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SUS to DUC: distance & flight time
Null (Spirit of St Louis Airport) → Duncan (Halliburton Field)
498 mi
802 km · 433 nm
1h 33m
estimated nonstop flight time
Same time
time difference · heading southwest
See live SUS→DUC fares Phone-only fares on this route — call free
Flight time details
498 miles nonstop takes roughly 1h 33m gate to gate, flying southwest. 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
- SUS — Spirit of St Louis Airport · Null, United States
- DUC — Halliburton Field · Duncan, 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 SUS
- STL · St Louis Lambert International Airport16 mi away
- ALN · St Louis Regional Airport36 mi away
- BLV · Scott AFB/Midamerica Airport45 mi away
- JEF · Jefferson City Memorial Airport81 mi away
Near DUC
Frequently asked questions
How far is SUS from DUC?
The flight distance from Null (SUS) to Duncan (DUC) is 498 miles (802 km, 433 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SUS to DUC?
A nonstop flight takes about 1h 33m 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 SUS to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SUS–DUC that never appear on search engines, with no booking fees.