Need help booking?
Unpublished phone-only deals available
ONT to SYX: distance & flight time
Ontario (Ontario International Airport) → Sanya (Sanya Phoenix International Airport)
7,678 mi
12,357 km · 6,672 nm
15h 31m
estimated nonstop flight time
+15h
time difference · heading northwest
See live ONT→SYX fares Phone-only fares on this route — call free
Flight time details
7,678 miles nonstop takes roughly 15h 31m 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
- SYX — Sanya Phoenix International Airport · Sanya, China
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 SYX
- BAR · Qionghai Bo'ao Airport89 mi away
- HAK · Haikou Meilan International Airport132 mi away
Frequently asked questions
How far is ONT from SYX?
The flight distance from Ontario (ONT) to Sanya (SYX) is 7,678 miles (12,357 km, 6,672 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to SYX?
A nonstop flight takes about 15h 31m 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 Sanya?
Sanya is 15 hours ahead of Ontario.
What is the cheapest way to fly from ONT to SYX?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–SYX that never appear on search engines, with no booking fees.