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$59+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAN
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to San Diego are usually found in August or September, booked 67 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 July 30, 2025.

Round-trip from

$219
(Cheapflightsfares)

One-way from

$59
(CheapOair)

Popular in

December

Cheapest in

August

Average price

$378

Good round-trip deal

$292 or less

Good one-way deal

$158 or less
From Washington, D.C. (WAS) to San Diego
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One-way flight from Washington, D.C. (WAS) to San Diego
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Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Diego.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to San Diego.
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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 July 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/156:30 amBWI - SAN
1 stop14h 26mSpirit Airlines
Sun 8/241:17 pmSAN - BWI
1 stop12h 58mSpirit Airlines
Deal found 7/29$219
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:15 pmBWI - SAN
1 stop7h 51mMultiple Airlines
Fri 8/156:25 amSAN - BWI
1 stop7h 06mMultiple Airlines
Deal found 7/28$224
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:52 pmIAD - SAN
Nonstop5h 27mHawaiian Airlines
Mon 9/158:33 amSAN - IAD
Nonstop5h 19mHawaiian Airlines
Deal found 7/30$237
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 9/69:59 amDCA - SAN
Nonstop5h 21mAlaska Airlines
Wed 9/101:41 pmSAN - DCA
Nonstop5h 18mAlaska Airlines
Deal found 7/30$237
This Southwest deal was found by Cheapflights users on 7/30. 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 11/123:20 pmDCA - SAN
2 stops8h 50mSouthwest
Fri 11/147:20 amSAN - DCA
1 stop6h 40mSouthwest
Deal found 7/30$238
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/279:00 amIAD - SAN
Nonstop5h 24mUnited Airlines
Tue 9/3012:00 pmSAN - IAD
1 stop7h 06mUnited Airlines
Deal found 7/27$243
This lastminute.com deal was found by Cheapflights users on 7/28. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/59:40 amDCA - SAN
1 stop12h 15mJetBlue
Thu 9/1110:11 amSAN - DCA
1 stop9h 45mJetBlue
Deal found 7/28$244
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 8/3010:40 amBWI - SAN
Nonstop5h 20mSouthwest
Sat 9/69:10 pmSAN - BWI
Nonstop5h 05mSouthwest
Deal found 7/30$245
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:00 amDCA - SAN
1 stop7h 10mFrontier
Tue 8/196:25 amSAN - DCA
1 stop7h 34mFrontier
Deal found 7/29$245
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:53 pmDCA - SAN
1 stop9h 06mHawaiian Airlines
Wed 11/121:00 pmSAN - DCA
Nonstop5h 05mHawaiian Airlines
Deal found 7/28$247
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:00 amIAD - SAN
1 stop10h 48mMultiple Airlines
Sat 9/135:30 pmSAN - IAD
1 stop11h 03mMultiple Airlines
Deal found 7/28$248
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 9/206:09 pmIAD - SAN
1 stop19h 11mAlaska Airlines
Sat 9/2711:46 amSAN - IAD
1 stop9h 37mAlaska Airlines
Deal found 7/28$256

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 July 30, 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

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Fri 8/15

6:30 am-5:56 pm

1 stop14h 26m

San Diego

Sun 8/24

1:17 pm-5:15 am

1 stop12h 58m

$219

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Mon 8/11

6:15 pm-11:06 pm

1 stop7h 51m

San Diego

Fri 8/15

6:25 am-4:31 pm

1 stop7h 06m

$224

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Fri 9/12

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Mon 9/15

8:33 am-4:52 pm

Nonstop5h 19m

$237

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

Tue 9/16

1:41 pm-9:59 pm

Nonstop5h 18m

$237

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 9/30

10:45 am-6:45 pm

2 stops11h 00m

San Diego

Sun 11/9

9:35 am-6:50 pm

1 stop6h 15m

$242

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 9/27

9:00 am-11:24 am

Nonstop5h 24m

San Diego

Tue 9/30

12:00 pm-10:06 pm

1 stop7h 06m

$243

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 9/5

9:40 am-6:55 pm

1 stop12h 15m

San Diego

Thu 9/11

10:11 am-10:56 pm

1 stop9h 45m

$244

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 8/13

7:00 am-11:10 am

1 stop7h 10m

San Diego

Tue 8/19

6:25 am-4:59 pm

1 stop7h 34m

$245

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sat 8/30

10:40 am-1:00 pm

Nonstop5h 20m

San Diego

Sat 9/6

9:10 pm-5:15 am

Nonstop5h 05m

$245

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 8/30

9:59 am-12:20 pm

Nonstop5h 21m

San Diego

Wed 9/3

6:15 am-5:59 pm

1 stop8h 44m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 34 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 July 25, 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 July 30, 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 July 27, 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 July 30, 2025.

The most flights from WAS to SAN are scheduled on a Wednesday (17 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 on average).

What’s the top layover airport for flights from Washington, D.C. to San Diego?

Share of 1-stop round-trip flights from Washington, D.C. to San Diego chosen by Cheapflights users in the past 12 months, using the same layover each way.

Denver (DEN) – chosen by Cheapflights users on 83% of 1-stop itineraries from Washington, D.C. to San Diego on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. to San Diego?

Average round-trip fare for 1-stop flights from Washington, D.C. to San Diego, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $177.

What’s the fastest layover option from Washington, D.C. to San Diego?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. to San Diego, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 7h 48m.

Which airport typically offers the quickest layover for flights from Washington, D.C. to San Diego?

Average layover duration for 1-stop one-way flights from Washington, D.C. to San Diego, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 0h 58m.

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 July 30, 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Boarding

8.1

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 11 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?

    This flight path from Washington, D.C. to San Diego was viewed by 10 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    According to our current data, Spirit Airlines ($219), Alaska Airlines ($237), and Southwest ($238) offers the cheapest pricing from Washington, D.C. to San Diego. Spirit Airlines is 43% 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 $59. However, be on the lookout for offers from Southwest 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?

    The most popular route from Washington, D.C. to San Diego is Washington, D.C. Dulles Intl - San Diego. You may also consider Washington, D.C. Reagan-National - San Diego or Baltimore/Washington - 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 $148. On average you can expect to pay $402. The most popular route, (Washington, D.C. Dulles Intl - San Diego), can usually be booked for $188.

  • 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 San Diego?

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

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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.
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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$110Average$260FlexibilityNo cancel feeOn-time65%
FrontierCheapest$113Average$271FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$183Average$443FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$188Average$360FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$211Average$351FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$225Average$473FlexibilityNo cancel feeOn-time63%
DeltaCheapest$256Average$379FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$453FlexibilityNo cancel feeOn-time69%

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