San Diego

$90+ Cheap flights from Washington, D.C. (WAS) 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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAN
jun. 17 — jun. 241
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Cheapflights Tip: The best prices from Washington, D.C. to San Diego are usually found in August or January, booked 61 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Washington, D.C. to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$245
(FlightHub)

One-way from

$90
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$417

Good round-trip deal

$319 or less

Good one-way deal

$159 or less
From Washington, D.C. (WAS) to San Diego
One-way flight from Washington, D.C. (WAS) to San Diego
Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Diego.
Price to beat on a one-way flight from Washington, D.C. (WAS) to San Diego.

Find flight deals from Washington, D.C. to San Diego

Cheapest flights from Washington, D.C. to San Diego
Explore the most affordable flight options available from Washington, D.C. to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/77:30 amIAD - SAN
1 stop13h 40mFrontier
jue. 7/1012:59 pmSAN - IAD
1 stop14h 35mFrontier
Deal found 6/10$245
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/167:59 pmIAD - SAN
1 stop14h 43mAlaska Airlines
mié. 8/208:33 amSAN - IAD
Nonstop5h 14mAlaska Airlines
Deal found 6/10$247
This Southwest deal was found by Cheapflights users on 6/10. 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.
mar. 9/95:45 pmDCA - SAN
1 stop7h 05mSouthwest
mar. 9/167:05 amSAN - DCA
1 stop6h 55mSouthwest
Deal found 6/10$248
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 9/3010:25 amIAD - SAN
1 stop7h 34mUnited Airlines
sáb. 10/412:00 pmSAN - IAD
1 stop7h 06mUnited Airlines
Deal found 6/10$252
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
jue. 10/301:00 pmDCA - SAN
1 stop10h 08mFrontier
sáb. 11/16:25 amSAN - DCA
1 stop7h 36mFrontier
Deal found 6/9$254
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/255:04 pmBWI - SAN
2 stops17h 09mSpirit Airlines
lun. 6/307:31 pmSAN - BWI
1 stop7h 12mSpirit Airlines
Deal found 6/10$255
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/88:59 amDCA - SAN
Nonstop5h 47mAlaska Airlines
sáb. 11/151:00 pmSAN - DCA
Nonstop5h 05mAlaska Airlines
Deal found 6/10$257
This Southwest deal was found by Cheapflights users on 6/11. 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.
mié. 8/275:45 amIAD - SAN
2 stops9h 25mSouthwest
mar. 9/212:35 pmSAN - IAD
1 stop6h 30mSouthwest
Deal found 6/11$262
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/911:45 amDCA - SAN
1 stop11h 04mJetBlue
mar. 7/159:00 pmSAN - DCA
1 stop10h 59mJetBlue
Deal found 6/12$267
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 8/127:00 amDCA - SAN
1 stop8h 48mUnited Airlines
vie. 8/1510:15 amSAN - DCA
1 stop7h 41mUnited Airlines
Deal found 6/10$272
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/113:00 pmIAD - SAN
1 stop9h 35mDelta
sáb. 10/1810:30 pmSAN - IAD
1 stop7h 19mDelta
Deal found 6/10$277
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/1212:20 pmDCA - SAN
1 stop10h 06mDelta
sáb. 8/2310:40 pmSAN - DCA
1 stop6h 55mDelta
Deal found 6/10$277

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Diego that are best for you.

Fly from

Washington, D.C.

Fly to

San Diego

Route

Depart

Return

Price

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

lun. 7/7

7:30 am-6:10 pm

1 stop13h 40m

San Diego

jue. 7/10

12:59 pm-6:34 am

1 stop14h 35m

$245

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

sáb. 8/16

7:59 pm-7:42 am

1 stop14h 43m

San Diego

mié. 8/20

8:33 am-4:47 pm

Nonstop5h 14m

$247

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mar. 9/9

5:45 pm-9:50 pm

1 stop7h 05m

San Diego

mar. 9/16

7:05 am-5:00 pm

1 stop6h 55m

$248

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

mié. 6/25

5:04 pm-7:13 am

2 stops17h 09m

San Diego

lun. 6/30

7:31 pm-5:43 am

1 stop7h 12m

$255

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

sáb. 8/16

5:25 pm-7:52 pm

Nonstop5h 27m

San Diego

jue. 8/21

8:33 am-4:47 pm

Nonstop5h 14m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mié. 8/20

9:59 am-12:20 pm

Nonstop5h 21m

San Diego

sáb. 8/23

1:41 pm-9:59 pm

Nonstop5h 18m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

jue. 8/21

1:00 pm-7:31 pm

1 stop9h 31m

San Diego

dom. 8/24

6:29 am-4:59 pm

1 stop7h 30m

$258

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

mié. 8/27

5:45 am-12:10 pm

2 stops9h 25m

San Diego

mar. 9/2

12:35 pm-10:05 pm

1 stop6h 30m

$262

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

mar. 8/12

8:35 am-10:55 am

Nonstop5h 20m

San Diego

vie. 8/15

11:58 am-10:18 pm

1 stop7h 20m

$263

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mié. 7/9

11:45 am-7:49 pm

1 stop11h 04m

San Diego

mar. 7/15

9:00 pm-10:59 am

1 stop10h 59m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 45 results
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The best insider tips for Washington, D.C. to San Diego flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Diego trip
Airports
IAD

For a smooth departure from IAD, use the Aerotrain to quickly reach distant gates. Allow extra time for security queues.

Read more about IADby Ramsey Qubein
SAN

Upon arrival at SAN, consider using the free San Diego Flyer shuttle to reach the Old Town Transit Center conveniently.

Read more about SANby Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Washington, D.C. to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Washington, D.C. 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 Washington, D.C. to San Diego

How far ahead should I book a flight from Washington, D.C. to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to San Diego. Price data was last updated on June 9, 2025.

The price you pay for your flight from Washington, D.C. to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. to San Diego?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to San Diego (average of $286). Flying from Washington, D.C. 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 WAS to SAN?

Find hourly flight availability from Washington, D.C. 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 junio 12, 2025.

One of the essential ways to save on airfare from Washington, D.C. to San Diego is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 29% on airfare.

What is the cheapest day to fly from Washington, D.C. to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to San Diego. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Washington, D.C. to San Diego flight should consider departing on Wednesday evenings 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 Washington, D.C. to San Diego

Explore weekly flight availability from Washington, D.C. 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 junio 12, 2025.

The most flights from WAS to SAN are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to San Diego, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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 Washington, D.C.?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Washington, D.C.. On average, San Diego has 10 inbound flights from Washington, D.C. per day from 8 airlines. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • How popular is this Washington, D.C. to San Diego flight route?

  • What are the cheapest airlines flying from Washington, D.C. to San Diego round-trip?

    According to our current data, Frontier ($245), Alaska Airlines ($247), and Southwest ($248) offers the cheapest pricing from Washington, D.C. to San Diego. Frontier is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to San Diego one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $90. However, be on the lookout for offers from Hawaiian Airlines and Frontier, as they are both options that can get you from Washington, D.C. to San Diego for a low price.

  • What are the most popular routes from Washington, D.C. to San Diego?

  • What are the cheapest flights from Washington, D.C. to San Diego?

    The cheapest flight price from Washington, D.C. to San Diego is $138. On average you can expect to pay $345. The most popular route, (Washington, D.C. Dulles Intl - San Diego), can usually be booked for $237.

  • Can I find deals for flights from Washington, D.C. to San Diego that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to San Diego?

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

  • Can I find deals for business class flights from Washington, D.C. to San Diego?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to San Diego (average of $286). Flying from Washington, D.C. 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Washington, D.C. to San Diego

Discover the top 8 airlines that operate flights from Washington, D.C. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$273FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$110Average$270FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$183Average$442FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$188Average$359FlexibilityNo cancel feeOn-time85%
DeltaCheapest$198Average$378FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$211Average$357FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$257Average$450FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$307Average$496FlexibilityNo cancel feeOn-time63%

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