IAH to ORD: Distance and Flight Time
The distance from George Bush Intercontinental Airport (IAH) to Chicago O'Hare International Airport (ORD) is 1,491 km (926 mi). A typical nonstop flight covers it in about 2h 20m, heading northeast. The distance is the same in either direction (ORD to IAH).
How far is it from Houston to Chicago?
The great-circle distance between George Bush Intercontinental Airport (IAH) and Chicago O'Hare International Airport (ORD) is 1,491 km (926 mi, 805 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from IAH to ORD?
A nonstop flight typically takes about 2h 20m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. ORD is roughly northeast of IAH.
How is the IAH to ORD route written in code?
The pair is written IAH-ORD in IATA codes and KIAH-KORD in ICAO codes, the form used on a flight plan. George Bush Intercontinental Airport is IAH (KIAH), Chicago O'Hare International Airport is ORD (KORD).
| IAH | ORD | |
|---|---|---|
| Airport | George Bush Intercontinental Airport | Chicago O'Hare International Airport |
| ICAO code | KIAH | KORD |
| Country | United States | United States |
| Elevation | 97 ft | 680 ft |
| Rank by connections | #49 | #2 |
Both ICAO codes start with K, the prefix ICAO assigns to the contiguous United States, so this is a route inside one ICAO region. How ICAO prefixes are laid out.
ORD sits 583 ft (178 m) higher than IAH, which is a real difference in air density on takeoff.
Airlines flying IAH to ORD
3 airlines appear on this route in the open route dataset, 3 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| NK | Spirit Airlines | NKS | Spirit Wings | Active |
| UA | United Airlines | UAL | United | Active |
| US | US Airways | USA | U S Air | Active |
A further 1 carrier sell this pair as a codeshare without operating it: AA.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Houston from Chicago?
George Bush Intercontinental Airport (IAH) and Chicago O'Hare International Airport (ORD) are 1,491 km (926 mi, 805 nautical miles) apart in a straight line.
How long is the flight from IAH to ORD?
A typical nonstop flight between IAH and ORD takes about 2h 20m. Actual times vary with aircraft type, winds and routing.
What direction is ORD from IAH?
Chicago O'Hare International Airport (ORD) lies roughly northeast of George Bush Intercontinental Airport (IAH).
Which airlines fly IAH to ORD?
3 airlines appear on the IAH-ORD route in the open dataset, including Spirit Airlines, United Airlines, US Airways.
Related routes
Other routes from Houston (IAH):
Other routes from Chicago (ORD):
IAH airport code · ORD airport code · Busiest airports worldwide