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PHN to DCA: distance & flight time
Port Huron (St Clair County International Airport) → Washington (Ronald Reagan Washington National Airport)
401 mi
645 km · 348 nm
1h 20m
estimated nonstop flight time
Same time
time difference · heading southeast
See live PHN→DCA fares Phone-only fares on this route — call free
Flight time details
401 miles nonstop takes roughly 1h 20m gate to gate, flying southeast. 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
- PHN — St Clair County International Airport · Port Huron, United States
- DCA — Ronald Reagan Washington National Airport · Washington, 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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Frequently asked questions
How far is PHN from DCA?
The flight distance from Port Huron (PHN) to Washington (DCA) is 401 miles (645 km, 348 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PHN to DCA?
A nonstop flight takes about 1h 20m 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 PHN to DCA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHN–DCA that never appear on search engines, with no booking fees.