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GRK to PHN: distance & flight time
Killeen (Robert Gray Army Air Field Airport) → Port Huron (St Clair County International Airport)
1,172 mi
1,887 km · 1,019 nm
3h 1m
estimated nonstop flight time
+1h
time difference · heading northeast
See live GRK→PHN fares Phone-only fares on this route — call free
Flight time details
1,172 miles nonstop takes roughly 3h 1m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- GRK — Robert Gray Army Air Field Airport · Killeen, United States
- 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 GRK
- HLR · Hood Army Air Field8 mi away
- AUS · Austin Bergstrom International Airport61 mi away
- TPL · Draughon Miller Central Texas Regional Airport26 mi away
- ACT · Waco Regional Airport52 mi away
Near PHN
Frequently asked questions
How far is GRK from PHN?
The flight distance from Killeen (GRK) to Port Huron (PHN) is 1,172 miles (1,887 km, 1,019 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRK to PHN?
A nonstop flight takes about 3h 1m 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 Killeen and Port Huron?
Port Huron is 1 hour ahead of Killeen.
What is the cheapest way to fly from GRK to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRK–PHN that never appear on search engines, with no booking fees.