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.

£281 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.

10:50 - 16:10BFS Belfast Intl-ORD Chicago O'Hare Intl

35h 20m2 stops Edinburgh Turnhouse Kastrup Copenhagen

19:15 - 23:05ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 50m2 stops Kastrup Copenhagen Edinburgh Turnhouse

£604Multiple Airlines

Mon, 12 Oct - Mon, 19 Oct

10:10 - 16:10BFS Belfast Intl-ORD Chicago O'Hare Intl

36h 00m2 stops Paris Charles de Gaulle Kastrup Copenhagen

19:15 - 22:15ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 00m2 stops Kastrup Copenhagen Paris Charles de Gaulle

£621Multiple Airlines

Sat, 10 Oct - Sat, 17 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

£623Multiple Airlines

Wed, 14 Oct - Sun, 18 Oct

06:30 - 13:50BHD Belfast City-ORD Chicago O'Hare Intl

13h 20m1 stop London Heathrow

22:25 - 18:45ORD Chicago O'Hare Intl-BHD Belfast City

14h 20m1 stop London Heathrow

£642American Airlines

Thu, 10 Sep - Mon, 14 Sep

21:55 - 19:15BFS Belfast Intl-ORD Chicago O'Hare Intl

27h 20m3 stops Manchester Berlin Brandenburg Dublin

19:25 - 23:20ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 55m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen London Stansted

£648Multiple Airlines

Mon, 12 Oct - Mon, 19 Oct

06:10 - 19:48BFS Belfast Intl-ORD Chicago O'Hare Intl

19h 38m2 stops London Gatwick Toronto Pearson Intl

19:25 - 23:10ORD Chicago O'Hare Intl-BFS Belfast Intl

21h 45m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen London Stansted

£653Multiple Airlines

Mon, 12 Oct - Mon, 19 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

£663Multiple Airlines

Wed, 14 Oct - Sun, 18 Oct

07:40 - 15:30BHD Belfast City-ORD Chicago O'Hare Intl

13h 50m1 stop London Heathrow

18:49 - 16:05ORD Chicago O'Hare Intl-BHD Belfast City

15h 16m2 stops Charlotte Douglas London Heathrow

£677British Airways

Thu, 5 Nov - Mon, 9 Nov

07:40 - 15:30BHD Belfast City-ORD Chicago O'Hare Intl

13h 50m1 stop London Heathrow

18:49 - 16:05ORD Chicago O'Hare Intl-BHD Belfast City

15h 16m2 stops Charlotte Douglas London Heathrow

£677British Airways

Thu, 5 Nov - Mon, 9 Nov

11:40 - 18:45BHD Belfast City-ORD Chicago O'Hare Intl

13h 05m1 stop London Heathrow

18:50 - 13:15ORD Chicago O'Hare Intl-BHD Belfast City

12h 25m1 stop London Heathrow

£679American Airlines

Tue, 23 Feb - Wed, 10 Mar

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American Airlines flights from Belfast to Illinois

Our best American Airlines deals on Belfast to Illinois flight tickets

American Airlines

10 Sept

BHD06:30Belfast City

13h 20m

1 stop

ORD13:50Chicago O'Hare Intl

14 Sept

ORD22:25Chicago O'Hare Intl

14h 20m

1 stop

BHD18:45Belfast City

£642

American Airlines

23 Feb

BHD11:40Belfast City

13h 05m

1 stop

ORD18:45Chicago O'Hare Intl

10 Mar

ORD18:50Chicago O'Hare Intl

12h 25m

1 stop

BHD13:15Belfast City

£679

American Airlines

25 Feb

BHD06:30Belfast City

16h 19m

2 stops

ORD16:49Chicago O'Hare Intl

7 Mar

ORD20:40Chicago O'Hare Intl

14h 10m

1 stop

BHD16:50Belfast City

£683

British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

5 Nov

BHD07:40Belfast City

13h 50m

1 stop

ORD15:30Chicago O'Hare Intl

9 Nov

ORD18:49Chicago O'Hare Intl

15h 16m

2 stops

BHD16:05Belfast City

£677

British Airways

5 Nov

BHD07:40Belfast City

13h 50m

1 stop

ORD15:30Chicago O'Hare Intl

9 Nov

ORD18:49Chicago O'Hare Intl

15h 16m

2 stops

BHD16:05Belfast City

£677

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

£681

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 12/10

10:50-16:10

2 stops35h 20m

Chicago O'Hare Intl

Mon 19/10

19:15-23:05

2 stops21h 50m

£604

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sat 10/10

10:10-16:10

2 stops36h 00m

Chicago O'Hare Intl

Sat 17/10

19:15-22:15

2 stops21h 00m

£621

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

£623

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Thu 10/9

06:30-13:50

1 stop13h 20m

Chicago O'Hare Intl

Mon 14/9

22:25-18:45

1 stop14h 20m

£642

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 12/10

21:55-19:15

3 stops27h 20m

Chicago O'Hare Intl

Mon 19/10

19:25-23:20

3 stops21h 55m

£648

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 12/10

06:10-19:48

2 stops19h 38m

Chicago O'Hare Intl

Mon 19/10

19:25-23:10

3 stops21h 45m

£653

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

£663

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Thu 5/11

07:40-15:30

1 stop13h 50m

Chicago O'Hare Intl

Mon 9/11

18:49-16:05

2 stops15h 16m

£677

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Thu 5/11

07:40-15:30

1 stop13h 50m

Chicago O'Hare Intl

Mon 9/11

18:49-16:05

2 stops15h 16m

£677

Fastest return journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Tue 23/2

11:40-18:45

1 stop13h 05m

Chicago O'Hare Intl

Wed 10/3

18:50-13:15

1 stop12h 25m

£679

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Belfast 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 Belfast to Illinois?

British Airways is the most popular carrier operating from Belfast to Illinois

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	£281
Fastest flight time	13h 20m
Direct flights	None

The best one-way flight to Illinois from Belfast in the past 72 hours is £281. The best return flight deal from Belfast to Illinois found on momondo in the last 72 hours is £604.

The fastest flight from Belfast to Illinois takes 13h 20m

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.

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.