Need help booking?
Unpublished phone-only deals available
LEX to IAD: distance & flight time
Lexington KY (Blue Grass Airport) → Washington (Washington Dulles International Airport)
392 mi
630 km · 340 nm
1h 30m
estimated nonstop flight time
Same time
time difference · heading east
See live LEX→IAD fares Phone-only fares on this route — call free
Flight time details
392 miles nonstop takes roughly 1h 30m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- LEX — Blue Grass Airport · Lexington KY, United States
- 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 LEX
- FFT · Capital City Airport19 mi away
- LOU · Bowman Field59 mi away
- SDF · Louisville International Standiford Field62 mi away
- SME · Lake Cumberland Regional Airport68 mi away
Frequently asked questions
How far is LEX from IAD?
The flight distance from Lexington KY (LEX) to Washington (IAD) is 392 miles (630 km, 340 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LEX to IAD?
A nonstop flight takes about 1h 30m 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 cheapest way to fly from LEX to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LEX–IAD that never appear on search engines, with no booking fees.