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ONT to GIU: distance & flight time
Ontario (Ontario International Airport) → Sigiriya (Sigiriya Air Force Base)
9,296 mi
14,960 km · 8,078 nm
18h 42m
estimated nonstop flight time
+12.5h
time difference · heading northwest
See live ONT→GIU fares Phone-only fares on this route — call free
Flight time details
9,296 miles nonstop takes roughly 18h 42m 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
- GIU — Sigiriya Air Force Base · Sigiriya, 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 GIU
- HIM · Hingurakgoda Air Force Base18 mi away
- ACJ · Anuradhapura Air Force Base31 mi away
- TRR · China Bay Airport51 mi away
- BTC · Batticaloa Airport67 mi away
Frequently asked questions
How far is ONT from GIU?
The flight distance from Ontario (ONT) to Sigiriya (GIU) is 9,296 miles (14,960 km, 8,078 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to GIU?
A nonstop flight takes about 18h 42m 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 Sigiriya?
Sigiriya is 12.5 hours ahead of Ontario.
What is the cheapest way to fly from ONT to GIU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–GIU that never appear on search engines, with no booking fees.