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

Confirm your travel details to search for the latest offers for flights from Belfast to Illinois . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

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

By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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

Prices for flights from Belfast to Illinois were last updated today.

How old do you have to be to fly from Belfast to Illinois?

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 Belfast to Illinois.

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

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£310 Cheap Flights from Belfast to Illinois in 2026

Find the cheapest flights from Belfast to Illinois

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:05 - 22:06BFS Belfast Intl-ORD Chicago O'Hare Intl

22h 01m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

19:30 - 22:00ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 30m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Edinburgh Turnhouse

£640Multiple Airlines

Fri, 23 Oct - Fri, 30 Oct

06:05 - 22:06BFS Belfast Intl-ORD Chicago O'Hare Intl

22h 01m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

19:30 - 22:00ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 30m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen London Stansted

£658Multiple Airlines

Fri, 23 Oct - Fri, 30 Oct

06:05 - 22:06BFS Belfast Intl-ORD Chicago O'Hare Intl

22h 01m2 stops London Gatwick Toronto Pearson Intl

19:30 - 22:00ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 30m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Edinburgh Turnhouse

£661Multiple Airlines

Fri, 23 Oct - Fri, 30 Oct

06:05 - 22:06BFS Belfast Intl-ORD Chicago O'Hare Intl

22h 01m2 stops London Gatwick Toronto Pearson Intl

19:30 - 22:00ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 30m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Edinburgh Turnhouse

£661Multiple Airlines

Fri, 23 Oct - Fri, 30 Oct

09:15 - 19:30BHD Belfast City-ORD Chicago O'Hare Intl

16h 15m1 stop London Heathrow

17:10 - 13:50ORD Chicago O'Hare Intl-BHD Belfast City

14h 40m1 stop London Heathrow

£675British Airways

Wed, 4 Nov - Sun, 8 Nov

09:15 - 19:30BHD Belfast City-ORD Chicago O'Hare Intl

16h 15m1 stop London Heathrow

17:10 - 13:50ORD Chicago O'Hare Intl-BHD Belfast City

14h 40m1 stop London Heathrow

£675British Airways

Wed, 4 Nov - Sun, 8 Nov

09:15 - 19:30BHD Belfast City-ORD Chicago O'Hare Intl

16h 15m1 stop London Heathrow

17:10 - 13:50ORD Chicago O'Hare Intl-BHD Belfast City

14h 40m1 stop London Heathrow

£676British Airways

Wed, 4 Nov - Sun, 8 Nov

09:15 - 18:20BHD Belfast City-ORD Chicago O'Hare Intl

15h 05m2 stops London Heathrow Dublin

16:50 - 13:50ORD Chicago O'Hare Intl-BHD Belfast City

15h 00m2 stops Cincinnati Cinci./N. Kentucky London Heathrow

£678British Airways

Wed, 4 Nov - Sun, 8 Nov

09:15 - 18:20BHD Belfast City-ORD Chicago O'Hare Intl

15h 05m2 stops London Heathrow Dublin

16:50 - 13:50ORD Chicago O'Hare Intl-BHD Belfast City

15h 00m2 stops Cincinnati Cinci./N. Kentucky London Heathrow

£678British Airways

Wed, 4 Nov - Sun, 8 Nov

09:15 - 18:20BHD Belfast City-ORD Chicago O'Hare Intl

15h 05m2 stops London Heathrow Dublin

16:50 - 13:50ORD Chicago O'Hare Intl-BHD Belfast City

15h 00m2 stops Cincinnati Cinci./N. Kentucky London Heathrow

£679British Airways

Wed, 4 Nov - Sun, 8 Nov

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British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

4 Nov

BHD09:15Belfast City

16h 15m

1 stop

ORD19:30Chicago O'Hare Intl

8 Nov

ORD17:10Chicago O'Hare Intl

14h 40m

1 stop

BHD13:50Belfast City

£675

British Airways

4 Nov

BHD09:15Belfast City

16h 15m

1 stop

ORD19:30Chicago O'Hare Intl

8 Nov

ORD17:10Chicago O'Hare Intl

14h 40m

1 stop

BHD13:50Belfast City

£675

British Airways

4 Nov

BHD11:40Belfast City

13h 50m

1 stop

ORD19:30Chicago O'Hare Intl

8 Nov

ORD16:50Chicago O'Hare Intl

15h 00m

2 stops

BHD13:50Belfast City

£676

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 23/10

06:05-22:06

3 stops22h 01m

Chicago O'Hare Intl

Fri 30/10

19:30-22:00

3 stops21h 30m

£640

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 23/10

06:05-22:06

3 stops22h 01m

Chicago O'Hare Intl

Fri 30/10

19:30-22:00

3 stops21h 30m

£658

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 23/10

06:05-22:06

2 stops22h 01m

Chicago O'Hare Intl

Fri 30/10

19:30-22:00

3 stops21h 30m

£661

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 23/10

06:05-22:06

2 stops22h 01m

Chicago O'Hare Intl

Fri 30/10

19:30-22:00

3 stops21h 30m

£661

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-19:30

1 stop16h 15m

Chicago O'Hare Intl

Sun 8/11

17:10-13:50

1 stop14h 40m

£675

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-19:30

1 stop16h 15m

Chicago O'Hare Intl

Sun 8/11

17:10-13:50

1 stop14h 40m

£675

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-19:30

1 stop16h 15m

Chicago O'Hare Intl

Sun 8/11

17:10-13:50

1 stop14h 40m

£676

Fastest return journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-18:20

2 stops15h 05m

Chicago O'Hare Intl

Sun 8/11

16:50-13:50

2 stops15h 00m

£678

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-18:20

2 stops15h 05m

Chicago O'Hare Intl

Sun 8/11

16:50-13:50

2 stops15h 00m

£678

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-18:20

2 stops15h 05m

Chicago O'Hare Intl

Sun 8/11

16:50-13:50

2 stops15h 00m

£679

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Cheap Belfast to Illinois flight deals and tips

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

Best price found	£310
Fastest flight time	16h 15m
Direct flights	None

The best one-way flight to Illinois from Belfast in the past 72 hours is £310. The best return flight deal from Belfast to Illinois found on momondo in the last 72 hours is £640.

The fastest flight from Belfast to Illinois takes 16h 15m

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

Search flight deals

Frequently asked questions about flying from Belfast to Illinois

When did momondo last update prices for flights from Belfast to Illinois?
Prices for flights from Belfast to Illinois were last updated today.
How old do you have to be to fly from Belfast to Illinois?
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 Belfast to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Belfast to Illinois

How do I get Price Alerts for flights from Belfast to Illinois?
Confirm your travel details to search for the latest offers for flights from Belfast to Illinois. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Belfast to Illinois with momondo?
By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Belfast 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 Belfast.

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

Flights from Belfast to Illinois 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 Belfast to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Belfast. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Belfast 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 Belfast and alert you when they change.