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OTM to ISN: distance & flight time
Ottumwa (Ottumwa Regional Airport) → Williston (Sloulin Field International Airport)
735 mi
1,182 km · 638 nm
2h 4m
estimated nonstop flight time
—
time difference · heading northwest
See live OTM→ISN fares Phone-only fares on this route — call free
Flight time details
735 miles nonstop takes roughly 2h 4m gate to gate, flying northwest. 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
- OTM — Ottumwa Regional Airport · Ottumwa, United States
- ISN — Sloulin Field International Airport · Williston, 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 OTM
- IOW · Iowa City Municipal Airport59 mi away
- CID · The Eastern Iowa Airport66 mi away
- DSM · Des Moines International Airport70 mi away
- IRK · Kirksville Regional Airport70 mi away
Near ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Frequently asked questions
How far is OTM from ISN?
The flight distance from Ottumwa (OTM) to Williston (ISN) is 735 miles (1,182 km, 638 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OTM to ISN?
A nonstop flight takes about 2h 4m 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 OTM to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OTM–ISN that never appear on search engines, with no booking fees.