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$128+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SAN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$243
(United Airlines)

One-way from

$128
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$357

Good round-trip deal

$311 or less

Good one-way deal

$158 or less
From District of Columbia to San Diego
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One-way flight from District of Columbia to San Diego
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Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from District of Columbia to San Diego.
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Price to beat on a one-way flight from District of Columbia to San Diego.
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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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/175:55 pmIAD - SAN
Nonstop5h 24mUnited Airlines
Wed 10/2212:00 pmSAN - IAD
1 stop7h 06mUnited Airlines
Deal found 9/13$243
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:00 pmDCA - SAN
1 stop13h 53mFrontier
Sun 10/59:03 pmSAN - DCA
1 stop12h 07mFrontier
Deal found 9/14$243
This Frontier deal was found by Cheapflights users on 9/14. 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.
Fri 10/1710:11 amIAD - SAN
1 stop11h 37mFrontier
Sun 10/267:23 pmSAN - IAD
1 stop10h 46mFrontier
Deal found 9/14$244
This Flightnetwork deal was found by Cheapflights users on 9/14. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:31 pmDCA - SAN
1 stop8h 19mFrontier
Mon 10/209:03 pmSAN - DCA
1 stop16h 56mFrontier
Deal found 9/14$244
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Wed 10/158:59 amDCA - SAN
Nonstop5h 28mAlaska Airlines
Sat 10/1812:12 pmSAN - DCA
Nonstop5h 17mAlaska Airlines
Deal found 9/14$245
This Frontier deal was found by Cheapflights users on 9/14. 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 10/302:00 pmDCA - SAN
1 stop12h 50mFrontier
Fri 11/76:41 amSAN - DCA
1 stop12h 18mFrontier
Deal found 9/14$246
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 11/18:25 amIAD - SAN
1 stop9h 35mUnited Airlines
Mon 11/1010:00 pmSAN - IAD
Nonstop4h 42mUnited Airlines
Deal found 9/13$247
This Southwest deal was found by Cheapflights users on 9/13. 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.
Wed 11/511:40 amDCA - SAN
2 stops10h 05mSouthwest
Tue 11/116:40 amSAN - DCA
2 stops9h 05mSouthwest
Deal found 9/13$247
This Frontier deal was found by Cheapflights users on 9/14. 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 10/286:31 pmDCA - SAN
1 stop8h 19mFrontier
Thu 10/306:25 amSAN - DCA
2 stops12h 34mFrontier
Deal found 9/14$248
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:00 amDCA - SAN
1 stop7h 09mFrontier
Mon 10/66:49 pmSAN - DCA
2 stops19h 10mFrontier
Deal found 9/15$249
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:24 amIAD - SAN
1 stop7h 47mAmerican Airlines
Mon 11/1010:23 pmSAN - IAD
1 stop8h 56mAmerican Airlines
Deal found 9/14$251
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:00 amDCA - SAN
1 stop8h 45mAmerican Airlines
Tue 10/146:16 amSAN - DCA
1 stop8h 51mAmerican Airlines
Deal found 9/14$251

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 September 15, 2025.
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 11/5

9:00 am-11:38 am

Nonstop5h 38m

San Diego

Thu 11/13

12:07 pm-10:12 pm

1 stop7h 05m

$243

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Fri 12/5

5:15 pm-10:30 pm

1 stop8h 15m

San Diego

Tue 12/9

9:55 pm-5:36 am

Nonstop4h 41m

$247

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Thu 10/16

5:42 pm-8:20 pm

Nonstop5h 38m

San Diego

Tue 10/21

8:30 am-4:42 pm

Nonstop5h 12m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Mon 11/10

5:40 pm-8:29 pm

Nonstop5h 49m

San Diego

Mon 11/17

9:11 am-5:13 pm

Nonstop5h 02m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 10/15

5:42 pm-8:20 pm

Nonstop5h 38m

San Diego

Wed 10/29

9:11 am-5:13 pm

Nonstop5h 02m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 12/5

8:59 am-11:53 am

Nonstop5h 54m

San Diego

Tue 12/9

12:52 pm-9:02 pm

Nonstop5h 10m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 1/23

10:30 am-3:33 pm

1 stop8h 03m

San Diego

Sat 1/31

10:40 pm-9:19 am

1 stop7h 39m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 11/5

7:40 am-12:40 pm

1 stop8h 00m

San Diego

Thu 11/13

11:50 am-11:30 pm

2 stops8h 40m

$262

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 10/22

7:40 am-11:50 am

1 stop7h 10m

San Diego

Sun 10/26

8:55 pm-1:00 pm

1 stop13h 05m

$262

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 11/5

5:40 pm-8:29 pm

Nonstop5h 49m

San Diego

Tue 11/18

11:37 am-6:23 am

1 stop15h 46m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 40 results
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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, August is the cheapest month in which you can book a flight from District of Columbia to San Diego (average of $286). Flying from District of Columbia to San Diego in March is currently the most expensive (average of $366). 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 September 15, 2025.

When flying from District of Columbia to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.

The most flights from USDC to SAN are scheduled on a Friday (16 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 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?

    United Airlines, Alaska Airlines, and Hawaiian Airlines can get you from District of Columbia to San Diego in just under 5h 38m. Your travel time will be generally consistent. District of Columbia and San Diego are separated by a distance of 2248 mi. Generally, flights for this route are nonstop.

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

    $129 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Hawaiian Airlines and Southwest, with prices starting from $129 and $134, 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: Ethiopian Air (93%), United Airlines (89%), Austrian Airlines( 76%).

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

    On average you can expect to pay $769 for a flight from District of Columbia to San Diego. The cheapest flight overall is $113 while the most popular route, (Washington, D.C. Dulles Intl - San Diego) is currently priced at $214.

  • 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, August is the cheapest month in which you can book a flight from District of Columbia to San Diego (average of $286). Flying from District of Columbia to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Alternative routes for District of Columbia to San Diego

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$271FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$157Average$299FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$158Average$358FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$211Average$355FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$222Average$468FlexibilityNo cancel feeOn-time63%
DeltaCheapest$256Average$396FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$256Average$442FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$257Average$454FlexibilityNo cancel feeOn-time69%

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