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Cheap flights from Northern Ireland to Illinois from £289

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 18 September 2025.

Round-trip from

£456

One-way from

£289
1/11-8/11
  • 1/11-8/11
  • 4 total stops
  • 38h 05m total
  • Northern Ireland to Illinois
Search Deals
1/11
  • 1/11
  • 3 total stops
  • 46h 01m 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 18 September 2025.

Sat 1/1106:00BFS - ORD
2 stops16h 45mMultiple Airlines
Sat 8/1119:20ORD - BFS
2 stops21h 20mMultiple Airlines
Deal found 17/9£456
Wed 24/906:50BHD - ORD
1 stop14h 00mBritish Airways
Tue 21/1017:40ORD - BHD
1 stop10h 55mBritish Airways
Deal found 16/9£486
Wed 24/906:30BHD - ORD
1 stop14h 10mDelta
Tue 21/1011:02ORD - BHD
2 stops23h 53mDelta
Deal found 16/9£492
Wed 24/906:30BHD - ORD
1 stop14h 10mVirgin Atlantic
Tue 21/1016:15ORD - BHD
1 stop18h 40mVirgin Atlantic
Deal found 17/9£522
Wed 24/910:20BHD - ORD
2 stops14h 40mAer Lingus
Tue 21/1021:15ORD - BHD
2 stops17h 40mAer Lingus
Deal found 17/9£664

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 18 September 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

BFS - ORD

BFSORD

Belfast Intl

Sat 1/11

06:00-17:45

2 stops16h 45m

Chicago O'Hare Intl

Sat 8/11

19:20-22:40

2 stops21h 20m

£456

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 5/3

11:05-18:45

1 stop13h 40m

Chicago O'Hare Intl

Mon 9/3

21:45-14:15

1 stop11h 30m

£489

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 1/11

08:10-01:11

3 stops46h 01m

£289

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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 18 September 2025.
See what other customers who have flown with British 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.
British Airways
6.7
Okay
7,367 reviews
Check prices

Comfort

6.7

Crew

7.6

Food

6.3

Overall

6.7

Entertainment

6.4

Boarding

6.9

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
7,367 reviews
British Airways
6.7
Okay
7,367 reviews
Check prices

Comfort

6.7

Crew

7.6

Food

6.3

Overall

6.7

Entertainment

6.4

Boarding

6.9

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

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.

  • How long is the flight from Northern Ireland to Illinois?

    Departing from Northern Ireland to Illinois will take you 13h 40m. There are 3644 mi between Northern Ireland and Illinois.

  • 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 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£476Average£611FlexibilityNo 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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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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