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SIN to ONT: distance & flight time
Singapore (Singapore Changi Airport) → Ontario (Ontario International Airport)
8,797 mi
14,157 km · 7,644 nm
17h 43m
estimated nonstop flight time
-15h
time difference · heading northeast
See live SIN→ONT fares Phone-only fares on this route — call free
Flight time details
8,797 miles nonstop takes roughly 17h 43m 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
- SIN — Singapore Changi Airport · Singapore, 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 SIN
- QPG · Paya Lebar Air Base6 mi away
- XSP · Seletar Airport10 mi away
- BTH · Hang Nadim International Airport18 mi away
- TGA · Tengah Air Base20 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 SIN from ONT?
The flight distance from Singapore (SIN) to Ontario (ONT) is 8,797 miles (14,157 km, 7,644 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIN to ONT?
A nonstop flight takes about 17h 43m 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 Singapore and Ontario?
Ontario is 15 hours behind Singapore.
What is the cheapest way to fly from SIN to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIN–ONT that never appear on search engines, with no booking fees.