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

The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £300. However, be on the lookout for offers from Delta and Finnair, as they are both options that can get you from Chicago to Northern Ireland for a low price.

What is the cheapest month to book a flight from Chicago to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from Chicago to Northern Ireland (average of £67). Flying from Chicago to Northern Ireland in July is currently the most expensive (average of £90). 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.

What are the most popular routes from Chicago to Northern Ireland?

The most popular flight routes from Chicago to Northern Ireland are Chicago O'Hare Intl - Belfast Intl, Chicago O'Hare Intl - Belfast City and Chicago Midway - Belfast Intl.

What is the cheapest month to fly from Chicago to Northern Ireland?

The best pricing can be found in the month of September. Prices to Northern Ireland from Chicago average £700. You can even find prices in September for less than £700, as users have found deals to Northern Ireland from as low as £429. The month of May appears to be one of the more expensive times to travel to Northern Ireland from Chicago. Flying in the targeted month can save you up to 50%.

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

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

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

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

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

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

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

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

£300+ Flights from Chicago to Northern Ireland

Cheap flight deals from Chicago to Northern Ireland

Round-trip from	£475
One-way from	£300
Popular in	May
Cheapest in	September
Average price	£1,000

American Airlines
21/8-4/9
2 total stops
27h 35m total
Chicago to Northern Ireland

Search Deals

British Airways
20/8
2 total stops
19h 25m total
Chicago to Northern Ireland

Search Deals

Highest demand for flights based on searches. 26% potential increase in price (£188 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£30 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Chicago to Northern Ireland

Cheapest flights from Chicago to Northern Ireland
Explore the most affordable flight options available from Chicago to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Mon 5/517:40ORD - BHD

1 stop13h 15mAmerican Airlines

Tue 13/506:35BHD - ORD

1 stop14h 05mAmerican Airlines

Deal found 29/4£444

Thu 21/821:15ORD - BHD

1 stop12h 15mBritish Airways

Thu 4/909:35BHD - ORD

1 stop12h 20mBritish Airways

Deal found 29/4£534

Tue 6/518:15ORD - BHD

2 stops20h 50mKLM

Tue 13/506:30BHD - ORD

2 stops18h 07mKLM

Deal found 29/4£538

Tue 6/517:05ORD - BHD

2 stops22h 00mDelta

Tue 13/506:30BHD - ORD

2 stops16h 59mDelta

Deal found 29/4£541

Sat 14/610:00ORD - BFS

3 stops19h 00mMultiple Airlines

Mon 16/606:10BFS - ORD

2 stops21h 46mMultiple Airlines

Deal found 30/4£598

Wed 30/415:45ORD - BHD

2 stops14h 55mAer Lingus

Sat 10/509:50BHD - ORD

2 stops15h 10mAer Lingus

Deal found 30/4£713

Sat 14/610:00ORD - BHD

3 stops29h 10mMultiple Airlines

Sat 21/606:55BHD - ORD

3 stops32h 14mMultiple Airlines

Deal found 30/4£728

Thu 12/610:26MDW - BFS

2 stops23h 19mMultiple Airlines

Thu 19/608:10BFS - MDW

2 stops19h 35mMultiple Airlines

Deal found 29/4£752

Wed 13/813:00MDW - BHD

2 stops21h 55mDelta

Sun 24/806:30BHD - MDW

2 stops17h 33mDelta

Deal found 29/4£773

Sat 14/609:40MDW - BHD

3 stops22h 05mMultiple Airlines

Sat 21/607:00BHD - MDW

3 stops31h 45mMultiple Airlines

Deal found 30/4£897

Sat 14/619:21MDW - BHD

2 stops15h 34mKLM

Sat 21/606:30BHD - MDW

2 stops18h 11mKLM

Deal found 30/4£1,750

Sun 18/516:55ORD - BHD

1 stop12h 35mIberia

Wed 6/806:50BHD - ORD

1 stop17h 25mIberia

Deal found 29/4£2,064

Best flights from Chicago to Northern Ireland
Discover carefully curated flight deals from Chicago to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Thu 21/817:00ORD - BHD

1 stop14h 15mAmerican Airlines

Thu 4/906:35BHD - ORD

1 stop13h 20mAmerican Airlines

Deal found 30/4£475

Thu 21/821:15ORD - BHD

1 stop12h 15mBritish Airways

Thu 4/909:35BHD - ORD

1 stop12h 20mBritish Airways

Deal found 29/4£534

Sat 14/610:00ORD - BFS

3 stops19h 00mMultiple Airlines

Mon 16/606:10BFS - ORD

2 stops21h 46mMultiple Airlines

Deal found 30/4£598

Wed 13/813:00MDW - BHD

2 stops21h 55mDelta

Sun 24/806:30BHD - MDW

2 stops17h 33mDelta

Deal found 29/4£773

Sun 22/621:15ORD - BHD

2 stops14h 30mAer Lingus

Sat 5/707:00BHD - ORD

2 stops18h 00mAer Lingus

Deal found 29/4£874

Sat 14/617:39ORD - BHD

2 stops17h 16mKLM

Sat 21/606:30BHD - ORD

2 stops17h 16mKLM

Deal found 30/4£960

Sat 14/610:00ORD - BHD

3 stops29h 10mMultiple Airlines

Sat 21/606:55BHD - ORD

3 stops32h 14mMultiple Airlines

Deal found 30/4£728

Thu 12/610:26MDW - BFS

2 stops23h 19mMultiple Airlines

Thu 19/608:10BFS - MDW

2 stops19h 35mMultiple Airlines

Deal found 29/4£752

Sun 18/516:55ORD - BHD

1 stop12h 35mIberia

Tue 5/806:35BHD - ORD

1 stop14h 15mIberia

Deal found 29/4£2,064

Sat 14/609:40MDW - BHD

3 stops22h 05mMultiple Airlines

Sat 21/607:00BHD - MDW

3 stops31h 45mMultiple Airlines

Deal found 30/4£897

Sat 14/619:21MDW - BHD

2 stops15h 34mKLM

Sat 21/606:30BHD - MDW

2 stops18h 11mKLM

Deal found 30/4£1,750

Last-minute flights from Chicago to Northern Ireland
Discover last-minute flight deals from Chicago to Northern Ireland. Data last updated 30 April 2025 and is based on user searches.

Wed 30/422:20ORD - BHD

1 stop28h 25mBritish Airways

Sat 10/519:00BHD - ORD

1 stop28h 00mBritish Airways

Deal found 30/4£553

Wed 30/415:45ORD - BHD

2 stops14h 55mAer Lingus

Sat 10/509:50BHD - ORD

2 stops15h 10mAer Lingus

Deal found 30/4£713

Mon 5/517:40ORD - BHD

1 stop13h 15mAmerican Airlines

Tue 13/506:35BHD - ORD

1 stop14h 05mAmerican Airlines

Deal found 29/4£444

Tue 6/518:15ORD - BHD

2 stops20h 50mKLM

Tue 13/506:30BHD - ORD

2 stops18h 07mKLM

Deal found 29/4£538

Tue 6/517:05ORD - BHD

2 stops22h 00mDelta

Tue 13/506:30BHD - ORD

2 stops16h 59mDelta

Deal found 29/4£541

Sat 17/517:40ORD - BHD

1 stop10h 30mFinnair

Fri 23/520:05BHD - ORD

1 stop21h 40mFinnair

Deal found 28/4£4,534

Sun 18/516:55ORD - BHD

1 stop12h 35mIberia

Tue 5/806:35BHD - ORD

1 stop14h 15mIberia

Deal found 29/4£2,064

Tue 20/521:15ORD - BHD

1 stop14h 15mMultiple Airlines

Tue 5/806:35BHD - ORD

1 stop14h 15mMultiple Airlines

Deal found 28/4£1,726

One-way flights from Chicago to Northern Ireland
Search for one-way flight options from Chicago to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Wed 20/814:10ORD - BHD

2 stops19h 25mBritish Airways

Deal found 30/4£300

Wed 20/813:00MDW - BHD

2 stops21h 55mDelta

Deal found 29/4£323

Fri 23/517:30ORD - BHD

3 stops39h 05mMultiple Airlines

Deal found 28/4£1,042

Tue 20/517:40ORD - BHD

1 stop10h 55mFinnair

Deal found 28/4£2,878

Fri 23/519:15ORD - BHD

1 stop14h 15mAmerican Airlines

Deal found 28/4£3,718

Sun 18/516:20ORD - BHD

1 stop18h 35mKLM

Deal found 28/4£3,729

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 21/8

17:00-13:15

1 stop14h 15m

Belfast City

Thu 4/9

06:35-13:55

1 stop13h 20m

£475

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 21/8

21:15-15:30

1 stop12h 15m

Belfast City

Thu 4/9

09:35-15:55

1 stop12h 20m

£534

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 14/6

10:00-11:00

3 stops19h 00m

Belfast Intl

Mon 16/6

06:10-21:56

2 stops21h 46m

£598

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 14/6

10:00-21:10

3 stops29h 10m

Belfast City

Sat 21/6

06:55-09:09

3 stops32h 14m

£728

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

Thu 12/6

10:26-15:45

2 stops23h 19m

Belfast Intl

Thu 19/6

08:10-21:45

2 stops19h 35m

£752

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 13/8

13:00-16:55

2 stops21h 55m

Belfast City

Sun 24/8

06:30-18:03

2 stops17h 33m

£773

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 22/6

21:15-17:45

2 stops14h 30m

Belfast City

Sat 5/7

07:00-19:00

2 stops18h 00m

£874

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 14/6

09:40-13:45

3 stops22h 05m

Belfast City

Sat 21/6

07:00-08:45

3 stops31h 45m

£897

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 14/6

17:39-16:55

2 stops17h 16m

Belfast City

Sat 21/6

06:30-17:46

2 stops17h 16m

£960

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 14/6

19:21-16:55

2 stops15h 34m

Belfast City

Sat 21/6

06:30-18:41

2 stops18h 11m

£1,750

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 17 results

Best time to book a flight from Chicago to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Chicago 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 Chicago to Northern Ireland

Rainfall in Northern Ireland by month

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

If weather is an important factor for your trip to Northern Ireland, 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 16.0 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 Northern Ireland

To help decide which airline to fly from Chicago to Northern Ireland, see what other customers have to say about Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,936 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus

7.0

Good

1,076 reviews

Delta

8.0

Very Good

7,936 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Chicago to Northern Ireland one-way?
The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £300. However, be on the lookout for offers from Delta and Finnair, as they are both options that can get you from Chicago to Northern Ireland for a low price.
What are the most popular routes from Chicago to Northern Ireland?
The most popular flight routes from Chicago to Northern Ireland are Chicago O'Hare Intl - Belfast Intl, Chicago O'Hare Intl - Belfast City and Chicago Midway - Belfast Intl.
Can I find deals for flights from Chicago to Northern Ireland that include hotel bookings?
Yes. In addition to deals on Chicago to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Chicago to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Northern Ireland.
Can I find deals for business class flights from Chicago to Northern Ireland?
Yes. Cheapflights offers flight deals from Chicago to Northern Ireland 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 Chicago to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from Chicago to Northern Ireland (average of £67). Flying from Chicago to Northern Ireland in July is currently the most expensive (average of £90). 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

Alternative routes for Chicago to Northern Ireland

Direct flights to United Kingdom

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Chicago to Northern Ireland. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Northern Ireland from Chicago.

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

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

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

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

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Cheap flights from Chicago to Northern Ireland from £300

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Chicago to Northern Ireland

Keep the following information in mind while searching for Chicago to Northern Ireland flight deals. Data was last updated 30 April 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Chicago to Northern Ireland

Cheapest flights from Chicago to Northern IrelandExplore the most affordable flight options available from Chicago to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Explore the most affordable flight options available from Chicago to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Chicago to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Chicago with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Northern Ireland

Rainfall in Northern Ireland by month

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

Temperature in Northern Ireland by month

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

Reviews of airlines servicing Northern Ireland

To help decide which airline to fly from Chicago to Northern Ireland, see what other customers have to say about Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the most popular routes from Chicago to Northern Ireland?

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

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

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

What is the cheapest month to book a flight from Chicago to Northern Ireland?

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 Chicago to Northern Ireland

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Chicago to Northern Ireland
Explore the most affordable flight options available from Chicago to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.