San Diego to Seattle: buy now or wait?
Cheaper than 92% of what we have seen
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Fare Desk notes
Today's fare of €62 is a buy now. This one-way flight from San Diego to Seattle is a direct connection operated by Southwest Airlines for departure on 12 November 2026. This price is cheaper than 78% of the fares we logged, which is well below our typical fare of €71. The absolute lowest fare we have seen on this route is €60.
Our observations show that November is the cheapest month to depart, featuring a typical fare of €66 based on 38 samples. By comparison, October has a typical fare of €80, and September sits at €89. To secure these lower prices, we recommend booking between 28 and 41 days before departure. This booking window offers a typical fare of €66, representing a saving of €128 versus buying last-minute.
We tracked 68 observations for this route. Southwest Airlines currently offers fares starting at €62, while Frontier Airlines is priced from €123.
Piratefly Fare Desk · prices checked on
All fares San Diego → Seattle
Cheapest first. Every price is live and goes straight to booking.
What the history says
Based on 82 prices we recorded on this exact route, compared against every month we have on record.
Best booking window
28–41 days — is when this route has been cheapest to book: €66 typical, on 28 observations. That is about €118 less than booking in the last two weeks.
Cheapest months to fly to Seattle
Hotels in Seattle for these dates
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