Need help booking?
Unpublished phone-only deals available
SUX to SEP: distance & flight time
Sioux City (Sioux Gateway Col. Bud Day Field) → Stephenville (Stephenville Clark Regional Airport)
711 mi
1,144 km · 618 nm
2h 1m
estimated nonstop flight time
Same time
time difference · heading south
See live SUX→SEP fares Phone-only fares on this route — call free
Flight time details
711 miles nonstop takes roughly 2h 1m gate to gate, flying south. 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
- SUX — Sioux Gateway Col. Bud Day Field · Sioux City, United States
- SEP — Stephenville Clark Regional Airport · Stephenville, 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 SUX
- OFK · Karl Stefan Memorial Airport61 mi away
- YKN · Chan Gurney Municipal Airport62 mi away
- FET · Fremont Municipal Airport66 mi away
- OMA · Eppley Airfield80 mi away
Near SEP
- MWL · Mineral Wells Airport40 mi away
- DFW · Dallas Fort Worth International Airport81 mi away
- BKD · Stephens County Airport54 mi away
- FWH · NAS Fort Worth JRB/Carswell Field57 mi away
Frequently asked questions
How far is SUX from SEP?
The flight distance from Sioux City (SUX) to Stephenville (SEP) is 711 miles (1,144 km, 618 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SUX to SEP?
A nonstop flight takes about 2h 1m 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 SUX to SEP?
Nonstop service on SUX–SEP 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 2h 1m nonstop estimate.
What is the cheapest way to fly from SUX to SEP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SUX–SEP that never appear on search engines, with no booking fees.
Why are some SUX to SEP fares phone-only?
Consolidator contracts let us sell certain SUX–SEP 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.