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 September 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.

£486 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

Cheap return flights

10:40 - 17:00BHD-ORD

12h 20m1 stop

21:45 - 14:15ORD-BHD

11h 30m1 stop

£488American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

11:05 - 18:45BHD-ORD

13h 40m1 stop

21:45 - 14:15ORD-BHD

11h 30m1 stop

£489American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

16:35 - 17:45BFS-ORD

30h 10m2 stops

19:20 - 22:20ORD-BFS

21h 00m2 stops

£521Multiple Airlines

Find Deal

Thu, 30 Oct - Thu, 6 Nov

16:35 - 17:45BFS-ORD

30h 10m2 stops

19:20 - 22:20ORD-BFS

21h 00m3 stops

£526Multiple Airlines

Find Deal

Thu, 30 Oct - Thu, 6 Nov

16:50 - 16:15BFS-ORD

28h 25m2 stops

17:20 - 13:40ORD-BFS

14h 20m1 stop

£752Multiple Airlines

Find Deal

Thu, 30 Oct - Thu, 6 Nov

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

ORD21:45Chicago O'Hare Intl

11h 30m

1 stop

BHD14:15Belfast City

£488

Find similar

American Airlines

5 Mar

BHD11:05Belfast City

13h 40m

1 stop

ORD18:45Chicago O'Hare Intl

9 Mar

ORD21:45Chicago O'Hare Intl

11h 30m

1 stop

BHD14:15Belfast City

£489

Find similar

British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

24 Sept

BHD10:00Belfast City

13h 00m

1 stop

ORD17:00Chicago O'Hare Intl

21 Oct

ORD17:40Chicago O'Hare Intl

10h 55m

1 stop

BHD10:35Belfast City

£485

Find similar

British Airways

24 Sept

BHD06:50Belfast City

14h 00m

1 stop

ORD14:50Chicago O'Hare Intl

21 Oct

ORD17:40Chicago O'Hare Intl

10h 55m

1 stop

BHD10:35Belfast City

£486

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

21:45-14:15

1 stop11h 30m

£488

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

11:05-18:45

1 stop13h 40m

Chicago O'Hare Intl

Mon 9/3

21:45-14:15

1 stop11h 30m

£489

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 30/10

16:35-17:45

2 stops30h 10m

Chicago O'Hare Intl

Thu 6/11

19:20-22:20

2 stops21h 00m

£521

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 30/10

16:35-17:45

2 stops30h 10m

Chicago O'Hare Intl

Thu 6/11

19:20-22:20

3 stops21h 00m

£526

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 30/10

16:50-16:15

2 stops28h 25m

Chicago O'Hare Intl

Thu 6/11

17:20-13:40

1 stop14h 20m

£752

Flights are sorted by cheapest return flights first.

Sorted 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

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 £581. 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 £810. 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 September 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 £476	Free Cancellation	Rating 6.7 7,363 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.