Find flights
When to book
FAQs

Cheap flights from Northern Ireland to Chicago O'Hare Intl Airport from £316

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 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
25 Aug — 1 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to O'Hare Intl

Enter your travel dates to find the best prices.

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 26 July 2026.

Mon 21/909:10
BFS
-
ORD
2 stops34h 50m
Multiple Airlines
Wed 30/919:25
ORD
-
BFS
2 stops20h 55m
Multiple Airlines
Deal found 24/7£596
Fri 25/921:05
BFS
-
ORD
3 stops29h 07m
Multiple Airlines
Tue 29/919:25
ORD
-
BFS
2 stops18h 15m
Multiple Airlines
Deal found 22/7£620
Mon 7/921:35
BFS
-
ORD
3 stops28h 37m
Multiple Airlines
Mon 14/919:25
ORD
-
BFS
2 stops14h 50m
Multiple Airlines
Deal found 23/7£632
Mon 21/911:35
BHD
-
ORD
1 stop12h 40m
British Airways
Wed 30/917:00
ORD
-
BHD
1 stop14h 35m
British Airways
Deal found 24/7£689
Mon 21/911:05
BHD
-
ORD
2 stops14h 10m
Multiple Airlines
Wed 30/915:45
ORD
-
BHD
2 stops17h 45m
Multiple Airlines
Deal found 24/7£692
Fri 25/906:30
BHD
-
ORD
1 stop15h 25m
British Airways
Tue 29/919:05
ORD
-
BHD
1 stop14h 15m
British Airways
Deal found 22/7£711
Fri 25/909:50
BHD
-
ORD
2 stops18h 42m
KLM
Tue 29/912:29
ORD
-
BHD
2 stops14h 51m
KLM
Deal found 22/7£739
Sun 23/806:50
BHD
-
ORD
2 stops18h 25m
Aer Lingus
Sun 30/815:45
ORD
-
BHD
2 stops15h 25m
Aer Lingus
Deal found 24/7£782
Sun 23/807:00
BHD
-
ORD
3 stops21h 05m
Multiple Airlines
Sun 30/819:25
ORD
-
BHD
2 stops19h 40m
Multiple Airlines
Deal found 24/7£984
Sun 23/817:30
BHD
-
ORD
1 stop27h 00m
Virgin Atlantic
Sun 30/810:30
ORD
-
BHD
2 stops16h 50m
Virgin Atlantic
Deal found 24/7£990
Sun 23/817:30
BHD
-
ORD
1 stop27h 00m
KLM
Sun 30/816:20
ORD
-
BHD
1 stop11h 00m
KLM
Deal found 24/7£992

Find 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 26 July 2026.

Round-trip from

£596

One-way from

£316
21/9-30/9
  • 21/9-30/9
  • 4 total stops
  • 55h 45m total
  • Northern Ireland to Chicago
Search Deals
25/11
  • 25/11
  • 3 total stops
  • 39h 25m total
  • Northern Ireland to Chicago
Search Deals

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 26 July 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 25/9

21:05-20:12

3 stops29h 07m

Chicago O'Hare Intl

Tue 29/9

19:25-19:40

2 stops18h 15m

£620

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/9

21:25-19:48

3 stops28h 23m

Chicago O'Hare Intl

Mon 14/9

19:25-20:40

2 stops19h 15m

£635

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 21/9

17:15-18:15

3 stops31h 00m

Chicago O'Hare Intl

Wed 30/9

19:25-22:20

2 stops20h 55m

£685

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 21/9

09:40-21:12

2 stops17h 32m

Chicago O'Hare Intl

Wed 30/9

16:01-13:35

2 stops15h 34m

£694

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 25/9

06:30-15:55

1 stop15h 25m

Chicago O'Hare Intl

Tue 29/9

19:05-15:20

1 stop14h 15m

£711

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 25/9

09:50-22:32

2 stops18h 42m

Chicago O'Hare Intl

Tue 29/9

12:29-09:20

2 stops14h 51m

£739

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 23/8

06:45-19:52

3 stops43h 07m

Chicago O'Hare Intl

Sun 30/8

22:25-21:00

2 stops16h 35m

£755

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sun 23/8

06:50-19:15

2 stops18h 25m

Chicago O'Hare Intl

Sun 30/8

15:45-13:10

2 stops15h 25m

£782
Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 15/1

11:30-18:45

1 stop13h 15m

Chicago O'Hare Intl

Sun 17/1

13:31-10:20

2 stops14h 49m

£784
Cheapest one-way

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 25/11

07:55-17:20

3 stops39h 25m

£316

Flights are sorted by cheapest return flights first.

Deals found on 23/7

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
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

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

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.

  • How long is the flight from Northern Ireland to Chicago O'Hare Intl Airport?

    For as low as £694, British Airways can have you in Chicago O'Hare Intl Airport from Northern Ireland in 17h 32m. There are 3644 mi between Northern Ireland and Chicago O'Hare Intl Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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.

See more FAQs

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Elk Grove Village

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.

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 Northern Ireland to O'Hare Intl?

When you search for this flight from Northern Ireland to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to O'Hare Intl?

Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.