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IAD to HDY: distance & flight time
Washington (Washington Dulles International Airport) → Hat Yai (Hat Yai International Airport)
9,264 mi
14,909 km · 8,050 nm
18h 38m
estimated nonstop flight time
+11h
time difference · heading north
See live IAD→HDY fares Phone-only fares on this route — call free
Flight time details
9,264 miles nonstop takes roughly 18h 38m 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
- HDY — Hat Yai International Airport · Hat Yai, 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 HDY
- SGZ · Songkhla Airport23 mi away
- AOR · Sultan Abdul Halim Airport51 mi away
- PAN · Pattani Airport53 mi away
- LGK · Langkawi International Airport62 mi away
Frequently asked questions
How far is IAD from HDY?
The flight distance from Washington (IAD) to Hat Yai (HDY) is 9,264 miles (14,909 km, 8,050 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to HDY?
A nonstop flight takes about 18h 38m 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 Hat Yai?
Hat Yai is 11 hours ahead of Washington.
What is the cheapest way to fly from IAD to HDY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–HDY that never appear on search engines, with no booking fees.