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Cheap flights from Chicago to Belfast from £240

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
28 Jun — 5 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chicago to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from Chicago to Belfast
Explore the most affordable flight options available from Chicago to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 May 2026.

Wed 11/1117:10
ORD
-
BHD
1 stop11h 05m
British Airways
Wed 18/1106:35
BHD
-
ORD
1 stop18h 10m
British Airways
Deal found 29/5£646
Tue 1/912:40
ORD
-
BHD
2 stops16h 05m
British Airways
Wed 9/911:35
BHD
-
ORD
1 stop12h 40m
British Airways
Deal found 26/5£658
Sun 13/917:00
ORD
-
BHD
1 stop11h 30m
British Airways
Wed 16/920:35
BHD
-
ORD
1 stop23h 15m
British Airways
Deal found 28/5£659
Sun 6/921:15
ORD
-
BHD
1 stop11h 20m
British Airways
Mon 14/918:30
BHD
-
ORD
1 stop27h 25m
British Airways
Deal found 27/5£660
Wed 11/1115:08
ORD
-
BHD
2 stops13h 07m
American Airlines
Wed 18/1106:35
BHD
-
ORD
1 stop13h 15m
American Airlines
Deal found 29/5£660
Sun 5/709:50
ORD
-
BFS
2 stops26h 35m
Multiple Airlines
Tue 21/722:45
BFS
-
ORD
2 stops27h 07m
Multiple Airlines
Deal found 27/5£666
Fri 4/914:15
ORD
-
BFS
2 stops25h 35m
Multiple Airlines
Sat 12/909:30
BFS
-
ORD
3 stops36h 30m
Multiple Airlines
Deal found 29/5£672
Tue 1/916:20
ORD
-
BHD
1 stop11h 00m
Delta
Wed 9/917:30
BHD
-
ORD
1 stop26h 45m
Delta
Deal found 27/5£674
Tue 1/917:20
ORD
-
BHD
2 stops17h 35m
Delta
Mon 14/917:30
BHD
-
ORD
1 stop26h 45m
Delta
Deal found 27/5£677
Sun 19/709:50
ORD
-
BFS
2 stops26h 35m
Multiple Airlines
Mon 3/806:30
BFS
-
ORD
2 stops21h 35m
Multiple Airlines
Deal found 24/5£678
Wed 2/919:05
ORD
-
BHD
1 stop12h 30m
British Airways
Thu 10/909:35
BHD
-
ORD
1 stop12h 20m
British Airways
Deal found 27/5£680
Tue 1/916:20
ORD
-
BHD
1 stop11h 00m
Delta
Fri 11/909:50
BHD
-
ORD
2 stops16h 34m
Delta
Deal found 27/5£681

Find flight deals from Chicago to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Belfast (BF1). 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 29 May 2026.

Round-trip from

£646

One-way from

£240
British Airways
  • British Airways
  • 11/11-18/11
  • 2 total stops
  • 29h 15m total
  • Chicago to Belfast
Search Deals
British Airways
  • British Airways
  • 8/9
  • 1 total stop
  • 14h 15m total
  • Chicago to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chicago to Belfast 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 May 2026.
Use the filters below to find and compare flights from Chicago to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 11/11

17:10-10:15

1 stop11h 05m

Belfast City

Wed 18/11

06:35-18:45

1 stop18h 10m

£646

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 13/9

17:00-10:30

1 stop11h 30m

Belfast City

Wed 16/9

20:35-13:50

1 stop23h 15m

£659

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 5/7

09:50-18:25

2 stops26h 35m

Belfast Intl

Tue 21/7

23:30-16:57

2 stops23h 27m

£668

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 4/9

14:15-21:50

2 stops25h 35m

Belfast Intl

Sat 12/9

09:30-16:00

3 stops36h 30m

£672

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 6/9

12:29-09:20

2 stops14h 51m

Belfast City

Thu 10/9

17:30-14:15

1 stop26h 45m

£677

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 19/7

09:50-18:25

2 stops26h 35m

Belfast Intl

Mon 3/8

06:30-22:05

2 stops21h 35m

£678
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 1/9

19:05-15:20

1 stop14h 15m

Belfast City

Fri 11/9

09:35-18:15

1 stop14h 40m

£680

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 7/9

08:48-09:20

2 stops18h 32m

Belfast City

Thu 10/9

09:50-21:36

2 stops17h 46m

£684

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 3/9

16:20-09:20

1 stop11h 00m

Belfast City

Thu 10/9

17:30-14:15

1 stop26h 45m

£711

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 3/9

16:20-09:20

1 stop11h 00m

Belfast City

Fri 11/9

09:50-23:57

2 stops20h 07m

£718

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 26 resultsSorted by cheapest first
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Best time to book a flight from Chicago to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Chicago 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 Chicago to Belfast
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 Chicago to Belfast. 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 Chicago to Belfast?

    Departing from Chicago to Belfast will take you 11h. There are 3644 mi between Chicago and Belfast. This flight may include one or multiple stops.

  • What are the most popular routes from Chicago to Belfast?

    The most popular route from Chicago to Belfast is Chicago O'Hare Intl - Belfast Intl. You may also consider Chicago O'Hare Intl - Belfast City or Chicago Midway - Belfast City.

  • Can I find deals for flights from Chicago to Belfast that include hotel bookings?

    Yes. In addition to deals on Chicago to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Belfast?

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

  • Can I find deals for business class flights from Chicago to Belfast?

    Yes. Cheapflights offers flight deals from Chicago to Belfast 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Chicago to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Belfast Intl flights

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 Chicago to Belfast?

Cheapflights helps you search for flights from Chicago to Belfast via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Chicago to Belfast?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Chicago to Belfast for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Chicago to Belfast with no change fees?

Certainly. Search results for flights to Belfast from Chicago shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Chicago to Belfast become cheaper?

Not ready to book yet? You can track prices for flights from Chicago to Belfast on Cheapflights with our Price Alert feature and get notified when better prices are available.

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