Need help booking?
Unpublished phone-only deals available
GNB to PHN: distance & flight time
Grenoble (Grenoble-Isère Airport) → Port Huron (St Clair County International Airport)
4,129 mi
6,644 km · 3,588 nm
8h 34m
estimated nonstop flight time
-6h
time difference · heading northwest
See live GNB→PHN fares Phone-only fares on this route — call free
Flight time details
4,129 miles nonstop takes roughly 8h 34m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- GNB — Grenoble-Isère Airport · Grenoble, France
- PHN — St Clair County International Airport · Port Huron, 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 GNB
- LYS · Lyon Saint-Exupéry Airport28 mi away
- LYN · Lyon-Bron Airport31 mi away
- CMF · Chambéry-Savoie Airport33 mi away
- VAF · Valence-Chabeuil Airport35 mi away
Near PHN
Frequently asked questions
How far is GNB from PHN?
The flight distance from Grenoble (GNB) to Port Huron (PHN) is 4,129 miles (6,644 km, 3,588 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GNB to PHN?
A nonstop flight takes about 8h 34m 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 Grenoble and Port Huron?
Port Huron is 6 hours behind Grenoble.
What is the cheapest way to fly from GNB to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GNB–PHN that never appear on search engines, with no booking fees.