Need help booking?
Unpublished phone-only deals available
FSI to HEM: distance & flight time
Fort Sill (Henry Post Army Air Field (Fort Sill)) → Helsinki (Helsinki Malmi Airport)
5,141 mi
8,274 km · 4,468 nm
10h 33m
estimated nonstop flight time
+8h
time difference · heading northeast
See live FSI→HEM fares Phone-only fares on this route — call free
Flight time details
5,141 miles nonstop takes roughly 10h 33m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- FSI — Henry Post Army Air Field (Fort Sill) · Fort Sill, United States
- HEM — Helsinki Malmi Airport · Helsinki, Finland
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 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
Near HEM
- HEL · Helsinki Vantaa Airport5 mi away
- HYV · Hyvinkää Airfield28 mi away
- TLL · Lennart Meri Tallinn Airport59 mi away
- QLF · Lahti Vesivehmaa Airport65 mi away
Frequently asked questions
How far is FSI from HEM?
The flight distance from Fort Sill (FSI) to Helsinki (HEM) is 5,141 miles (8,274 km, 4,468 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FSI to HEM?
A nonstop flight takes about 10h 33m 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 Fort Sill and Helsinki?
Helsinki is 8 hours ahead of Fort Sill.
What is the cheapest way to fly from FSI to HEM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FSI–HEM that never appear on search engines, with no booking fees.