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Cheap flights from Northern Ireland to Chicago from £436

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
5 May — 12 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Chicago
Explore the most affordable flight options available from Northern Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 April 2026.

Mon 18/518:10
BFS
-
ORD
3 stops28h 49m
Multiple Airlines
Mon 25/509:55
ORD
-
BFS
2 stops24h 20m
Multiple Airlines
Deal found 2/4£647
Thu 12/1106:35
BHD
-
ORD
2 stops18h 15m
British Airways
Mon 16/1110:29
ORD
-
BHD
2 stops18h 11m
British Airways
Deal found 30/3£713
Fri 13/1106:45
BHD
-
ORD
1 stop16h 20m
British Airways
Tue 17/1120:40
ORD
-
BHD
1 stop14h 05m
British Airways
Deal found 3/4£716
Thu 3/1220:00
BHD
-
ORD
1 stop25h 20m
British Airways
Mon 7/1220:40
ORD
-
BHD
1 stop13h 25m
British Airways
Deal found 1/4£720
Sun 19/413:10
BHD
-
ORD
1 stop32h 45m
British Airways
Sun 26/420:35
ORD
-
BHD
1 stop12h 00m
British Airways
Deal found 1/4£807
Fri 15/508:55
BFS
-
ORD
2 stops16h 20m
Multiple Airlines
Fri 22/515:45
ORD
-
BFS
2 stops23h 30m
Multiple Airlines
Deal found 31/3£907
Fri 1/506:30
BHD
-
ORD
1 stop11h 50m
Finnair
Fri 8/520:35
ORD
-
BHD
1 stop12h 55m
Finnair
Deal found 4/4£4,415
Fri 1/509:50
BHD
-
ORD
2 stops30h 38m
Multiple Airlines
Fri 8/511:05
ORD
-
BHD
2 stops23h 50m
Multiple Airlines
Deal found 2/4£4,427
Fri 1/517:30
BHD
-
ORD
1 stop26h 45m
Virgin Atlantic
Fri 8/516:20
ORD
-
BHD
1 stop18h 35m
Virgin Atlantic
Deal found 2/4£4,646

Find flight deals from Northern Ireland to Chicago

Keep the following information in mind while searching for Northern Ireland to Chicago flight deals. Data was last updated 5 April 2026.

Round-trip from

£647

One-way from

£436
18/5-25/5
  • 18/5-25/5
  • 5 total stops
  • 53h 09m total
  • Northern Ireland to Chicago
Search Deals
10/4
  • 10/4
  • 3 total stops
  • 51h 40m total
  • Northern Ireland to Chicago
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Chicago 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 5 April 2026.
Use the filters below to find and compare flights from Northern Ireland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 18/5

06:40-19:40

2 stops19h 00m

Chicago O'Hare Intl

Mon 25/5

09:55-16:15

2 stops24h 20m

£707

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 19/4

13:10-12:20

1 stop29h 10m

Chicago O'Hare Intl

Sun 26/4

17:45-13:25

2 stops13h 40m

£811

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 15/5

08:55-19:15

2 stops16h 20m

Chicago O'Hare Intl

Fri 22/5

15:45-21:15

2 stops23h 30m

£907
Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

06:30-12:20

1 stop11h 50m

Chicago O'Hare Intl

Fri 8/5

20:35-15:30

1 stop12h 55m

£4,415

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

17:30-14:15

1 stop26h 45m

Chicago O'Hare Intl

Fri 8/5

16:20-16:55

1 stop18h 35m

£4,646

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 1/5

06:30-13:50

1 stop13h 20m

Chicago O'Hare Intl

Fri 8/5

16:19-15:30

2 stops17h 11m

£4,951

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 29/4

06:30-19:58

2 stops19h 28m

Chicago O'Hare Intl

Wed 6/5

19:05-15:40

1 stop14h 35m

£5,668
Cheapest one-way

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 10/4

18:20-16:00

3 stops51h 40m

£436
Fastest single journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 10/4

20:10-14:55

1 stop24h 45m

£962

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Sorted by cheapest first

Best time to book a flight from Northern Ireland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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 Chicago
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Chicago. 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 Chicago?

    For as low as £4,415, British Airways can have you in Chicago from Northern Ireland in 11h 50m. There are 3644 mi between Northern Ireland and Chicago. This flight may include one or multiple stops.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Northern Ireland to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to O'Hare Intl flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
Stansted to O'Hare Intl flights
London City to O'Hare Intl flights
Luton to O'Hare Intl flights
Heathrow to St. Louis flights
Manchester to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Birmingham to O'Hare Intl flights
Manchester to Midway flights
Gatwick to Midway flights
Stansted to St. Louis flights
Gatwick to St. Louis flights
Glasgow Intl to O'Hare Intl flights
Edinburgh to Midway flights
Birmingham to Midway flights
Leeds to O'Hare Intl flights
Glasgow Intl to Midway flights
Newcastle upon Tyne to O'Hare Intl flights
Luton to St. Louis flights
London City to St. Louis flights
Newcastle upon Tyne to Midway flights
Cardiff to O'Hare Intl flights
Manchester to St. Louis flights
Bristol to O'Hare Intl flights
Heathrow to Champaign flights
Norwich to O'Hare Intl flights
Heathrow to Peoria flights
Grimsby to O'Hare Intl flights
Heathrow to Moline flights
Southampton to O'Hare Intl flights
Leeds to Midway flights
Edinburgh to St. Louis flights
Cardiff to Midway flights
Exeter to O'Hare Intl flights
Heathrow to Springfield flights
Liverpool to O'Hare Intl flights
Bristol to Midway flights
Manchester to Moline flights
Edinburgh to Moline flights
London City to Midway flights
Gatwick to Champaign flights
Newquay to O'Hare Intl flights
Manchester to Peoria flights
Southampton to Midway flights
Southend to O'Hare Intl flights
Glasgow Intl to St. Louis flights
Birmingham to St. Louis flights
Newcastle upon Tyne to St. Louis flights

Top airline flying from Northern Ireland to Chicago

Discover the top airline that operate flights from Northern Ireland to Chicago. 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 5 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£508Average£664FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Northern Ireland to Chicago flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Chicago?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Chicago.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Northern Ireland to Chicago flexibly with Cheapflights today.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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