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Cheap flights from Chicago O'Hare Intl Airport to Dublin from £166

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Dublin are usually found in January or February, booked 58 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from O'Hare Intl to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 September 2025.

Round-trip from

£359

One-way from

£166

Popular in

June

Cheapest in

January

Average price

£511

Good round-trip deal

£468 or less

Good one-way deal

£348 or less
Lufthansa
  • Lufthansa
  • 27/10-5/11
  • 1 total stop
  • 28h 30m total
  • Chicago to Dublin
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WestJet
  • WestJet
  • 6/10
  • 1 total stop
  • 35h 20m total
  • Chicago to Dublin
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Highest demand for flights based on searches. 16% potential increase in price (£77 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Dublin.
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Price to beat on a one-way flight from Chicago O'Hare Intl to Dublin.
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Find flight deals from O'Hare Intl to Dublin

Cheapest flights from O'Hare Intl to Dublin
Explore the most affordable flight options available from O'Hare Intl to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Mon 27/1019:35ORD - DUB
Nonstop7h 35mMultiple Airlines
Wed 5/1105:10DUB - ORD
1 stop20h 55mMultiple Airlines
Deal found 12/9£359
Sun 12/1020:20ORD - DUB
Nonstop7h 25mUnited Airlines
Fri 24/1009:20DUB - ORD
1 stop16h 44mUnited Airlines
Deal found 12/9£360
Wed 29/1018:20ORD - DUB
1 stop10h 35mUnited Airlines
Tue 4/1110:40DUB - ORD
Nonstop8h 50mUnited Airlines
Deal found 11/9£360
Mon 27/1020:20ORD - DUB
1 stop17h 00mScandinavian Airlines
Mon 3/1119:05DUB - ORD
2 stops32h 14mScandinavian Airlines
Deal found 12/9£361
Wed 8/1010:45ORD - DUB
1 stop14h 25mUnited Airlines
Wed 15/1009:20DUB - ORD
1 stop16h 44mUnited Airlines
Deal found 12/9£362
Mon 10/1119:20ORD - DUB
1 stop17h 00mScandinavian Airlines
Mon 17/1120:20DUB - ORD
2 stops50h 25mScandinavian Airlines
Deal found 11/9£362
Tue 7/1020:20ORD - DUB
Nonstop7h 25mUnited Airlines
Thu 16/1009:50DUB - ORD
1 stop29h 19mUnited Airlines
Deal found 10/9£363
Sun 12/1008:50ORD - DUB
1 stop16h 20mUnited Airlines
Tue 21/1009:50DUB - ORD
1 stop15h 34mUnited Airlines
Deal found 11/9£364
Tue 14/1020:20ORD - DUB
Nonstop7h 25mUnited Airlines
Wed 22/1011:35DUB - ORD
Nonstop8h 00mUnited Airlines
Deal found 11/9£367
Mon 10/1118:35ORD - DUB
Nonstop7h 35mUnited Airlines
Mon 17/1110:40DUB - ORD
Nonstop8h 50mUnited Airlines
Deal found 11/9£368

Cheapflights Fare Finder

 
Customise your flight search to find flights from O'Hare Intl to Dublin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Dublin that are best for you.

Fly from

O'Hare Intl

Fly to

Dublin

Route

Depart

Return

Price

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 8/10

14:39-07:10

1 stop10h 31m

Dublin

Wed 15/10

09:20-20:04

1 stop16h 44m

£362

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 27/10

19:35-08:10

Nonstop7h 35m

Dublin

Mon 3/11

09:00-07:56

1 stop28h 56m

£364

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 28/10

19:35-08:10

Nonstop7h 35m

Dublin

Mon 17/11

09:00-07:56

1 stop28h 56m

£364

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 23/11

18:35-08:10

Nonstop7h 35m

Dublin

Tue 2/12

10:40-13:30

Nonstop8h 50m

£364

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 12/10

20:20-09:45

Nonstop7h 25m

Dublin

Tue 21/10

09:50-15:04

1 stop11h 14m

£365

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 17/11

19:20-10:45

2 stops33h 25m

Dublin

Tue 25/11

11:30-16:45

2 stops35h 15m

£366

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 28/10

14:39-10:20

1 stop14h 41m

Dublin

Sun 16/11

09:00-17:48

1 stop14h 48m

£367

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 28/10

16:56-15:45

2 stops17h 49m

Dublin

Tue 18/11

06:00-16:28

2 stops16h 28m

£370

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 8/10

08:50-07:10

1 stop16h 20m

Dublin

Tue 14/10

11:35-13:35

Nonstop8h 00m

£371

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 12/11

18:35-08:10

Nonstop7h 35m

Dublin

Sun 16/11

09:00-15:10

1 stop12h 10m

£371

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 20 results
1
2

Best time to book a flight from O'Hare Intl to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from O'Hare Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Dublin

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Dublin?

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Dublin. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Dublin, you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Dublin?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Dublin (average of £71). Flying from Chicago O'Hare Intl Airport to Dublin in August is currently the most expensive (average of £93). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to DUB?

Find hourly flight availability from O'Hare Intl to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.

It’s optimal to fly from Chicago O'Hare Intl Airport to Dublin at midday. By choosing this option you can save up to 2% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dublin. Reviews last updated 12 September 2025.
Check out reviews from past customers who have flown with Aer Lingus from Chicago O'Hare Intl Airport to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,271 reviews
Check prices

Entertainment

6.9

Food

6.5

Boarding

7.3

Comfort

7.1

Overall

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,271 reviews
Aer Lingus
7.2
Good
1,271 reviews
Check prices

Entertainment

6.9

Food

6.5

Boarding

7.3

Comfort

7.1

Overall

7.2

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Dublin from Chicago O'Hare Intl?

    Dublin (DUB), located 5.7 mi from the city center, is the airport you fly into when you book flights from Chicago O'Hare Intl to Dublin. 1 airline have flights to Dublin from Chicago O'Hare Intl on a regular basis. Booking flights from Chicago O'Hare Intl to Dublin should not be difficult; the airport handles an average of 19 inbound flights from Chicago O'Hare Intl per day.

  • How long is the flight from Chicago O'Hare Intl Airport to Dublin?

    For as low as £360, United Airlines can have you in Dublin from Chicago O'Hare Intl Airport in 10h 35m. Airlines will cover a distance of 3661 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Chicago O'Hare Intl Airport to Dublin round-trip?

    Currently priced at £355, Aer Lingus will fly you from Chicago O'Hare Intl Airport to Dublin and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip. You may be able to fly from Chicago O'Hare Intl Airport to Dublin for 31% less than the average price by searching for this airline.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Dublin?

    No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to Dublin consider choosing Air France (89%), Iberia (68%) or American Airlines (68%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Dublin?

    Looking for the cheapest flight from Chicago O'Hare Intl Airport to Dublin? While on average our users pay £497, our data indicates the cheapest price to be £291. The most popular route (Chicago O'Hare Intl - Dublin), is priced around £405.

  • Can I find deals for flights from O'Hare Intl to Dublin that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Dublin flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Dublin.

  • Can I find deals for business class flights from O'Hare Intl to Dublin?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Dublin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Dublin?

    Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Dublin (average of £71). Flying from Chicago O'Hare Intl Airport to Dublin in August is currently the most expensive (average of £93). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Wicklow
Athlone
Tullamore
Bray
Cavan
Drogheda
Malahide
Portmarnock
Enniscorthy
Dundalk
Mullingar
Arklow
Carlingford
Kildare
Maynooth
Swords
Castleknock
Naas

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from O'Hare Intl to Dublin

Discover the top airline that operate flights from O'Hare Intl to Dublin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£355Average£494FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from O'Hare Intl to Dublin?

Cheapflights makes it easy to find O'Hare Intl to Dublin flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from O'Hare Intl to Dublin.

Can Cheapflights find flights from O'Hare Intl to Dublin with no change fees?

Yes! Cheapflights helps users easily find flights from O'Hare Intl to Dublin with no change fees.

Can Cheapflights notify me if prices for flights from O'Hare Intl to Dublin become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dublin from O'Hare Intl today and book when prices fit your budget.

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