Dulles to Washington
28mgate to gate
The flight from Washington Dulles International Airport (IAD) to Ronald Reagan Washington National Airport (DCA) covers 38 km (23 miles) and takes approximately 28m gate to gate for a typical jet.
The route heads east on an initial great-circle bearing of 106°, passing near 38.9° N, 77.2° W at its midpoint.
Bearing 106° east Midpoint 38.9° N, 77.2° W Model 805 km/h + 25 min
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
How this is worked out
- Take both airports' published coordinates from OurAirports — nothing here is scraped from another flight site.
- Great-circle distance by haversine on a mean earth radius of 6,371.0088 km: 38 km.
- Airborne time = that distance ÷ 805 km/h, a representative jet cruise speed: 3m.
- Add a flat 25 minutes for pushback, taxi, climb, descent and taxi-in — the reason a 400 km hop is never half an hour: 28m gate to gate.
- Winds, aircraft type and airline schedule padding are not modelled. The cruise-speed table shows how much that assumption is worth.
38 km / 805 km/h = 3m airborne
+ 25 min ground = 28m gate to gate
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
The same route, plotted on a world grid
The strip above gives the route its length and its shape. This gives it a position: latitude and longitude only, no coastlines, because a hand-drawn coastline would be decoration pretending to be data. On a flat grid the shortest path looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 4m | 29m |
| Narrowbody jet (A320, 737) | 780 km/h | 3m | 28m |
| Widebody jet (777, 787, A350) | 900 km/h | 3m | 28m |
| Private jet (Gulfstream) | 850 km/h | 3m | 28m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
Both airports
| IAD | DCA | |
|---|---|---|
| Airport | Washington Dulles International Airport | Ronald Reagan Washington National Airport |
| City | Dulles | Washington |
| Country | United States | United States |
| ICAO | KIAD | KDCA |
| Coordinates | 38.9445, -77.4558 | 38.8521, -77.0377 |
| Elevation | 312 ft | 15 ft |
Every figure on this plate is geometry. The shape of the earth is knowable; the airline's schedule is not.
Questions this plate answers
How long is the flight from Dulles to Washington?
A non-stop flight from Dulles (IAD) to Washington (DCA) takes about 28m. The great-circle distance is 38 km (23 miles, 20 nautical miles), flying east on an initial bearing of 106°.
How far is Dulles from Washington?
38 kilometres in a straight line over the earth's surface — 23 miles or 20 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between IAD and DCA?
This page calculates the direct-line time and distance; it does not track airline schedules. At 38 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.
