Chicago O'Hare to Dublin
3664 miles great-circle distance, typically flown in 7h 46m with 9 airlines operating direct service from Chicago O'Hare (ORD) to Dublin (DUB). Cheapest fares are usually in Jun (around $414 return), with peak prices in Jun (around $414). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Chicago O'Hare
Chicago O'Hare is one of America's two busiest hubs and the home base for both United and American — Terminals 1 and 2 belong to United, Terminal 3 to American, and Terminal 5 handles all international arrivals. The CTA Blue Line runs from a station at the airport to downtown Loop in around 45 minutes for $5. Winter weather drives chronic delays from late November through February, so build in connection padding through ORD between Thanksgiving and President's Day.
Arriving in Dublin
Dublin Airport is 10 km north of central Dublin. Aircoach and Dublin Bus 16 run direct to the centre. Aer Lingus is the dominant transatlantic carrier with US Customs and Border Protection pre-clearance — passengers clear US immigration before boarding the return flight. Cheapest US fares are November (post-summer) and January–February; peak demand is mid-June through mid-September.
Who flies ORD to DUB?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 7h 46m | Economy |
| American Airlines | AA | 7h 46m | Economy |
| British Airways | BA | 7h 46m | Economy |
| Lufthansa | LH | 7h 46m | Economy |
| Air France | AF | 7h 46m | Economy |
| KLM | KL | 7h 46m | Economy |
| ANA | NH | 7h 46m | Economy |
| Japan Airlines | JL | 7h 46m | Economy |
| Cathay Pacific | CX | 7h 46m | Economy |
9 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly ORD→DUB
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Chicago to Dublin FAQs
Direct flights from Chicago O'Hare (ORD) to Dublin (DUB) take approximately 7h 46m for the 3664-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
Jun is typically the cheapest month on this route, with one-way fares from $414. Jun is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
9 carriers operate direct service from Chicago O'Hare (ORD) to Dublin (DUB): United Airlines, American Airlines, British Airways, Lufthansa, Air France and 4 more. Frequencies vary by season and carrier — United Airlines typically operates the highest weekly count on this corridor.
Visa-free for US passport holders up to 90 days. US Customs and Border Protection pre-clearance available at Dublin and Shannon airports. Always check travel.state.gov for the latest entry requirements before booking.
Dublin (DUB) is the primary international airport for Dublin. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.