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DCA to NST: distance & flight time
Washington (Ronald Reagan Washington National Airport) → Nakhon Si Thammarat (Nakhon Si Thammarat Airport)
9,157 mi
14,736 km · 7,957 nm
18h 25m
estimated nonstop flight time
+11h
time difference · heading north
See live DCA→NST fares Phone-only fares on this route — call free
Flight time details
9,157 miles nonstop takes roughly 18h 25m 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
- DCA — Ronald Reagan Washington National Airport · Washington, United States
- NST — Nakhon Si Thammarat Airport · Nakhon Si Thammarat, 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 DCA
Near NST
- URT · Surat Thani Airport69 mi away
- USM · Samui Airport70 mi away
- KBV · Krabi Airport72 mi away
- TST · Trang Airport75 mi away
Frequently asked questions
How far is DCA from NST?
The flight distance from Washington (DCA) to Nakhon Si Thammarat (NST) is 9,157 miles (14,736 km, 7,957 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DCA to NST?
A nonstop flight takes about 18h 25m 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 Nakhon Si Thammarat?
Nakhon Si Thammarat is 11 hours ahead of Washington.
What is the cheapest way to fly from DCA to NST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DCA–NST that never appear on search engines, with no booking fees.