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Cheap flights from Northern Ireland to Illinois from £487

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/7. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
22 Jan — 29 Jan1
1 adult

Cheap flight deals from Northern Ireland to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Northern Ireland (GBNIR) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 January 2025.

Round-trip from

£496

One-way from

£487
3/2-6/2
  • 3/2-6/2
  • 4 total stops
  • 36h 35m total
  • Northern Ireland to Illinois
Search Deals
16/7
  • 16/7
  • 3 total stops
  • 29h 55m total
  • Northern Ireland to Illinois
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 17 January 2025.

Mon 3/208:35BFS - ORD
2 stops14h 45mMultiple Airlines
Thu 6/218:30ORD - BFS
2 stops21h 50mMultiple Airlines
Deal found 16/1£496
Mon 15/906:40BHD - ORD
1 stop13h 10mAmerican Airlines
Tue 30/917:45ORD - BHD
1 stop10h 50mAmerican Airlines
Deal found 16/1£530
Sun 9/217:20BHD - ORD
1 stop27h 10mKLM
Sun 16/216:25ORD - BHD
1 stop22h 35mKLM
Deal found 16/1£531
Thu 18/909:35BHD - ORD
1 stop14h 40mBritish Airways
Thu 2/1022:30ORD - BHD
1 stop11h 00mBritish Airways
Deal found 16/1£538
Sun 9/217:20BHD - ORD
2 stops48h 41mVirgin Atlantic
Sun 16/218:30ORD - BHD
2 stops40h 20mVirgin Atlantic
Deal found 16/1£538
Sun 21/920:05BHD - ORD
1 stop21h 45mFinnair
Tue 30/917:45ORD - BHD
1 stop10h 50mFinnair
Deal found 16/1£547
Sun 9/220:25BHD - ORD
1 stop24h 20mMultiple Airlines
Sun 16/217:00ORD - BHD
1 stop14h 55mMultiple Airlines
Deal found 16/1£559
Sun 9/206:30BHD - ORD
1 stop14h 00mDelta
Sun 16/213:40ORD - BHD
2 stops25h 20mDelta
Deal found 16/1£582
Sat 17/507:05BHD - ORD
1 stop12h 45mIberia
Wed 18/621:15ORD - BHD
1 stop14h 30mIberia
Deal found 16/1£682
Mon 20/107:10BHD - ORD
2 stops18h 05mAer Lingus
Wed 22/121:00ORD - BHD
2 stops13h 25mAer Lingus
Deal found 16/1£916

Find flights from Northern Ireland to Illinois within your budget

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 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 3/2

08:35-17:20

2 stops14h 45m

Chicago O'Hare Intl

Thu 6/2

18:30-22:20

2 stops21h 50m

£496

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 9/2

17:20-14:30

1 stop27h 10m

Chicago O'Hare Intl

Sun 16/2

16:25-21:00

1 stop22h 35m

£531

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 9/2

17:20-12:01

2 stops48h 41m

Chicago O'Hare Intl

Sun 16/2

18:30-16:50

2 stops40h 20m

£538

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 9/2

20:25-14:45

1 stop24h 20m

Chicago O'Hare Intl

Sun 16/2

17:00-13:55

1 stop14h 55m

£559

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 27/2

15:05-14:45

1 stop29h 40m

Chicago O'Hare Intl

Sun 9/3

16:27-18:40

2 stops21h 13m

£575

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 9/2

06:30-14:30

1 stop14h 00m

Chicago O'Hare Intl

Sun 16/2

13:40-21:00

2 stops25h 20m

£582

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 27/2

06:35-17:42

2 stops17h 07m

Chicago O'Hare Intl

Sun 9/3

16:27-13:55

2 stops16h 28m

£590

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 17/5

07:05-13:50

1 stop12h 45m

Chicago O'Hare Intl

Wed 18/6

21:15-17:45

1 stop14h 30m

£682

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 16/7

16:15-16:10

3 stops29h 55m

£487

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 11/7

15:40-16:10

3 stops30h 30m

£551

Flights are sorted by cheapest return flights first.

Deals found on 16/1

Showing 1-10 of 13 results
1
2

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.

Travel insights for flights from Northern Ireland to Illinois

Get recent, data-driven insights about flights from Northern Ireland to Illinois including ideal travel times, pricing trends, and more.

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 17 January 2025.
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

Delta
8.0
Very Good
8,513 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
664 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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
8,513 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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.

  • What are the cheapest airlines to fly from Northern Ireland to Illinois one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at £556. British Airways flights start at £716 while deals on American Airlines start at £1,358 one-way.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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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Fly with Cheapflights

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

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Can Cheapflights find flights from Northern Ireland to Illinois with no change fees?

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.

Can Cheapflights notify me if prices for flights from Northern Ireland to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from Northern Ireland to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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