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PHN to SEA: distance & flight time
Port Huron (St Clair County International Airport) → Seattle (Seattle Tacoma International Airport)
1,941 mi
3,123 km · 1,687 nm
4h 16m
estimated nonstop flight time
-3h
time difference · heading northwest
See live PHN→SEA fares Phone-only fares on this route — call free
Flight time details
1,941 miles nonstop takes roughly 4h 16m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- PHN — St Clair County International Airport · Port Huron, United States
- SEA — Seattle Tacoma International Airport · Seattle, 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 PHN
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is PHN from SEA?
The flight distance from Port Huron (PHN) to Seattle (SEA) is 1,941 miles (3,123 km, 1,687 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PHN to SEA?
A nonstop flight takes about 4h 16m 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 Port Huron and Seattle?
Seattle is 3 hours behind Port Huron.
What is the cheapest way to fly from PHN to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHN–SEA that never appear on search engines, with no booking fees.