How long is the flight from Northern Ireland to Chicago?

For as low as £675, British Airways can have you in Chicago from Northern Ireland in 12h 40m. There are 3644 mi between Northern Ireland and Chicago.

In terms of precipitation, rainfall in Chicago 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 Chicago when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago, 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).

What is the cheapest time of day to fly from NIR to CHI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Chicago as you normally would.

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.

£310+ Cheap Flights from Northern Ireland to Chicago

Cheap flight deals from Northern Ireland to Chicago

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 11 September 2026.

Fri 23/1006:05 -

3 stops22h 01m

Fri 30/1019:30 -

3 stops21h 30m

Deal found 8/9£640

Mon 14/906:30 -

1 stop11h 55m

Sun 20/922:25 -

1 stop14h 20m

Deal found 6/9£645

Wed 4/1109:15 -

1 stop16h 15m

Sun 8/1117:10 -

1 stop14h 40m

Deal found 5/9£675

Thu 5/1108:50 -

2 stops15h 30m

Mon 9/1114:31 -

2 stops14h 19m

Deal found 8/9£678

Thu 1/1020:35 -

2 stops26h 11m

Mon 5/1016:50 -

2 stops16h 40m

Deal found 9/9£680

Wed 21/1008:15 -

2 stops17h 33m

Wed 28/1019:30 -

3 stops19h 50m

Deal found 6/9£683

Mon 14/909:40 -

1 stop32h 45m

Sun 20/908:05 -

2 stops20h 25m

Deal found 6/9£683

Mon 14/906:30 -

2 stops20h 42m

Sun 20/908:05 -

2 stops20h 25m

Deal found 6/9£687

Mon 14/907:00 -

2 stops21h 59m

Sun 20/917:10 -

1 stop19h 15m

Deal found 6/9£900

Thu 5/1107:20 -

2 stops16h 00m

Thu 5/1120:05 -

2 stops20h 40m

Deal found 7/9£932

Find flight deals from Northern Ireland to Chicago

Round-trip from	£640
One-way from	£310

23/10-30/10
6 total stops
43h 31m total
Northern Ireland to Chicago

Search Deals

8/2-31/12
3 total stops
29h 50m total
Northern Ireland to Chicago

Search Deals

Cheapflights Fare Finder

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 Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sun 7/2

20:00-19:15

2 stops29h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£333

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Tue 9/2

12:05-19:15

3 stops37h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£341

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 8/2

22:05-14:55

2 stops46h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£369

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Tue 29/9

16:40-18:15

3 stops55h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£385

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sun 7/2

17:55-14:55

2 stops27h 00m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£385

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sun 7/2

12:00-13:45

1 stop31h 45m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£475

Fastest return journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Tue 29/9

08:05-19:15

2 stops17h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£509

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 23/10

06:05-22:06

3 stops22h 01m

Chicago O'Hare Intl

Fri 30/10

19:30-22:00

3 stops21h 30m

£640

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Thu 5/11

08:50-15:30

1 stop12h 40m

Chicago O'Hare Intl

Mon 9/11

18:35-16:05

1 stop15h 30m

£675

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

09:15-19:30

1 stop16h 15m

Chicago O'Hare Intl

Sun 8/11

17:10-13:50

1 stop14h 40m

£675

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 13 resultsSorted 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.

BFS-ORD

BHD-ORD

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

GBNIR-CHI

BFS-ORD

BHD-ORD

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Northern Ireland to Chicago?
For as low as £675, British Airways can have you in Chicago from Northern Ireland in 12h 40m. There are 3644 mi between Northern Ireland and Chicago.
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

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London City to Moline flights

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Glasgow Intl to St. Louis flights

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London City to Evansville flights

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Manchester to Moline flights

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London City to Midway flights

Newcastle upon Tyne to St. Louis flights

Leeds to St. Louis flights

Cardiff to O'Hare Intl flights

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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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Cheap flights from Northern Ireland to Chicago from £310

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Northern Ireland to Chicago

Cheapest flights from Northern Ireland to ChicagoExplore 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 11 September 2026.

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 11 September 2026.

Best flights from Northern Ireland to ChicagoDiscover carefully curated flight deals from Northern Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from Northern Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Northern Ireland to ChicagoDiscover last-minute flight deals from Northern Ireland to Chicago. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to Chicago. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Northern Ireland to ChicagoSearch for one-way flight options from Northern Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Search for one-way flight options from Northern Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Find flight deals from Northern Ireland to Chicago

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One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Northern Ireland to Chicago that are best for you.

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.

Cheapflights Insights

Related info for your journey

How long is the flight from Northern Ireland to Chicago?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Chicago

Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 11 September 2026.

Complete your trip

Complete your trip to Chicago by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Illinois

Book a non-stop flight to one of these other cities located in Illinois.

Search flights from Northern Ireland to Chicago by cabin class

Find flights from Northern Ireland to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Northern Ireland and Chicago flights

Browse other Northern Ireland and Chicago flight options. Last updated on 11 September 2026.

Popular flight searches

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

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

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

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

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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 11 September 2026.

Best flights from Northern Ireland to Chicago
Discover carefully curated flight deals from Northern Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Northern Ireland to Chicago
Discover last-minute flight deals from Northern Ireland to Chicago. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Northern Ireland to Chicago
Search for one-way flight options from Northern Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.