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PHN to SZL: distance & flight time
Port Huron (St Clair County International Airport) → Knobnoster (Whiteman Air Force Base)
644 mi
1,036 km · 559 nm
1h 52m
estimated nonstop flight time
-1h
time difference · heading southwest
See live PHN→SZL fares Phone-only fares on this route — call free
Flight time details
644 miles nonstop takes roughly 1h 52m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- PHN — St Clair County International Airport · Port Huron, United States
- SZL — Whiteman Air Force Base · Knobnoster, 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 SZL
- MKC · Charles B. Wheeler Downtown Airport62 mi away
- OJC · Johnson County Executive Airport65 mi away
- AIZ · Lee C Fine Memorial Airport70 mi away
- COU · Columbia Regional Airport72 mi away
Frequently asked questions
How far is PHN from SZL?
The flight distance from Port Huron (PHN) to Knobnoster (SZL) is 644 miles (1,036 km, 559 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PHN to SZL?
A nonstop flight takes about 1h 52m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from PHN to SZL?
Nonstop service on PHN–SZL depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 52m nonstop estimate.
What is the time difference between Port Huron and Knobnoster?
Knobnoster is 1 hour behind Port Huron.
What is the cheapest way to fly from PHN to SZL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PHN–SZL that never appear on search engines, with no booking fees.
Why are some PHN to SZL fares phone-only?
Consolidator contracts let us sell certain PHN–SZL tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.