￥20,040 Cheap Alaska Airlines flights Washington (IAD) to San Diego (SAN)

View ￥20,040 flight on Sat, Jan 17, 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

￥20,040 Cheap Alaska Airlines flights Washington (IAD) to San Diego (SAN)

Prices were available within the past 7 days and start at ￥20,040 for one-way flights and ￥45,050 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jan 20 - Fri, Jan 23
IAD
Washington
SAN
San Diego
￥45,050 Roundtrip, found 4 days ago
￥45,050
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Washington to San Diego, returning Fri, Jan 23, priced at ￥45,050 found 4 days ago
Alaska Airlines
Tue, Jan 20 - Fri, Jan 23
IAD
Washington
SAN
San Diego
￥46,530 Roundtrip, found 4 days ago
￥46,530
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Washington to San Diego, returning Fri, Jan 23, priced at ￥46,530 found 4 days ago
Alaska Airlines
Mon, Feb 16 - Fri, Feb 20
IAD
Washington
SAN
San Diego
￥47,930 Roundtrip, found 3 days ago
￥47,930
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Feb 16 from Washington to San Diego, returning Fri, Feb 20, priced at ￥47,930 found 3 days ago
Alaska Airlines
Tue, Jan 20 - Fri, Jan 23
IAD
Washington
SAN
San Diego
￥48,170 Roundtrip, found 4 days ago
￥48,170
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Washington to San Diego, returning Fri, Jan 23, priced at ￥48,170 found 4 days ago
Alaska Airlines
Tue, Jan 20 - Fri, Jan 23
IAD
Washington
SAN
San Diego
￥48,990 Roundtrip, found 4 days ago
￥48,990
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Washington to San Diego, returning Fri, Jan 23, priced at ￥48,990 found 4 days ago
Alaska Airlines
Mon, Feb 16 - Fri, Feb 20
IAD
Washington
SAN
San Diego
￥49,420 Roundtrip, found 3 days ago
￥49,420
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Feb 16 from Washington to San Diego, returning Fri, Feb 20, priced at ￥49,420 found 3 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.
Flights from Washington (IAD) to San Diego (SAN)
Origin airport
Washington Dulles Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Popular airline
Delta
Distance
3598 km
Average flight time
3 hours 12 mins

Frequently asked questions

How much is an Alaska Airlines flight from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap Alaska Airlines return flights from ￥45,050 from IAD to SAN. Affordable one-way tickets from ￥20,040 are available as well.**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 Alaska Airlines?
Search for one-way or round-trip flights to San Diego in January or November. You could find a cheap fare with Alaska Airlines during these off-peak travel months.
Does Alaska 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 any of Alaska Airlines's 7 weekly direct flights. Apply our "Nonstop" and "Airline" filters to find the Alaska Airlines flight that'll arrive at SAN at a time that suits you.
How long does it take to fly from IAD to SAN with Alaska Airlines?
It takes approximately 5h 52m to travel nonstop from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN) with Alaska Airlines.
What airports does Alaska Airlines fly into in San Diego?
Alaska Airlines flights from Washington Dulles Intl. Airport (IAD) to San Diego come in to land at San Diego Intl. Airport (SAN). This is the main entry point to this destination.
What type of plane does Alaska Airlines fly from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
Alaska Airlines generally uses Boeing 737-900 planes for journeys from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN). Bear in mind that aircraft type can change depending on operational needs, so the plane you catch might be different on your day of travel.
Can I change or cancel my Alaska Airlines flight from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
You can usually modify or cancel your flight, although there may be additional charges if you booked over 24 hours ago. Need to keep your options open? Use our "No cancel fee" and "Changes included" filters to find flights that won't penalize you if you need to adjust your plans. To modify your booking, go to "Trips," select your flight and click on "Manage Booking" for further information.
*Available to Expedia members.