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Cheap flights from Northern Ireland to Chicago O'Hare Intl Airport from £371

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
3 Apr — 10 Apr1
1 adult

Cheap flight deals from Northern Ireland to O'Hare Intl

Keep the following information in mind while searching for Northern Ireland to O'Hare Intl flight deals. Data was last updated 29 March 2025.

Round-trip from

£484

One-way from

£371

Popular in

March

Cheapest in

September

Average price

£1,232
British Airways
  • British Airways
  • 1/5-5/5
  • 2 total stops
  • 29h 20m total
  • Northern Ireland to Chicago
20/4
  • 20/4
  • 3 total stops
  • 53h 45m total
  • Northern Ireland to Chicago
Highest demand for flights based on searches. 26% potential increase in price (£204 potential increase over avg. return price).
Cheapest flight prices on average. 8% potential price decrease (£43 potential savings vs. average return price).
Average for round-trip flights in March 2025

Find flight deals from Northern Ireland to O'Hare Intl

Cheapest flights from Northern Ireland to O'Hare Intl
Explore the most affordable flight options available from Northern Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2025.

Thu 1/506:35BHD - ORD
1 stop14h 10mBritish Airways
Mon 5/522:25ORD - BHD
1 stop15h 10mBritish Airways
Deal found 27/3£484
Thu 1/509:35BHD - ORD
1 stop13h 25mAmerican Airlines
Mon 5/517:40ORD - BHD
2 stops16h 00mAmerican Airlines
Deal found 27/3£525
Thu 1/506:30BHD - ORD
2 stops15h 38mDelta
Mon 5/511:15ORD - BHD
2 stops23h 40mDelta
Deal found 27/3£565
Thu 1/521:55BFS - ORD
1 stop22h 10mMultiple Airlines
Mon 5/518:35ORD - BFS
1 stop21h 55mMultiple Airlines
Deal found 27/3£635
Thu 1/507:05BHD - ORD
2 stops30h 59mMultiple Airlines
Mon 5/508:45ORD - BHD
3 stops29h 40mMultiple Airlines
Deal found 27/3£682

Cheapflights Fare Finder

Customise your flight search to find flights from Northern Ireland to O'Hare Intl 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 29 March 2025.
Use the filters below to find and compare flights from Northern Ireland to Chicago O'Hare Intl Airport that are best for you.

Fly from

Northern Ireland

Fly to

O'Hare Intl

Route

Depart

Return

Price

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 1/5

06:35-14:45

1 stop14h 10m

Chicago O'Hare Intl

Mon 5/5

22:25-19:35

1 stop15h 10m

£484

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 1/5

09:35-17:00

1 stop13h 25m

Chicago O'Hare Intl

Mon 5/5

17:40-15:40

2 stops16h 00m

£525

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 1/5

06:30-16:08

2 stops15h 38m

Chicago O'Hare Intl

Mon 5/5

11:15-16:55

2 stops23h 40m

£565

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 1/5

21:55-14:05

1 stop22h 10m

Chicago O'Hare Intl

Mon 5/5

18:35-22:30

1 stop21h 55m

£635

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 1/5

07:05-08:04

2 stops30h 59m

Chicago O'Hare Intl

Mon 5/5

08:45-20:25

3 stops29h 40m

£682

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 20/4

08:50-08:35

3 stops53h 45m

£371

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 20/4

14:25-08:35

3 stops48h 10m

£406

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 16/5

06:45-19:00

2 stops18h 15m

£764

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 16/5

06:30-14:10

1 stop13h 40m

£1,272

Flights are sorted by cheapest return flights first.

Deals found on 27/3

Best time to book a flight from Northern Ireland to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport 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 O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, 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).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 29 March 2025.

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to O'Hare Intl. 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 Northern Ireland to O'Hare Intl that include hotel bookings?

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

  • How can I find direct flights from Northern Ireland to O'Hare Intl?

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

  • Can I find deals for business class flights from Northern Ireland to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Northern Ireland to O'Hare Intl 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 Northern Ireland to Chicago O'Hare Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Chicago O'Hare Intl Airport (average of £595). Flying from Northern Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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

Travelling to a place near Northern Ireland?

Book flights to Northern Ireland if you plan to visit one of these locations
Evanston
Downers Grove
Schaumburg
Elk Grove Village
Beloit
Rosemont

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Can Cheapflights find flights from Northern Ireland to O'Hare Intl with no change fees?

Need flexible booking options for your flight to O'Hare Intl from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Northern Ireland to O'Hare Intl become cheaper?

Yes, Cheapflights offers price alerts on Northern Ireland to O'Hare Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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