$75 Cheap Flights from Washington (DCA) to San Diego (SAN)

View $75 flight on Wed, Aug 27, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Washington to San Diego (DCA-SAN)

Prices were available within the past 7 days and start at $75 for one-way flights and $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Oct 28 - Tue, Nov 4
DCA
Washington
SAN
San Diego
$150 Roundtrip, found 3 hours ago
$150
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, Oct 28 from Washington to San Diego, returning Tue, Nov 4, priced at $150 found 3 hours ago
Southwest Airlines
Thu, Dec 4 - Sat, Dec 6
DCA
Washington
SAN
San Diego
$162 Roundtrip, found 3 hours ago
$162
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Thu, Dec 4 from Washington to San Diego, returning Sat, Dec 6, priced at $162 found 3 hours ago
Southwest Airlines
Tue, Sep 9 - Tue, Sep 16
DCA
Washington
SAN
San Diego
$165 Roundtrip, found 17 hours ago
$165
Roundtrip
found 17 hours ago
Select Southwest Airlines flight, departing Tue, Sep 9 from Washington to San Diego, returning Tue, Sep 16, priced at $165 found 17 hours ago
Southwest Airlines
Tue, Sep 9 - Wed, Sep 10
DCA
Washington
SAN
San Diego
$170 Roundtrip, found 1 hour ago
$170
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Sep 9 from Washington to San Diego, returning Wed, Sep 10, priced at $170 found 1 hour ago
Southwest Airlines
Tue, Sep 9 - Wed, Sep 10
DCA
Washington
SAN
San Diego
$174 Roundtrip, found 1 hour ago
$174
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Sep 9 from Washington to San Diego, returning Wed, Sep 10, priced at $174 found 1 hour ago
Southwest Airlines
Wed, Nov 12 - Fri, Nov 14
DCA
Washington
SAN
San Diego
$178 Roundtrip, found 4 hours ago
$178
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Wed, Nov 12 from Washington to San Diego, returning Fri, Nov 14, priced at $178 found 4 hours ago
American Airlines
Sat, Aug 30 - Tue, Sep 2
DCA
Washington
SAN
San Diego
$217 Roundtrip, just found
$217
Roundtrip
just found
Select American Airlines flight, departing Sat, Aug 30 from Washington to San Diego, returning Tue, Sep 2, priced at $217 just found
Alaska Airlines
Wed, Aug 27 - Wed, Sep 3
DCA
Washington
SAN
San Diego
$237 Roundtrip, just found
$237
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Aug 27 from Washington to San Diego, returning Wed, Sep 3, priced at $237 just found
United
Tue, Sep 9 - Wed, Sep 10
DCA
Washington
SAN
San Diego
$252 Roundtrip, found 1 hour ago
$252
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Sep 9 from Washington to San Diego, returning Wed, Sep 10, priced at $252 found 1 hour ago
JetBlue Airways
Thu, Sep 11 - Tue, Sep 16
DCA
Washington
SAN
San Diego
$267 Roundtrip, just found
$267
Roundtrip
just found
Select JetBlue Airways flight, departing Thu, Sep 11 from Washington to San Diego, returning Tue, Sep 16, priced at $267 just found

Find the cheapest month to fly from Washington (DCA) to San Diego (SAN)

October is typically the cheapest month to fly

From $138 - $357 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $355
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $355
Select flight to McClellan-Palomar CLD. Average driving time to city center is 38 minutes. Flights from $437
CLD
McClellan-Palomar
Average driving time to city center38 min
Flights from $437
Flights from Washington (DCA) to San Diego (SAN)
Origin airport
Ronald Reagan Washington National
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$150
Distance
2271 mi
Average flight time
4 hours 39 mins

Washington to San Diego Flights

The cheapest times to fly from Washington to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to San Diego are during the month of October. You can find some of the cheapest flights from Washington to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to San Diego

Sunday is one of the best days to book for cheap flights from Washington to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $75 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN) cost?
Grab a cheap one-way flight from $75 or cheap return flight from $150 from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
October is the most affordable month to fly from DCA to SAN. Traveling during quieter months is often the key to landing a great deal.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
There are no direct flights from Washington, DC (DCA-Ronald Reagan Washington National) to San Diego Intl. Airport (SAN). However, you'll find other airports with nonstop flights. Board your plane at Washington Dulles Intl. Airport (IAD) and head straight to San Diego without a layover.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
To find the cheapest airline that'll fly you from DCA to SAN, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
You'll have to take a flight with a layover if you're traveling from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from DCA to SAN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
To land at San Diego Intl. Airport (SAN) on time, pick a flight that leaves Ronald Reagan Washington National Airport (DCA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN) last-minute?
Last-minute fares from DCA to SAN are generally more expensive. To lock in the lowest prices, start looking for flights ahead of time. That being said, if your travel plans are flexible, you may land a cheap fare right before your trip.
Is it cheaper to book a DCA to SAN flight and hotel package?
You'll typically save money by booking a DCA to SAN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your ideal accommodations and flights, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
If you booked your DCA to SAN flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Explore a world of travel with Expedia

*Available to One Key members.