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ONT to CND: distance & flight time
Ontario (Ontario International Airport) → Constanta (Mihail Kogălniceanu International Airport)
6,615 mi
10,646 km · 5,748 nm
13h 26m
estimated nonstop flight time
+10h
time difference · heading northeast
See live ONT→CND fares Phone-only fares on this route — call free
Flight time details
6,615 miles nonstop takes roughly 13h 26m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- CND — Mihail Kogălniceanu International Airport · Constanta, Romania
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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Near CND
- TCE · Tulcea Airport50 mi away
- VAR · Varna Airport85 mi away
- BBU · Băneasa International Airport118 mi away
- OTP · Henri Coandă International Airport119 mi away
Frequently asked questions
How far is ONT from CND?
The flight distance from Ontario (ONT) to Constanta (CND) is 6,615 miles (10,646 km, 5,748 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to CND?
A nonstop flight takes about 13h 26m 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 Ontario and Constanta?
Constanta is 10 hours ahead of Ontario.
What is the cheapest way to fly from ONT to CND?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–CND that never appear on search engines, with no booking fees.