Great-circle route ORD ↔ BWI. 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. The two directions are not identical — that is normal on scheduled routes.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| ORD → BWI Chicago to Baltimore |
55/wk | Daily | American Airlines, United Airlines |
| BWI → ORD Baltimore to Chicago |
54/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 530,847 passengers on 5,249 flights between ORD and BWI — about 1,455 a day — filling 81% of the 657,803 seats flown. United Air Lines Inc. carried the most passengers (51%).
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–BWI nonstop, including American Airlines, United Airlines.
Recent scheduled departures on this route have used the Airbus A319, Embraer 170, Boeing 737, Boeing 737-800 and 4 other types.
Aircraft assignments change by season and by time of day.
The distance between Chicago O'Hare International Airport and Baltimore/Washington International Thurgood Marshall Airport is 620 miles, or 998 kilometres.
| Great-circle distance | 620 mi |
| Kilometres | 998 km |
| Nautical miles | 539 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 109 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 1h 50m in the air. That is a great-circle estimate from the 620-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 55 a week from Chicago to Baltimore and 54 a week from Baltimore to Chicago, from our most recent schedule sample.
American Airlines, United Airlines.
In 2025, airlines reported 530,847 passengers on 5,249 scheduled flights between ORD and BWI — about 1,455 a day — filling 81% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Airbus A319, Embraer 170, Boeing 737, Boeing 737-800. Assignments change by season and by time of day.
