Need help booking?
Unpublished phone-only deals available
XSP to IAD: distance & flight time
Singapore (Seletar Airport) → Washington (Washington Dulles International Airport)
9,647 mi
15,525 km · 8,383 nm
19h 23m
estimated nonstop flight time
-12h
time difference · heading north
See live XSP→IAD fares Phone-only fares on this route — call free
Flight time details
9,647 miles nonstop takes roughly 19h 23m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- XSP — Seletar Airport · Singapore, Singapore
- IAD — Washington Dulles International 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 XSP
- SIN · Singapore Changi Airport10 mi away
- QPG · Paya Lebar Air Base5 mi away
- TGA · Tengah Air Base11 mi away
- JHB · Senai International Airport21 mi away
Frequently asked questions
How far is XSP from IAD?
The flight distance from Singapore (XSP) to Washington (IAD) is 9,647 miles (15,525 km, 8,383 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from XSP to IAD?
A nonstop flight takes about 19h 23m 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 Singapore and Washington?
Washington is 12 hours behind Singapore.
What is the cheapest way to fly from XSP to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on XSP–IAD that never appear on search engines, with no booking fees.