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 many operators does momondo search for flights from Belfast to Illinois?

There is 1 operator available for flights from Belfast to Illinois as of April 2026.

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.

£378 Cheap Flights from Belfast to Illinois in 2026

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Find the cheapest flights from Belfast to Illinois

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:40 - 18:15

BFS

ORD

17h 35m

2 stops

19:25 - 16:15

ORD

BFS

14h 50m

2 stops

£696Multiple Airlines

Mon, 11 May - Mon, 18 May

17:35 - 19:25

BFS

ORD

31h 50m

3 stops

15:45 - 23:20

ORD

BFS

25h 35m

3 stops

£775Multiple Airlines

Mon, 11 May - Mon, 18 May

17:35 - 19:25

BFS

ORD

31h 50m

3 stops

15:45 - 20:50

ORD

BFS

23h 05m

2 stops

£786Multiple Airlines

Mon, 11 May - Mon, 18 May

07:05 - 17:20

BHD

ORD

16h 15m

2 stops

17:50 - 12:55

ORD

BHD

13h 05m

1 stop

£788British Airways

Sat, 26 Sep - Mon, 28 Sep

19:10 - 12:20

BHD

ORD

23h 10m

1 stop

22:30 - 18:45

ORD

BHD

14h 15m

1 stop

£800Multiple Airlines

Sun, 19 Apr - Sun, 26 Apr

13:10 - 15:55

BHD

ORD

32h 45m

1 stop

20:35 - 14:35

ORD

BHD

12h 00m

1 stop

£806British Airways

Sun, 19 Apr - Sun, 26 Apr

13:10 - 12:20

BHD

ORD

29h 10m

1 stop

17:45 - 13:25

ORD

BHD

13h 40m

2 stops

£810British Airways

Sun, 19 Apr - Sun, 26 Apr

07:05 - 15:00

BHD

ORD

13h 55m

1 stop

21:00 - 17:30

ORD

BHD

14h 30m

1 stop

£816British Airways

Sat, 26 Sep - Mon, 28 Sep

06:30 - 13:20

BHD

ORD

36h 50m

2 stops

20:57 - 12:55

ORD

BHD

33h 58m

2 stops

£825British Airways

Sun, 19 Apr - Sun, 26 Apr

20:10 - 15:55

BHD

ORD

25h 45m

1 stop

20:37 - 08:50

ORD

BHD

30h 13m

2 stops

£827British Airways

Sun, 19 Apr - Sun, 26 Apr

British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

26 Sept

BHD07:05Belfast City

16h 15m

2 stops

ORD17:20Chicago O'Hare Intl

28 Sept

ORD18:35Chicago O'Hare Intl

18h 10m

2 stops

BHD18:45Belfast City

£788

British Airways

19 Apr

BHD13:10Belfast City

32h 45m

1 stop

ORD15:55Chicago O'Hare Intl

26 Apr

ORD20:35Chicago O'Hare Intl

12h 00m

1 stop

BHD14:35Belfast City

£806

British Airways

19 Apr

BHD13:10Belfast City

29h 10m

1 stop

ORD12:20Chicago O'Hare Intl

26 Apr

ORD17:45Chicago O'Hare Intl

13h 40m

2 stops

BHD13:25Belfast City

£810

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 11/5

06:40-18:15

2 stops17h 35m

Chicago O'Hare Intl

Mon 18/5

19:25-16:15

2 stops14h 50m

£696

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 11/5

17:35-19:25

3 stops31h 50m

Chicago O'Hare Intl

Mon 18/5

15:45-23:20

3 stops25h 35m

£775

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 11/5

17:35-19:25

3 stops31h 50m

Chicago O'Hare Intl

Mon 18/5

15:45-20:50

2 stops23h 05m

£786

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 26/9

07:05-17:20

2 stops16h 15m

Chicago O'Hare Intl

Mon 28/9

17:50-12:55

1 stop13h 05m

£788

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 19/4

19:10-12:20

1 stop23h 10m

Chicago O'Hare Intl

Sun 26/4

22:30-18:45

1 stop14h 15m

£800

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 19/4

13:10-15:55

1 stop32h 45m

Chicago O'Hare Intl

Sun 26/4

20:35-14:35

1 stop12h 00m

£806

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 19/4

13:10-12:20

1 stop29h 10m

Chicago O'Hare Intl

Sun 26/4

17:45-13:25

2 stops13h 40m

£810

Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 26/9

07:05-15:00

1 stop13h 55m

Chicago O'Hare Intl

Mon 28/9

21:00-17:30

1 stop14h 30m

£816

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 19/4

06:30-13:20

2 stops36h 50m

Chicago O'Hare Intl

Sun 26/4

20:57-12:55

2 stops33h 58m

£825

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 19/4

20:10-15:55

1 stop25h 45m

Chicago O'Hare Intl

Sun 26/4

20:37-08:50

2 stops30h 13m

£827

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

Fastest flight time	23h 10m
Direct flights	None

The fastest flight from Belfast to Illinois takes 23h 10m

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 many operators does momondo search for flights from Belfast to Illinois?
There is 1 operator available for flights from Belfast to Illinois as of April 2026.
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.

Best airlines flying from Belfast to Illinois

Compare and see reviews for airlines that fly from Belfast to Illinois with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £508	Free Cancellation	Rating 6.7 7,841 reviews		Search British Airways flights

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.