What is the cheapest airline that flies from Chicago O'Hare Intl to Northern Ireland?

British Airways and Aer Lingus are the most popular carriers operating from Chicago O'Hare Intl to Northern Ireland

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Northern Ireland?

As of August 2026, there is 1 operator available to choose from for flights from Chicago O'Hare Intl Airport to Northern Ireland.

How old do you have to be to fly from Chicago O'Hare Intl Airport to Northern Ireland?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Northern Ireland.

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

The travel and health documents required for your trip to Northern Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$313 Cheap Flights from Chicago O'Hare Intl Airport to Northern Ireland in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport to Northern Ireland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:25 pm - 4:20 pmORD Chicago O'Hare Intl-BFS Belfast Intl

14h 55m2 stops Reykjavik Keflavik Intl Glasgow Intl

6:40 am - 6:15 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

41h 35m3 stops London Stansted Milan Malpensa Reykjavik Keflavik Intl

$760Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

7:25 pm - 7:30 pmORD Chicago O'Hare Intl-BFS Belfast Intl

18h 05m2 stops Reykjavik Keflavik Intl Manchester

9:10 pm - 9:25 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

30h 15m3 stops Newcastle upon Tyne Gdansk Rebiechowo Reykjavik Keflavik Intl

$769Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

7:25 pm - 11:20 pmORD Chicago O'Hare Intl-BFS Belfast Intl

21h 55m3 stops Reykjavik Keflavik Intl Glasgow Intl London Stansted

6:40 am - 6:15 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

41h 35m3 stops London Stansted Milan Malpensa Reykjavik Keflavik Intl

$789Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

7:25 pm - 10:25 pmORD Chicago O'Hare Intl-BFS Belfast Intl

21h 00m3 stops Reykjavik Keflavik Intl Manchester Amsterdam Schiphol

9:10 pm - 9:25 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

30h 15m3 stops Newcastle upon Tyne Gdansk Rebiechowo Reykjavik Keflavik Intl

$816Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

7:25 pm - 7:30 pmORD Chicago O'Hare Intl-BFS Belfast Intl

18h 05m2 stops Reykjavik Keflavik Intl Manchester

10:20 am - 6:15 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

13h 55m2 stops Manchester Reykjavik Keflavik Intl

$837Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

7:25 pm - 9:50 pmORD Chicago O'Hare Intl-BFS Belfast Intl

20h 25m2 stops Reykjavik Keflavik Intl Glasgow Intl

8:25 pm - 2:15 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

47h 50m3 stops London Stansted Barcelona-El Prat Amsterdam Schiphol

$853Multiple Airlines

Fri, Sep 25 - Fri, Oct 2

7:25 pm - 5:50 pmORD Chicago O'Hare Intl-BHD Belfast City

16h 25m2 stops Reykjavik Keflavik Intl Glasgow Intl

7:00 am - 7:48 pmBHD Belfast City-ORD Chicago O'Hare Intl

18h 48m2 stops London Gatwick Toronto Pearson Intl

$857Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

7:25 pm - 7:40 pmORD Chicago O'Hare Intl-BFS Belfast Intl

18h 15m2 stops Reykjavik Keflavik Intl Glasgow Intl

10:30 am - 6:15 pmBFS Belfast Intl-ORD Chicago O'Hare Intl

13h 45m2 stops Glasgow Intl Reykjavik Keflavik Intl

$860Multiple Airlines

Tue, Sep 22 - Tue, Sep 29

5:10 pm - 10:20 amORD Chicago O'Hare Intl-BHD Belfast City

11h 10m1 stop London Heathrow

7:40 am - 1:45 pmBHD Belfast City-ORD Chicago O'Hare Intl

12h 05m1 stop London Heathrow

$886British Airways

Sun, Nov 15 - Thu, Nov 19

5:10 pm - 10:45 amORD Chicago O'Hare Intl-BHD Belfast City

11h 35m1 stop London Heathrow

7:40 am - 1:45 pmBHD Belfast City-ORD Chicago O'Hare Intl

12h 05m1 stop London Heathrow

$896British Airways

Sun, Nov 15 - Thu, Nov 19

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British Airways flights from Chicago O'Hare Intl Airport to Northern Ireland

Our best British Airways deals on Chicago O'Hare Intl Airport to Northern Ireland flight tickets

British Airways

Sep 22

ORD5:00 pmChicago O'Hare Intl

11h 45m

1 stop

BHD10:45 amBelfast City

Sep 29

BHD9:40 amBelfast City

12h 15m

1 stop

ORD3:55 pmChicago O'Hare Intl

$920

British Airways

Sep 22

ORD10:11 amChicago O'Hare Intl

16h 49m

2 stops

BHD9:00 amBelfast City

Sep 29

BHD6:30 amBelfast City

15h 25m

1 stop

ORD3:55 pmChicago O'Hare Intl

$945

British Airways

Sep 23

ORD3:50 pmChicago O'Hare Intl

15h 45m

2 stops

BHD1:35 pmBelfast City

Sep 27

BHD7:10 pmBelfast City

24h 40m

1 stop

ORD1:50 pmChicago O'Hare Intl

$995

American Airlines flights from Chicago O'Hare Intl Airport to Northern Ireland

Our best American Airlines deals on Chicago O'Hare Intl Airport to Northern Ireland flight tickets

American Airlines

Sep 23

ORD8:50 pmChicago O'Hare Intl

12h 50m

1 stop

BHD3:40 pmBelfast City

Sep 27

BHD6:30 amBelfast City

11h 55m

1 stop

ORD12:25 pmChicago O'Hare Intl

$988

American Airlines

Sep 27

ORD8:50 pmChicago O'Hare Intl

11h 45m

1 stop

BHD2:35 pmBelfast City

Oct 4

BHD6:30 amBelfast City

16h 45m

1 stop

ORD5:15 pmChicago O'Hare Intl

$993

American Airlines

Sep 27

ORD1:35 pmChicago O'Hare Intl

14h 55m

2 stops

BHD10:30 amBelfast City

Oct 4

BHD11:00 amBelfast City

12h 15m

1 stop

ORD5:15 pmChicago O'Hare Intl

$998

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 9/22

7:25 pm-4:20 pm

2 stops14h 55m

Belfast Intl

Tue 9/29

6:40 am-6:15 pm

3 stops41h 35m

$760

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 9/24

7:25 pm-7:30 pm

2 stops18h 05m

Belfast Intl

Thu 10/1

9:10 pm-9:25 pm

3 stops30h 15m

$769

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 9/22

7:25 pm-11:20 pm

3 stops21h 55m

Belfast Intl

Tue 9/29

6:40 am-6:15 pm

3 stops41h 35m

$789

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 9/24

7:25 pm-10:25 pm

3 stops21h 00m

Belfast Intl

Thu 10/1

9:10 pm-9:25 pm

3 stops30h 15m

$816

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 9/24

7:25 pm-7:30 pm

2 stops18h 05m

Belfast Intl

Thu 10/1

10:20 am-6:15 pm

2 stops13h 55m

$837

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Fri 9/25

7:25 pm-9:50 pm

2 stops20h 25m

Belfast Intl

Fri 10/2

8:25 pm-2:15 pm

3 stops47h 50m

$853

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Tue 9/22

7:25 pm-5:50 pm

2 stops16h 25m

Belfast City

Tue 9/29

7:00 am-7:48 pm

2 stops18h 48m

$857

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 9/22

7:25 pm-7:40 pm

2 stops18h 15m

Belfast Intl

Tue 9/29

10:30 am-6:15 pm

2 stops13h 45m

$860

Quickest round-trip

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 11/15

5:10 pm-10:20 am

1 stop11h 10m

Belfast City

Thu 11/19

7:40 am-1:45 pm

1 stop12h 05m

$886

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 11/15

5:10 pm-10:45 am

1 stop11h 35m

Belfast City

Thu 11/19

7:40 am-1:45 pm

1 stop12h 05m

$896

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Northern 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

Prices

Airlines

Can stopping save me money on Chicago O'Hare Intl Airport to Northern Ireland flights?

You could potentially save up to 18% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Northern Ireland flight.

Cheap Chicago O'Hare Intl Airport to Northern Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Northern Ireland

Fastest flight time	11h 35m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Northern Ireland takes 11h 35m

There are no direct flights from Chicago O'Hare Intl Airport to Northern Ireland. There are no popular flight routes from Chicago O'Hare Intl Airport to Northern Ireland.

Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Northern Ireland

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Northern Ireland?
Prices for flights from Chicago O'Hare Intl Airport to Northern Ireland are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Northern Ireland?
As of August 2026, there is 1 operator available to choose from for flights from Chicago O'Hare Intl Airport to Northern Ireland.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Northern Ireland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The travel and health documents required for your trip to Northern Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Chicago O'Hare Intl Airport to Northern Ireland

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Northern Ireland with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $629	Free Cancellation	Rating 6.7 8,161 reviews		Search British Airways flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Northern Ireland. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Northern Ireland from Chicago with this policy.

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

Once all potential Chicago to Northern Ireland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Northern 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.