DCA
10h 05m2 stops
$247Southwest
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Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
12:50 pm - 3:28 pmIAD-SAN
5h 38mnonstop
United Airlines Logo
9:55 pm - 5:36 amSAN-IAD
4h 41mnonstop
$248United Airlines
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Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
7:00 pm - 11:42 pmIAD-SAN
7h 42m1 stop
United Airlines Logo
12:08 pm - 10:15 pmSAN-IAD
7h 07m1 stop
$252United Airlines
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Thu, Dec 4 - Tue, Dec 9
Alaska Airlines Logo
5:26 pm - 8:23 pmIAD-SAN
5h 57mnonstop
Alaska Airlines Logo
9:10 am - 5:04 pmSAN-IAD
4h 54mnonstop
$255Alaska Airlines
Find Deal
Mon, Jan 12 - Mon, Jan 19
Alaska Airlines Logo
7:14 pm - 10:07 amBWI-SAN
17h 53m1 stop
Alaska Airlines Logo
6:15 am - 6:14 pmSAN-BWI
8h 59m1 stop
$256Alaska Airlines
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Sat, Feb 7 - Tue, Feb 10
Hawaiian Airlines Logo
7:34 am - 3:06 pmIAD-SAN
10h 32m1 stop
Hawaiian Airlines Logo
2:00 pm - 10:05 pmSAN-IAD
5h 05mnonstop
$272Hawaiian Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13

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
Jan 12
IAD5:26 pmWashington, D.C. Dulles Intl
5h 57m
SAN8:23 pmSan Diego
Jan 19
SAN9:10 amSan Diego
4h 54m
IAD5:04 pmWashington, D.C. Dulles Intl
$255
Find similar
Alaska Airlines
Feb 7
BWI7:14 pmBaltimore/Washington
17h 53m
1 stop
SAN10:07 amSan Diego
Feb 10
SAN6:15 amSan Diego
8h 59m
1 stop
BWI6:14 pmBaltimore/Washington
$256
Find similar
Alaska Airlines
Dec 10
DCA8:59 amWashington, D.C. Reagan-National
5h 54m
SAN11:53 amSan Diego
Dec 14
SAN12:52 pmSan Diego
5h 10m
DCA9:02 pmWashington, D.C. Reagan-National
$257
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American Airlines flights from Washington, D.C. to San Diego

Our best American Airlines deals on Washington, D.C. to San Diego flight tickets
American Airlines
Dec 12
IAD2:16 pmWashington, D.C. Dulles Intl
8h 27m
1 stop
SAN7:43 pmSan Diego
Dec 17
SAN12:43 pmSan Diego
7h 25m
1 stop
IAD11:08 pmWashington, D.C. Dulles Intl
$256
Find similar
American Airlines
Feb 20
BWI11:46 amBaltimore/Washington
11h 39m
1 stop
SAN8:25 pmSan Diego
Feb 28
SAN6:15 amSan Diego
7h 35m
1 stop
BWI4:50 pmBaltimore/Washington
$269
Find similar
American Airlines
Dec 4
IAD2:06 pmWashington, D.C. Dulles Intl
7h 44m
1 stop
SAN6:50 pmSan Diego
Dec 8
SAN10:23 pmSan Diego
8h 57m
1 stop
IAD10:20 amWashington, D.C. Dulles Intl
$276
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 November 10, 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

Fri 12/12

5:45 am-3:52 pm

2 stops13h 07m

San Diego

Sun 12/14

6:25 am-7:52 pm

1 stop10h 27m

$203

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 12/10

7:00 am-3:06 pm

1 stop11h 06m

San Diego

Sun 12/14

6:25 am-7:52 pm

1 stop10h 27m

$208

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sun 12/21

6:00 am-1:15 pm

2 stops34h 15m

San Diego

Sat 1/10

6:30 am-9:05 pm

1 stop11h 35m

$212

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 12/9

7:40 am-3:35 pm

2 stops10h 55m

San Diego

Tue 12/16

9:45 am-10:00 pm

2 stops9h 15m

$247

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 12/3

4:45 pm-10:25 pm

2 stops8h 40m

San Diego

Wed 12/10

7:00 am-8:05 pm

2 stops10h 05m

$247

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 12/3

12:50 pm-3:28 pm

Nonstop5h 38m

San Diego

Wed 12/10

9:55 pm-5:36 am

Nonstop4h 41m

$248

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Thu 12/4

7:00 pm-11:42 pm

1 stop7h 42m

San Diego

Tue 12/9

12:08 pm-10:15 pm

1 stop7h 07m

$252

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

Mon 1/19

9:10 am-5:04 pm

Nonstop4h 54m

$255

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sat 2/7

7:14 pm-10:07 am

1 stop17h 53m

San Diego

Tue 2/10

6:15 am-6:14 pm

1 stop8h 59m

$256

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 12/6

7:34 am-3:06 pm

1 stop10h 32m

San Diego

Sat 12/13

2:00 pm-10:05 pm

Nonstop5h 05m

$272

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 $392. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $473. 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 $503.

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

Fly from Baltimore/Washington 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 $407 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 $337 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?

You could potentially save up to 8% on your flight if you consider stops on a Washington, D.C. to San Diego flight.

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

As of November 2025, prices for Washington, D.C. to San Diego flights are approximately 35% 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

$160

Fastest flight time

5h 35m

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 $160. The best round-trip flight deal from Washington, D.C. to San Diego found on momondo in the last 72 hours is $277.
The fastest flight from Washington, D.C. to San Diego takes 5h 35m
Direct flights go from Washington, D.C. to San Diego every day.
There is 1 airport near San Diego: 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
Spirit AirlinesPriceFrom $129Free CancellationRating
6.3
8,132 reviews
Search Spirit Airlines flights
FrontierPriceFrom $130Free CancellationRating
5.8
3,111 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,804 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $211Free CancellationRating
8.0
11,259 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $222Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,011 reviews
Search United Airlines flights
DeltaPriceFrom $260Free CancellationRating
7.9
8,004 reviews
Search Delta flights

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

    Alaska Airlines operates around 10 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 11,259 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 $474, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,238 user reviews) flies into San Diego from Washington, D.C. 4 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
Imperial Beach
La Mesa
Poway
Borrego Springs
San Ysidro
Lemon Grove
Alpine
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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