€277 Find Cheap Flights from Chicago O'Hare Airport to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Ireland departing on 23/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Best Ireland Flight Deals from O'Hare Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop€523
Cork
Cork1 stop€652
Shannon
Shannondirect€593
Knock
Knock2 stops€919
Milltown (Kerry)
Milltown (Kerry)1 stop€736
Donegal
Donegal3 stops€773
Dublin
Dublin1 stop€523
Cork
Cork1 stop€652
Shannon
Shannondirect€593
Knock
Knock2 stops€919
Milltown (Kerry)
Milltown (Kerry)1 stop€736
Donegal
Donegal3 stops€773

Cheap Flights from O'Hare Intl to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from O'Hare Intl to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from O'Hare Intl to Ireland

Tue, 27 Oct - Fri, 6 Nov
Scandinavian Airlines Logo
20:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
Scandinavian Airlines Logo
19:05 - 16:45
DUB
-
ORD
27h 40m
1 stop
€523Scandinavian Airlines
Sat, 17 Oct - Sun, 25 Oct
Scandinavian Airlines Logo
19:15 - 18:25
ORD
-
DUB
17h 10m
2 stops
Scandinavian Airlines Logo
19:05 - 17:45
DUB
-
ORD
27h 40m
1 stop
€534Scandinavian Airlines
Wed, 28 Oct - Tue, 10 Nov
TAP AIR PORTUGAL Logo
20:00 - 23:20
ORD
-
DUB
22h 20m
1 stop
TAP AIR PORTUGAL Logo
16:55 - 15:30
DUB
-
ORD
28h 35m
1 stop
€548TAP AIR PORTUGAL
Wed, 21 Oct - Tue, 3 Nov
TAP AIR PORTUGAL Logo
18:00 - 00:05
ORD
-
DUB
24h 05m
1 stop
TAP AIR PORTUGAL Logo
16:55 - 15:30
DUB
-
ORD
28h 35m
1 stop
€549TAP AIR PORTUGAL
Mon, 8 Jun - Mon, 15 Jun
Multiple Airlines Logo
20:20 - 08:20
ORD
-
DUB
30h 00m
2 stops
Multiple Airlines Logo
09:40 - 09:00
DUB
-
ORD
29h 20m
2 stops
€550Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
United Airlines Logo
18:05 - 07:30
ORD
-
SNN
7h 25mdirect
United Airlines Logo
09:30 - 11:50
SNN
-
ORD
8h 20mdirect
€593United Airlines
Tue, 1 Sep - Tue, 15 Sep
United Airlines Logo
16:00 - 10:15
ORD
-
SNN
12h 15m
2 stops
United Airlines Logo
09:30 - 11:50
SNN
-
ORD
8h 20mdirect
€601United Airlines
Sun, 13 Sep - Wed, 7 Oct
Multiple Airlines Logo
21:00 - 17:30
ORD
-
KIR
14h 30m
1 stop
Multiple Airlines Logo
17:45 - 11:50
KIR
-
ORD
24h 05m
2 stops
€736Multiple Airlines
Sun, 19 Jul - Wed, 29 Jul
Aer Lingus Logo
21:00 - 14:00
ORD
-
CFN
11h 00m
1 stop
Aer Lingus Logo
07:55 - 19:54
CFN
-
ORD
17h 59m
2 stops
€938Aer Lingus
Sun, 19 Jul - Wed, 29 Jul
Aer Lingus Logo
15:45 - 20:00
ORD
-
CFN
22h 15m
1 stop
Aer Lingus Logo
07:55 - 14:00
CFN
-
ORD
12h 05m
1 stop
€954Aer Lingus
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Ireland flights

Get data-powered insights and trends into flights from O'Hare Intl to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Chicago O'Hare Intl Airport to Ireland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from Chicago O'Hare Intl Airport found in the last 72 hours was to Dublin, at €781 return. The most popular route is from Chicago O'Hare Intl Airport (ORD) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 72 hours was €781.

What is the cheapest time of day to fly to Ireland?

The average price for all round-trip flights from Chicago O'Hare Intl Airport to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ireland is generally in the evening, when retur flights cost €671 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally at night, which is peak travel time and where the average cost of a ticket is €855.

Can I save money by flying with a stopover from Chicago O'Hare Intl Airport to Ireland?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at €833 on average.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Ireland is October, when tickets cost €88 (return) on average. On the other hand, the most expensive months are June and August, when the average cost of return tickets is €2,078 and €1,780 respectively.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Ireland?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Ireland clicked on KAYAK for each day over the last 12 months.

For Chicago O'Hare Airport to Ireland, Thursday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Ireland back to Chicago O'Hare Airport, the best deals are generally found on Thursday, with Sunday being the most expensive.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Chicago O'Hare Intl Airport to Ireland, you should book around 4 weeks before departure, which saves you about 26% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight€277
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly and prices are also 2% lower on average.
Flight from Chicago O'Hare Airport to Dublin

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago O'Hare Airport to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago O'Hare Airport to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago O'Hare Airport to Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago O'Hare Airport to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Chicago O'Hare Airport to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago O'Hare Airport to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Chicago O'Hare Airport to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ireland

  • Looking for a cheap flight? 25% of our users found tickets from Chicago O'Hare Airport to the following destinations at these prices or less: Dublin €494 one-way - €888 round-trip

Reviews of the top airline flying from O'Hare Intl to Ireland

 
Need help choosing which airline to fly with from O'Hare Intl to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Aer LingusOverall score based on 1538 reviews
7.4Boarding
6.6Food
7.0Entertainment
7.2Comfort
8.1Crew
Airline reviews

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

2.0 MediocreAnonymous, Apr 2026
JFK - DUB
Read more Aer Lingus reviews

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

OK overall. Flight was delayed Crew on flight was good

Satin first class and absolutely no snacks are offered. Surface was awful.

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

This was the smoothest flight I've ever taken with any airline, including Aer Lingus. Typically, there are moments when I feel afraid, but from take off (miraculously seamless!) to cruise, to landing this was a perfect flight. Thank you!

Poor. Plane left EWR late hence missed connecting flight in Dublin. No pro active info from flight staff on connection, only when probed a couple of lies on where we would dock, and on lilelyhood catching connecting flight. Lies as they will have known our EWR-DUB would be parked furthest away from the transit spit - lying it would be next to the AMS flight.

The seat area was way too compact. The person in front reclined, and the TV screen was right in my face. There was a metal box secured to the floor in my foot area, further limiting space. Food was OK. The last service was provided too late in the flight, so the crew was rushing at the end. The ticket counter in the Naples airport was extremely slow. The staff on the flight was friendly.

delayed flight stayed whole night at washington Dallas airport at seats , uncomfortable . i am senior citizen , very tired , worst travel.

I heard that the pilots were actually leprechauns, but I was not able to confirm. Can you please provide documentation if this is true?

The check in process at the front desk felt slow and it was frustrating that we could not check in online. Everything about the actual flight was great, including very kind flight attendants and a nice larger bathroom. Only thing is that it was very cold in the plane!

Everything you need to know for your flight from O'Hare Intl to Ireland

Information on your arrival and departure airports