Great-circle route ORD ↔ RDU. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| ORD → RDU Chicago to Raleigh-durham |
77/wk | Daily | American Airlines, United Airlines |
| RDU → ORD Raleigh-durham to Chicago |
77/wk | Daily | American Airlines, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 653,485 passengers on 6,442 flights between ORD and RDU — about 1,791 a day — filling 77% of the 844,407 seats flown. United Air Lines Inc. carried the most passengers (46%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
2 airlines fly the ORD–RDU nonstop, including American Airlines, United Airlines.
Recent scheduled departures on this route have used the Embraer 175, Boeing 737, Boeing 737-900, Embraer 170 and 4 other types.
Aircraft assignments change by season and by time of day.
The distance between Chicago O'Hare International Airport and Raleigh Durham International Airport is 646 miles, or 1,040 kilometres.
| Great-circle distance | 646 mi |
| Kilometres | 1,040 km |
| Nautical miles | 561 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 2 airlines fly the route nonstop, with about 154 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 1h 53m in the air. That is a great-circle estimate from the 646-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 77 a week from Chicago to Raleigh-durham and 77 a week from Raleigh-durham to Chicago, from our most recent schedule sample.
American Airlines, United Airlines.
In 2025, airlines reported 653,485 passengers on 6,442 scheduled flights between ORD and RDU — about 1,791 a day — filling 77% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Embraer 175, Boeing 737, Boeing 737-900, Embraer 170. Assignments change by season and by time of day.
