When did momondo last update prices for flights from Belfast to Illinois?

Prices for flights from Belfast to Illinois refresh daily.

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 travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$421 Cheap Flights from Belfast to Illinois in 2026

Find the cheapest flights from Belfast to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:10 am - 2:00 pm

BFS

ORD

34h 50m

2 stops

7:25 pm - 10:20 pm

ORD

BFS

20h 55m

2 stops

$795Multiple Airlines

Mon, Sep 21 - Wed, Sep 30

9:05 pm - 8:12 pm

BFS

ORD

29h 07m

3 stops

7:25 pm - 7:40 pm

ORD

BFS

18h 15m

2 stops

$827Multiple Airlines

Fri, Sep 25 - Tue, Sep 29

9:35 pm - 8:12 pm

BFS

ORD

28h 37m

3 stops

7:25 pm - 4:15 pm

ORD

BFS

14h 50m

2 stops

$843Multiple Airlines

Mon, Sep 7 - Mon, Sep 14

6:35 pm - 9:20 pm

BFS

ORD

32h 45m

2 stops

7:25 pm - 7:40 pm

ORD

BFS

18h 15m

2 stops

$844Multiple Airlines

Fri, Sep 25 - Tue, Sep 29

9:35 pm - 8:12 pm

BFS

ORD

28h 37m

3 stops

7:25 pm - 10:00 pm

ORD

BFS

20h 35m

3 stops

$852Multiple Airlines

Mon, Sep 7 - Mon, Sep 14

9:35 pm - 7:48 pm

BFS

ORD

28h 13m

2 stops

7:25 pm - 8:40 pm

ORD

BFS

19h 15m

2 stops

$856Multiple Airlines

Mon, Sep 7 - Mon, Sep 14

11:35 am - 6:15 pm

BHD

ORD

12h 40m

1 stop

5:00 pm - 1:35 pm

ORD

BHD

14h 35m

1 stop

$919British Airways

Mon, Sep 21 - Wed, Sep 30

9:40 am - 9:12 pm

BHD

ORD

17h 32m

2 stops

7:05 pm - 12:00 pm

ORD

BHD

10h 55m

1 stop

$925British Airways

Mon, Sep 21 - Wed, Sep 30

9:50 am - 10:32 pm

BHD

ORD

18h 42m

2 stops

12:29 pm - 9:20 am

ORD

BHD

14h 51m

2 stops

$985KLM

Fri, Sep 25 - Tue, Sep 29

6:50 am - 7:15 pm

BHD

ORD

18h 25m

2 stops

3:45 pm - 1:10 pm

ORD

BHD

15h 25m

2 stops

$1,042Aer Lingus

Sun, Aug 23 - Sun, Aug 30

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British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

Sep 21

BHD11:35 amBelfast City

12h 40m

1 stop

ORD6:15 pmChicago O'Hare Intl

Sep 30

ORD5:00 pmChicago O'Hare Intl

14h 35m

1 stop

BHD1:35 pmBelfast City

$919

British Airways

Sep 21

BHD9:40 amBelfast City

17h 32m

2 stops

ORD9:12 pmChicago O'Hare Intl

Sep 30

ORD7:05 pmChicago O'Hare Intl

10h 55m

1 stop

BHD12:00 pmBelfast City

$925

British Airways

Sep 25

BHD6:30 amBelfast City

15h 25m

1 stop

ORD3:55 pmChicago O'Hare Intl

Sep 29

ORD7:05 pmChicago O'Hare Intl

14h 15m

1 stop

BHD3:20 pmBelfast City

$948

KLM flights from Belfast to Illinois

Our best KLM deals on Belfast to Illinois flight tickets

KLM

Sep 25

BHD9:50 amBelfast City

18h 42m

2 stops

ORD10:32 pmChicago O'Hare Intl

Sep 29

ORD12:29 pmChicago O'Hare Intl

14h 51m

2 stops

BHD9:20 amBelfast City

$985

KLM

Aug 23

BHD5:30 pmBelfast City

27h 00m

1 stop

ORD2:30 pmChicago O'Hare Intl

Aug 30

ORD4:20 pmChicago O'Hare Intl

11h 00m

1 stop

BHD9:20 amBelfast City

$1,323

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 9/21

9:10 am-2:00 pm

2 stops34h 50m

Chicago O'Hare Intl

Wed 9/30

7:25 pm-10:20 pm

2 stops20h 55m

$795

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 9/25

9:05 pm-8:12 pm

3 stops29h 07m

Chicago O'Hare Intl

Tue 9/29

7:25 pm-7:40 pm

2 stops18h 15m

$827

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 9/7

9:35 pm-8:12 pm

3 stops28h 37m

Chicago O'Hare Intl

Mon 9/14

7:25 pm-4:15 pm

2 stops14h 50m

$843

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 9/25

6:35 pm-9:20 pm

2 stops32h 45m

Chicago O'Hare Intl

Tue 9/29

7:25 pm-7:40 pm

2 stops18h 15m

$844

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 9/7

9:35 pm-8:12 pm

3 stops28h 37m

Chicago O'Hare Intl

Mon 9/14

7:25 pm-10:00 pm

3 stops20h 35m

$852

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 9/7

9:35 pm-7:48 pm

2 stops28h 13m

Chicago O'Hare Intl

Mon 9/14

7:25 pm-8:40 pm

2 stops19h 15m

$856

Quickest round-trip

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 9/21

11:35 am-6:15 pm

1 stop12h 40m

Chicago O'Hare Intl

Wed 9/30

5:00 pm-1:35 pm

1 stop14h 35m

$919

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 9/21

9:40 am-9:12 pm

2 stops17h 32m

Chicago O'Hare Intl

Wed 9/30

7:05 pm-12:00 pm

1 stop10h 55m

$925

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 9/25

9:50 am-10:32 pm

2 stops18h 42m

Chicago O'Hare Intl

Tue 9/29

12:29 pm-9:20 am

2 stops14h 51m

$985

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 8/23

6:50 am-7:15 pm

2 stops18h 25m

Chicago O'Hare Intl

Sun 8/30

3:45 pm-1:10 pm

2 stops15h 25m

$1,042

Flights are sorted by cheapest round-trip 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

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

British Airways is the most popular carrier operating from Belfast to Illinois

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	12h 40m
Direct flights	None

The fastest flight from Belfast to Illinois takes 12h 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 refresh daily.
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 travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Belfast to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Belfast which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Belfast to Illinois?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belfast to Illinois.

I’m not ready to book a flight from Belfast to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Belfast are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.