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Cheap flights from Northern Ireland to Illinois from £524

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
20 Jul — 27 Jul1
1 adult

Cheap flight deals from Northern Ireland to Illinois

Keep the following information in mind while searching for Northern Ireland to Illinois flight deals. Data was last updated 15 July 2025.

Round-trip from

£524

Popular in

August

Cheapest in

September

Average price

£624
British Airways
  • British Airways
  • 8/9-15/9
  • 2 total stops
  • 27h 05m total
  • Northern Ireland to Illinois
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£1 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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Find flight deals from Northern Ireland to Illinois

Cheapest flights from Northern Ireland to Illinois
Explore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.

Mon 8/906:40BHD - ORD
1 stop14h 10mBritish Airways
Mon 15/922:35ORD - BHD
1 stop12h 55mBritish Airways
Deal found 14/7£524
Mon 8/906:30BHD - ORD
1 stop14h 10mDelta
Mon 15/918:49ORD - BHD
2 stops16h 06mDelta
Deal found 14/7£525
Wed 27/822:05BFS - ORD
3 stops25h 45mMultiple Airlines
Wed 3/922:15ORD - BFS
2 stops14h 50mMultiple Airlines
Deal found 13/7£533
Thu 30/1014:25BHD - ORD
2 stops32h 20mMultiple Airlines
Mon 3/1119:20ORD - BHD
3 stops19h 30mMultiple Airlines
Deal found 14/7£651
Thu 30/1017:20BHD - ORD
1 stop27h 00mVirgin Atlantic
Mon 3/1116:25ORD - BHD
1 stop22h 35mVirgin Atlantic
Deal found 14/7£670

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 15 July 2025.
Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.

Fly from

Northern Ireland

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 8/9

06:40-14:50

1 stop14h 10m

Chicago O'Hare Intl

Mon 15/9

22:35-17:30

1 stop12h 55m

£524

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 8/9

06:30-14:40

1 stop14h 10m

Chicago O'Hare Intl

Mon 15/9

18:49-16:55

2 stops16h 06m

£525

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 27/8

22:05-17:50

3 stops25h 45m

Chicago O'Hare Intl

Wed 3/9

22:15-19:05

2 stops14h 50m

£533

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 30/10

14:25-17:45

2 stops32h 20m

Chicago O'Hare Intl

Mon 3/11

19:20-20:50

3 stops19h 30m

£651

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 30/10

17:20-15:20

1 stop27h 00m

Chicago O'Hare Intl

Mon 3/11

16:25-21:00

1 stop22h 35m

£670

Flights are sorted by cheapest return flights first.

Deals found on 14/7

Best time to book a flight from Northern Ireland to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Northern Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Illinois
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 15 July 2025.
See what other customers who have flown with Delta, Virgin Atlantic, andBritish Airways from Northern Ireland to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
British Airways
6.6
Okay
7,134 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Northern Ireland to Illinois that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Illinois.

  • Can I find deals for business class flights from Northern Ireland to Illinois?

    Yes. Cheapflights offers flight deals from Northern Ireland to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Northern Ireland to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Illinois (average of £595). Flying from Northern Ireland to Illinois in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Northern Ireland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Northern Ireland to Illinois

Discover the top airline that operate flights from Northern Ireland to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£482Average£623FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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Certainly. Search results for flights to Illinois from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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