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IAD to DMK: distance & flight time
Washington (Washington Dulles International Airport) → Bangkok (Don Mueang International Airport)
8,783 mi
14,134 km · 7,632 nm
17h 41m
estimated nonstop flight time
+11h
time difference · heading north
See live IAD→DMK fares Phone-only fares on this route — call free
Flight time details
8,783 miles nonstop takes roughly 17h 41m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, 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 IAD
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 IAD from DMK?
The flight distance from Washington (IAD) to Bangkok (DMK) is 8,783 miles (14,134 km, 7,632 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to DMK?
A nonstop flight takes about 17h 41m 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 Washington and Bangkok?
Bangkok is 11 hours ahead of Washington.
What is the cheapest way to fly from IAD to DMK?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–DMK that never appear on search engines, with no booking fees.