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DCA to THS: distance & flight time
Washington (Ronald Reagan Washington National Airport) → Sukhothai (Sukhothai Airport)
8,556 mi
13,770 km · 7,435 nm
17h 15m
estimated nonstop flight time
+11h
time difference · heading north
See live DCA→THS fares Phone-only fares on this route — call free
Flight time details
8,556 miles nonstop takes roughly 17h 15m 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
- THS — Sukhothai Airport · Sukhothai, 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 THS
- PHS · Phitsanulok Airport44 mi away
- TKT · Tak Airport44 mi away
- PRH · Phrae Airport66 mi away
- LPT · Lampang Airport74 mi away
Frequently asked questions
How far is DCA from THS?
The flight distance from Washington (DCA) to Sukhothai (THS) is 8,556 miles (13,770 km, 7,435 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DCA to THS?
A nonstop flight takes about 17h 15m 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 Sukhothai?
Sukhothai is 11 hours ahead of Washington.
What is the cheapest way to fly from DCA to THS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DCA–THS that never appear on search engines, with no booking fees.