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DCA to IAD: distance & flight time
Washington (Ronald Reagan Washington National Airport) → Washington (Washington Dulles International Airport)
23 mi
38 km · 20 nm
32m
estimated nonstop flight time
Same time
time difference · heading west
See live DCA→IAD fares Phone-only fares on this route — call free
Flight time details
23 miles nonstop takes roughly 32m gate to gate, flying west. 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
- DCA — Ronald Reagan Washington National Airport · Washington, 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 DCA
Frequently asked questions
How far is DCA from IAD?
The flight distance from Washington (DCA) to Washington (IAD) is 23 miles (38 km, 20 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DCA to IAD?
A nonstop flight takes about 32m 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 DCA to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DCA–IAD that never appear on search engines, with no booking fees.