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Cheap flights from Northern Ireland to Illinois from £327

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Illinois departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Northern Ireland to Illinois

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:30 - 17:20BFS-ORD
16h 50m2 stops
Multiple Airlines Logo
18:30 - 20:40ORD-BFS
20h 10m2 stops
£585Multiple Airlines
Find Deal
Thu, 8 Jan - Thu, 15 Jan
Multiple Airlines Logo
07:05 - 15:25BFS-ORD
38h 20m3 stops
Multiple Airlines Logo
16:38 - 22:20ORD-BFS
23h 42m3 stops
£619Multiple Airlines
Find Deal
Thu, 8 Jan - Thu, 15 Jan
American Airlines Logo
06:35 - 15:25BHD-ORD
14h 50m1 stop
American Airlines Logo
21:45 - 16:50ORD-BHD
13h 05m1 stop
£623American Airlines
Find Deal
Wed, 14 Jan - Sun, 18 Jan
American Airlines Logo
09:15 - 15:25BHD-ORD
12h 10m1 stop
American Airlines Logo
13:25 - 13:55ORD-BHD
18h 30m2 stops
£624American Airlines
Find Deal
Wed, 14 Jan - Sun, 18 Jan
Multiple Airlines Logo
07:05 - 15:25BFS-ORD
38h 20m3 stops
Multiple Airlines Logo
10:39 - 20:40ORD-BFS
28h 01m2 stops
£625Multiple Airlines
Find Deal
Thu, 8 Jan - Thu, 15 Jan
American Airlines Logo
06:35 - 16:46BHD-ORD
16h 11m2 stops
American Airlines Logo
11:40 - 10:20ORD-BHD
16h 40m2 stops
£627American Airlines
Find Deal
Wed, 14 Jan - Sun, 18 Jan
American Airlines Logo
06:35 - 18:01BHD-ORD
17h 26m2 stops
American Airlines Logo
13:25 - 10:20ORD-BHD
14h 55m2 stops
£628American Airlines
Find Deal
Wed, 14 Jan - Sun, 18 Jan
Virgin Atlantic Logo
17:20 - 17:55BHD-ORD
30h 35m2 stops
Virgin Atlantic Logo
14:00 - 16:50ORD-BHD
20h 50m2 stops
£695Virgin Atlantic
Find Deal
Wed, 14 Jan - Sun, 18 Jan
Multiple Airlines Logo
06:30 - 19:30BFS-ORD
19h 00m3 stops
Multiple Airlines Logo
18:30 - 16:00ORD-BFS
15h 30m2 stops
£727Multiple Airlines
Find Deal
Tue, 6 Jan - Tue, 13 Jan
Multiple Airlines Logo
06:30 - 19:30BFS-ORD
19h 00m3 stops
Multiple Airlines Logo
15:55 - 14:45ORD-BFS
16h 50m3 stops
£811Multiple Airlines
Find Deal
Tue, 6 Jan - Tue, 13 Jan

American Airlines flights from Northern Ireland to Illinois

Our best American Airlines deals on Northern Ireland to Illinois flight tickets
American Airlines
14 Jan
BHD06:35Belfast City
14h 50m
1 stop
ORD15:25Chicago O'Hare Intl
18 Jan
ORD21:45Chicago O'Hare Intl
13h 05m
1 stop
BHD16:50Belfast City
£623
Find similar
American Airlines
14 Jan
BHD09:15Belfast City
12h 10m
1 stop
ORD15:25Chicago O'Hare Intl
18 Jan
ORD13:25Chicago O'Hare Intl
18h 30m
2 stops
BHD13:55Belfast City
£624
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
£627
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 25 November 2025.
Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 8/1

06:30-17:20

2 stops16h 50m

Chicago O'Hare Intl

Thu 15/1

18:30-20:40

2 stops20h 10m

£585

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 8/1

07:05-15:25

3 stops38h 20m

Chicago O'Hare Intl

Thu 15/1

16:38-22:20

3 stops23h 42m

£619

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

06:35-15:25

1 stop14h 50m

Chicago O'Hare Intl

Sun 18/1

21:45-16:50

1 stop13h 05m

£623

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

09:15-15:25

1 stop12h 10m

Chicago O'Hare Intl

Sun 18/1

13:25-13:55

2 stops18h 30m

£624

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 8/1

07:05-15:25

3 stops38h 20m

Chicago O'Hare Intl

Thu 15/1

10:39-20:40

2 stops28h 01m

£625

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

£627

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

06:35-18:01

2 stops17h 26m

Chicago O'Hare Intl

Sun 18/1

13:25-10:20

2 stops14h 55m

£628

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 14/1

17:20-17:55

2 stops30h 35m

Chicago O'Hare Intl

Sun 18/1

14:00-16:50

2 stops20h 50m

£695

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 6/1

06:30-19:30

3 stops19h 00m

Chicago O'Hare Intl

Tue 13/1

18:30-16:00

2 stops15h 30m

£727

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 6/1

06:30-19:30

3 stops19h 00m

Chicago O'Hare Intl

Tue 13/1

15:55-14:45

3 stops16h 50m

£811

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

See travel insights to Illinois from

How to get the cheapest flight ticket from Northern Ireland 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 £605. This is often the case because there is less demand to fly during this day of the week. Flights from Northern Ireland to Illinois on a Saturday will generally be more expensive and average around £843. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Cheap Northern Ireland to Illinois flight deals and tips

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

Direct flights

None
There are no direct flights from Northern Ireland to Illinois. There are no popular flight routes from Northern Ireland to Illinois.
Search flight deals

  • When did momondo last update prices for flights from Northern Ireland to Illinois?

    Prices for flights from Northern Ireland to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Northern Ireland to Illinois?

  • How old do you have to be to fly from Northern Ireland to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Northern Ireland to Illinois

Compare and see reviews for airlines that fly from Northern Ireland to Illinois with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £496Free CancellationRating
6.7
7,535 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland 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 Northern Ireland.

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

All flight searches from Northern Ireland to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Northern Ireland to Illinois?

Once you have performed a search for Northern Ireland to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Northern Ireland 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 Northern Ireland and alert you when they change.

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