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Northern Ireland

$345+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
abr. 7 — abr. 141
lun. 4/7
lun. 4/14
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 abril 2, 2025.

Round-trip from

$621
(Finnair)

One-way from

$345
(Kiwi.com)

Popular in

May

Cheapest in

December

Average price

$872
From Illinois to Northern Ireland
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One-way flight from Illinois to Northern Ireland
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Highest demand for flights based on searches. 22% potential increase in price ($249 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 abril 2, 2025.

This Finnair deal was found by Cheapflights users on 4/1. 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. 9/235:45 pmORD - BHD
1 stop10h 50mMultiple Airlines
mar. 10/76:35 amBHD - ORD
1 stop14h 15mMultiple Airlines
Deal found 4/1$621
This StudentUniverse deal was found by Cheapflights users on 4/1. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/235:45 pmORD - BHD
1 stop10h 50mFinnair
mar. 10/74:25 pmBHD - ORD
2 stops33h 09mFinnair
Deal found 4/1$633
This oojo deal was found by Cheapflights users on 4/1. 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. 9/2312:46 pmORD - BHD
2 stops15h 49mBritish Airways
mar. 10/79:35 amBHD - ORD
2 stops16h 00mBritish Airways
Deal found 4/1$641
This American Airlines deal was found by Cheapflights users on 4/1. 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. 9/235:45 pmORD - BHD
1 stop10h 50mAmerican Airlines
mar. 10/79:35 amBHD - ORD
2 stops16h 00mAmerican Airlines
Deal found 4/1$667
This Mytrip deal was found by Cheapflights users on 4/1. 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.
mar. 5/139:55 amORD - BFS
2 stops28h 40mMultiple Airlines
mar. 5/206:15 amBFS - ORD
3 stops46h 24mMultiple Airlines
Deal found 4/1$694
This Delta deal was found by Cheapflights users on 4/1. 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.
vie. 5/165:15 pmORD - BHD
2 stops22h 00mDelta
vie. 5/236:30 amBHD - ORD
2 stops19h 51mDelta
Deal found 4/1$972
This Delta deal was found by Cheapflights users on 4/1. 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.
vie. 5/166:38 pmMDW - BHD
2 stops20h 37mDelta
vie. 5/236:30 amBHD - MDW
2 stops18h 15mDelta
Deal found 4/1$972
This Gurufare deal was found by Cheapflights users on 4/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/147:23 amSTL - BHD
2 stops23h 32mBritish Airways
lun. 7/217:30 pmBHD - STL
2 stops29h 38mBritish Airways
Deal found 4/1$1,040
This KAYAK deal was found by Cheapflights users on 4/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/1512:27 pmSTL - BHD
2 stops16h 08mMultiple Airlines
lun. 7/219:50 amBHD - STL
3 stops19h 59mMultiple Airlines
Deal found 4/1$2,106
This Cheapflightsfares deal was found by Cheapflights users on 4/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/119:15 pmORD - BHD
1 stop12h 15mIberia
vie. 4/186:35 amBHD - ORD
1 stop17h 40mIberia
Deal found 4/2$3,405

Cheapflights Fare Finder

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 abril 2, 2025.
Use the filters below to find and compare flights from Illinois to Northern Ireland that are best for you.

Fly from

Illinois

Fly to

Northern Ireland

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 9/23

5:45 pm-10:35 am

1 stop10h 50m

Belfast City

mar. 10/7

6:35 am-2:50 pm

1 stop14h 15m

$621

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 9/23

5:45 pm-10:35 am

1 stop10h 50m

Belfast City

mar. 10/7

4:25 pm-7:34 pm

2 stops33h 09m

$633

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 9/23

12:46 pm-10:35 am

2 stops15h 49m

Belfast City

mar. 10/7

9:35 am-7:35 pm

2 stops16h 00m

$641

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mar. 9/23

5:45 pm-10:35 am

1 stop10h 50m

Belfast City

mar. 10/7

9:35 am-7:35 pm

2 stops16h 00m

$667

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mar. 5/13

9:55 am-8:35 pm

2 stops28h 40m

Belfast Intl

mar. 5/20

6:15 am-10:39 pm

3 stops46h 24m

$694

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

vie. 5/16

5:15 pm-9:15 pm

2 stops22h 00m

Belfast City

vie. 5/23

6:30 am-8:21 pm

2 stops19h 51m

$972

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

vie. 5/16

6:38 pm-9:15 pm

2 stops20h 37m

Belfast City

vie. 5/23

6:30 am-6:45 pm

2 stops18h 15m

$972

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

mar. 7/15

4:52 pm-3:20 pm

2 stops16h 28m

Belfast City

lun. 7/21

7:30 pm-7:08 pm

2 stops29h 38m

$1,015

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

lun. 7/14

8:01 pm-5:30 pm

2 stops15h 29m

Belfast City

lun. 7/21

9:50 am-11:49 pm

3 stops19h 59m

$2,106

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

jue. 6/5

6:17 pm-11:00 am

3 stops58h 43m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 15 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.

Cheapflights Insights

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

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 abril 2, 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 abril 2, 2025.
To help decide which airline to fly from Illinois to Northern Ireland, see what other customers have to say about Delta, Finnair and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

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
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

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
1,267 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

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
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

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.
British Airways
6.6
Okay
6,715 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

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.

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

    One-way options have recently been found by users for as low as $456 on British Airways. Other airlines that offer cheap prices include Delta from $498 and American Airlines from $699 one-way.

  • 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 airline flying from Illinois to Northern Ireland

Discover the top airline 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 abril 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$622Average$724FlexibilityNo cancel feeOn-time70%

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