Need help booking?
Unpublished phone-only deals available
OSF to DUC: distance & flight time
Moscow (Ostafyevo International Airport) → Duncan (Halliburton Field)
5,687 mi
9,153 km · 4,942 nm
11h 37m
estimated nonstop flight time
-8h
time difference · heading northwest
See live OSF→DUC fares Phone-only fares on this route — call free
Flight time details
5,687 miles nonstop takes roughly 11h 37m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- OSF — Ostafyevo International Airport · Moscow, Russia
- 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 OSF
- VKO · Vnukovo International Airport11 mi away
- DME · Domodedovo International Airport17 mi away
- BKA · Bykovo Airport23 mi away
- ZIA · Zhukovsky International Airport25 mi away
Near DUC
Frequently asked questions
How far is OSF from DUC?
The flight distance from Moscow (OSF) to Duncan (DUC) is 5,687 miles (9,153 km, 4,942 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSF to DUC?
A nonstop flight takes about 11h 37m 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 OSF to DUC?
Nonstop service on OSF–DUC 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 11h 37m nonstop estimate.
What is the time difference between Moscow and Duncan?
Duncan is 8 hours behind Moscow.
What is the cheapest way to fly from OSF to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSF–DUC that never appear on search engines, with no booking fees.
Why are some OSF to DUC fares phone-only?
Consolidator contracts let us sell certain OSF–DUC 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.