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Cheap flights from Illinois to Northern Ireland from $380

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Northern Ireland departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Northern Ireland

Cheap round-trip flights

Logo
7:30 pm - 8:10 pmORD-BFS
19h 40m2 stops
Logo
8:10 am - 6:20 pmBFS-ORD
15h 10m2 stops
$614
Find Deal
Sun, Oct 26 - Sat, Nov 1
British Airways Logo
8:35 pm - 3:40 pmORD-BHD
13h 05m1 stop
British Airways Logo
7:30 pm - 3:45 pmBHD-ORD
26h 15m2 stops
$622British Airways
Find Deal
Mon, Aug 25 - Mon, Sep 1
American Airlines Logo
9:15 pm - 3:40 pmORD-BHD
12h 25m1 stop
American Airlines Logo
1:40 pm - 11:50 amBHD-ORD
28h 10m1 stop
$629American Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 23
Delta Logo
4:40 pm - 4:55 pmORD-BHD
18h 15m1 stop
Delta Logo
5:25 pm - 2:10 pmBHD-ORD
26h 45m1 stop
$704Delta
Find Deal
Mon, Sep 22 - Mon, Sep 29
Delta Logo
6:50 pm - 4:55 pmORD-BHD
16h 05m2 stops
Delta Logo
5:25 pm - 2:10 pmBHD-ORD
26h 45m1 stop
$708Delta
Find Deal
Mon, Sep 22 - Mon, Sep 29
American Airlines Logo
10:35 pm - 7:35 pmORD-BHD
15h 00m1 stop
American Airlines Logo
9:35 am - 8:43 pmBHD-ORD
17h 08m2 stops
$728American Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 23
Virgin Atlantic Logo
3:55 pm - 4:55 pmORD-BHD
19h 00m2 stops
Virgin Atlantic Logo
6:30 am - 2:10 pmBHD-ORD
13h 40m1 stop
$766Virgin Atlantic
Find Deal
Fri, Oct 3 - Tue, Oct 7
Virgin Atlantic Logo
9:35 am - 9:15 pmMDW-BHD
29h 40m2 stops
Virgin Atlantic Logo
5:25 pm - 6:25 pmBHD-MDW
31h 00m2 stops
$776Virgin Atlantic
Find Deal
Fri, Oct 3 - Tue, Oct 7
KLM Logo
4:15 pm - 9:15 pmORD-BHD
23h 00m1 stop
KLM Logo
5:25 pm - 2:40 pmBHD-ORD
27h 15m1 stop
$804KLM
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Fri, Sep 19 - Sun, Sep 28
KLM Logo
4:15 pm - 9:15 pmORD-BHD
23h 00m1 stop
KLM Logo
6:30 am - 7:05 pmBHD-ORD
18h 35m2 stops
$814KLM
Find Deal
Fri, Sep 19 - Sat, Sep 27

Delta flights from Illinois to Northern Ireland

Our best Delta deals on Illinois to Northern Ireland flight tickets
Delta
Sep 22
ORD4:40 pmChicago O'Hare Intl
18h 15m
1 stop
BHD4:55 pmBelfast City
Sep 29
BHD5:25 pmBelfast City
26h 45m
1 stop
ORD2:10 pmChicago O'Hare Intl
$704
Find similar
Delta
Sep 22
ORD6:50 pmChicago O'Hare Intl
16h 05m
2 stops
BHD4:55 pmBelfast City
Sep 29
BHD5:25 pmBelfast City
26h 45m
1 stop
ORD2:10 pmChicago O'Hare Intl
$708
Find similar
Delta
Sep 21
ORD6:50 pmChicago O'Hare Intl
20h 25m
2 stops
BHD9:15 pmBelfast City
Sep 29
BHD5:25 pmBelfast City
31h 52m
2 stops
ORD7:17 pmChicago O'Hare Intl
$718
Find similar

British Airways flights from Illinois to Northern Ireland

Our best British Airways deals on Illinois to Northern Ireland flight tickets
British Airways
Aug 25
ORD8:35 pmChicago O'Hare Intl
13h 05m
1 stop
BHD3:40 pmBelfast City
Sep 1
BHD7:30 pmBelfast City
26h 15m
2 stops
ORD3:45 pmChicago O'Hare Intl
$622
Find similar
British Airways
Aug 25
ORD8:35 pmChicago O'Hare Intl
14h 55m
1 stop
BHD5:30 pmBelfast City
Sep 1
BHD7:30 pmBelfast City
22h 25m
1 stop
ORD11:55 amChicago O'Hare Intl
$632
Find similar
British Airways
Sep 21
ORD10:35 pmChicago O'Hare Intl
13h 05m
1 stop
BHD5:40 pmBelfast City
Sep 29
BHD6:30 pmBelfast City
23h 20m
1 stop
ORD11:50 amChicago O'Hare Intl
$643
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Northern 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 August 7, 2025.
Use the filters below to find and compare flights from Illinois to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 10/26

7:30 pm-8:10 pm

2 stops19h 40m

Belfast Intl

Sat 11/1

8:10 am-6:20 pm

2 stops15h 10m

$614

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 8/25

8:35 pm-3:40 pm

1 stop13h 05m

Belfast City

Mon 9/1

7:30 pm-3:45 pm

2 stops26h 15m

$622

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 9/8

9:15 pm-3:40 pm

1 stop12h 25m

Belfast City

Tue 9/23

1:40 pm-11:50 am

1 stop28h 10m

$629

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 9/22

4:40 pm-4:55 pm

1 stop18h 15m

Belfast City

Mon 9/29

5:25 pm-2:10 pm

1 stop26h 45m

$704

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 9/22

6:50 pm-4:55 pm

2 stops16h 05m

Belfast City

Mon 9/29

5:25 pm-2:10 pm

1 stop26h 45m

$708

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 9/8

10:35 pm-7:35 pm

1 stop15h 00m

Belfast City

Tue 9/23

9:35 am-8:43 pm

2 stops17h 08m

$728

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 10/3

3:55 pm-4:55 pm

2 stops19h 00m

Belfast City

Tue 10/7

6:30 am-2:10 pm

1 stop13h 40m

$766

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 10/3

9:35 am-9:15 pm

2 stops29h 40m

Belfast City

Tue 10/7

5:25 pm-6:25 pm

2 stops31h 00m

$776

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 9/19

4:15 pm-9:15 pm

1 stop23h 00m

Belfast City

Sun 9/28

5:25 pm-2:40 pm

1 stop27h 15m

$804

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 9/19

4:15 pm-9:15 pm

1 stop23h 00m

Belfast City

Sat 9/27

6:30 am-7:05 pm

2 stops18h 35m

$814

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 Northern Ireland from

How to get the cheapest flight ticket from Illinois 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

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

The cheapest day to depart on your flight to Northern Ireland is on a Sunday when prices can be found for as low as $718. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Northern Ireland for around $853.

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

In the evening is the cheapest time of day to fly from Illinois to Northern Ireland when you can find flight prices for as low as $751. Flying to Northern Ireland in the evening is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $782.

Cheap Illinois to Northern Ireland flight deals and tips

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

Best Price Found

$380

Fastest flight time

10h 50m

Direct flights

None

Airports in Northern Ireland

2 airports
The best one-way flight to Northern Ireland from Illinois in the past 72 hours is $380. The best round-trip flight deal from Illinois to Northern Ireland found on momondo in the last 72 hours is $614.
The fastest flight from Illinois to Northern Ireland takes 10h 50m
There are no direct flights from Illinois to Northern Ireland. Popular non-direct routes for this connection are Chicago Midway Airport - Belfast City Airport, Chicago O'Hare Intl Airport - Belfast Intl Airport and Chicago O'Hare Intl Airport - Belfast City Airport.
There are 2 airports near Northern Ireland: Belfast Intl (BFS), Belfast City (BHD)
Search flight deals

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

    Prices for flights from Illinois to Northern Ireland were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Northern Ireland.

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

    The travel and health documents you'll need for your trip to Northern 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 Northern Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Northern Ireland

Compare and see reviews for airlines that fly from Illinois to Northern Ireland with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.6
7,245 reviews
Search British Airways flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Northern Ireland from Illinois.

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

Yes. momondo allows you to filter the results for Illinois to Northern Ireland flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Northern Ireland from Illinois.

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

Price alerts on flights to Northern Ireland from Illinois 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.

An easier way to manage your Northern Ireland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Northern Ireland

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