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Cheap flights from Chicago O'Hare Intl Airport to Dublin from £173

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DUB
14 Nov — 21 Nov1
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 20 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 15 October 2025.

Round-trip from

£370

One-way from

£173

Popular in

June

Cheapest in

January

Average price

£491

Good round-trip deal

£463 or less

Good one-way deal

£310 or less
KLM
  • KLM
  • 26/10-2/11
  • 2 total stops
  • 24h 00m total
  • Chicago to Dublin
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 22/10
  • 1 total stop
  • 34h 00m total
  • Chicago to Dublin
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Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in October 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

Enter your travel dates to find the best prices.

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 15 October 2025.

Sun 26/1015:50ORD - DUB
1 stop12h 30mKLM
Sun 2/1108:50DUB - ORD
1 stop11h 30mKLM
Deal found 14/10£370
Sun 2/1119:20ORD - DUB
1 stop17h 00mScandinavian Airlines
Sat 15/1110:10DUB - ORD
1 stop12h 35mScandinavian Airlines
Deal found 12/10£371
Tue 11/1113:29ORD - DUB
2 stops13h 16mKLM
Sun 16/1105:55DUB - ORD
1 stop14h 25mKLM
Deal found 14/10£374
Wed 19/1118:35ORD - DUB
Nonstop7h 35mUnited Airlines
Tue 2/1210:40DUB - ORD
Nonstop8h 50mUnited Airlines
Deal found 15/10£375
Mon 10/1107:00ORD - DUB
1 stop19h 45mDelta
Mon 17/1106:00DUB - ORD
2 stops18h 11mDelta
Deal found 13/10£377
Tue 4/1110:25ORD - DUB
1 stop16h 55mDelta
Sun 9/1105:55DUB - ORD
2 stops18h 18mDelta
Deal found 13/10£378
Wed 22/1009:42ORD - DUB
1 stop17h 03mDelta
Sat 1/1105:55DUB - ORD
2 stops17h 54mDelta
Deal found 14/10£379
Sat 8/1121:10ORD - DUB
1 stop31h 10mUnited Airlines
Sun 16/1109:00DUB - ORD
1 stop30h 13mUnited Airlines
Deal found 14/10£380
Sat 27/1220:15ORD - DUB
1 stop28h 55mUnited Airlines
Sun 11/109:00DUB - ORD
2 stops39h 20mUnited Airlines
Deal found 13/10£381
Wed 5/1116:25ORD - DUB
1 stop14h 15mKLM
Sun 9/1109:45DUB - ORD
1 stop13h 01mKLM
Deal found 15/10£383
Wed 29/1017:25ORD - DUB
1 stop14h 15mDelta
Sat 8/1109:45DUB - ORD
1 stop15h 56mDelta
Deal found 14/10£384

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 15 October 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

Tue 25/11

18:35-08:10

Nonstop7h 35m

Dublin

Tue 2/12

10:40-13:30

Nonstop8h 50m

£375

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

£375

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 1/3

19:20-19:35

2 stops18h 15m

Dublin

Thu 5/3

12:30-16:55

1 stop34h 25m

£376

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 5/11

07:00-08:45

1 stop19h 45m

Dublin

Mon 10/11

06:00-18:13

2 stops18h 13m

£377

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Thu 4/12

18:35-08:10

Nonstop7h 35m

Dublin

Wed 10/12

05:10-13:10

1 stop14h 00m

£385

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Thu 6/11

18:35-08:10

Nonstop7h 35m

Dublin

Wed 12/11

09:00-15:10

1 stop12h 10m

£386

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 8/2

18:35-08:10

Nonstop7h 35m

Dublin

Sun 15/2

09:00-15:10

1 stop12h 10m

£386

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 3/3

18:35-08:10

Nonstop7h 35m

Dublin

Sat 14/3

08:00-15:10

1 stop12h 10m

£386

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 22/2

18:35-08:10

Nonstop7h 35m

Dublin

Sun 1/3

09:00-15:10

1 stop12h 10m

£386

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 11/11

18:35-08:10

Nonstop7h 35m

Dublin

Sun 16/11

09:00-09:13

1 stop30h 13m

£386

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 23 results
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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 10 October 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 20 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 £283). Flying from Chicago O'Hare Intl Airport to Dublin in June is currently the most expensive (average of £510). 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 15 October 2025.

When flying from Chicago O'Hare Intl Airport to Dublin, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 15 October 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
1,337 reviews
Check prices

Boarding

7.4

Comfort

7.1

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

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
1,337 reviews
Aer Lingus
7.2
Good
1,337 reviews
Check prices

Boarding

7.4

Comfort

7.1

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.5

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 14 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 £375, United Airlines can have you in Dublin from Chicago O'Hare Intl Airport in 7h 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 £362, 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 (88%), Iberia (77%) or American Airlines (76%) 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 £440, our data indicates the cheapest price to be £310. The most popular route (Chicago O'Hare Intl - Dublin), is priced around £621.

  • 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 £283). Flying from Chicago O'Hare Intl Airport to Dublin in June is currently the most expensive (average of £510). 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
Athlone
Wicklow
Tullamore
Cavan
Drogheda
Malahide
Portmarnock
Enniscorthy
Dundalk
Mullingar
Bray
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 15 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£362Average£503FlexibilityNo 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?

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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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