Chicago O'Hare is the US's third-busiest airport for Europe-bound flights. According to Cirium Diio data for July 2026 , it will have an average of 54 daily departures across the pond. Inevitably, American Airlines and United Airlines will have over half of the market (52% of the flights).

Chicago O'Hare International Airport

City

Chicago

IATA/ICAO Code

ORD/KORD

State/Prov./Reg.

Illinois

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But what about European passenger operators? When writing, 17 of them are currently planned , which will be the highest number in seven years . O'Hare's portfolio of European carriers will include HiSky from Bucharest for the first time . Its first departure to the Illinois airport will be next June.

O'Hare's European Airlines With More Than A

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