How do I get Price Alerts for flights from Northern Ireland to Illinois?

You can take advantage of momondo’s Price Alerts by first searching for your flights to Northern Ireland from Illinois . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How can I save money on flights from Northern Ireland to Illinois with momondo?

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

Prices for flights from Northern Ireland to Illinois are refreshed on a daily basis.

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

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 Northern Ireland to Illinois.

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

The travel and health documents required for your trip to Illinois 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 Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£276 Cheap Flights from Northern Ireland to Illinois in 2026

Find the cheapest flights from Northern Ireland to Illinois

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:10 - 21:25BFS Belfast Intl-ORD Chicago O'Hare Intl

21h 15m2 stops London Gatwick Reykjavik Keflavik Intl

19:25 - 20:30ORD Chicago O'Hare Intl-BFS Belfast Intl

19h 05m2 stops Reykjavik Keflavik Intl London Gatwick

£616Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

06:15 - 21:25BFS Belfast Intl-ORD Chicago O'Hare Intl

21h 10m2 stops Paris Charles de Gaulle Reykjavik Keflavik Intl

19:25 - 20:15ORD Chicago O'Hare Intl-BFS Belfast Intl

18h 50m2 stops Reykjavik Keflavik Intl London Gatwick

£618Multiple Airlines

Wed, 14 Oct - Sun, 18 Oct

08:15 - 20:41BFS Belfast Intl-ORD Chicago O'Hare Intl

18h 26m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island

19:25 - 22:20ORD Chicago O'Hare Intl-BFS Belfast Intl

20h 55m2 stops Reykjavik Keflavik Intl Manchester

£632Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

06:15 - 19:15BFS Belfast Intl-ORD Chicago O'Hare Intl

19h 00m2 stops Paris Charles de Gaulle Dublin

19:25 - 22:30ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 05m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Bristol

£658Multiple Airlines

Wed, 14 Oct - Sun, 18 Oct

21:25 - 14:00BFS Belfast Intl-ORD Chicago O'Hare Intl

22h 35m2 stops Manchester Dublin

16:45 - 11:00ORD Chicago O'Hare Intl-BFS Belfast Intl

12h 15m2 stops Dublin Manchester

£659Multiple Airlines

Tue, 20 Oct - Sat, 24 Oct

06:15 - 15:10BFS Belfast Intl-ORD Chicago O'Hare Intl

14h 55m1 stop Paris Charles de Gaulle

16:50 - 13:45ORD Chicago O'Hare Intl-BFS Belfast Intl

14h 55m2 stops Amsterdam Schiphol Paris Charles de Gaulle

£664Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

08:15 - 20:41BFS Belfast Intl-ORD Chicago O'Hare Intl

18h 26m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island

14:15 - 15:20ORD Chicago O'Hare Intl-BFS Belfast Intl

19h 05m3 stops Toronto Pearson Intl Madrid Barajas Manchester

£668Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

06:15 - 15:10BFS Belfast Intl-ORD Chicago O'Hare Intl

14h 55m1 stop Paris Charles de Gaulle

17:10 - 13:45ORD Chicago O'Hare Intl-BFS Belfast Intl

14h 35m1 stop Paris Charles de Gaulle

£674Multiple Airlines

Wed, 7 Oct - Wed, 14 Oct

21:35 - 14:55BFS Belfast Intl-ORD Chicago O'Hare Intl

23h 20m2 stops Glasgow Intl Toronto Pearson Intl

14:15 - 16:15ORD Chicago O'Hare Intl-BFS Belfast Intl

20h 00m3 stops Toronto Pearson Intl Madrid Barajas London Stansted

£680Multiple Airlines

Mon, 5 Oct - Mon, 12 Oct

06:40 - 09:40BFS Belfast Intl-ORD Chicago O'Hare Intl

33h 00m2 stops London Stansted Istanbul

11:25 - 23:20ORD Chicago O'Hare Intl-BFS Belfast Intl

29h 55m2 stops Istanbul London Stansted

£707Multiple Airlines

Mon, 5 Oct - Mon, 12 Oct

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British Airways flights from Northern Ireland to Illinois

Our best British Airways deals on Northern Ireland to Illinois flight tickets

British Airways

5 Nov

BHD06:30Belfast City

15h 00m

1 stop

ORD15:30Chicago O'Hare Intl

9 Nov

ORD17:10Chicago O'Hare Intl

15h 05m

1 stop

BHD14:15Belfast City

£756

British Airways

5 Nov

BHD07:40Belfast City

12h 05m

1 stop

ORD13:45Chicago O'Hare Intl

9 Nov

ORD18:35Chicago O'Hare Intl

15h 30m

1 stop

BHD16:05Belfast City

£757

British Airways

5 Nov

BHD11:05Belfast City

17h 27m

2 stops

ORD22:32Chicago O'Hare Intl

9 Nov

ORD16:45Chicago O'Hare Intl

15h 30m

2 stops

BHD14:15Belfast City

£760

momondo Fare Finder

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

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 7/10

06:10-21:25

2 stops21h 15m

Chicago O'Hare Intl

Wed 14/10

19:25-20:30

2 stops19h 05m

£616

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 14/10

06:15-21:25

2 stops21h 10m

Chicago O'Hare Intl

Sun 18/10

19:25-20:15

2 stops18h 50m

£618

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 7/10

08:15-20:41

3 stops18h 26m

Chicago O'Hare Intl

Wed 14/10

19:25-22:20

2 stops20h 55m

£632

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 14/10

06:15-19:15

2 stops19h 00m

Chicago O'Hare Intl

Sun 18/10

19:25-22:30

3 stops21h 05m

£658

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Tue 20/10

21:25-14:00

2 stops22h 35m

Chicago O'Hare Intl

Sat 24/10

16:45-11:00

2 stops12h 15m

£659

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 7/10

06:15-15:10

1 stop14h 55m

Chicago O'Hare Intl

Wed 14/10

16:50-13:45

2 stops14h 55m

£664

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 7/10

08:15-20:41

3 stops18h 26m

Chicago O'Hare Intl

Wed 14/10

14:15-15:20

3 stops19h 05m

£668

Fastest return journey

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 7/10

06:15-15:10

1 stop14h 55m

Chicago O'Hare Intl

Wed 14/10

17:10-13:45

1 stop14h 35m

£674

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 5/10

21:35-14:55

2 stops23h 20m

Chicago O'Hare Intl

Mon 12/10

14:15-16:15

3 stops20h 00m

£680

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 5/10

06:40-09:40

2 stops33h 00m

Chicago O'Hare Intl

Mon 12/10

11:25-23:20

2 stops29h 55m

£707

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

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

Best price found	£276
Fastest flight time	15h 00m
Direct flights	None

The best one-way flight to Illinois from Northern Ireland in the past 72 hours is £276. The best return flight deal from Northern Ireland to Illinois found on momondo in the last 72 hours is £616.

The fastest flight from Northern Ireland to Illinois takes 15h 00m

There are no direct flights from Northern Ireland to Illinois. There are no popular flight routes from Northern Ireland to Illinois.

Search flight deals

Frequently asked questions about flying from Northern Ireland to Illinois

When did momondo last update prices for flights from Northern Ireland to Illinois?
Prices for flights from Northern Ireland to Illinois are refreshed on a daily basis.
How old do you have to be to fly from Northern Ireland to Illinois?
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 Northern Ireland to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois 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 Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Northern Ireland to Illinois

How do I get Price Alerts for flights from Northern Ireland to Illinois?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Northern Ireland from Illinois. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Northern Ireland to Illinois with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

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 Illinois from Northern Ireland.

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

All flight searches from Northern Ireland to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Northern Ireland to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Northern Ireland and alert you when they change.