The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Zurich ⇄ Chicago O'Hare International ZRH–ORD

Airlines flew 1,687 flights between Zurich, Switzerland ZRH in Zurich, CH and Chicago O'Hare International ORD in Chicago, IL in the twelve months to July 2026, both directions together: 310,777 passengers in 374,131 seats, 83% of them filled, and 31,163,892 pounds of freight. 4,443 miles, about 231 minutes in the air, on 3 airlines: Swiss International Airlines (978), United Air Lines Inc. (708), Air Alsie A/S (1).

1,687
flights, twelve months
ZRH-ORD: 839 · ORD-ZRH: 848
310,777
passengers
83% of seats filled
4,443
miles
about 231 minutes airborne
3
airlines
5 aircraft types

Flights by month both directions

046921381841/254/257/2510/251/264/261767/26
By month, as a table
flights
1/2572
2/2571
3/25118
4/25142
5/25147
6/25144
7/25184
8/25182
9/25120
10/25124
11/25119
12/25124
1/26112
2/26105
3/26126
4/26163
5/26166
6/26170
7/26176

Passengers by month

010,16820,33630,50440,6721/254/257/2510/251/264/2636,0957/26
By month, as a table
passengers
1/2513,793
2/2511,525
3/2520,352
4/2522,127
5/2526,941
6/2530,827
7/2540,672
8/2539,268
9/2526,131
10/2526,018
11/2518,443
12/2521,361
1/2618,523
2/2615,566
3/2620,753
4/2626,372
5/2629,452
6/2632,795
7/2636,095

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Swiss International Airlines LX978210,77482%scheduled passenger service
United Air Lines Inc. UA70899,99885%charter cargo service, scheduled passenger service
Air Alsie A/S 15Q1542%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 767-300/300ER70816799,998
Airbus Industrie A330-200595236110,789
Boeing 777-200ER/200LR/233LR31732088,705
Airbus Industrie A340-3006621511,280
Dassault Falcon 7X1125

ZRH → ORD this direction alone · flown January 2025 to July 2026

839 flights of 358 scheduled, 150,745 passengers in 186,197 seats, 20,100,109 pounds of freight, 57,419 pounds of mail. Swiss International Airlines 488; United Air Lines Inc. 351.

ORD → ZRH this direction alone · flown January 2025 to July 2026

848 flights of 358 scheduled, 160,032 passengers in 187,934 seats, 11,063,783 pounds of freight, 84,265 pounds of mail. Swiss International Airlines 490; United Air Lines Inc. 357; Air Alsie A/S 1.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Zurich, Switzerland ZRH and Chicago O'Hare International ORD; all routes.