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Northern Ireland

$437+ Cheap flights from Illinois to Northern Ireland

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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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Cheap flight deals from Illinois to Northern Ireland

Keep the following information in mind while searching for Illinois to Northern Ireland flight deals. Data was last updated febrero 20, 2025.

Round-trip from

$604
(oojo)

One-way from

$437
(Kiwi.com)

Popular in

May

Cheapest in

December
From Illinois to Northern Ireland
Search Deals
One-way flight from Illinois to Northern Ireland
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($281 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($55 potential savings vs. average RT price).
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Find flight deals from Illinois to Northern Ireland

Cheapest flights from Illinois to Northern Ireland
Explore the most affordable flight options available from Illinois to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This oojo deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/19:15 pmORD - BHD
1 stop12h 05mBritish Airways
mar. 4/86:35 amBHD - ORD
1 stop14h 10mBritish Airways
Deal found 2/18$604
This American Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/17:10 pmORD - BHD
1 stop14h 10mAmerican Airlines
mar. 4/86:35 amBHD - ORD
2 stops17h 04mAmerican Airlines
Deal found 2/18$635
This Trip.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/17:30 pmORD - BFS
2 stops14h 40mMultiple Airlines
mar. 4/87:45 amBFS - ORD
2 stops16h 35mMultiple Airlines
Deal found 2/20$650
This KLM deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/66:15 pmORD - BHD
2 stops16h 40mKLM
dom. 4/135:25 pmBHD - ORD
1 stop26h 45mKLM
Deal found 2/20$673
This Netflights deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/11:35 pmORD - BHD
2 stops21h 20mVirgin Atlantic
mar. 4/86:30 amBHD - ORD
2 stops16h 52mVirgin Atlantic
Deal found 2/18$676
This Finnair deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/25:50 pmORD - BHD
1 stop10h 45mFinnair
mar. 9/94:25 pmBHD - ORD
1 stop25h 30mFinnair
Deal found 2/18$701
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/176:24 pmSTL - BHD
2 stops13h 06mBritish Airways
mié. 10/110:00 amBHD - STL
2 stops15h 54mBritish Airways
Deal found 2/20$716
This Travelocity deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/244:45 pmORD - BHD
2 stops20h 00mIberia
lun. 4/289:50 amBHD - ORD
2 stops18h 57mIberia
Deal found 2/18$847
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/55:55 amORD - BHD
3 stops25h 50mMultiple Airlines
sáb. 4/127:00 amBHD - ORD
2 stops37h 05mMultiple Airlines
Deal found 2/19$898
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/53:45 pmSTL - BFS
3 stops25h 05mMultiple Airlines
sáb. 3/88:10 amBFS - STL
3 stops35h 33mMultiple Airlines
Deal found 2/20$1,202
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/2212:55 pmMDW - BFS
3 stops16h 40mMultiple Airlines
vie. 3/285:05 pmBFS - MDW
3 stops46h 15mMultiple Airlines
Deal found 2/19$1,302
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/66:42 pmMDW - BHD
2 stops16h 13mDelta
dom. 4/136:30 amBHD - MDW
2 stops17h 48mDelta
Deal found 2/20$1,336

Find flights from Illinois to Northern Ireland within your budget

Customize your flight search to find flights from Illinois to Northern Ireland 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 2,558,603 searches. Data last updated febrero 20, 2025.

Fly from

Illinois

Fly to

Northern Ireland

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 4/1

9:15 pm-3:20 pm

1 stop12h 05m

Belfast City

mar. 4/8

6:35 am-2:45 pm

1 stop14h 10m

$604

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 4/1

7:10 pm-3:20 pm

1 stop14h 10m

Belfast City

mar. 4/8

6:35 am-5:39 pm

2 stops17h 04m

$635

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mar. 4/1

7:30 pm-4:10 pm

2 stops14h 40m

Belfast Intl

mar. 4/8

7:45 am-6:20 pm

2 stops16h 35m

$650

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

dom. 4/6

6:15 pm-4:55 pm

2 stops16h 40m

Belfast City

dom. 4/13

5:25 pm-2:10 pm

1 stop26h 45m

$673

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 4/1

1:35 pm-4:55 pm

2 stops21h 20m

Belfast City

mar. 4/8

6:30 am-5:22 pm

2 stops16h 52m

$676

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

lun. 3/17

6:29 pm-4:15 pm

2 stops16h 46m

Belfast City

vie. 3/21

8:40 am-8:41 pm

2 stops17h 01m

$782

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

jue. 4/24

4:45 pm-6:45 pm

2 stops20h 00m

Belfast City

lun. 4/28

9:50 am-10:47 pm

2 stops18h 57m

$847

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

sáb. 4/5

5:55 am-1:45 pm

3 stops25h 50m

Belfast City

sáb. 4/12

7:00 am-2:05 pm

2 stops37h 05m

$898

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

mié. 3/5

3:45 pm-10:50 pm

3 stops25h 05m

Belfast Intl

sáb. 3/8

8:10 am-1:43 pm

3 stops35h 33m

$1,202

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

sáb. 3/22

12:55 pm-10:35 am

3 stops16h 40m

Belfast Intl

vie. 3/28

5:05 pm-10:20 am

3 stops46h 15m

$1,302

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 20 results
1
2

Best time to book a flight from Illinois to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Illinois with our price prediction graph.
Estimated round-trip 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 Illinois to Northern Ireland

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

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

Find hourly flight availability from Illinois to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

When flying from Illinois to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Northern Ireland by month

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

In terms of precipitation, rainfall in Northern Ireland ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Northern Ireland when rainfall is around 2.0 in.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. 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 Northern Ireland. Reviews last updated febrero 20, 2025.
Delta
8.0
Very good
8,219 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,219 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,219 reviews

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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

Find useful and relevant information for your journey from Illinois to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Northern Ireland?

    Currently, February is the cheapest month in which you can book a flight from Illinois to Northern Ireland (average of $657). Flying from Illinois to Northern Ireland in June is currently the most expensive (average of $1,189). 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 Illinois to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Illinois to Northern Ireland

Discover the top 2 airlines that operate flights from Illinois to Northern Ireland. 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 2,558,603 searches. Data last updated febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$612Average$782FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$658Average$782FlexibilityNo cancel feeOn-time71%
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