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OSF to ONT: distance & flight time
Moscow (Ostafyevo International Airport) → Ontario (Ontario International Airport)
6,076 mi
9,778 km · 5,280 nm
12h 23m
estimated nonstop flight time
-10h
time difference · heading north
See live OSF→ONT fares Phone-only fares on this route — call free
Flight time details
6,076 miles nonstop takes roughly 12h 23m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time set-back when reading arrival times on your ticket.
The two airports
- OSF — Ostafyevo International Airport · Moscow, Russia
- ONT — Ontario International Airport · Ontario, 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Frequently asked questions
How far is OSF from ONT?
The flight distance from Moscow (OSF) to Ontario (ONT) is 6,076 miles (9,778 km, 5,280 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSF to ONT?
A nonstop flight takes about 12h 23m 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 time difference between Moscow and Ontario?
Ontario is 10 hours behind Moscow.
What is the cheapest way to fly from OSF to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSF–ONT that never appear on search engines, with no booking fees.