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Cheap flights from Chicago to Ireland from $211

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Ireland departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

SWISS Logo
6:50 pm - 5:45 pmORD-DUB
16h 55m1 stop
SWISS Logo
1:20 pm - 4:20 pmDUB-ORD
33h 00m1 stop
$486SWISS
Find Deal
Wed, Nov 5 - Mon, Nov 10
United Airlines Logo
8:20 pm - 9:45 amORD-DUB
7h 25mnonstop
United Airlines Logo
9:20 am - 8:04 pmDUB-ORD
16h 44m1 stop
$487United Airlines
Find Deal
Sun, Oct 12 - Fri, Oct 24
Scandinavian Airlines Logo
7:20 pm - 9:25 amORD-DUB
32h 05m1 stop
Scandinavian Airlines Logo
12:30 pm - 4:45 pmDUB-ORD
34h 15m1 stop
$491Scandinavian Airlines
Find Deal
Fri, Nov 7 - Fri, Nov 14
Aer Lingus Logo
3:45 pm - 5:10 amORD-DUB
7h 25mnonstop
Aer Lingus Logo
4:40 pm - 7:00 pmDUB-ORD
8h 20mnonstop
$498Aer Lingus
Find Deal
Tue, Oct 14 - Tue, Oct 21
American Airlines Logo
5:10 pm - 3:25 pmORD-ORK
16h 15m1 stop
American Airlines Logo
7:40 am - 6:45 pmORK-ORD
17h 05m1 stop
$501American Airlines
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Mon, Nov 17 - Tue, Nov 25
Aer Lingus Logo
9:15 pm - 10:40 amORD-DUB
7h 25mnonstop
Aer Lingus Logo
11:35 am - 2:00 pmDUB-ORD
8h 25mnonstop
$505Aer Lingus
Find Deal
Wed, Oct 8 - Wed, Oct 15
American Airlines Logo
3:08 pm - 11:10 amORD-ORK
14h 02m2 stops
American Airlines Logo
7:40 am - 6:45 pmORK-ORD
17h 05m1 stop
$505American Airlines
Find Deal
Mon, Nov 17 - Tue, Nov 25
Scandinavian Airlines Logo
7:00 am - 9:25 amORD-DUB
44h 25m2 stops
Scandinavian Airlines Logo
7:05 pm - 9:05 pmDUB-ORD
31h 00m1 stop
$514Scandinavian Airlines
Find Deal
Thu, Oct 23 - Tue, Oct 28
British Airways Logo
6:45 pm - 12:25 pmORD-NOC
11h 40m1 stop
British Airways Logo
1:00 pm - 2:50 pmNOC-ORD
30h 50m1 stop
$778British Airways
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Wed, Mar 4 - Sun, Mar 8
British Airways Logo
5:10 pm - 12:25 pmORD-NOC
13h 15m1 stop
British Airways Logo
1:00 pm - 6:00 pmNOC-ORD
34h 00m1 stop
$779British Airways
Find Deal
Wed, Mar 4 - Sun, Mar 8

SWISS flights from Chicago to Ireland

Our best SWISS deals on Chicago to Ireland flight tickets
SWISS
Nov 5
ORD6:50 pmChicago O'Hare Intl
16h 55m
1 stop
DUB5:45 pmDublin
Nov 10
DUB1:20 pmDublin
33h 00m
1 stop
ORD4:20 pmChicago O'Hare Intl
$486
Find similar
SWISS
Nov 24
ORD6:35 pmChicago O'Hare Intl
7h 35m
DUB8:10 amDublin
Dec 1
DUB1:20 pmDublin
33h 00m
1 stop
ORD4:20 pmChicago O'Hare Intl
$518
Find similar
SWISS
Sep 21
ORD7:05 pmChicago O'Hare Intl
16h 45m
1 stop
DUB5:50 pmDublin
Mar 16
DUB1:20 pmDublin
33h 00m
1 stop
ORD5:20 pmChicago O'Hare Intl
$544
Find similar

United Airlines flights from Chicago to Ireland

Our best United Airlines deals on Chicago to Ireland flight tickets
United Airlines
Oct 12
ORD8:20 pmChicago O'Hare Intl
7h 25m
DUB9:45 amDublin
Oct 24
DUB9:20 amDublin
16h 44m
1 stop
ORD8:04 pmChicago O'Hare Intl
$487
Find similar
United Airlines
Oct 29
ORD6:20 pmChicago O'Hare Intl
10h 35m
1 stop
DUB9:55 amDublin
Nov 4
DUB10:40 amDublin
8h 50m
ORD1:30 pmChicago O'Hare Intl
$488
Find similar
United Airlines
Oct 26
ORD3:55 pmChicago O'Hare Intl
9h 15m
1 stop
DUB6:10 amDublin
Nov 4
DUB10:40 amDublin
8h 50m
ORD1:30 pmChicago O'Hare Intl
$489
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Ireland 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, momondo users made 832,500 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Chicago to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 11/5

6:50 pm-5:45 pm

1 stop16h 55m

Dublin

Mon 11/10

1:20 pm-4:20 pm

1 stop33h 00m

$486

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 10/12

8:20 pm-9:45 am

Nonstop7h 25m

Dublin

Fri 10/24

9:20 am-8:04 pm

1 stop16h 44m

$487

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 11/7

7:20 pm-9:25 am

1 stop32h 05m

Dublin

Fri 11/14

12:30 pm-4:45 pm

1 stop34h 15m

$491

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 10/14

3:45 pm-5:10 am

Nonstop7h 25m

Dublin

Tue 10/21

4:40 pm-7:00 pm

Nonstop8h 20m

$498

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Mon 11/17

5:10 pm-3:25 pm

1 stop16h 15m

Cork

Tue 11/25

7:40 am-6:45 pm

1 stop17h 05m

$501

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 10/8

9:15 pm-10:40 am

Nonstop7h 25m

Dublin

Wed 10/15

11:35 am-2:00 pm

Nonstop8h 25m

$505

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Mon 11/17

3:08 pm-11:10 am

2 stops14h 02m

Cork

Tue 11/25

7:40 am-6:45 pm

1 stop17h 05m

$505

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Thu 10/23

7:00 am-9:25 am

2 stops44h 25m

Dublin

Tue 10/28

7:05 pm-9:05 pm

1 stop31h 00m

$514

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 3/4

6:45 pm-12:25 pm

1 stop11h 40m

Knock Intl

Sun 3/8

1:00 pm-2:50 pm

1 stop30h 50m

$778

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 3/4

5:10 pm-12:25 pm

1 stop13h 15m

Knock Intl

Sun 3/8

1:00 pm-6:00 pm

1 stop34h 00m

$779

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Chicago to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

In general, February is the cheapest month to fly from Chicago to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $543. If you aren’t able to travel to Ireland during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $554.

What is the cheapest day to depart on your flight to Ireland?

The cheapest day to depart on your flight to Ireland is on a Tuesday when prices can be found for as low as $753. This is often the case because there is less demand to fly during this day of the week. Flights from Chicago to Ireland on a Friday will generally be more expensive and average around $828. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ireland?

According to our data, the cheapest time of day to fly to Ireland is in the morning. momondo users have found flights departing from Chicago to Ireland in the morning for as low as $714. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around $794.

What is the cheapest Chicago to Ireland flight route?

Fly from Chicago O'Hare Intl to Dublin for the best Chicago - Ireland flight prices

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $698 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Chicago for as low as $641 on momondo.

What cabin class options are available on Chicago to Ireland flights?

There are 3 cabin classes available to choose from on Chicago to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago to Ireland flights?

You could potentially save up to 10% on your flight if you consider stops on a Chicago to Ireland flight.

Cheap Chicago to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Ireland

Best Price Found

$487

Fastest flight time

7h 20m

Direct flights

Every day

Airports in Ireland

2 airports
The best one-way flight to Ireland from Chicago in the past 72 hours is $487. The best round-trip flight deal from Chicago to Ireland found on momondo in the last 72 hours is $597.
The fastest flight from Chicago to Ireland takes 7h 20m
Direct flights go from Chicago to Ireland every day.
There are 2 airports near Ireland: Dublin (DUB), Shannon (SNN)
Search flight deals

  • When did momondo last update prices for flights from Chicago to Ireland?

    Prices for flights from Chicago to Ireland refresh daily.

  • How many operators does momondo search for flights from Chicago to Ireland?

  • How old do you have to be to fly from Chicago to Ireland?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago to Ireland?

Best airlines flying from Chicago to Ireland

Compare and see reviews for airlines that fly from Chicago to Ireland with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $51Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
IcelandairPriceFrom $355Free CancellationRating
7.0
546 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $393Free CancellationRating
7.1
1,977 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $400Free CancellationRating
7.4
1,484 reviews
Search Scandinavian Airlines flights
SWISSPriceFrom $473Free CancellationRating
7.5
1,731 reviews
Search SWISS flights
Aer LingusPriceFrom $475Free CancellationRating
7.2
1,271 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $523Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
IberiaPriceFrom $523Free CancellationRating
7.0
2,929 reviews
Search Iberia flights
Turkish AirlinesPriceFrom $528Free CancellationRating
7.3
3,968 reviews
Search Turkish Airlines flights
American AirlinesPriceFrom $530Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Ireland for you.

Can I find flights from Chicago to Ireland with flexible booking policies on momondo?

Yes. All flights to Ireland from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to Ireland?

momondo helps you find the best flight between Chicago and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Chicago to Ireland right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ireland from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ireland trip

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Find better results for your trip to Ireland

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom $313
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Flights to Corkfrom $372
Flights to Knockfrom $601
Flights to Milltown (Kerry)from $436
Flights to Donegalfrom $639