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ONT to THR: distance & flight time
Ontario (Ontario International Airport) → Teheran (Mehrabad International Airport)
7,565 mi
12,175 km · 6,574 nm
15h 18m
estimated nonstop flight time
+10.5h
time difference · heading north
See live ONT→THR fares Phone-only fares on this route — call free
Flight time details
7,565 miles nonstop takes roughly 15h 18m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.5-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- THR — Mehrabad International Airport · Teheran, Iran
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 THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 mi away
Frequently asked questions
How far is ONT from THR?
The flight distance from Ontario (ONT) to Teheran (THR) is 7,565 miles (12,175 km, 6,574 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to THR?
A nonstop flight takes about 15h 18m 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 Teheran?
Teheran is 10.5 hours ahead of Ontario.
What is the cheapest way to fly from ONT to THR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–THR that never appear on search engines, with no booking fees.