Cheap flights from Washington to San Diego
From 207 USD — compare hundreds of airlines
About this route
Compare flights from Washington to San Diego, a about 3,653 km route (around 5h nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as United Airlines, Silk Avia operate this route.
Prices by date
Airlines on this route
FAQ
What's the cheapest month to fly Washington to San Diego?
It's usually 2026-08, from 175 USD. Use the price calendar to compare other dates.
How long is the flight from Washington to San Diego?
A nonstop flight takes about 5h and covers around 3,653 km. Connecting itineraries take longer.
Are there direct flights from Washington to San Diego?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Washington to San Diego?
United Airlines, Silk Avia operate this route, among others. Compare them all in the results.
When should I book Washington–San Diego flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.