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RKE to ONT: distance & flight time
Copenhagen (Copenhagen Roskilde Airport) → Ontario (Ontario International Airport)
5,572 mi
8,966 km · 4,842 nm
11h 23m
estimated nonstop flight time
-9h
time difference · heading northwest
See live RKE→ONT fares Phone-only fares on this route — call free
Flight time details
5,572 miles nonstop takes roughly 11h 23m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- RKE — Copenhagen Roskilde Airport · Copenhagen, Denmark
- 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 RKE
- CPH · Copenhagen Kastrup Airport21 mi away
- MMX · Malmö Sturup Airport49 mi away
- AGH · Ängelholm-Helsingborg Airport56 mi away
- MRW · Lolland Falster Maribo Airport67 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 RKE from ONT?
The flight distance from Copenhagen (RKE) to Ontario (ONT) is 5,572 miles (8,966 km, 4,842 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RKE to ONT?
A nonstop flight takes about 11h 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 Copenhagen and Ontario?
Ontario is 9 hours behind Copenhagen.
What is the cheapest way to fly from RKE to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RKE–ONT that never appear on search engines, with no booking fees.