Delta Cheap Flights from Washington to San Diego

View €110 flight on Wed, 11 Feb 2026Opens in a new window
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Prices were available within the past 7 days and start at €110 for one-way flights and €231 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 24 Jan - Sat, 31 Jan
DCA
Washington
SAN
San Diego
€231 Return, found 2 days ago
€231
Return
found 2 days ago
Select Delta flight, departing Sat, 24 Jan from Washington to San Diego, returning Sat, 31 Jan, priced at €231 found 2 days ago
Delta
Sat, 24 Jan - Sat, 31 Jan
DCA
Washington
SAN
San Diego
€235 Return, found 2 days ago
€235
Return
found 2 days ago
Select Delta flight, departing Sat, 24 Jan from Washington to San Diego, returning Sat, 31 Jan, priced at €235 found 2 days ago
Delta
Sat, 24 Jan - Sat, 31 Jan
DCA
Washington
SAN
San Diego
€273 Return, found 2 days ago
€273
Return
found 2 days ago
Select Delta flight, departing Sat, 24 Jan from Washington to San Diego, returning Sat, 31 Jan, priced at €273 found 2 days ago
Delta
Sat, 24 Jan - Sat, 31 Jan
DCA
Washington
SAN
San Diego
€278 Return, found 2 days ago
€278
Return
found 2 days ago
Select Delta flight, departing Sat, 24 Jan from Washington to San Diego, returning Sat, 31 Jan, priced at €278 found 2 days ago
Delta
Sat, 24 Jan - Sat, 31 Jan
DCA
Washington
SAN
San Diego
€313 Return, found 2 days ago
€313
Return
found 2 days ago
Select Delta flight, departing Sat, 24 Jan from Washington to San Diego, returning Sat, 31 Jan, priced at €313 found 2 days ago
Delta
Sat, 24 Jan - Sat, 31 Jan
DCA
Washington
SAN
San Diego
€320 Return, found 2 days ago
€320
Return
found 2 days ago
Select Delta flight, departing Sat, 24 Jan from Washington to San Diego, returning Sat, 31 Jan, priced at €320 found 2 days ago

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

January is typically the cheapest month to fly

From €115 - €265 per traveller.
Washington to San Diego route information
Origin airport
Ronald Reagan Washington National
Destination airport
San Diego Intl.
Distance
3633 km
Average flight time
4 hours 24 mins

Frequently asked questions

How much is a Delta Air Lines flight from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
Landing cheap one-way Delta Air Lines flights from DCA to SAN from €110 on Expedia is a breeze — just filter by "Price (lowest to highest)." Or check out our affordable return fares from €231 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DCA to SAN with Delta Air Lines?
Delta Air Lines flights to San Diego are often cheaper in the low-season months of January and November. Whether you're after a return or one-way ticket, you could land a better deal then.
Does Delta Air Lines fly nonstop from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
Fill in your dates, press search and check "Nonstop" on Expedia to browse any direct flights from DCA to SAN with Delta Air Lines or another airline.
What airports does Delta Air Lines fly into in San Diego?
San Diego Intl. Airport (SAN) is the primary San Diego gateway for Delta Air Lines flights from Ronald Reagan Washington National Airport (DCA).
Can I change or cancel my Delta Air Lines flight from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
Depending on the ticket type you purchased, a fee may apply if you cancel or reschedule your booking more than 24 hours after it's confirmed. To secure plane tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes when looking for flights. For more details on cancelling or modifying your reservation, visit "Trips," select your flight and tick "Manage Booking."

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*Available to Expedia members.