₩302,000 Cheap United flights Washington (DCA) to San Diego (SAN)

View ₩302,000 flight on Mon, Jan 12, 2026Opens in a new window
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₩302,000 Cheap United flights Washington (DCA) to San Diego (SAN)

Prices were available within the past 7 days and start at ₩302,000 for one-way flights and ₩560,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Dec 4 - Sun, Dec 7
DCA
Washington
SAN
San Diego
₩560,500 Roundtrip, found 2 days ago
₩560,500
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 4 from Washington to San Diego, returning Sun, Dec 7, priced at ₩560,500 found 2 days ago
United
Thu, Dec 4 - Sun, Dec 7
DCA
Washington
SAN
San Diego
₩568,100 Roundtrip, found 2 days ago
₩568,100
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 4 from Washington to San Diego, returning Sun, Dec 7, priced at ₩568,100 found 2 days ago
United
Sat, Aug 8 - Tue, Aug 11
DCA
Washington
SAN
San Diego
₩589,400 Roundtrip, found 1 day ago
₩589,400
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 8 from Washington to San Diego, returning Tue, Aug 11, priced at ₩589,400 found 1 day ago
United
Thu, Dec 4 - Sun, Dec 7
DCA
Washington
SAN
San Diego
₩603,600 Roundtrip, found 2 days ago
₩603,600
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 4 from Washington to San Diego, returning Sun, Dec 7, priced at ₩603,600 found 2 days ago
United
Thu, Dec 4 - Sun, Dec 7
DCA
Washington
SAN
San Diego
₩611,200 Roundtrip, found 2 days ago
₩611,200
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 4 from Washington to San Diego, returning Sun, Dec 7, priced at ₩611,200 found 2 days ago
United
Sat, Aug 8 - Tue, Aug 11
DCA
Washington
SAN
San Diego
₩618,400 Roundtrip, found 1 day ago
₩618,400
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 8 from Washington to San Diego, returning Tue, Aug 11, priced at ₩618,400 found 1 day ago
Flights from Washington (DCA) to San Diego (SAN)
Origin airport
Ronald Reagan Washington National
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
Delta
Distance
3633 km
Average flight time
4 hours 10 mins

Frequently asked questions

How much is a United Airlines flight from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
You can find affordable return United Airlines flights from ₩560,500 from DCA to SAN by sorting your results from "Price (lowest to highest)" on Expedia. Or search for options from ₩302,000 for a one-way trip.**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 United Airlines?
United Airlines flights to San Diego are generally cheaper in the low-season months of January and November. Whether you're after a return or one-way ticket, you could score a better deal then.
Does United Airlines fly nonstop from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
Fill in your dates, hit search and select "Nonstop" on Expedia to find any direct flights from DCA to SAN with United Airlines or other airlines.
What airports does United Airlines fly into in San Diego?
Catch a United Airlines flight from Ronald Reagan Washington National Airport (DCA) to San Diego, and you'll likely touch down at San Diego Intl. Airport (SAN). This is the airline's primary hub in this destination.
Can I change or cancel my United Airlines flight from Ronald Reagan Washington National Airport (DCA) to San Diego Intl. Airport (SAN)?
Depending on the type of ticket you purchased, a fee is typically charged if you cancel or change your flight more than 24 hours after confirmation. To find tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes while searching for flights. For more information on canceling or modifying your reservation, head to "Trips," select your flight and tick "Manage Booking."
*Available to Expedia members.