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

British Airways is the most popular carrier 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.

£306 Cheap Flights from Belfast to Illinois in 2025/26

1 adult

0 bags

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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.

12:45 - 14:45BFS-ORD

32h 00m3 stops

18:30 - 13:45ORD-BFS

13h 15m2 stops

£485Multiple Airlines

Find Deal

Sat, 6 Dec - Wed, 10 Dec

12:45 - 14:45BFS-ORD

32h 00m3 stops

18:30 - 23:55ORD-BFS

23h 25m3 stops

£522Multiple Airlines

Find Deal

Sat, 6 Dec - Wed, 10 Dec

20:55 - 17:20BFS-ORD

26h 25m2 stops

18:30 - 21:50ORD-BFS

21h 20m2 stops

£593Multiple Airlines

Find Deal

Tue, 23 Dec - Tue, 30 Dec

11:05 - 18:45BHD-ORD

13h 40m1 stop

18:10 - 10:40ORD-BHD

11h 30m1 stop

£623American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:00 - 17:55BFS-ORD

17h 55m2 stops

15:50 - 13:45ORD-BFS

15h 55m2 stops

£624Multiple Airlines

Find Deal

Sat, 6 Dec - Wed, 10 Dec

10:40 - 17:00BHD-ORD

12h 20m1 stop

21:45 - 14:15ORD-BHD

11h 30m1 stop

£624American 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

06:30 - 14:20BHD-ORD

13h 50m1 stop

16:25 - 21:00ORD-BHD

22h 35m1 stop

£641Delta

Find Deal

Sat, 6 Dec - Wed, 10 Dec

17:25 - 14:20BHD-ORD

26h 55m1 stop

14:10 - 21:20ORD-BHD

49h 10m2 stops

£1,064Virgin Atlantic

Find Deal

Mon, 30 Mar - Sat, 4 Apr

09:50 - 15:55BHD-ORD

12h 05m1 stop

21:15 - 17:15ORD-BHD

14h 00m1 stop

£1,074British Airways

Find Deal

Mon, 30 Mar - Sat, 4 Apr

American Airlines flights from Belfast to Illinois

Our best American Airlines deals on Belfast to Illinois flight tickets

American Airlines

5 Mar

BHD11:05Belfast City

13h 40m

1 stop

ORD18:45Chicago O'Hare Intl

9 Mar

ORD18:10Chicago O'Hare Intl

11h 30m

1 stop

BHD10:40Belfast City

£623

Find similar

American Airlines

5 Mar

BHD10:40Belfast City

12h 20m

1 stop

ORD17:00Chicago O'Hare Intl

9 Mar

ORD21:45Chicago O'Hare Intl

11h 30m

1 stop

BHD14:15Belfast City

£624

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

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 6/12

12:45-14:45

3 stops32h 00m

Chicago O'Hare Intl

Wed 10/12

18:30-13:45

2 stops13h 15m

£485

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 6/12

12:45-14:45

3 stops32h 00m

Chicago O'Hare Intl

Wed 10/12

18:30-23:55

3 stops23h 25m

£522

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 23/12

20:55-17:20

2 stops26h 25m

Chicago O'Hare Intl

Tue 30/12

18:30-21:50

2 stops21h 20m

£593

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

11:05-18:45

1 stop13h 40m

Chicago O'Hare Intl

Mon 9/3

18:10-10:40

1 stop11h 30m

£623

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 6/12

06:00-17:55

2 stops17h 55m

Chicago O'Hare Intl

Wed 10/12

15:50-13:45

2 stops15h 55m

£624

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

10:40-17:00

1 stop12h 20m

Chicago O'Hare Intl

Mon 9/3

21:45-14:15

1 stop11h 30m

£624

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

Sat 6/12

06:30-14:20

1 stop13h 50m

Chicago O'Hare Intl

Wed 10/12

16:25-21:00

1 stop22h 35m

£641

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 30/3

17:25-14:20

1 stop26h 55m

Chicago O'Hare Intl

Sat 4/4

14:10-21:20

2 stops49h 10m

£1,064

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 30/3

09:50-15:55

1 stop12h 05m

Chicago O'Hare Intl

Sat 4/4

21:15-17:15

1 stop14h 00m

£1,074

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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 £602. 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 £839. 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 7,508 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.