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SLU to BSL: distance & flight time
Castries (George F. L. Charles Airport) → Mulhouse (EuroAirport Basel-Mulhouse-Freiburg Airport)
4,509 mi
7,257 km · 3,918 nm
9h 18m
estimated nonstop flight time
+6h
time difference · heading northeast
See live SLU→BSL fares Phone-only fares on this route — call free
Flight time details
4,509 miles nonstop takes roughly 9h 18m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- SLU — George F. L. Charles Airport · Castries, Saint Lucia
- BSL — EuroAirport Basel-Mulhouse-Freiburg Airport · Mulhouse, France
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SLU
- UVF · Hewanorra International Airport20 mi away
- FDF · Martinique Aimé Césaire International Airport39 mi away
- SVD · Argyle International Airport61 mi away
- BQU · J F Mitchell Airport74 mi away
Near BSL
- BOR · Fontaine Airport25 mi away
- ZHI · Grenchen Airport29 mi away
- CMR · Colmar-Houssen Airport37 mi away
- BRN · Bern Belp Airport47 mi away
Frequently asked questions
How far is SLU from BSL?
The flight distance from Castries (SLU) to Mulhouse (BSL) is 4,509 miles (7,257 km, 3,918 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SLU to BSL?
A nonstop flight takes about 9h 18m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Castries and Mulhouse?
Mulhouse is 6 hours ahead of Castries.
What is the cheapest way to fly from SLU to BSL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SLU–BSL that never appear on search engines, with no booking fees.