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ONT to UTP: distance & flight time
Ontario (Ontario International Airport) → Pattaya (U-Tapao International Airport)
8,331 mi
13,408 km · 7,240 nm
16h 48m
estimated nonstop flight time
+14h
time difference · heading northwest
See live ONT→UTP fares Phone-only fares on this route — call free
Flight time details
8,331 miles nonstop takes roughly 16h 48m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- UTP — U-Tapao International Airport · Pattaya, Thailand
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 UTP
- HHQ · Hua Hin Airport71 mi away
- BKK · Suvarnabhumi Airport71 mi away
- DMK · Don Mueang International Airport89 mi away
- TDX · Trat Airport93 mi away
Frequently asked questions
How far is ONT from UTP?
The flight distance from Ontario (ONT) to Pattaya (UTP) is 8,331 miles (13,408 km, 7,240 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to UTP?
A nonstop flight takes about 16h 48m 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 Pattaya?
Pattaya is 14 hours ahead of Ontario.
What is the cheapest way to fly from ONT to UTP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–UTP that never appear on search engines, with no booking fees.