Cheap Flights from Seattle to Key West
No deal from Seattle to Key West has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from Seattle to Key West, the lowest round-trip fare we recorded was $378, in July. The typical fare was $480. July was the cheapest month we saw and October the dearest.
The most recent price we saw on this route was $418 on United, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/seattle">from Seattle</a>, <a href="/to/key-west">to Key West</a>, or the return direction <a href="/from/key-west/to/seattle">Key West to Seattle</a>.
Latest price we saw: Seattle to Key West
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 |
|---|---|---|---|---|---|---|
| Seattle (SEA) to Key West (EYW) | $418 | 7.7¢ | Nov 26 – Dec 3 | United | Oct 17 | Check price |
Price history: Seattle to Key West
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $398 | $651 | 49 |
| Sep 2026 | $378 | $397 | 29 |
| Aug 2026 | $378 | $493 | 154 |
| Jul 2026 | $378 | $378 | 1 |
Frequently asked questions
How many flight deals from Seattle to Key West are on Sparkflights right now?
There are 0 verified deals from Seattle to Key West on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Seattle to Key West?
The lowest fare we've recorded from Seattle to Key West is $378, based on 233 price observations over 4 months.
How much does a flight from Seattle to Key West cost?
The typical round-trip fare we observed from Seattle to Key West is $480, against a recorded low of $378. These are observations, not quotes.
When is the cheapest month to fly Seattle to Key West?
July was the cheapest month we observed from Seattle to Key West and October the dearest, over 4 months of data.
What is the current price from Seattle to Key West?
The most recent fare our sweep saw from Seattle to Key West is $418, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.