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.

£274 Cheap Flights from Belfast to Illinois in 2026

Find the cheapest flights from Belfast to Illinois

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:10 - 20:41BFS Belfast Intl-ORD Chicago O'Hare Intl

44h 31m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island

19:25 - 20:55ORD Chicago O'Hare Intl-BFS Belfast Intl

19h 30m2 stops Reykjavik Keflavik Intl Manchester

£568Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

06:40 - 18:15BFS Belfast Intl-ORD Chicago O'Hare Intl

41h 35m3 stops London Stansted Milan Malpensa Reykjavik Keflavik Intl

19:25 - 19:40ORD Chicago O'Hare Intl-BFS Belfast Intl

18h 15m2 stops Reykjavik Keflavik Intl Glasgow Intl

£594Multiple Airlines

Tue, 29 Sep - Tue, 6 Oct

20:55 - 20:41BFS Belfast Intl-ORD Chicago O'Hare Intl

29h 46m3 stops London Gatwick Ottawa Toronto Island

14:15 - 20:40ORD Chicago O'Hare Intl-BFS Belfast Intl

24h 25m2 stops Toronto Pearson Intl Edinburgh Turnhouse

£623Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

08:00 - 19:15BFS Belfast Intl-ORD Chicago O'Hare Intl

17h 15m2 stops Edinburgh Turnhouse Dublin

15:45 - 23:05ORD Chicago O'Hare Intl-BFS Belfast Intl

25h 20m2 stops Dublin Edinburgh Turnhouse

£626Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

06:10 - 20:41BFS Belfast Intl-ORD Chicago O'Hare Intl

44h 31m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island

11:05 - 23:20ORD Chicago O'Hare Intl-BFS Belfast Intl

30h 15m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat London Stansted

£629Multiple Airlines

Mon, 28 Sep - Mon, 5 Oct

20:55 - 20:41BFS Belfast Intl-ORD Chicago O'Hare Intl

29h 46m3 stops London Gatwick Ottawa Toronto Island

11:05 - 20:40ORD Chicago O'Hare Intl-BFS Belfast Intl

27h 35m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Edinburgh Turnhouse

£634Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

21:10 - 19:48BFS Belfast Intl-ORD Chicago O'Hare Intl

28h 38m2 stops London Gatwick Toronto Pearson Intl

22:25 - 21:50ORD Chicago O'Hare Intl-BFS Belfast Intl

17h 25m2 stops Reykjavik Keflavik Intl Glasgow Intl

£637Multiple Airlines

Fri, 25 Sep - Fri, 2 Oct

21:10 - 19:48BFS Belfast Intl-ORD Chicago O'Hare Intl

28h 38m2 stops London Gatwick Toronto Pearson Intl

22:25 - 21:00ORD Chicago O'Hare Intl-BFS Belfast Intl

16h 35m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Manchester

£648Multiple Airlines

Fri, 25 Sep - Fri, 2 Oct

07:00 - 19:15BFS Belfast Intl-ORD Chicago O'Hare Intl

18h 15m2 stops Birmingham Dublin

21:00 - 23:00ORD Chicago O'Hare Intl-BFS Belfast Intl

20h 00m2 stops Dublin Birmingham

£651Multiple Airlines

Tue, 29 Sep - Tue, 6 Oct

06:05 - 13:21BFS Belfast Intl-ORD Chicago O'Hare Intl

37h 16m3 stops London Gatwick Ottawa Toronto Island

22:25 - 21:00ORD Chicago O'Hare Intl-BFS Belfast Intl

16h 35m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Manchester

£663Multiple Airlines

Fri, 25 Sep - Fri, 2 Oct

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

2 Dec

BHD06:35Belfast City

18h 10m

1 stop

ORD18:45Chicago O'Hare Intl

6 Dec

ORD17:10Chicago O'Hare Intl

11h 35m

1 stop

BHD10:45Belfast City

£755

British Airways

2 Dec

BHD06:35Belfast City

18h 10m

1 stop

ORD18:45Chicago O'Hare Intl

6 Dec

ORD17:10Chicago O'Hare Intl

11h 35m

1 stop

BHD10:45Belfast City

£756

British Airways

2 Dec

BHD09:15Belfast City

12h 15m

1 stop

ORD15:30Chicago O'Hare Intl

6 Dec

ORD14:31Chicago O'Hare Intl

17h 19m

2 stops

BHD13:50Belfast City

£756

Virgin Atlantic flights from Belfast to Illinois

Our best Virgin Atlantic deals on Belfast to Illinois flight tickets

Virgin Atlantic

2 Sept

BHD17:30Belfast City

26h 45m

1 stop

ORD14:15Chicago O'Hare Intl

30 Sept

ORD16:50Chicago O'Hare Intl

18h 05m

1 stop

BHD16:55Belfast City

£4,983

Virgin Atlantic

2 Sept

BHD17:30Belfast City

27h 29m

2 stops

ORD14:59Chicago O'Hare Intl

30 Sept

ORD16:50Chicago O'Hare Intl

10h 30m

1 stop

BHD09:20Belfast City

£4,984

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 28/9

06:10-20:41

3 stops44h 31m

Chicago O'Hare Intl

Mon 5/10

19:25-20:55

2 stops19h 30m

£568

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Tue 29/9

06:40-18:15

3 stops41h 35m

Chicago O'Hare Intl

Tue 6/10

19:25-19:40

2 stops18h 15m

£594

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 7/9

20:55-20:41

3 stops29h 46m

Chicago O'Hare Intl

Mon 14/9

14:15-20:40

2 stops24h 25m

£623

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 28/9

08:00-19:15

2 stops17h 15m

Chicago O'Hare Intl

Mon 5/10

15:45-23:05

2 stops25h 20m

£626

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 28/9

06:10-20:41

3 stops44h 31m

Chicago O'Hare Intl

Mon 5/10

11:05-23:20

3 stops30h 15m

£628

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 7/9

20:55-20:41

3 stops29h 46m

Chicago O'Hare Intl

Mon 14/9

11:05-20:40

3 stops27h 35m

£634

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 25/9

21:10-19:48

2 stops28h 38m

Chicago O'Hare Intl

Fri 2/10

22:25-21:50

2 stops17h 25m

£637

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 25/9

21:10-19:48

2 stops28h 38m

Chicago O'Hare Intl

Fri 2/10

22:25-21:00

3 stops16h 35m

£648

Fastest return journey

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Tue 29/9

07:00-19:15

2 stops18h 15m

Chicago O'Hare Intl

Tue 6/10

21:00-23:00

2 stops20h 00m

£651

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 25/9

06:05-13:21

3 stops37h 16m

Chicago O'Hare Intl

Fri 2/10

22:25-21:00

3 stops16h 35m

£663

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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

Fastest flight time	12h 15m
Direct flights	None

The fastest flight from Belfast to Illinois takes 12h 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.

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.