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ONT to DMK: distance & flight time
Ontario (Ontario International Airport) → Bangkok (Don Mueang International Airport)
8,279 mi
13,323 km · 7,194 nm
16h 42m
estimated nonstop flight time
+14h
time difference · heading northwest
See live ONT→DMK fares Phone-only fares on this route — call free
Flight time details
8,279 miles nonstop takes roughly 16h 42m 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
- DMK — Don Mueang International Airport · Bangkok, 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 DMK
- BKK · Suvarnabhumi Airport19 mi away
- KDT · Kamphaeng Saen Airport48 mi away
- UTP · U-Tapao International Airport89 mi away
- TKH · Takhli Airport97 mi away
Frequently asked questions
How far is ONT from DMK?
The flight distance from Ontario (ONT) to Bangkok (DMK) is 8,279 miles (13,323 km, 7,194 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to DMK?
A nonstop flight takes about 16h 42m 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 Bangkok?
Bangkok is 14 hours ahead of Ontario.
What is the cheapest way to fly from ONT to DMK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–DMK that never appear on search engines, with no booking fees.