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 May 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.

£323 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.

18:00 - 18:15

BFS

ORD

30h 15m

2 stops

22:25 - 19:55

ORD

BFS

15h 30m

2 stops

£605Multiple Airlines

Sun, 21 Jun - Sun, 28 Jun

08:30 - 19:15

BFS

ORD

40h 45m

3 stops

19:25 - 19:30

ORD

BFS

18h 05m

2 stops

£692Multiple Airlines

Wed, 19 Aug - Thu, 17 Sep

08:30 - 19:15

BFS

ORD

40h 45m

3 stops

19:25 - 17:05

ORD

BFS

15h 40m

2 stops

£697Multiple Airlines

Wed, 19 Aug - Wed, 16 Sep

08:30 - 19:15

BFS

ORD

40h 45m

3 stops

22:25 - 23:10

ORD

BFS

18h 45m

3 stops

£722Multiple Airlines

Wed, 19 Aug - Wed, 16 Sep

06:10 - 09:00

BFS

ORD

32h 50m

3 stops

09:55 - 15:55

ORD

BFS

24h 00m

2 stops

£731Multiple Airlines

Thu, 11 Jun - Wed, 17 Jun

22:30 - 13:05

BFS

ORD

44h 35m

3 stops

14:15 - 15:15

ORD

BFS

19h 00m

2 stops

£734Multiple Airlines

Tue, 9 Jun - Tue, 23 Jun

09:40 - 17:35

BHD

ORD

13h 55m

1 stop

21:15 - 17:35

ORD

BHD

14h 20m

1 stop

£778British Airways

Tue, 9 Jun - Tue, 23 Jun

17:30 - 14:15

BHD

ORD

26h 45m

1 stop

16:50 - 09:20

ORD

BHD

10h 30m

1 stop

£814Virgin Atlantic

Mon, 22 Jun - Mon, 29 Jun

09:50 - 21:25

BHD

ORD

17h 35m

2 stops

19:17 - 16:55

ORD

BHD

15h 38m

2 stops

£825KLM

Tue, 9 Jun - Tue, 23 Jun

06:30 - 13:50

BHD

ORD

13h 20m

1 stop

19:05 - 13:35

ORD

BHD

12h 30m

1 stop

£842British Airways

Wed, 19 Aug - Wed, 16 Sep

British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

9 Jun

BHD09:40Belfast City

13h 55m

1 stop

ORD17:35Chicago O'Hare Intl

23 Jun

ORD21:15Chicago O'Hare Intl

14h 20m

1 stop

BHD17:35Belfast City

£778

British Airways

19 Aug

BHD06:30Belfast City

13h 20m

1 stop

ORD13:50Chicago O'Hare Intl

16 Sept

ORD19:05Chicago O'Hare Intl

12h 30m

1 stop

BHD13:35Belfast City

£842

British Airways

19 Aug

BHD10:05Belfast City

11h 50m

1 stop

ORD15:55Chicago O'Hare Intl

16 Sept

ORD16:51Chicago O'Hare Intl

14h 44m

2 stops

BHD13:35Belfast City

£851

KLM flights from Belfast to Illinois

Our best KLM deals on Belfast to Illinois flight tickets

KLM

9 Jun

BHD09:50Belfast City

17h 35m

2 stops

ORD21:25Chicago O'Hare Intl

23 Jun

ORD19:17Chicago O'Hare Intl

15h 38m

2 stops

BHD16:55Belfast City

£825

KLM

22 May

BHD17:30Belfast City

26h 45m

1 stop

ORD14:15Chicago O'Hare Intl

25 May

ORD16:50Chicago O'Hare Intl

10h 30m

1 stop

BHD09:20Belfast City

£1,135

KLM

22 May

BHD09:50Belfast City

16h 24m

2 stops

ORD20:14Chicago O'Hare Intl

25 May

ORD11:09Chicago O'Hare Intl

16h 11m

2 stops

BHD09:20Belfast City

£1,138

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 21/6

18:00-18:15

2 stops30h 15m

Chicago O'Hare Intl

Sun 28/6

22:25-19:55

2 stops15h 30m

£605

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 19/8

08:30-19:15

3 stops40h 45m

Chicago O'Hare Intl

Thu 17/9

19:25-19:30

2 stops18h 05m

£692

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 19/8

08:30-19:15

3 stops40h 45m

Chicago O'Hare Intl

Wed 16/9

19:25-17:05

2 stops15h 40m

£697

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 19/8

08:30-19:15

3 stops40h 45m

Chicago O'Hare Intl

Wed 16/9

22:25-23:10

3 stops18h 45m

£722

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 11/6

06:10-09:00

3 stops32h 50m

Chicago O'Hare Intl

Wed 17/6

09:55-15:55

2 stops24h 00m

£731

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 9/6

22:30-13:05

3 stops44h 35m

Chicago O'Hare Intl

Tue 23/6

14:15-15:15

2 stops19h 00m

£734

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 9/6

09:40-17:35

1 stop13h 55m

Chicago O'Hare Intl

Tue 23/6

21:15-17:35

1 stop14h 20m

£778

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 22/6

17:30-14:15

1 stop26h 45m

Chicago O'Hare Intl

Mon 29/6

16:50-09:20

1 stop10h 30m

£814

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 9/6

09:50-21:25

2 stops17h 35m

Chicago O'Hare Intl

Tue 23/6

19:17-16:55

2 stops15h 38m

£825

Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 19/8

06:30-13:50

1 stop13h 20m

Chicago O'Hare Intl

Wed 16/9

19:05-13:35

1 stop12h 30m

£842

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	18h 40m
Direct flights	None

The fastest flight from Belfast to Illinois takes 18h 40m

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 May 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 £495	Free Cancellation	Rating 6.7 7,975 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.