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IAD to PHN: distance & flight time
Washington (Washington Dulles International Airport) → Port Huron (St Clair County International Airport)
381 mi
613 km · 331 nm
1h 28m
estimated nonstop flight time
Same time
time difference · heading northwest
See live IAD→PHN fares Phone-only fares on this route — call free
Flight time details
381 miles nonstop takes roughly 1h 28m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- IAD — Washington Dulles International Airport · Washington, 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
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Near IAD
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Frequently asked questions
How far is IAD from PHN?
The flight distance from Washington (IAD) to Port Huron (PHN) is 381 miles (613 km, 331 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to PHN?
A nonstop flight takes about 1h 28m 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 cheapest way to fly from IAD to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–PHN that never appear on search engines, with no booking fees.