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IAD to TNN: distance & flight time
Washington (Washington Dulles International Airport) → Tainan (Tainan Airport)
8,010 mi
12,891 km · 6,961 nm
16h 10m
estimated nonstop flight time
+12h
time difference · heading north
See live IAD→TNN fares Phone-only fares on this route — call free
Flight time details
8,010 miles nonstop takes roughly 16h 10m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, United States
- TNN — Tainan Airport · Tainan, Taiwan
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 TNN
- PIF · Pingtung North Airport25 mi away
- KHH · Kaohsiung International Airport27 mi away
- CYI · Chiayi Airport37 mi away
- WOT · Wang-an Airport53 mi away
Frequently asked questions
How far is IAD from TNN?
The flight distance from Washington (IAD) to Tainan (TNN) is 8,010 miles (12,891 km, 6,961 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to TNN?
A nonstop flight takes about 16h 10m 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 Tainan?
Tainan is 12 hours ahead of Washington.
What is the cheapest way to fly from IAD to TNN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–TNN that never appear on search engines, with no booking fees.