Cheap Flights from Key West to Castries
No deal from Key West to Castries has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Key West to Castries, the lowest round-trip fare we recorded was $2241, in August. The typical fare was $5045. August was the cheapest month we saw and September the dearest.
The most recent price we saw on this route was $4642 on Caribbean Airlines and United, seen Oct 27. It is an unverified observation and may have changed.
See every deal <a href="/from/key-west">from Key West</a>, <a href="/to/castries">to Castries</a>, or the return direction <a href="/from/castries/to/key-west">Castries to Key West</a>.
Latest price we saw: Key West to Castries
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 |
|---|---|---|---|---|---|---|
| Key West (EYW) to Castries (SLU) | $4642 | 151.3¢ | Oct 29 – Nov 4 | Caribbean Airlines and United | Oct 27 | Check price |
Price history: Key West to Castries
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $4452 | $4589 | 10 |
| Sep 2026 | $4452 | $4606 | 6 |
| Aug 2026 | $2241 | $5940 | 7 |
Frequently asked questions
How many flight deals from Key West to Castries are on Sparkflights right now?
There are 0 verified deals from Key West to Castries on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Key West to Castries?
The lowest fare we've recorded from Key West to Castries is $2241, based on 23 price observations over 3 months.
How much does a flight from Key West to Castries cost?
The typical round-trip fare we observed from Key West to Castries is $5045, against a recorded low of $2241. These are observations, not quotes.
When is the cheapest month to fly Key West to Castries?
August was the cheapest month we observed from Key West to Castries and September the dearest, over 3 months of data.
What is the current price from Key West to Castries?
The most recent fare our sweep saw from Key West to Castries is $4642, on Oct 27. It is an unverified observation rather than a verified deal, so check it before booking.