฿4,520 Cheap Flights from Washington (IAD) to San Diego (SAN)

View ฿4,520 flight on Wed, 17 Sep 2025Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to San Diego Intl. Airport (SAN)

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Cheap Flights from Washington (IAD) to San Diego (SAN)

Prices were available within the past 7 days and start at ฿4,520 for one-way flights and ฿9,360 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿9,360 Return, found 6 days ago
฿9,360
Return
found 6 days ago
Select Delta flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿9,360 found 6 days ago
Delta
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿10,665 Return, found 6 days ago
฿10,665
Return
found 6 days ago
Select Delta flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿10,665 found 6 days ago
Delta
Sun, 7 Dec - Sun, 14 Dec
IAD
Washington
SAN
San Diego
฿10,995 Return, found 4 days ago
฿10,995
Return
found 4 days ago
Select Delta flight, departing Sun, 7 Dec from Washington to San Diego, returning Sun, 14 Dec, priced at ฿10,995 found 4 days ago
American Airlines
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿11,000 Return, found 6 days ago
฿11,000
Return
found 6 days ago
Select American Airlines flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿11,000 found 6 days ago
Delta
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿11,320 Return, found 6 days ago
฿11,320
Return
found 6 days ago
Select Delta flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿11,320 found 6 days ago
Delta
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿11,325 Return, found 6 days ago
฿11,325
Return
found 6 days ago
Select Delta flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿11,325 found 6 days ago
Delta
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿11,645 Return, found 6 days ago
฿11,645
Return
found 6 days ago
Select Delta flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿11,645 found 6 days ago
Delta
Sun, 7 Dec - Sun, 14 Dec
IAD
Washington
SAN
San Diego
฿11,655 Return, found 4 days ago
฿11,655
Return
found 4 days ago
Select Delta flight, departing Sun, 7 Dec from Washington to San Diego, returning Sun, 14 Dec, priced at ฿11,655 found 4 days ago
Delta
Wed, 17 Sep - Mon, 22 Sep
IAD
Washington
SAN
San Diego
฿11,815 Return, found 6 days ago
฿11,815
Return
found 6 days ago
Select Delta flight, departing Wed, 17 Sep from Washington to San Diego, returning Mon, 22 Sep, priced at ฿11,815 found 6 days ago
United
Sun, 7 Dec - Sun, 14 Dec
IAD
Washington
SAN
San Diego
฿12,305 Return, found 4 days ago
฿12,305
Return
found 4 days ago
Select United flight, departing Sun, 7 Dec from Washington to San Diego, returning Sun, 14 Dec, priced at ฿12,305 found 4 days ago

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

September is typically the cheapest month to fly

From ฿5,290 - ฿8,622 per traveller.

Graph displaying average flight prices per month

Flight from Washington to San Diego route information
Origin airport
Washington Dulles Intl.
Destination airport
San Diego Intl.
Return price
฿9,360
Distance
3598 km
Average flight time
2 hours 22 mins

Perfect flights from Washington to San Diego

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to San Diego. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of San Diego, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Washington Dulles Intl. to San Diego Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿4,520 and roundtrip prices from ฿9,360. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at San Diego Intl. and explore San Diego and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your IAD to SAN travel arrangements today and embark on the journey of a lifetime in San Diego.

Frequently asked questions

How much is a flight from Dulles Intl. Airport to San Diego Airport?
The lowest price advertised for a round-trip journey from Dulles Intl. Airport to SAN is ฿9,360. But you better get a move on. This price is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to San Diego Intl. Airport (SAN)?
We understand that circumstances change unexpectedly, so we've made it as easy as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from IAD to San Diego Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Dulles Intl. Airport to San Diego Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from IAD to San Diego Airport?
The flying distance between Washington Dulles Intl. Airport (IAD) (IAD) and San Diego Airport (SAN) is 3,600 kilometres. Listen to some music or finish that novel and the trip will fly by.
Which airlines fly direct from IAD to SAN?
A favourite with many frequent flyers, United Airlines (UA) offers 91 flights every month from Washington Dulles Intl. Airport (IAD) to SAN. Pick the one that suits your travel plans and book your fare today.
Are Dulles Intl. Airport to San Diego Intl. Airport (SAN) flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally score a bargain, with some of the cheapest fares from Dulles Intl. Airport to San Diego Intl. Airport (SAN) appearing a few weeks before the date of departure. If you'd rather book ahead of time, Expedia compares and updates the best flight deals continuously — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines publish prices that far in advance.

Explore a world of travel with Expedia

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