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EAS to FSI: distance & flight time
San Sebastian (San Sebastian Airport) → Fort Sill (Henry Post Army Air Field (Fort Sill))
4,923 mi
7,922 km · 4,278 nm
10h 7m
estimated nonstop flight time
-7h
time difference · heading northwest
See live EAS→FSI fares Phone-only fares on this route — call free
Flight time details
4,923 miles nonstop takes roughly 10h 7m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- EAS — San Sebastian Airport · San Sebastian, Spain
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
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 EAS
- BIQ · Biarritz-Anglet-Bayonne Airport15 mi away
- PNA · Pamplona Airport41 mi away
- BIO · Bilbao Airport56 mi away
- VIT · Vitoria/Foronda Airport57 mi away
Near FSI
- LAW · Lawton Fort Sill Regional Airport6 mi away
- DUC · Halliburton Field28 mi away
- HBR · Hobart Regional Airport44 mi away
- SPS · Sheppard Air Force Base-Wichita Falls Municipal Airport46 mi away
Frequently asked questions
How far is EAS from FSI?
The flight distance from San Sebastian (EAS) to Fort Sill (FSI) is 4,923 miles (7,922 km, 4,278 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from EAS to FSI?
A nonstop flight takes about 10h 7m 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 San Sebastian and Fort Sill?
Fort Sill is 7 hours behind San Sebastian.
What is the cheapest way to fly from EAS to FSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on EAS–FSI that never appear on search engines, with no booking fees.