￥30,760 Cheap United flights Washington (IAD) to San Diego (SAN)

View ￥30,760 flight on Sun, Jan 11, 2026Opens in a new window
  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

￥30,760 Cheap United flights Washington (IAD) to San Diego (SAN)

Prices were available within the past 7 days and start at ￥30,760 for one-way flights and ￥52,280 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Jan 17 - Thu, Jan 22
IAD
Washington
SAN
San Diego
￥52,280 Roundtrip, found 4 days ago
￥52,280
Roundtrip
found 4 days ago
Select United flight, departing Sat, Jan 17 from Washington to San Diego, returning Thu, Jan 22, priced at ￥52,280 found 4 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥61,730 Roundtrip, found 2 days ago
￥61,730
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥61,730 found 2 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥63,330 Roundtrip, found 2 days ago
￥63,330
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥63,330 found 2 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥64,850 Roundtrip, found 2 days ago
￥64,850
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥64,850 found 2 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥65,660 Roundtrip, found 2 days ago
￥65,660
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥65,660 found 2 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥66,640 Roundtrip, found 2 days ago
￥66,640
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥66,640 found 2 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥67,210 Roundtrip, found 2 days ago
￥67,210
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥67,210 found 2 days ago
United
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
SAN
San Diego
￥67,960 Roundtrip, found 2 days ago
￥67,960
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 9 from Washington to San Diego, returning Wed, Jan 14, priced at ￥67,960 found 2 days ago

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

September is typically the cheapest month to fly

From ￥27,039 - ￥49,250 per traveler.

Frequently asked questions

How much is a United Airlines flight from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
Scoring cheap one-way United Airlines flights from IAD to SAN from ￥30,760 on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from ￥52,280 for your next exciting getaway.**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 IAD to SAN with United Airlines?
Search for return or one-way flights to San Diego in January or November. You could find an affordable fare with United Airlines during these off-peak months.
Does United Airlines fly nonstop from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
Skip the layovers and fly from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN) on one of United Airlines's 21 weekly direct flights. Apply Expedia's "Nonstop" and "Airline" filters to find the United Airlines flight that'll get you to SAN at your preferred time.
How long does it take to fly from IAD to SAN with United Airlines?
On average, it takes 5h 37m to fly nonstop from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN) with United Airlines.
Which day of the week has the most United Airlines flights from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
United Airlines operates the most flights from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN) on Thursday. With up to 3 daily departures, you'll get the most choice and flexibility on this day.
What airports does United Airlines fly into in San Diego?
San Diego Intl. Airport (SAN) is the primary San Diego gateway for United Airlines flights from Washington Dulles Intl. Airport (IAD).
What type of plane does United Airlines fly from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
You'll likely be on a Boeing 777 or a Boeing 737-900 when flying United Airlines from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN). However, keep in mind that a different plane could be assigned to your route depending on operational reasons.
Can I change or cancel my United Airlines flight from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
Changes are typically free within 24 hours of making your booking, but your airline may add a charge after that. For more details about altering your flights, go to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to update your itinerary without being charged, tick the "Changes included" or "No cancel fee" filter when organizing your next adventure.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta
Popular airline
American Airlines
Distance
3598 km
Average flight time
3 hours 32 mins

Explore a world of travel with Expedia

*Available to Expedia members.