Cheap Flights from San Diego to Seattle
No deal from San Diego to Seattle has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from San Diego to Seattle, the lowest round-trip fare we recorded was $97, in September. The typical fare was $240. September was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $217 on Southwest, seen Oct 16. It is an unverified observation and may have changed.
See every deal <a href="/from/san-diego">from San Diego</a>, <a href="/to/seattle">to Seattle</a>, or the return direction <a href="/from/seattle/to/san-diego">Seattle to San Diego</a>.
Latest price we saw: San Diego to Seattle
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| San Diego (SAN) to Seattle (SEA) | $217 | 10.3¢ | Jan 16 – Jan 22 | Southwest | Oct 16 | Check price |
Price history: San Diego to Seattle
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $117 | $338 | 186 |
| Sep 2026 | $97 | $275 | 265 |
| Aug 2026 | $117 | $209 | 290 |
| Jul 2026 | $137 | $137 | 1 |
Frequently asked questions
How many flight deals from San Diego to Seattle are on Sparkflights right now?
There are 0 verified deals from San Diego to Seattle on the board right now. The list refreshes hourly.
What is the lowest price ever seen from San Diego to Seattle?
The lowest fare we've recorded from San Diego to Seattle is $97, based on 742 price observations over 4 months.
How much does a flight from San Diego to Seattle cost?
The typical round-trip fare we observed from San Diego to Seattle is $240, against a recorded low of $97. These are observations, not quotes.
When is the cheapest month to fly San Diego to Seattle?
September was the cheapest month we observed from San Diego to Seattle and July the dearest, over 4 months of data.
What is the current price from San Diego to Seattle?
The most recent fare our sweep saw from San Diego to Seattle is $217, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.