What is the cheapest airline that flies from Belfast to Illinois?

British Airways, American Airlines, and KLM are the most popular carriers operating 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 November 2025.

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.

£302 Cheap Flights from Belfast to Illinois in 2025/26

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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.

10:40 - 17:00BHD-ORD

12h 20m1 stop

11:57 - 10:40ORD-BHD

17h 43m2 stops

£622American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

10:40 - 17:00BHD-ORD

12h 20m1 stop

19:45 - 14:15ORD-BHD

13h 30m1 stop

£623American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:35 - 17:53BHD-ORD

17h 18m2 stops

17:31 - 14:15ORD-BHD

15h 44m2 stops

£627American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:35 - 17:58BHD-ORD

17h 23m2 stops

17:31 - 14:15ORD-BHD

15h 44m2 stops

£628American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

10:15 - 16:00BFS-ORD

35h 45m3 stops

18:30 - 20:25ORD-BFS

19h 55m2 stops

£909Multiple Airlines

Find Deal

Thu, 1 Jan - Thu, 8 Jan

08:15 - 20:00BFS-ORD

17h 45m2 stops

18:30 - 20:25ORD-BFS

19h 55m2 stops

£949Multiple Airlines

Find Deal

Thu, 1 Jan - Thu, 8 Jan

10:15 - 16:00BFS-ORD

35h 45m3 stops

16:38 - 22:20ORD-BFS

23h 42m3 stops

£994Multiple Airlines

Find Deal

Thu, 1 Jan - Thu, 8 Jan

06:35 - 15:55BHD-ORD

15h 20m1 stop

21:15 - 18:15ORD-BHD

15h 00m1 stop

£3,302British Airways

Find Deal

Fri, 1 May - Fri, 8 May

06:35 - 17:43BHD-ORD

17h 08m2 stops

21:15 - 18:15ORD-BHD

15h 00m1 stop

£3,610British Airways

Find Deal

Fri, 1 May - Fri, 8 May

American Airlines flights from Belfast to Illinois

Our best American Airlines deals on Belfast to Illinois flight tickets

American Airlines

5 Mar

BHD10:40Belfast City

12h 20m

1 stop

ORD17:00Chicago O'Hare Intl

9 Mar

ORD11:57Chicago O'Hare Intl

17h 43m

2 stops

BHD10:40Belfast City

£622

Find similar

American Airlines

5 Mar

BHD10:40Belfast City

12h 20m

1 stop

ORD17:00Chicago O'Hare Intl

9 Mar

ORD19:45Chicago O'Hare Intl

13h 30m

1 stop

BHD14:15Belfast City

£623

Find similar

American Airlines

5 Mar

BHD06:35Belfast City

17h 18m

2 stops

ORD17:53Chicago O'Hare Intl

9 Mar

ORD17:31Chicago O'Hare Intl

15h 44m

2 stops

BHD14:15Belfast City

£627

Find similar

British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

1 May

BHD06:35Belfast City

15h 20m

1 stop

ORD15:55Chicago O'Hare Intl

8 May

ORD21:15Chicago O'Hare Intl

15h 00m

1 stop

BHD18:15Belfast City

£3,302

Find similar

British Airways

1 May

BHD06:35Belfast City

17h 08m

2 stops

ORD17:43Chicago O'Hare Intl

8 May

ORD21:15Chicago O'Hare Intl

15h 00m

1 stop

BHD18:15Belfast City

£3,610

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

10:40-17:00

1 stop12h 20m

Chicago O'Hare Intl

Mon 9/3

11:57-10:40

2 stops17h 43m

£622

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

10:40-17:00

1 stop12h 20m

Chicago O'Hare Intl

Mon 9/3

19:45-14:15

1 stop13h 30m

£623

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

06:35-17:53

2 stops17h 18m

Chicago O'Hare Intl

Mon 9/3

17:31-14:15

2 stops15h 44m

£627

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

06:35-17:58

2 stops17h 23m

Chicago O'Hare Intl

Mon 9/3

17:31-14:15

2 stops15h 44m

£628

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/1

10:15-16:00

3 stops35h 45m

Chicago O'Hare Intl

Thu 8/1

18:30-20:25

2 stops19h 55m

£909

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/1

08:15-20:00

2 stops17h 45m

Chicago O'Hare Intl

Thu 8/1

18:30-20:25

2 stops19h 55m

£949

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/1

10:15-16:00

3 stops35h 45m

Chicago O'Hare Intl

Thu 8/1

16:38-22:20

3 stops23h 42m

£994

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

06:35-15:55

1 stop15h 20m

Chicago O'Hare Intl

Fri 8/5

21:15-18:15

1 stop15h 00m

£3,302

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

06:35-17:43

2 stops17h 08m

Chicago O'Hare Intl

Fri 8/5

21:15-18:15

1 stop15h 00m

£3,610

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 9/1

06:30-19:17

2 stops42h 47m

£302

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 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

Prices

Airlines

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart on your flight to Illinois is on a Friday when prices can be found for as low as £601. This is often the case because there is less demand to fly during this day of the week. Flights from Belfast to Illinois on a Saturday will generally be more expensive and average around £838. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Cheap Belfast to Illinois flight deals and tips

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

Direct flights	None

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

Search flight deals

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 November 2025.
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 £493	Free Cancellation	Rating 6.7 7,527 reviews		Search British Airways flights

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.