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Cheap flights from Northern Ireland to Illinois from $327

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Illinois departing on 1/30. 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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Find the cheapest flights from Northern Ireland to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:05 am - 4:45 pmBFS-ORD
39h 40m2 stops
Multiple Airlines Logo
7:20 pm - 10:20 pmORD-BFS
21h 00m2 stops
$559Multiple Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
7:05 am - 4:45 pmBFS-ORD
39h 40m2 stops
Multiple Airlines Logo
7:20 pm - 10:20 pmORD-BFS
21h 00m2 stops
$561Multiple Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
6:30 am - 11:22 amBFS-ORD
34h 52m3 stops
Multiple Airlines Logo
6:30 pm - 8:25 pmORD-BFS
19h 55m2 stops
$569Multiple Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
6:30 am - 11:22 amBFS-ORD
34h 52m3 stops
Multiple Airlines Logo
6:30 pm - 8:25 pmORD-BFS
19h 55m2 stops
$639Multiple Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 22
American Airlines Logo
9:15 am - 5:00 pmBHD-ORD
13h 45m1 stop
American Airlines Logo
1:35 pm - 10:20 amORD-BHD
14h 45m2 stops
$716American Airlines
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Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
6:35 am - 4:46 pmBHD-ORD
16h 11m2 stops
American Airlines Logo
1:35 pm - 10:20 amORD-BHD
14h 45m2 stops
$722American Airlines
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Wed, Jan 14 - Sun, Jan 18
British Airways Logo
6:35 am - 7:15 pmBHD-ORD
18h 40m2 stops
British Airways Logo
9:45 pm - 2:15 pmORD-BHD
10h 30m1 stop
$779British Airways
Find Deal
Sat, Jan 10 - Sat, Jan 17
Delta Logo
5:20 pm - 5:26 pmBHD-ORD
30h 06m2 stops
Delta Logo
1:57 pm - 4:50 pmORD-BHD
20h 53m2 stops
$781Delta
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Wed, Jan 14 - Sun, Jan 18
British Airways Logo
12:25 pm - 6:45 pmBHD-ORD
12h 20m1 stop
British Airways Logo
7:49 pm - 10:40 amORD-BHD
32h 51m2 stops
$793British Airways
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Wed, Jan 14 - Sun, Jan 18
Virgin Atlantic Logo
5:30 pm - 2:15 pmBHD-ORD
26h 45m1 stop
Virgin Atlantic Logo
4:20 pm - 4:55 pmORD-BHD
18h 35m1 stop
$948Virgin Atlantic
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Mon, Jun 1 - Sun, Jun 7

American Airlines flights from Northern Ireland to Illinois

Our best American Airlines deals on Northern Ireland to Illinois flight tickets
American Airlines
Jan 14
BHD9:15 amBelfast City
13h 45m
1 stop
ORD5:00 pmChicago O'Hare Intl
Jan 18
ORD1:35 pmChicago O'Hare Intl
14h 45m
2 stops
BHD10:20 amBelfast City
$716
Find similar
American Airlines
Jan 14
BHD6:35 amBelfast City
16h 11m
2 stops
ORD4:46 pmChicago O'Hare Intl
Jan 18
ORD1:35 pmChicago O'Hare Intl
14h 45m
2 stops
BHD10:20 amBelfast City
$722
Find similar
American Airlines
Jun 1
BHD6:40 amBelfast City
15h 25m
2 stops
ORD4:05 pmChicago O'Hare Intl
Jun 7
ORD9:15 pmChicago O'Hare Intl
14h 30m
1 stop
BHD5:45 pmBelfast City
$1,003
Find similar

British Airways flights from Northern Ireland to Illinois

Our best British Airways deals on Northern Ireland to Illinois flight tickets
British Airways
Jan 10
BHD6:35 amBelfast City
18h 40m
2 stops
ORD7:15 pmChicago O'Hare Intl
Jan 17
ORD9:45 pmChicago O'Hare Intl
10h 30m
1 stop
BHD2:15 pmBelfast City
$779
Find similar
British Airways
Jan 14
BHD12:25 pmBelfast City
12h 20m
1 stop
ORD6:45 pmChicago O'Hare Intl
Jan 18
ORD7:49 pmChicago O'Hare Intl
32h 51m
2 stops
BHD10:40 amBelfast City
$793
Find similar
British Airways
Jan 14
BHD6:35 amBelfast City
16h 25m
1 stop
ORD5:00 pmChicago O'Hare Intl
Jan 18
ORD5:10 pmChicago O'Hare Intl
11h 10m
1 stop
BHD10:20 amBelfast City
$827
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Illinois 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 December 3, 2025.
Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/15

7:05 am-4:45 pm

2 stops39h 40m

Chicago O'Hare Intl

Thu 1/22

7:20 pm-10:20 pm

2 stops21h 00m

$559

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/15

7:05 am-4:45 pm

2 stops39h 40m

Chicago O'Hare Intl

Thu 1/22

7:20 pm-10:20 pm

2 stops21h 00m

$561

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/15

6:30 am-11:22 am

3 stops34h 52m

Chicago O'Hare Intl

Thu 1/22

6:30 pm-8:25 pm

2 stops19h 55m

$569

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/15

6:30 am-11:22 am

3 stops34h 52m

Chicago O'Hare Intl

Thu 1/22

6:30 pm-8:25 pm

2 stops19h 55m

$639

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 1/14

9:15 am-5:00 pm

1 stop13h 45m

Chicago O'Hare Intl

Sun 1/18

1:35 pm-10:20 am

2 stops14h 45m

$716

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 1/14

6:35 am-4:46 pm

2 stops16h 11m

Chicago O'Hare Intl

Sun 1/18

1:35 pm-10:20 am

2 stops14h 45m

$722

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 1/10

6:35 am-7:15 pm

2 stops18h 40m

Chicago O'Hare Intl

Sat 1/17

9:45 pm-2:15 pm

1 stop10h 30m

$779

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 1/14

5:20 pm-5:26 pm

2 stops30h 06m

Chicago O'Hare Intl

Sun 1/18

1:57 pm-4:50 pm

2 stops20h 53m

$781

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 1/14

12:25 pm-6:45 pm

1 stop12h 20m

Chicago O'Hare Intl

Sun 1/18

7:49 pm-10:40 am

2 stops32h 51m

$793

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 6/1

5:30 pm-2:15 pm

1 stop26h 45m

Chicago O'Hare Intl

Sun 6/7

4:20 pm-4:55 pm

1 stop18h 35m

$948

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 Illinois from

How to get the cheapest flight ticket from Northern Ireland to Illinois

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 airline that flies from Northern Ireland to Illinois?

British Airways is the most popular carrier operating from Northern Ireland to Illinois

Cheap Northern Ireland to Illinois flight deals and tips

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

Fastest flight time

12h 20m

Direct flights

None
The fastest flight from Northern Ireland to Illinois takes 12h 20m
There are no direct flights from Northern Ireland to Illinois. There are no popular flight routes from Northern Ireland to Illinois.
Search flight deals

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

    Prices for flights from Northern Ireland to Illinois refresh daily.

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

    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 Northern Ireland to Illinois.

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

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

It is quick and easy to find Northern Ireland to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

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

momondo does allow users to show only those flights to Illinois from Northern Ireland which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Northern Ireland and Illinois 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 Northern Ireland to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Northern Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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