Find flights
When to book

Cheap flights from Chicago O'Hare Intl Airport to Belfast Intl Airport from £266

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
23 Apr — 30 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from O'Hare Intl to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to Belfast Intl
Explore the most affordable flight options available from O'Hare Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 March 2026.

Sun 1/1119:40
ORD
-
BFS
2 stops17h 15m
Multiple Airlines
Wed 4/1118:25
BFS
-
ORD
3 stops28h 55m
Multiple Airlines
Deal found 21/3£627
Mon 2/1118:30
ORD
-
BFS
3 stops21h 00m
Multiple Airlines
Mon 9/1119:55
BFS
-
ORD
3 stops27h 25m
Multiple Airlines
Deal found 22/3£697
Fri 8/515:45
ORD
-
BFS
2 stops23h 15m
Multiple Airlines
Fri 15/507:05
BFS
-
ORD
2 stops18h 10m
Multiple Airlines
Deal found 23/3£737
Sat 6/609:55
ORD
-
BFS
2 stops17h 00m
Multiple Airlines
Sat 20/615:35
BFS
-
ORD
2 stops26h 15m
Multiple Airlines
Deal found 24/3£746
Fri 24/708:45
ORD
-
BFS
3 stops30h 30m
Multiple Airlines
Sun 2/819:35
BFS
-
ORD
3 stops44h 05m
Multiple Airlines
Deal found 22/3£809
Sun 2/821:40
ORD
-
BFS
2 stops30h 20m
Multiple Airlines
Mon 31/805:50
BFS
-
ORD
1 stop15h 20m
Multiple Airlines
Deal found 21/3£828

Find flight deals from O'Hare Intl to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Belfast Intl (BFS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 24 March 2026.

Round-trip from

£737

One-way from

£266
8/5-15/5
  • 8/5-15/5
  • 4 total stops
  • 41h 25m total
  • Chicago to Belfast
Search Deals
14/9
  • 14/9
  • 2 total stops
  • 35h 35m total
  • Chicago to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from O'Hare Intl to Belfast 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 24 March 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 8/5

15:45-21:00

2 stops23h 15m

Belfast Intl

Fri 15/5

07:05-19:15

2 stops18h 10m

£737

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 6/6

09:55-08:55

2 stops17h 00m

Belfast Intl

Sat 20/6

15:35-11:50

2 stops26h 15m

£746

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 2/8

21:40-10:00

2 stops30h 20m

Belfast Intl

Mon 31/8

05:50-15:10

1 stop15h 20m

£828

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 24/7

17:35-21:50

2 stops22h 15m

Belfast Intl

Sun 2/8

19:35-09:40

3 stops44h 05m

£889

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 28/7

17:10-07:50

1 stop32h 40m

Belfast Intl

Sun 9/8

16:30-14:25

2 stops27h 55m

£1,135

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 24/7

15:35-21:00

2 stops23h 25m

Belfast Intl

Fri 7/8

17:30-15:10

1 stop27h 40m

£1,204
Cheapest one-way

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 14/9

21:40-15:15

2 stops35h 35m

£266
Fastest single journey

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 28/6

15:45-21:30

2 stops23h 45m

£326

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 7/6

22:25-23:05

3 stops42h 40m

£330

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Sorted by cheapest first

Best time to book a flight from O'Hare Intl to Belfast Intl

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

Related info for your journey

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

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

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

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

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

    Yes. Cheapflights offers flight deals from O'Hare Intl to Belfast 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.

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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 O'Hare Intl to Belfast Intl?

Cheapflights makes it easy to find O'Hare Intl to Belfast Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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 Belfast Intl from O'Hare Intl.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl to Belfast Intl flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from O'Hare Intl to Belfast Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price 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.