Cheap Flights from Castries to Key West
No deal from Castries to Key West has cleared our price bar yet. What we have seen on the route is below.
Across 2 months of observations from Castries to Key West, the lowest round-trip fare we recorded was $4709, in October. The typical fare was $4800. October was the cheapest month we saw and September the dearest.
The most recent price we saw on this route was $4929 on Caribbean Airlines and United, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/castries">from Castries</a>, <a href="/to/key-west">to Key West</a>, or the return direction <a href="/from/key-west/to/castries">Key West to Castries</a>.
Latest price we saw: Castries 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 |
|---|---|---|---|---|---|---|
| Castries (SLU) to Key West (EYW) | $4929 | 160.6¢ | Oct 22 – Oct 28 | Caribbean Airlines and United | Oct 17 | Check price |
Price history: Castries to Key West
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $4709 | $4764 | 4 |
| Sep 2026 | $4837 | $4837 | 1 |
Frequently asked questions
How many flight deals from Castries to Key West are on Sparkflights right now?
There are 0 verified deals from Castries to Key West on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Castries to Key West?
The lowest fare we've recorded from Castries to Key West is $4709, based on 5 price observations over 2 months.
How much does a flight from Castries to Key West cost?
The typical round-trip fare we observed from Castries to Key West is $4800, against a recorded low of $4709. These are observations, not quotes.
When is the cheapest month to fly Castries to Key West?
October was the cheapest month we observed from Castries to Key West and September the dearest, over 2 months of data.
What is the current price from Castries to Key West?
The most recent fare our sweep saw from Castries to Key West is $4929, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.