HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$138+ Cheap flights from District of Columbia to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SAN
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from District of Columbia to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from District of Columbia to San Diego

Keep the following information in mind while searching for District of Columbia to San Diego flight deals. Data was last updated January 18, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$240
(Kiwi.com)

One-way from

$138
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$337

Good round-trip deal

$277 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Diego flights.
Search Deals
From District of Columbia to San Diego
Search Deals
One-way flight from District of Columbia to San Diego
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from District of Columbia to San Diego.
Search Deals
Price to beat on a one-way flight from District of Columbia to San Diego.
Search Deals

Find flight deals from District of Columbia to San Diego

Cheapest flights from District of Columbia to San Diego
Explore the most affordable flight options available from District of Columbia to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:14 pm
IAD
-
SAN
1 stop16h 41m
Frontier
Wed 3/48:45 am
SAN
-
IAD
2 stops22h 48m
Frontier
Deal found 1/15$240
This Kiwi.com deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 pm
DCA
-
SAN
1 stop9h 08m
Frontier
Mon 3/22:00 pm
SAN
-
DCA
2 stops20h 15m
Frontier
Deal found 1/17$240
This Frontier deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/292:00 pm
DCA
-
SAN
1 stop13h 08m
Frontier
Thu 2/56:30 am
SAN
-
DCA
1 stop7h 29m
Frontier
Deal found 1/16$241
This Southwest deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:10 pm
IAD
-
SAN
1 stop7h 20m
Southwest
Tue 3/2411:40 am
SAN
-
IAD
2 stops9h 00m
Southwest
Deal found 1/15$242
This Kiwi.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:00 am
DCA
-
SAN
1 stop16h 41m
Frontier
Wed 2/257:11 am
SAN
-
DCA
1 stop8h 48m
Frontier
Deal found 1/16$242
This WAYA deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:00 pm
DCA
-
SAN
1 stop9h 08m
Multiple Airlines
Thu 2/1912:45 pm
SAN
-
DCA
Nonstop5h 17m
Multiple Airlines
Deal found 1/16$243
This Kiwi.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:14 pm
IAD
-
SAN
1 stop16h 41m
Frontier
Thu 3/511:59 am
SAN
-
IAD
2 stops33h 32m
Frontier
Deal found 1/16$244
This Frontier deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/72:00 pm
DCA
-
SAN
1 stop12h 31m
Frontier
Sun 2/159:09 am
SAN
-
DCA
1 stop9h 50m
Frontier
Deal found 1/16$244
This Frontier deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:00 pm
DCA
-
SAN
1 stop10h 14m
Frontier
Mon 3/239:00 am
SAN
-
DCA
1 stop9h 59m
Frontier
Deal found 1/17$245
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:54 pm
IAD
-
SAN
Nonstop5h 52m
United Airlines
Mon 2/236:10 pm
SAN
-
IAD
1 stop8h 16m
United Airlines
Deal found 1/16$246
This Kiwi.com deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 pm
DCA
-
SAN
1 stop9h 08m
Frontier
Mon 3/211:30 am
SAN
-
DCA
1 stop22h 45m
Frontier
Deal found 1/17$246
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:00 am
IAD
-
SAN
1 stop9h 30m
United Airlines
Wed 4/89:45 pm
SAN
-
IAD
Nonstop4h 59m
United Airlines
Deal found 1/16$247

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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, Cheapflights users made 2,558,603 searches. Data last updated January 18, 2026.
Use the filters below to find and compare flights from District of Columbia to San Diego that are best for you.

Fly from

District of Columbia

Fly to

San Diego

Route

Depart

Return

Price

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 2/11

5:26 pm-8:23 pm

Nonstop5h 57m

San Diego

Sun 2/15

9:28 am-5:27 pm

Nonstop4h 59m

$256

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 2/4

7:30 am-2:29 pm

1 stop9h 59m

San Diego

Sat 3/7

6:15 am-6:54 pm

1 stop9h 39m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 3/4

7:30 am-2:29 pm

1 stop9h 59m

San Diego

Wed 3/4

10:20 pm-9:13 am

1 stop7h 53m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 3/31

8:59 am-11:39 am

Nonstop5h 40m

San Diego

Sat 4/11

12:42 pm-9:00 pm

Nonstop5h 18m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 2/14

5:25 pm-10:48 pm

1 stop8h 23m

San Diego

Sat 2/21

6:15 am-6:54 pm

1 stop9h 39m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 3/18

9:00 am-4:31 pm

1 stop10h 31m

San Diego

Tue 3/24

9:55 pm-9:10 am

1 stop8h 15m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 6/30

6:10 am-12:55 pm

1 stop9h 45m

San Diego

Tue 7/14

10:10 pm-10:26 am

1 stop9h 16m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 3/11

6:00 pm-12:09 am

1 stop9h 09m

San Diego

Sun 3/15

6:25 am-1:02 pm

1 stop27h 37m

$263

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 4/1

10:40 am-7:07 pm

1 stop11h 27m

San Diego

Mon 4/6

8:25 pm-10:55 am

1 stop11h 30m

$265

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 3/18

10:05 am-7:17 pm

1 stop12h 12m

San Diego

Thu 3/26

10:45 am-10:59 pm

1 stop9h 14m

$265

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 45 results
1
2
3
...
5

Best time to book a flight from District of Columbia to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from District of Columbia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to San Diego

What is the cheapest month to book a flight from District of Columbia to San Diego?

Currently, November is the cheapest month in which you can book a flight from District of Columbia to San Diego (average of $77). Flying from District of Columbia to San Diego in December is currently the most expensive (average of $200). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DC to SAN?

Find hourly flight availability from District of Columbia to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 18, 2026.

It’s typically best to fly out from District of Columbia to San Diego in the evening. Doing so could potentially save you 21% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from District of Columbia to San Diego?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to San Diego. Price data was last updated on January 10, 2026.

Travelers seeking maximum savings on their District of Columbia to San Diego flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from District of Columbia to San Diego

Explore weekly flight availability from District of Columbia to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 18, 2026.

The most flights from USDC to SAN are scheduled on a Friday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from District of Columbia?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from District of Columbia. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • How long is the flight from District of Columbia to San Diego?

    Alaska Airlines, Delta, and Frontier can get you from District of Columbia to San Diego in just under 5h 57m. Your travel time can differ by up to 4h 02m. District of Columbia and San Diego are separated by a distance of 2248 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from District of Columbia to San Diego one-way?

    $46 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and Hawaiian Airlines, with prices starting from $81 and $108, respectively.

  • What are the most reliable airlines from District of Columbia to San Diego?

    Before booking your flight to San Diego from District of Columbia, check out the most reliable airlines to get you to your destination on time: Brussels Airlines (88%), Austrian Airlines (88%), United Airlines( 83%).

  • What are the cheapest flights from District of Columbia to San Diego?

    On average you can expect to pay $868 for a flight from District of Columbia to San Diego. The cheapest flight overall is $138 while the most popular route, (Washington, D.C. Dulles Intl - San Diego) is currently priced at $186.

  • Can I find deals for flights from District of Columbia to San Diego that include hotel bookings?

    Yes. In addition to deals on District of Columbia to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to San Diego.

  • Can I find deals for business class flights from District of Columbia to San Diego?

    Yes. Cheapflights offers flight deals from District of Columbia to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from District of Columbia to San Diego?

    Currently, November is the cheapest month in which you can book a flight from District of Columbia to San Diego (average of $77). Flying from District of Columbia to San Diego in December is currently the most expensive (average of $200). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for District of Columbia to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
O'Hare Intl to Las Vegas flights
Seattle to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
San Francisco to Las Vegas flights
Seattle to Los Angeles flights
Newark to Los Angeles flights
John F Kennedy Intl to San Francisco flights
Dulles Intl to Las Vegas flights
San Francisco to Ontario flights
Atlanta to Las Vegas flights
Minneapolis to Las Vegas flights
LaGuardia to Los Angeles flights
O'Hare Intl to Los Angeles flights
San Francisco to Los Angeles flights
Los Angeles to San Francisco flights
LaGuardia to Las Vegas flights
Boston to Las Vegas flights
Los Angeles to Las Vegas flights
Newark to San Francisco flights
Boston to Los Angeles flights
Baltimore to Las Vegas flights
Denver to Las Vegas flights
San Jose to Los Angeles flights
Reagan-National to Las Vegas flights
Ontario to San Francisco flights
Reagan-National to Los Angeles flights
Baltimore to Los Angeles flights
San Francisco to Santa Ana flights
O'Hare Intl to San Francisco flights
Burbank to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
Dulles Intl to Los Angeles flights
Austin to Las Vegas flights
Los Angeles to San Jose flights
Dallas/Fort Worth to Los Angeles flights
Orlando to Las Vegas flights
Hobby to Las Vegas flights
Santa Ana to Las Vegas flights
Atlanta to Los Angeles flights
Santa Ana to San Francisco flights
Detroit to Las Vegas flights
Cleveland to Las Vegas flights
Portland to Los Angeles flights
Hobby to Los Angeles flights
Denver to Los Angeles flights
Fort Lauderdale to Las Vegas flights
Cincinnati to Las Vegas flights

Top 8 airlines flying from District of Columbia to San Diego

Discover the top 8 airlines that operate flights from District of Columbia to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$348FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$120Average$269FlexibilityNo cancel feeOn-time65%
FrontierCheapest$130Average$265FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$415FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$211Average$352FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$216Average$438FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$222Average$432FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$244Average$417FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.