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

Aer Lingus 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 December 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.

£292 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.

07:05 - 16:45BFS-ORD

39h 40m2 stops

19:20 - 22:20ORD-BFS

21h 00m2 stops

£422Multiple Airlines

Find Deal

Thu, 15 Jan - Thu, 22 Jan

20:25 - 17:20BFS-ORD

26h 55m3 stops

18:30 - 20:15ORD-BFS

19h 45m2 stops

£461Multiple Airlines

Find Deal

Tue, 13 Jan - Tue, 20 Jan

20:50 - 17:20BFS-ORD

26h 30m3 stops

18:30 - 19:05ORD-BFS

18h 35m2 stops

£463Multiple Airlines

Find Deal

Mon, 12 Jan - Mon, 19 Jan

06:30 - 11:22BFS-ORD

34h 52m3 stops

18:30 - 20:25ORD-BFS

19h 55m2 stops

£483Multiple Airlines

Find Deal

Thu, 15 Jan - Thu, 22 Jan

20:30 - 17:20BFS-ORD

26h 50m3 stops

16:38 - 20:10ORD-BFS

21h 32m3 stops

£502Multiple Airlines

Find Deal

Mon, 12 Jan - Mon, 19 Jan

06:30 - 17:20BFS-ORD

16h 50m2 stops

18:30 - 17:55ORD-BFS

17h 25m2 stops

£505Multiple Airlines

Find Deal

Tue, 13 Jan - Tue, 20 Jan

09:15 - 17:00BHD-ORD

13h 45m1 stop

17:10 - 10:20ORD-BHD

11h 10m1 stop

£541American Airlines

Find Deal

Wed, 14 Jan - Sun, 18 Jan

06:35 - 17:47BHD-ORD

17h 12m2 stops

13:35 - 10:20ORD-BHD

14h 45m2 stops

£545American Airlines

Find Deal

Wed, 14 Jan - Sun, 18 Jan

06:35 - 16:46BHD-ORD

16h 11m2 stops

11:40 - 10:20ORD-BHD

16h 40m2 stops

£545American Airlines

Find Deal

Wed, 14 Jan - Sun, 18 Jan

17:20 - 17:26BHD-ORD

30h 06m2 stops

13:57 - 16:50ORD-BHD

20h 53m2 stops

£590Delta

Find Deal

Wed, 14 Jan - Sun, 18 Jan

American Airlines flights from Belfast to Illinois

Our best American Airlines deals on Belfast to Illinois flight tickets

American Airlines

14 Jan

BHD09:15Belfast City

13h 45m

1 stop

ORD17:00Chicago O'Hare Intl

18 Jan

ORD17:10Chicago O'Hare Intl

11h 10m

1 stop

BHD10:20Belfast City

£541

Find similar

American Airlines

14 Jan

BHD06:35Belfast City

17h 12m

2 stops

ORD17:47Chicago O'Hare Intl

18 Jan

ORD13:35Chicago O'Hare Intl

14h 45m

2 stops

BHD10:20Belfast City

£545

Find similar

American Airlines

14 Jan

BHD06:35Belfast City

16h 11m

2 stops

ORD16:46Chicago O'Hare Intl

18 Jan

ORD11:40Chicago O'Hare Intl

16h 40m

2 stops

BHD10:20Belfast City

£545

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 15/1

07:05-16:45

2 stops39h 40m

Chicago O'Hare Intl

Thu 22/1

19:20-22:20

2 stops21h 00m

£422

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 13/1

20:25-17:20

3 stops26h 55m

Chicago O'Hare Intl

Tue 20/1

18:30-20:15

2 stops19h 45m

£461

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 12/1

20:50-17:20

3 stops26h 30m

Chicago O'Hare Intl

Mon 19/1

18:30-19:05

2 stops18h 35m

£463

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 15/1

06:30-11:22

3 stops34h 52m

Chicago O'Hare Intl

Thu 22/1

18:30-20:25

2 stops19h 55m

£483

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 12/1

20:30-17:20

3 stops26h 50m

Chicago O'Hare Intl

Mon 19/1

16:38-20:10

3 stops21h 32m

£502

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 13/1

06:30-17:20

2 stops16h 50m

Chicago O'Hare Intl

Tue 20/1

18:30-17:55

2 stops17h 25m

£505

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

09:15-17:00

1 stop13h 45m

Chicago O'Hare Intl

Sun 18/1

17:10-10:20

1 stop11h 10m

£541

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

06:35-17:47

2 stops17h 12m

Chicago O'Hare Intl

Sun 18/1

13:35-10:20

2 stops14h 45m

£545

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

06:35-16:46

2 stops16h 11m

Chicago O'Hare Intl

Sun 18/1

11:40-10:20

2 stops16h 40m

£545

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

17:20-17:26

2 stops30h 06m

Chicago O'Hare Intl

Sun 18/1

13:57-16:50

2 stops20h 53m

£590

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

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 £598. 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 £835. 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

Fastest flight time	14h 50m
Direct flights	None

The fastest flight from Belfast to Illinois takes 14h 50m

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 December 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 £491	Free Cancellation	Rating 6.7 7,546 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.