Cheap flights from Chicago O'Hare International to Dublin

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Flight deals from Chicago O'Hare International to Dublin

Looking for a cheap last-minute deal or the best round-trip flight from Chicago O'Hare International to Dublin? Find the lowest prices on one-way and round-trip tickets right here.

When is the cheapest time to fly from Chicago O'Hare International to Dublin?

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to Dublin flights are currently cheapest in October.

Direct flights from Chicago O'Hare International to Dublin

Chicago O'Hare International to Dublin: Alternative routes

Compare routes from Chicago O'Hare International to Dublin below. You may find an airport to fly into that's cheaper, faster, or easier than Dublin.

Chicago to Dublin: Flight information

The things to know before you go.
Cheapest flight foundC$541
Cheapest month to flyOctober
Average flight time7 hrs, 23 mins
Most popular airlineAmerican Airlines
Average flights per week79

Finding cheap flights from Chicago O'Hare International to Dublin: Frequently asked questions

The best price we found for a round-trip flight from Chicago O'Hare International to Dublin is C$541. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
7 hours and 23 minutes is the average flight time from Chicago O'Hare International to Dublin.
American Airlines, Aer Lingus and British Airways fly direct from Chicago O'Hare International to Dublin.
There are 79 flights per week flying from Chicago O'Hare International to Dublin, as of April 2025.
The cheapest month to fly from Chicago O'Hare International to Dublin is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to Dublin Airport on Tuesday, October 21, 2025.
Yes – the average flight time is 7 hours and 23 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Dublin but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Dublin is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Scandinavian Airlines and Aer Lingus offer the cheapest flight tickets to Dublin.

Flying from O'Hare International Airport (ORD) to Dublin Airport (DUB): what you need to know

  • Around 7 hours 30 minutes is how long you can expect to be travelling on a direct flight from O'Hare International Airport to Dublin Airport.

  • The timezone in Dublin is UTC+0, which is five hours ahead of Chicago.

  • Flights from ORD to DUB start from 15:45 — the first with Aer Lingus. The latest departure is at 22:35 with American Airlines. Overall, there are 30 weekly O'Hare International Airport to Dublin Airport flights.

  • Get to the airport on time so you don't miss your ORD to DUB flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

  • You can expect bigger queues during popular months such as August. Arriving up to four hours ahead of international flights and two hours for domestic departures is a wise move.

  • With direct flights from O'Hare International Airport to Dublin Airport operated by a number of airlines, flying to Dublin (and then other destinations in Ireland) is easy. You can fly nonstop with:

  • The airline that serves the most passengers on this route is American Airlines.

  • With 67.31% of services landing as planned, American Airlines is the most punctual carrier operating ORD to DUB flights.

  • Think about adding a stopover when booking your ticket from O'Hare International Airport to Dublin Airport. Simply uncheck 'Direct flights only' to break up your journey, or perhaps explore a new destination along the way. Check out these options between ORD and DUB:

    • Logan International Airport

    • Bradley International Airport

    • Pearson International Airport

How to find the cheapest flights from O'Hare International Airport (ORD) to Dublin Airport (DUB)

  • Right now, C$285 is the lowest price we've found for a one-way O'Hare International Airport to Dublin Airport flight. The best price for a return ticket is C$541. Keep in mind that fares can change due to availability when booking.

  • To pick up cheap tickets from ORD to DUB, book your trip ten months before your planned departure.

  • Plan your trip for September. That's the cheapest month for flights from O'Hare International Airport to Dublin Airport. If you have flexibility with your dates, try out the 'Whole month' tool to see the cheapest airfare across each month.

  • You don't need to check every day to see if fares have dropped when you create a Price Alert. We'll notify you as soon as there's a new deal on cheap flights from ORD to DUB.

  • Pick your ideal arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from O'Hare International Airport to Dublin Airport.

Handy information about O'Hare International Airport (ORD)

  • The address for ORD is 10000 West O'Hare.

  • When it comes to the on-time performance of O'Hare International Airport, 74.85% of flights arrive within the expected timeframe.

  • To reach O'Hare International Airport from central Chicago, it'll take around 35 minutes by car. This depends on traffic, however. It's approximately 40 kilometres from the airport to the city centre.

  • Catching public transport? Expect a journey time of around 55 minutes.

  • Booked an early flight from O'Hare International Airport to Dublin Airport? Avoid the last-minute rush to the airport (and sneak in some extra precious sleep) by choosing one of these hotels near ORD:

Arriving at Dublin Airport (DUB)

Getting from Dublin Airport (DUB) to central Dublin

  • From Dublin Airport, Dublin is approximately 21 kilometres away. It takes around 30 minutes to reach the centre driving.

  • When travelling by public transport, expect a journey of roughly 2 hours 10 minutes.

When to fly to Dublin Airport (DUB)

  • The quietest month for a flight from O'Hare International Airport to Dublin Airport is January, while August is the most popular. Choose the best time to visit Dublin based on whether you prefer a more relaxed vibe or a faster pace.

  • When booking your flight from O'Hare International Airport to Dublin Airport, consider the type of weather you like. July is the warmest month in Dublin, with the temperature ranging from 10ºC (50ºF) to 20ºC (68ºF).

  • January has average temperatures of between 1ºC (34ºF) and 9ºC (48ºF). Search for cheap tickets from ORD to DUB sometime then if you want to travel when it's cooler.

Explore more of Ireland

  • Dublin is always a good idea, but there are so many other parts of Ireland waiting to be discovered. About 225 kilometres south-west of Dublin, a visit to Cork will keep you on the move. Start with leading attractions like Blarney Castle, Fota Wildlife Park and Titanic Experience Cobh.

  • Around 10 kilometres south-west of Dublin, Tallaght is another favourite stop in Ireland. Experience the best of this destination with a visit to Church of the Incarnation, Fettercairn, 3 stuffed bears and Johnson & Perrott Fleet.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.