Cheap Flights from Dublin to Chicago

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Find the cheapest month or even day of the year to fly to Chicago

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Flight deals from Dublin to Chicago

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

Find the cheapest month to fly from Dublin to Chicago

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

Direct flights from Dublin to Chicago

Alternative Dublin to Chicago routes

Looking for the cheapest, fastest or easiest route from Dublin to Chicago? You could fly into the following airports instead.

Dublin to Chicago: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 14,706
Cheapest month to flyMay
Average flight time8 hrs, 18 mins
Most popular airlineAmerican Airlines
Average flights per week79

Finding cheap flights from Dublin to Chicago: Frequently asked questions

There are 4 airports in Chicago: Chicago Midway, Chicago O'Hare International, Chicago Dupage County, and Chicago Rockford.
The best price we found for a return flight from Dublin to Chicago is ج.م.‏ 19,224. 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 18 minutes is the average flight time from Dublin to Chicago.
American Airlines, Aer Lingus and British Airways fly direct from Dublin to Chicago.
As of April 2025, there are 158 flights per week flying from Dublin to Chicago.
The cheapest month to fly from Dublin to Chicago is usually April 2025.
If you're flying from Dublin Airport, the cheapest airport near Chicago is Chicago O'Hare International – which is 25.4 km away from the centre of Chicago. We've found flights into this airport from ج.م.‏ 19,224.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Dublin Airport to Chicago on Saturday, 13 September 2025.
Yes – the average flight time is 8 hours and 18 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 Chicago 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 Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 8°C. July is typically the warmest month in Chicago, when it usually averages around 26°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is August.
Currently, SWISS and Aer Lingus offer the cheapest flight tickets to Chicago.

Travelling from Dublin Airport (DUB) to Chicago: what you need to know

  • The average duration of a direct flight from Dublin Airport to Chicago is 7 hours 32 minutes.

  • The timezone in Chicago is UTC-5. The city is 5 hours behind Dublin, where Dublin Airport is located.

  • With 31 weekly flights between the two airports, Dublin Airport (DUB) to O'Hare International Airport (ORD) is the busiest route. American Airlines operates the earliest flight at 09:30. If you'd like to make the most of your day before jetting off, the latest departure from DUB to ORD is with Aer Lingus at 16:40.

  • Give yourself plenty of time to make your flight from DUB to Chicago. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.

  • Be prepared for longer queues in popular months like August and other peak periods. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a wise move.

  • You can catch a direct flight from Dublin Airport to Chicago that arrives at O'Hare International Airport (ORD).

  • There's a good selection of airlines offering direct flights from Dublin Airport to Chicago, including:

  • We make it a breeze to find a flight from DUB to Chicago that includes a stopover. To see the options, deselect 'Direct flights only.' Then, simply select a flight that has a stop long enough to see the sights of the city of your choice. Major stopovers include:

    • Minneapolis-St. Paul International Airport (MSP)

    • Philadelphia International Airport (PHL)

    • Logan International Airport (BOS)

  • To enter United States for tourism purposes, you will require an ETA if you hold a passport from Ireland. However, visa rules can change and other documentation may be needed depending on the length and purpose of your stay. Always check the most recent guidelines before booking your cheap ticket from Dublin Airport to Chicago.

  • DUB is around 21 kilometres from central Dublin. If you're ride-sharing, catching a cab or driving from the centre, it'll take 29 minutes or so to get there, depending on the traffic. If you're using public transport, expect the journey time to be around 2 hours and 9 minutes.

  • Catching an early flight from Dublin Airport to Chicago? Avoid the hassle of rushing to the airport (and sneak in some extra snooze time) by picking one of these stays near DUB:

How to find the cheapest flights from Dublin Airport (DUB) to Chicago

  • The best price we've seen for a one-way ticket from Dublin Airport to Chicago is ج.م.‏ 14,706. The cheapest price for a return flight is ج.م.‏ 19,224. Keep in mind fares can change due to availability at the time of booking.

  • Get cheap tickets from DUB to Chicago by booking at least 9 months ahead. Based on our research, that's the sweet spot for finding a bargain.

  • May is the cheapest month for tickets from Dublin Airport to Chicago. If you want to travel during a different time of year, the 'Whole month' tool will give you the lowest prices across every month.

  • Log into your online account or use the app to set up a Price Alert. You'll get notified right away if there's a better deal on this route. It's simple to do, and it'll save you time looking for cheap flight tickets from DUB to Chicago every day.

  • Use the filters to tailor your flights from Dublin Airport to Chicago. Simply enter your ideal arrival and departure times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to get the best deals.

Airports in Chicago

O'Hare International Airport (ORD)

Chicago Midway International Airport (MDW)

Best time to go to Chicago

  • August is the busiest month for flights from Dublin Airport to Chicago. To avoid the crowds, travel to Chicago in February when it's quieter.

  • The warmest month in Chicago is July, with the temperature ranging between 15ºC and 29ºC. Book your flights from Dublin Airport to Chicago in this month if this is the type of weather you enjoy.

  • January has average temperatures of between -12ºC and 3ºC. Look for cheap flights from DUB to Chicago sometime around then if you'd rather travel in cooler conditions.

More about Chicago

  • When it comes to searching for somewhere to rest your head, you'll find the best stays in Chicago right here. Browse these options after locking in your flight from Dublin Airport to Chicago:

  • Every great holiday has to include a little sightseeing. Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier are essential stops on your Chicago itinerary.

Complete your Chicago trip with a car rental

  • Choose one of our car rentals in Chicago and explore the city at your leisure. Easily compare options in one place to find the ideal ride once you've booked your hotel and cheap flights from Dublin Airport to Chicago.

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