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TGA to ONT: distance & flight time
Tengah (Tengah Air Base) → Ontario (Ontario International Airport)
8,809 mi
14,176 km · 7,654 nm
17h 44m
estimated nonstop flight time
-15h
time difference · heading northeast
See live TGA→ONT fares Phone-only fares on this route — call free
Flight time details
8,809 miles nonstop takes roughly 17h 44m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- TGA — Tengah Air Base · Tengah, Singapore
- ONT — Ontario International Airport · Ontario, United States
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 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
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
Frequently asked questions
How far is TGA from ONT?
The flight distance from Tengah (TGA) to Ontario (ONT) 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 TGA to ONT?
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 Tengah and Ontario?
Ontario is 15 hours behind Tengah.
What is the cheapest way to fly from TGA to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TGA–ONT that never appear on search engines, with no booking fees.