Dulles to Chicago
1h 36mgate to gate
The flight from Washington Dulles International Airport (IAD) to Chicago O'Hare International Airport (ORD) covers 945 km (587 miles) and takes approximately 1h 36m gate to gate for a typical jet.
The route heads north-west on an initial great-circle bearing of 294°, passing near 40.6° N, 82.6° W at its midpoint.
Bearing 294° north-west Midpoint 40.6° N, 82.6° 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: 945 km.
- Airborne time = that distance ÷ 805 km/h, a representative jet cruise speed: 1h 10m.
- Add a flat 25 minutes for pushback, taxi, climb, descent and taxi-in — the reason a 400 km hop is never half an hour: 1h 36m gate to gate.
- Winds, aircraft type and airline schedule padding are not modelled. The cruise-speed table shows how much that assumption is worth.
945 km / 805 km/h = 1h 10m airborne
+ 25 min ground = 1h 36m 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 | 1h 43m | 2h 08m |
| Narrowbody jet (A320, 737) | 780 km/h | 1h 13m | 1h 38m |
| Widebody jet (777, 787, A350) | 900 km/h | 1h 03m | 1h 28m |
| Private jet (Gulfstream) | 850 km/h | 1h 07m | 1h 32m |
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 | ORD | |
|---|---|---|
| Airport | Washington Dulles International Airport | Chicago O'Hare International Airport |
| City | Dulles | Chicago |
| Country | United States | United States |
| ICAO | KIAD | KORD |
| Coordinates | 38.9445, -77.4558 | 41.9786, -87.9048 |
| Elevation | 312 ft | 680 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 Chicago?
A non-stop flight from Dulles (IAD) to Chicago (ORD) takes about 1h 36m. The great-circle distance is 945 km (587 miles, 510 nautical miles), flying north-west on an initial bearing of 294°.
How far is Dulles from Chicago?
945 kilometres in a straight line over the earth's surface — 587 miles or 510 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 ORD?
This page calculates the direct-line time and distance; it does not track airline schedules. At 945 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.
