Cheap Flights from Dublin to Chicago O'Hare International

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Compare Dublin to Chicago O'Hare International flight deals

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

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Flight deals from Dublin to Chicago O'Hare International

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

Find the cheapest month to fly from Dublin to Chicago O'Hare International

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

Direct flights from Dublin to Chicago O'Hare International

Dublin to Chicago O'Hare International: Alternative routes

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

Dublin to Chicago: Flight information

The things to know before you go.
Cheapest flight found324 €
Cheapest month to flyOctober
Average flight time8 hrs, 20 mins
Most popular airlineAmerican Airlines
Average flights per week83

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

The best price we found for a return flight from Dublin to Chicago O'Hare International is 324 €. 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.
8 hours and 20 minutes is the average flight time from Dublin to Chicago O'Hare International.
American Airlines, Aer Lingus and British Airways fly direct from Dublin to Chicago O'Hare International.
As of April 2025, there are 82 flights per week flying from Dublin to Chicago O'Hare International.
The cheapest month to fly from Dublin to Chicago O'Hare International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Dublin Airport to Chicago O'Hare International Airport on Thursday, 30 October 2025.
Yes – the average flight time is 8 hours and 20 minutes.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago 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 Chicago O'Hare International.

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

  • 8 hours 20 minutes is the average length of a direct flight from Dublin Airport to O'Hare International Airport. Chicago is 5 hours behind Dublin and operates on the UTC-5 timezone.

  • Each week, there are 31 flights from Dublin Airport to O'Hare International Airport. If you'd like to be on board as early as possible, pick the 09:30 American Airlines flight. If you're keen to make the most of your time before you fly, the last flight from DUB to ORD is 22:35 with American Airlines.

  • Longer lines at check-in and security are more likely if you're flying during high season, so give yourself some extra breathing space. A good rule of thumb for peak times? Get there up to four hours early for international flights and at least two hours for domestic departures.

  • To break up your flight from Dublin Airport to O'Hare International Airport, think about adding a stopover. Simply uncheck 'Direct flights only' to find a city that catches your eye. The most popular stopovers on the DUB - ORD route are:

    • Pearson International Airport

    • Philadelphia International Airport

    • Montreal-Pierre Elliott Trudeau International Airport

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

  • 247 € is currently the lowest price for a one-way ticket from Dublin Airport to O'Hare International Airport. A return flight starts at 324 €. These prices can change depending on availability and demand.

  • To secure cheap tickets from DUB to ORD, book your journey 9 months before your departure date.

  • Organise your trip for May. That's the cheapest month for tickets from Dublin Airport to O'Hare International Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the cheapest airfare across every month.

  • Set up a Price Alert for cheap tickets from DUB to ORD. You don't need to check back in every day to see whether prices have fallen. We'll tell you when there's a change in price.

  • Use filters to find the perfect trip for you. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Dublin Airport to O'Hare International Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and number of stops.

Handy information about Dublin Airport (DUB)

  • Located around 21 kilometres from the centre of Dublin, Dublin Airport can be reached in about 29 minutes by car (depending on traffic). The journey on public transport is roughly 2 hours and 9 minutes.

  • Have an early flight from Dublin Airport to O'Hare International Airport? Avoid the hassle of rushing to the terminal (and enjoy a little extra shut-eye) by picking one of these hotels close to DUB:

Arriving at O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • O'Hare International Airport to the centre of Chicago is about 35 minutes in a car. It's approximately 40 kilometres away. Discover what options are available, such as car rentals, cabs or ride-sharing services.

  • If you're travelling on public transport, expect a journey of about 54 minutes.

When to fly to O'Hare International Airport (ORD)

  • The quietest month for a flight from Dublin Airport to O'Hare International Airport is February, while August is the most popular. Pick the ideal time to visit Chicago based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Before locking in your flight from Dublin Airport to O'Hare International Airport, think about the type of weather you like. July is the warmest month in Chicago, with temperatures ranging from 15ºC to 29ºC.

  • January has average temperatures of between -12ºC and 3ºC. Search for cheap tickets from DUB to ORD around that time if you want to travel when it's cooler.

More about Chicago

Complete your Chicago trip with hotels and a car rental

  • After you've secured your cheap ticket to O'Hare International Airport, browse the lowest prices and exclusive rates for hotels. You can also compare a range of car rental companies in one go to get the best car rental price for your Chicago escape.

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