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ONT to ADP: distance & flight time
Ontario (Ontario International Airport) → Galoya (Ampara Airport)
9,312 mi
14,987 km · 8,092 nm
18h 44m
estimated nonstop flight time
+12.5h
time difference · heading northwest
See live ONT→ADP fares Phone-only fares on this route — call free
Flight time details
9,312 miles nonstop takes roughly 18h 44m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.5-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- ADP — Ampara Airport · Galoya, Sri Lanka
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 ADP
- BTC · Batticaloa Airport26 mi away
- HIM · Hingurakgoda Air Force Base66 mi away
- GIU · Sigiriya Air Force Base75 mi away
- WRZ · Weerawila Airport80 mi away
Frequently asked questions
How far is ONT from ADP?
The flight distance from Ontario (ONT) to Galoya (ADP) is 9,312 miles (14,987 km, 8,092 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to ADP?
A nonstop flight takes about 18h 44m 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 Galoya?
Galoya is 12.5 hours ahead of Ontario.
What is the cheapest way to fly from ONT to ADP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–ADP that never appear on search engines, with no booking fees.