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Cheap flights from Northern Ireland to Chicago from £307

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 Chicago departing on 28/10. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Northern Ireland to Chicago

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:55 - 20:41BFS  Belfast Intl-ORD Chicago O'Hare Intl
29h 46m3 stops London Gatwick Ottawa Toronto Island
Multiple Airlines Logo
19:25 - 22:20ORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 55m2 stops Reykjavik Keflavik Intl Manchester
£565Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:10 - 14:55BFS  Belfast Intl-ORD Chicago O'Hare Intl
38h 45m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Multiple Airlines Logo
19:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£580Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
21:35 - 19:48BFS  Belfast Intl-ORD Chicago O'Hare Intl
28h 13m2 stops Glasgow Intl Toronto Pearson Intl
Multiple Airlines Logo
22:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£585Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
21:35 - 20:12BFS  Belfast Intl-ORD Chicago O'Hare Intl
28h 37m3 stops Glasgow Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
22:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£591Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:10 - 22:05BFS  Belfast Intl-ORD Chicago O'Hare Intl
21h 55m2 stops London Gatwick Toronto Pearson Intl
Multiple Airlines Logo
19:25 - 22:20ORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 55m2 stops Reykjavik Keflavik Intl Manchester
£600Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
22:20 - 16:10BFS  Belfast Intl-ORD Chicago O'Hare Intl
23h 50m2 stops Manchester Kastrup Copenhagen
Multiple Airlines Logo
19:15 - 22:20ORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 05m2 stops Kastrup Copenhagen Manchester
£613Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:00 - 19:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
19h 15m2 stops London Stansted Dublin
Multiple Airlines Logo
15:45 - 23:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
25h 25m2 stops Dublin London Heathrow
£619Multiple Airlines
Wed, 26 Aug - Wed, 14 Oct
Multiple Airlines Logo
08:40 - 10:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
31h 35m3 stops Manchester Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
22:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£626Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
21:35 - 19:48BFS  Belfast Intl-ORD Chicago O'Hare Intl
28h 13m2 stops Glasgow Intl Toronto Pearson Intl
Multiple Airlines Logo
19:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£635Multiple Airlines
Mon, 21 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:00 - 12:40BFS  Belfast Intl-ORD Chicago O'Hare Intl
36h 40m3 stops London Stansted Madrid Barajas Lisbon Humberto Delgado
Multiple Airlines Logo
22:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£643Multiple Airlines
Wed, 26 Aug - Wed, 14 Oct

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British Airways flights from Northern Ireland to Chicago

Our best British Airways deals on Northern Ireland to Chicago flight tickets
British Airways
5 Nov
BHD07:40Belfast City
12h 05m
1 stop
ORD13:45Chicago O'Hare Intl
9 Nov
ORD18:50Chicago O'Hare Intl
15h 15m
1 stop
BHD16:05Belfast City
£756
British Airways
5 Nov
BHD07:40Belfast City
12h 05m
1 stop
ORD13:45Chicago O'Hare Intl
9 Nov
ORD13:22Chicago O'Hare Intl
15h 18m
2 stops
BHD10:40Belfast City
£756
British Airways
2 Dec
BHD09:15Belfast City
15h 30m
1 stop
ORD18:45Chicago O'Hare Intl
6 Dec
ORD17:10Chicago O'Hare Intl
11h 10m
1 stop
BHD10:20Belfast City
£757

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Chicago 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 279,928 searches. Data last updated 7 August 2026.
Use the filters below to find and compare flights from Northern Ireland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

20:55-20:41

3 stops29h 46m

Chicago O'Hare Intl

Wed 30/9

19:25-22:20

2 stops20h 55m

£565

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

06:10-14:55

3 stops38h 45m

Chicago O'Hare Intl

Wed 30/9

19:25-21:10

2 stops19h 45m

£580

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

21:35-19:48

2 stops28h 13m

Chicago O'Hare Intl

Wed 30/9

22:25-21:10

2 stops16h 45m

£585

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

21:35-20:12

3 stops28h 37m

Chicago O'Hare Intl

Wed 30/9

22:25-21:10

2 stops16h 45m

£591
Fastest return journey

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

06:10-22:05

2 stops21h 55m

Chicago O'Hare Intl

Wed 30/9

19:25-22:20

2 stops20h 55m

£600

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

22:20-16:10

2 stops23h 50m

Chicago O'Hare Intl

Wed 30/9

19:15-22:20

2 stops21h 05m

£613

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 26/8

06:00-19:15

2 stops19h 15m

Chicago O'Hare Intl

Wed 14/10

15:45-23:10

2 stops25h 25m

£619

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

08:40-10:15

3 stops31h 35m

Chicago O'Hare Intl

Wed 30/9

22:25-21:10

2 stops16h 45m

£626

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

21:35-19:48

2 stops28h 13m

Chicago O'Hare Intl

Wed 30/9

19:25-21:10

2 stops19h 45m

£635

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 26/8

06:00-12:40

3 stops36h 40m

Chicago O'Hare Intl

Wed 14/10

22:25-21:10

2 stops16h 45m

£643

Flights are sorted by cheapest return flights first.

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

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

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 Chicago?

American Airlines and British Airways are the most popular carriers operating from Northern Ireland to Chicago

Cheap Northern Ireland to Chicago flight deals and tips

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

Fastest flight time

12h 05m

Direct flights

None
The fastest flight from Northern Ireland to Chicago takes 12h 05m
There are no direct flights from Northern Ireland to Chicago. There are no popular flight routes from Northern Ireland to Chicago.
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Frequently asked questions about flying from Northern Ireland to Chicago

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

    Prices for flights from Northern Ireland to Chicago are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Northern Ireland to Chicago.

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

    The required travel and health documents for your Chicago 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 Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Schererville

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Northern Ireland to Chicago . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Northern Ireland to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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 Chicago from Northern Ireland.

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

Yes momondo offers price alerts on flights to Chicago from Northern Ireland. 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.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport