What Terminal Is Aer Lingus At O'hare, Aer Lingus operates out of Terminal 5 at O'Hare International Airport in Chicago. Terminal 5, also known as the International Terminal, is the primary terminal for international flights at O'Hare. 

When travellers arrive at Terminal 5, they will find a modern and spacious facility designed to handle a high volume of international passengers. The terminal offers a range of amenities, including duty-free shopping, restaurants serving a variety of cuisines, currency exchange services, and comfortable seating areas.

Passengers flying with Aer Lingus can check in for their flights at the airline's designated check-in counters in Terminal 5. The airline offers both in-person check-in and online check-in options to make the process convenient for passengers. 

After checking in, passengers can proceed through security screening and make their way to the departure gates for their flights. Aer Lingus flights departing from O'Hare typically board from gates located in Terminal 5.

Terminal 5 at O'Hare International Airport is well-equipped to handle the needs of international travellers, with amenities such as lounges, business centres, and information desks to assist passengers. The terminal also offers efficient customs and immigration processes for arriving international passengers.

Overall, Aer Lingus passengers travelling through Terminal 5 at O'Hare can expect a modern and efficient airport experience, with a range of amenities and services to make their journey as smooth as possible.