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KDT to DCA: distance & flight time
Nakhon Pathom (Kamphaeng Saen Airport) → Washington (Ronald Reagan Washington National Airport)
8,773 mi
14,118 km · 7,623 nm
17h 40m
estimated nonstop flight time
-11h
time difference · heading north
See live KDT→DCA fares Phone-only fares on this route — call free
Flight time details
8,773 miles nonstop takes roughly 17h 40m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time set-back when reading arrival times on your ticket.
The two airports
- KDT — Kamphaeng Saen Airport · Nakhon Pathom, Thailand
- DCA — Ronald Reagan Washington National Airport · Washington, United States
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 KDT
- DMK · Don Mueang International Airport48 mi away
- BKK · Suvarnabhumi Airport63 mi away
- TKH · Takhli Airport85 mi away
- HHQ · Hua Hin Airport101 mi away
Near DCA
Frequently asked questions
How far is KDT from DCA?
The flight distance from Nakhon Pathom (KDT) to Washington (DCA) is 8,773 miles (14,118 km, 7,623 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KDT to DCA?
A nonstop flight takes about 17h 40m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from KDT to DCA?
Nonstop service on KDT–DCA depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 17h 40m nonstop estimate.
What is the time difference between Nakhon Pathom and Washington?
Washington is 11 hours behind Nakhon Pathom.
What is the cheapest way to fly from KDT to DCA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KDT–DCA that never appear on search engines, with no booking fees.
Why are some KDT to DCA fares phone-only?
Consolidator contracts let us sell certain KDT–DCA tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.