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Cheap flights from Northern Ireland to Illinois from £569

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
6 May — 13 May1
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 1 May 2025.

Round-trip from

£569

Popular in

March

Cheapest in

September

Average price

£651
Virgin Atlantic
  • Virgin Atlantic
  • 7/6-14/6
  • 4 total stops
  • 40h 22m total
  • Northern Ireland to Illinois
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£191 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£41 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 1 May 2025.

Sat 7/606:30BHD - ORD
2 stops18h 44mVirgin Atlantic
Sat 14/617:37ORD - BHD
2 stops21h 38mVirgin Atlantic
Deal found 30/4£569
Sat 7/606:30BHD - ORD
2 stops21h 01mDelta
Sat 14/617:37ORD - BHD
2 stops21h 38mDelta
Deal found 30/4£571
Sat 7/607:05BHD - ORD
1 stop17h 10mBritish Airways
Sat 14/620:30ORD - BHD
1 stop14h 45mBritish Airways
Deal found 30/4£584
Sat 7/609:35BHD - ORD
1 stop14h 40mAmerican Airlines
Sat 14/620:30ORD - BHD
1 stop12h 35mAmerican Airlines
Deal found 30/4£601
Sat 14/616:30BFS - ORD
2 stops35h 26mMultiple Airlines
Sat 21/607:04ORD - BFS
2 stops33h 26mMultiple Airlines
Deal found 30/4£671
Tue 10/607:05BHD - ORD
2 stops42h 58mMultiple Airlines
Fri 13/607:04ORD - BHD
3 stops31h 21mMultiple Airlines
Deal found 30/4£703
Tue 10/606:30BHD - ORD
1 stop13h 40mKLM
Fri 13/614:00ORD - BHD
2 stops25h 15mKLM
Deal found 30/4£935

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 1 May 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

Sat 7/6

06:30-19:14

2 stops18h 44m

Chicago O'Hare Intl

Sat 14/6

17:37-21:15

2 stops21h 38m

£569

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/6

06:30-21:31

2 stops21h 01m

Chicago O'Hare Intl

Sat 14/6

17:37-21:15

2 stops21h 38m

£571

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/6

07:05-18:15

1 stop17h 10m

Chicago O'Hare Intl

Sat 14/6

20:30-17:15

1 stop14h 45m

£584

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/6

09:35-18:15

1 stop14h 40m

Chicago O'Hare Intl

Sat 14/6

20:30-15:05

1 stop12h 35m

£601

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 14/6

16:30-21:56

2 stops35h 26m

Chicago O'Hare Intl

Sat 21/6

07:04-22:30

2 stops33h 26m

£671

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 10/6

07:05-20:03

2 stops42h 58m

Chicago O'Hare Intl

Fri 13/6

07:04-20:25

3 stops31h 21m

£703

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 10/6

06:30-14:10

1 stop13h 40m

Chicago O'Hare Intl

Fri 13/6

14:00-21:15

2 stops25h 15m

£935

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 16/5

06:45-19:00

2 stops18h 15m

£614

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 16/5

06:30-14:10

1 stop13h 40m

£1,277

Flights are sorted by cheapest return flights first.

Deals found on 30/4

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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 1 May 2025.
Delta
8.0
Very Good
7,934 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
643 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 1 May 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£486Average£592FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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How does Cheapflights help users find flights from Northern Ireland to Illinois?

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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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