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$84+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 May, booked 82 days in advance, depart on a Wednesday or Tuesday 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$224
(Mytrip)

One-way from

$84
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$411

Good round-trip deal

$325 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-San Diego flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Diego flights.
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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. 7% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
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 March 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 March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/107:17 amBWI - SAN
1 stop15h 36mSpirit Airlines
Sun 5/118:08 amSAN - BWI
2 stops43h 02mSpirit Airlines
Deal found 3/27$224
This CheapOair deal was found by Cheapflights users on 3/28. 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.
Thu 4/249:39 pmBWI - SAN
1 stop15h 46mMultiple Airlines
Mon 4/286:25 amSAN - BWI
1 stop7h 33mMultiple Airlines
Deal found 3/28$240
This United Airlines deal was found by Cheapflights users on 3/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2212:55 pmIAD - SAN
1 stop9h 01mUnited Airlines
Sat 4/266:15 amSAN - IAD
1 stop7h 11mUnited Airlines
Deal found 3/28$252
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/235:40 pmDCA - SAN
1 stop7h 20mSouthwest
Wed 4/301:35 pmSAN - DCA
1 stop6h 35mSouthwest
Deal found 3/27$252
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2210:00 amIAD - SAN
1 stop9h 30mAlaska Airlines
Tue 4/227:45 pmSAN - IAD
1 stop18h 37mAlaska Airlines
Deal found 3/27$256
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/33:17 pmDCA - SAN
1 stop9h 19mUnited Airlines
Sat 5/179:25 pmSAN - DCA
1 stop8h 34mUnited Airlines
Deal found 3/26$257
This Frontier deal was found by Cheapflights users on 3/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1012:05 pmBWI - SAN
1 stop14h 42mFrontier
Wed 4/166:25 amSAN - BWI
1 stop7h 03mFrontier
Deal found 3/27$258
This Frontier deal was found by Cheapflights users on 3/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/156:00 pmDCA - SAN
1 stop9h 14mFrontier
Wed 4/1612:19 pmSAN - DCA
1 stop6h 40mFrontier
Deal found 3/27$258
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/255:00 pmIAD - SAN
Nonstop5h 43mHawaiian Airlines
Wed 4/305:26 pmSAN - IAD
1 stop11h 17mHawaiian Airlines
Deal found 3/27$267
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/276:15 amBWI - SAN
1 stop9h 41mDelta
Thu 5/291:58 pmSAN - BWI
1 stop7h 50mDelta
Deal found 3/27$267
This CheapOair deal was found by Cheapflights users on 3/28. 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.
Wed 5/147:45 amIAD - SAN
1 stop18h 34mFrontier
Wed 5/218:00 amSAN - IAD
1 stop18h 55mFrontier
Deal found 3/28$270
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/239:59 amDCA - SAN
Nonstop5h 40mAlaska Airlines
Wed 4/231:57 pmSAN - DCA
Nonstop5h 02mAlaska Airlines
Deal found 3/27$271

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 March 28, 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

Sat 5/10

7:17 am-7:53 pm

1 stop15h 36m

San Diego

Sun 5/11

8:08 am-6:10 am

2 stops43h 02m

$224

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 4/24

9:39 pm-10:25 am

1 stop15h 46m

San Diego

Mon 4/28

6:25 am-4:58 pm

1 stop7h 33m

$240

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 4/22

12:55 pm-6:56 pm

1 stop9h 01m

San Diego

Sat 4/26

6:15 am-4:26 pm

1 stop7h 11m

$252

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 4/23

5:40 pm-10:00 pm

1 stop7h 20m

San Diego

Wed 4/30

1:35 pm-11:10 pm

1 stop6h 35m

$252

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 4/22

10:00 am-4:30 pm

1 stop9h 30m

San Diego

Tue 4/22

7:45 pm-5:22 pm

1 stop18h 37m

$256

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 5/3

3:17 pm-9:36 pm

1 stop9h 19m

San Diego

Sat 5/17

9:25 pm-8:59 am

1 stop8h 34m

$257

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 4/10

12:05 pm-11:47 pm

1 stop14h 42m

San Diego

Wed 4/16

6:25 am-4:28 pm

1 stop7h 03m

$258

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 4/15

6:00 pm-12:14 am

1 stop9h 14m

San Diego

Wed 4/16

12:19 pm-9:59 pm

1 stop6h 40m

$258

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Fri 4/25

5:00 pm-7:43 pm

Nonstop5h 43m

San Diego

Wed 4/30

5:26 pm-7:43 am

1 stop11h 17m

$267

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Tue 5/27

6:15 am-12:56 pm

1 stop9h 41m

San Diego

Thu 5/29

1:58 pm-12:48 am

1 stop7h 50m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 53 results
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Compare providers for flights from Washington, D.C. to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to San Diego in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, but allow extra time for long walks.

Read more about IADby Ramsey Qubein
SAN

Arriving at SAN? Plan ahead for traffic; use taxis or rideshares, but expect congestion due to its proximity to downtown.

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 March 21, 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 82 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 March 28, 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 28% 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 March 23, 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 March 28, 2025.

The most flights from WAS to SAN are scheduled on a Thursday (16 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 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 March 28, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to San Diego, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,335 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 8 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.

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

    According to our current data, Spirit Airlines ($224), Southwest ($252), and Alaska Airlines ($256) offers the cheapest pricing from Washington, D.C. to San Diego. Spirit Airlines is 41% 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 $84. However, be on the lookout for offers from Frontier and Hawaiian Airlines, 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. Reagan-National - San Diego. You may also consider Baltimore/Washington - San Diego or Washington, D.C. Dulles Intl - San Diego.

  • What are the most reliable airlines from Washington, D.C. to San Diego?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. to San Diego on time: Ethiopian Air (87%), Qatar Airways (81%), United Airlines (81%).

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

    The cheapest flight price from Washington, D.C. to San Diego is $128. On average you can expect to pay $793. The most popular route, (Washington, D.C. Reagan-National - San Diego), can usually be booked for $247.

  • 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
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

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.
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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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$232FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$110Average$246FlexibilityNo cancel feeOn-time65%
DeltaCheapest$154Average$366FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$211Average$359FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$249Average$443FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$257Average$443FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$291Average$487FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$333Average$519FlexibilityNo cancel feeOn-time63%
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