Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to San Diego from $48

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 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. to San Diego

Cheap round-trip flights

Spirit Airlines Logo
8:16 am - 6:42 pmBWI-SAN
13h 26m1 stop
Spirit Airlines Logo
1:35 pm - 4:30 amSAN-BWI
11h 55m1 stop
$97Spirit Airlines
Find Deal
Sat, Sep 6 - Wed, Sep 10
Spirit Airlines Logo
7:02 pm - 7:29 amBWI-SAN
15h 27m1 stop
Spirit Airlines Logo
1:35 pm - 4:30 amSAN-BWI
11h 55m1 stop
$98Spirit Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
Frontier Logo
10:17 am - 4:42 pmIAD-SAN
9h 25m1 stop
Frontier Logo
7:11 pm - 12:02 pmSAN-IAD
13h 51m1 stop
$164Frontier
Find Deal
Sun, Sep 7 - Fri, Sep 12
Frontier Logo
10:17 am - 5:42 pmIAD-SAN
10h 25m1 stop
Frontier Logo
5:37 pm - 9:17 amSAN-IAD
12h 40m1 stop
$166Frontier
Find Deal
Thu, Sep 18 - Sun, Sep 21
Alaska Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
Alaska Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
$231Alaska Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Hawaiian Airlines Logo
9:59 am - 12:20 pmDCA-SAN
5h 21mnonstop
Hawaiian Airlines Logo
1:41 pm - 9:59 pmSAN-DCA
5h 18mnonstop
$231Hawaiian Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Hawaiian Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
Hawaiian Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
$233Hawaiian Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Alaska Airlines Logo
9:59 am - 12:20 pmDCA-SAN
5h 21mnonstop
Alaska Airlines Logo
1:41 pm - 9:59 pmSAN-DCA
5h 18mnonstop
$237Alaska Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
United Airlines Logo
5:10 pm - 10:02 pmIAD-SAN
7h 52m1 stop
United Airlines Logo
9:45 pm - 5:43 amSAN-IAD
4h 58mnonstop
$247United Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16
United Airlines Logo
12:40 pm - 3:03 pmIAD-SAN
5h 23mnonstop
United Airlines Logo
12:01 pm - 10:15 pmSAN-IAD
7h 14m1 stop
$263United Airlines
Find Deal
Wed, Sep 10 - Mon, Sep 15

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

Our best Spirit Airlines deals on Washington, D.C. to San Diego flight tickets
Spirit Airlines
Sep 6
BWI8:16 amBaltimore/Washington
13h 26m
1 stop
SAN6:42 pmSan Diego
Sep 10
SAN1:35 pmSan Diego
11h 55m
1 stop
BWI4:30 amBaltimore/Washington
$97
Find similar
Spirit Airlines
Sep 10
BWI7:02 pmBaltimore/Washington
15h 27m
1 stop
SAN7:29 amSan Diego
Sep 16
SAN1:35 pmSan Diego
11h 55m
1 stop
BWI4:30 amBaltimore/Washington
$98
Find similar
Spirit Airlines
Sep 6
BWI8:16 amBaltimore/Washington
13h 26m
1 stop
SAN6:42 pmSan Diego
Sep 9
SAN1:35 pmSan Diego
11h 55m
1 stop
BWI4:30 amBaltimore/Washington
$99
Find similar

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

Our best Southwest deals on Washington, D.C. to San Diego flight tickets
Southwest
Sep 24
IAD5:45 amWashington, D.C. Dulles Intl
9h 05m
1 stop
SAN11:50 amSan Diego
Oct 1
SAN6:35 amSan Diego
7h 40m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
$227
Find similar
Southwest
Sep 10
IAD5:45 amWashington, D.C. Dulles Intl
9h 25m
2 stops
SAN12:10 pmSan Diego
Sep 16
SAN12:35 pmSan Diego
6h 30m
1 stop
IAD10:05 pmWashington, D.C. Dulles Intl
$232
Find similar
Southwest
Sep 20
IAD5:05 pmWashington, D.C. Dulles Intl
7h 30m
1 stop
SAN9:35 pmSan Diego
Sep 23
SAN12:35 pmSan Diego
6h 30m
1 stop
IAD10:05 pmWashington, D.C. Dulles Intl
$242
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 August 14, 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

Sat 9/6

8:16 am-6:42 pm

1 stop13h 26m

San Diego

Wed 9/10

1:35 pm-4:30 am

1 stop11h 55m

$97

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 9/10

7:02 pm-7:29 am

1 stop15h 27m

San Diego

Tue 9/16

1:35 pm-4:30 am

1 stop11h 55m

$98

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sun 9/7

10:17 am-4:42 pm

1 stop9h 25m

San Diego

Fri 9/12

7:11 pm-12:02 pm

1 stop13h 51m

$164

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Thu 9/18

10:17 am-5:42 pm

1 stop10h 25m

San Diego

Sun 9/21

5:37 pm-9:17 am

1 stop12h 40m

$166

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 9/6

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Sat 9/13

8:33 am-4:52 pm

Nonstop5h 19m

$231

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 9/6

9:59 am-12:20 pm

Nonstop5h 21m

San Diego

Sat 9/13

1:41 pm-9:59 pm

Nonstop5h 18m

$231

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 9/6

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Sat 9/13

8:33 am-4:52 pm

Nonstop5h 19m

$233

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 9/10

9:59 am-12:20 pm

Nonstop5h 21m

San Diego

Tue 9/16

1:41 pm-9:59 pm

Nonstop5h 18m

$237

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 9/9

5:10 pm-10:02 pm

1 stop7h 52m

San Diego

Tue 9/16

9:45 pm-5:43 am

Nonstop4h 58m

$247

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 9/10

12:40 pm-3:03 pm

Nonstop5h 23m

San Diego

Mon 9/15

12:01 pm-10:15 pm

1 stop7h 14m

$263

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $352.

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 Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $390. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $477. 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 $478.

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

Fly from Washington, D.C. Reagan-National 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 $412 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 $341 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 29% 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 August 2025, prices for Washington, D.C. to San Diego flights are approximately 18% cheaper 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

$48

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 $48. The best round-trip flight deal from Washington, D.C. to San Diego found on momondo in the last 72 hours is $97.
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 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 21m.

  • 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 $110Free CancellationRating
6.3
8,045 reviews
Search Spirit Airlines flights
FrontierPriceFrom $113Free CancellationRating
5.8
3,219 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,656 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $177Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $211Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $222Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
DeltaPriceFrom $256Free CancellationRating
8.0
7,980 reviews
Search Delta flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights

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

    Alaska Airlines operates around 12 flights from Washington, D.C. to San Diego every week. The average price of these flights found in the last 72 hours has been $352, 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 10,000 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 $472, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,244 user reviews) flies into San Diego from Washington, D.C. 8 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
La Mesa
Imperial Beach
Poway
San Ysidro
Borrego Springs
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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/19
Tue 8/26
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States