Seattle to San Diego flights
The cheapest round trip we found from Seattle to San Diego is $253 (Dec 21 – 23, Nonstop).
SEA to SAN · Round trip · Economy · Prices per person in USD · Price found (3 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | No fares found yet |
| December 2026 | $177 (cheapest month) |
| January 2027 | $202 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 21 – 23 2 nights · leave Mon$253$253 Book
Alaska Airlines Nonstop · 2h 50m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in San Diego
One Go City pass for San Diego Zoo, San Diego Zoo Safari Park, Legoland California and more
- All-Inclusive Pass Unlimited Visit as many attractions as you like for 1–7 days from $99 See pass
- All-Inclusive Pass Plus All-Inclusive plus 5 extra attractions from $149 See pass
- Essentials Pass A few top attractions, chosen as you go from $149 See pass
Go City prices checked Oct 23, 2026; the final price is on Go City. Partner links: we may earn a commission if you book, at no extra cost to you.
Plan the rest of your trip
San Diego · Dec 21 – 23Partner links: we may earn a commission if you book, at no extra cost to you.
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- Ontario $175 −20%
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Flights to San Diego from other cities
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Seattle to San Diego: questions
How much does a flight from Seattle to San Diego cost?
The cheapest round trip we have found right now is $253, leaving December 21 and returning December 23. Prices are per person, economy, in USD.
Which airports do Seattle to San Diego flights use?
Seattle airports include Seattle-Tacoma International (SEA) and Boeing Field International (BFI). San Diego airports include San Diego International (SAN) and McClellan-Palomar (CLD). The prices on this page cover every airport in both cities (SEA and SAN are the city codes).
About this route
We track round-trip economy fares from Seattle (United States) to San Diego (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $253, departing December 21 and returning December 23 on a nonstop flight. The cheapest month to fly in our data is December, from $177. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.