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ATY to PHN: distance & flight time
Watertown (Watertown Regional Airport) → Port Huron (St Clair County International Airport)
740 mi
1,191 km · 643 nm
2h 5m
estimated nonstop flight time
+1h
time difference · heading east
See live ATY→PHN fares Phone-only fares on this route — call free
Flight time details
740 miles nonstop takes roughly 2h 5m gate to gate, flying east. 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
- ATY — Watertown Regional Airport · Watertown, 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 ATY
- HON · Huron Regional Airport64 mi away
- ABR · Aberdeen Regional Airport72 mi away
- MHE · Mitchell Municipal Airport90 mi away
- FSD · Joe Foss Field Airport94 mi away
Near PHN
Frequently asked questions
How far is ATY from PHN?
The flight distance from Watertown (ATY) to Port Huron (PHN) is 740 miles (1,191 km, 643 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ATY to PHN?
A nonstop flight takes about 2h 5m 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 Watertown and Port Huron?
Port Huron is 1 hour ahead of Watertown.
What is the cheapest way to fly from ATY to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ATY–PHN that never appear on search engines, with no booking fees.