Need help booking?
Unpublished phone-only deals available
TRI to SIR: distance & flight time
BRISTOL (Tri-Cities Regional TN/VA Airport) → Sion (Sion Airport)
4,451 mi
7,163 km · 3,868 nm
9h 12m
estimated nonstop flight time
+6h
time difference · heading northeast
See live TRI→SIR fares Phone-only fares on this route — call free
Flight time details
4,451 miles nonstop takes roughly 9h 12m 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
- TRI — Tri-Cities Regional TN/VA Airport · BRISTOL, United States
- SIR — Sion Airport · Sion, Switzerland
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 TRI
- MRN · Foothills Regional Airport63 mi away
- AVL · Asheville Regional Airport72 mi away
- IKB · Wilkes County Airport75 mi away
- HKY · Hickory Regional Airport76 mi away
Near SIR
- AOT · Aosta Airport33 mi away
- QLS · Lausanne-Blécherette Airport41 mi away
- ZIN · Interlaken Air Base41 mi away
- MVV · Megève Airport43 mi away
Frequently asked questions
How far is TRI from SIR?
The flight distance from BRISTOL (TRI) to Sion (SIR) is 4,451 miles (7,163 km, 3,868 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TRI to SIR?
A nonstop flight takes about 9h 12m 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 BRISTOL and Sion?
Sion is 6 hours ahead of BRISTOL.
What is the cheapest way to fly from TRI to SIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TRI–SIR that never appear on search engines, with no booking fees.