HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$75+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAN
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. 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.

Cheapflights Tip: The best prices from Washington, D.C. to San Diego are usually found in August or January, booked 48 days in advance, depart on a Wednesday or Friday and return on a Friday

Cheap 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 December 26, 2025.

This Expedia deal was found by Cheapflights users on 12/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:00 pmDCA - SAN
1 stop12h 59mFrontier
Mon 1/54:47 pmSAN - DCA
1 stop26h 12mFrontier
Deal found 12/24$304
This Frontier deal was found by Cheapflights users on 12/24. 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 12/258:00 amDCA - SAN
1 stop14h 15mFrontier
Thu 1/811:47 amSAN - DCA
1 stop7h 12mFrontier
Deal found 12/24$312
This Expedia deal was found by Cheapflights users on 12/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:00 amDCA - SAN
1 stop18h 59mFrontier
Wed 1/147:10 amSAN - DCA
1 stop26h 52mFrontier
Deal found 12/24$322
This Frontier deal was found by Cheapflights users on 12/24. 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.
Wed 12/312:00 pmDCA - SAN
1 stop12h 59mFrontier
Tue 1/67:00 amSAN - DCA
1 stop11h 59mFrontier
Deal found 12/24$328
This Priceline deal was found by Cheapflights users on 12/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:00 pmDCA - SAN
1 stop8h 59mFrontier
Thu 1/811:47 amSAN - DCA
1 stop7h 12mFrontier
Deal found 12/25$332
This Frontier deal was found by Cheapflights users on 12/24. 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 12/268:00 amDCA - SAN
1 stop14h 15mFrontier
Thu 1/86:36 amSAN - DCA
1 stop12h 23mFrontier
Deal found 12/24$342
This Frontier deal was found by Cheapflights users on 12/25. 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 12/262:00 pmDCA - SAN
1 stop12h 59mFrontier
Thu 1/1511:50 amSAN - DCA
1 stop7h 09mFrontier
Deal found 12/25$352
This Priceline deal was found by Cheapflights users on 12/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 pmDCA - SAN
1 stop8h 59mFrontier
Thu 1/86:36 amSAN - DCA
1 stop7h 23mFrontier
Deal found 12/25$362
This CheapOair deal was found by Cheapflights users on 12/24. 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 12/256:00 pmDCA - SAN
1 stop28h 15mFrontier
Wed 12/316:25 amSAN - DCA
1 stop27h 36mFrontier
Deal found 12/24$364
This Southwest deal was found by Cheapflights users on 12/25. 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.
Fri 12/262:45 pmBWI - SAN
1 stop8h 45mSouthwest
Thu 1/156:50 amSAN - BWI
Nonstop4h 50mSouthwest
Deal found 12/25$406
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/269:55 amBWI - SAN
2 stops13h 53mUnited Airlines
Thu 1/1511:10 amSAN - BWI
1 stop9h 05mUnited Airlines
Deal found 12/25$411
This United Airlines deal was found by Cheapflights users on 12/24. 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 12/319:55 amBWI - SAN
1 stop10h 39mUnited Airlines
Mon 1/54:00 pmSAN - BWI
1 stop10h 14mUnited Airlines
Deal found 12/24$449

Find 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 December 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$239
(Kiwi.com)

One-way from

$75
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$497

Good round-trip deal

$277 or less

Good one-way deal

$208 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 Washington, D.C. (WAS) to San Diego
Search Deals
One-way flight from Washington, D.C. (WAS) to San Diego
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Diego.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to San Diego.
Search Deals

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 December 26, 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

Sat 2/7

6:04 pm-11:09 pm

1 stop32h 05m

San Diego

Sat 2/14

9:28 am-5:27 pm

Nonstop4h 59m

$242

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 1/20

6:04 pm-1:19 pm

1 stop22h 15m

San Diego

Sat 1/24

6:15 am-4:26 pm

1 stop31h 11m

$246

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 2/3

5:50 pm-8:47 pm

Nonstop5h 57m

San Diego

Tue 2/10

7:00 am-5:35 pm

1 stop7h 35m

$247

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 3/7

5:13 pm-11:02 pm

1 stop8h 49m

San Diego

Wed 3/11

2:09 pm-12:31 am

1 stop7h 22m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Fri 1/30

5:50 pm-8:47 pm

Nonstop5h 57m

San Diego

Tue 2/3

10:52 am-9:17 pm

1 stop7h 25m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Thu 2/19

6:20 pm-9:19 pm

Nonstop5h 59m

San Diego

Mon 2/23

9:28 am-5:27 pm

Nonstop4h 59m

$257

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sun 1/25

5:50 pm-8:47 pm

Nonstop5h 57m

San Diego

Sun 2/1

10:00 pm-5:49 am

Nonstop4h 49m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 3/11

8:59 am-11:43 am

Nonstop5h 44m

San Diego

Sat 3/14

12:45 pm-9:02 pm

Nonstop5h 17m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 2/2

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Tue 2/10

12:53 pm-9:00 pm

Nonstop5h 07m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 2/13

5:00 am-11:27 am

1 stop9h 27m

San Diego

Tue 2/17

7:00 am-5:21 pm

1 stop7h 21m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 60 results
1
2
3
...
6

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Washington, D.C.-San Diego flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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.

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 December 19, 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 48 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, November is the cheapest month in which you can book a flight from Washington, D.C. to San Diego (average of $77). Flying from Washington, D.C. to San Diego in December is currently the most expensive (average of $193). 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 December 26, 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 December 20, 2025.

Travelers seeking maximum savings on their Washington, D.C. to San Diego flight should consider departing on Sunday at noon when fares are most often at their lowest. Sunday evenings 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 December 26, 2025.

The most flights from WAS to SAN are scheduled on a Wednesday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

How much does it cost to fly round-trip from Washington, D.C. to San Diego?

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 93% 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 $198.

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 Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 05m.

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 51m.

The best insider tips for Washington, D.C. to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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

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 December 26, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to San Diego, such as Alaska Airlines, Southwest, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,534 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,534 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,258 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,820 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
9,115 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,070 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 long is the flight from Washington, D.C. to San Diego?

    Alaska Airlines, United Airlines, and American Airlines can get you from Washington, D.C. to San Diego in just under 5h 57m. Your travel time can differ by up to 26h 08m. Airlines will cover a distance of 2248 mi. This flight may include one or multiple stops.

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

    According to our current data, Hawaiian Airlines ($118), Frontier ($130), and Delta ($148) offers the cheapest pricing from Washington, D.C. to San Diego. Hawaiian Airlines is 69% 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 Frontier, with whom users have recently found tickets for as low as $81. However, be on the lookout for offers from Alaska Airlines 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. Dulles Intl - San Diego. You may also consider Baltimore/Washington - San Diego or Washington, D.C. Reagan-National - 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: ITA Airways (100%), United Airlines (83%), Austrian Airlines (82%).

  • 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 $924. The most popular route, (Washington, D.C. Dulles Intl - San Diego), can usually be booked for $207.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. to San Diego (average of $77). Flying from Washington, D.C. to San Diego in December is currently the most expensive (average of $193). 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 Washington, D.C. to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Las Vegas flights
Reagan-National to Los Angeles flights
Dulles Intl to Los Angeles flights
Reagan-National to Las Vegas flights
Dulles Intl to San Francisco flights
Reagan-National to San Francisco flights
Dulles Intl to San Diego flights
Reagan-National to San Diego flights
Dulles Intl to Ontario flights
Reagan-National to Ontario flights
Reagan-National to Santa Ana flights
Dulles Intl to Sacramento flights
Dulles Intl to Palm Springs flights
Dulles Intl to Santa Ana flights
Dulles Intl to Reno flights
Dulles Intl to San Jose flights
Reagan-National to Palm Springs flights
Reagan-National to San Jose flights
Reagan-National to Sacramento flights
Reagan-National to Reno flights
Dulles Intl to Burbank flights
Dulles Intl to Oakland flights
Reagan-National to Oakland flights
Dulles Intl to Long Beach flights
Reagan-National to Burbank flights
Dulles Intl to Santa Barbara flights
Reagan-National to Santa Barbara flights
Dulles Intl to San Luis Obispo flights
Dulles Intl to Fresno flights
Dulles Intl to Monterey flights
Reagan-National to Long Beach flights
Reagan-National to Monterey flights
Reagan-National to Fresno flights
Reagan-National to Arcata flights
Dulles Intl to Medford flights
Dulles Intl to Arcata flights
Reagan-National to Medford flights
Reagan-National to Santa Rosa flights
Dulles Intl to Bakersfield flights
Reagan-National to Bakersfield flights
Reagan-National to San Luis Obispo flights
Dulles Intl to Santa Rosa flights
Reagan-National to Redding flights
Dulles Intl to Yuma flights
Reagan-National to Tijuana flights
Dulles Intl to Redding flights
Reagan-National to Yuma flights
Dulles Intl to Mammoth Lakes flights
Dulles Intl to Merced flights
Reagan-National to Mammoth Lakes flights

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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$271FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$137Average$281FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$158Average$360FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$211Average$352FlexibilityNo cancel feeOn-time75%
DeltaCheapest$216Average$401FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$222Average$444FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$234Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$256Average$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.