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ONT to TGA: distance & flight time
Ontario (Ontario International Airport) → Tengah (Tengah Air Base)
8,809 mi
14,176 km · 7,654 nm
17h 44m
estimated nonstop flight time
+15h
time difference · heading northwest
See live ONT→TGA fares Phone-only fares on this route — call free
Flight time details
8,809 miles nonstop takes roughly 17h 44m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- TGA — Tengah Air Base · Tengah, Singapore
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 TGA
- SIN · Singapore Changi Airport20 mi away
- XSP · Seletar Airport11 mi away
- QPG · Paya Lebar Air Base14 mi away
- JHB · Senai International Airport18 mi away
Frequently asked questions
How far is ONT from TGA?
The flight distance from Ontario (ONT) to Tengah (TGA) is 8,809 miles (14,176 km, 7,654 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to TGA?
A nonstop flight takes about 17h 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 Tengah?
Tengah is 15 hours ahead of Ontario.
What is the cheapest way to fly from ONT to TGA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–TGA that never appear on search engines, with no booking fees.