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Cheap flights from Chicago to Belfast from £239

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
13 Jun — 20 Jun1
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 14 May 2026.

Mon 19/1017:00
ORD
-
BHD
1 stop13h 55m
British Airways
Wed 28/1006:35
BHD
-
ORD
1 stop18h 10m
British Airways
Deal found 12/5£644
Mon 17/822:35
ORD
-
BHD
1 stop10h 55m
American Airlines
Fri 21/809:35
BHD
-
ORD
1 stop14h 00m
American Airlines
Deal found 10/5£655
Tue 10/1121:45
ORD
-
BHD
1 stop13h 00m
British Airways
Fri 13/1111:30
BHD
-
ORD
1 stop13h 15m
British Airways
Deal found 12/5£657
Wed 2/1214:42
ORD
-
BHD
2 stops13h 33m
American Airlines
Tue 8/1206:35
BHD
-
ORD
1 stop18h 40m
American Airlines
Deal found 12/5£659
Wed 10/608:50
ORD
-
BFS
2 stops28h 25m
Multiple Airlines
Mon 15/621:55
BFS
-
ORD
3 stops37h 57m
Multiple Airlines
Deal found 13/5£664
Wed 2/1212:00
ORD
-
BHD
2 stops16h 15m
British Airways
Tue 8/1206:35
BHD
-
ORD
2 stops17h 01m
British Airways
Deal found 12/5£668
Mon 17/817:00
ORD
-
BHD
1 stop13h 55m
British Airways
Fri 21/809:35
BHD
-
ORD
2 stops20h 23m
British Airways
Deal found 10/5£675
Wed 2/1207:15
ORD
-
BFS
3 stops30h 05m
Multiple Airlines
Tue 8/1210:05
BFS
-
ORD
3 stops35h 25m
Multiple Airlines
Deal found 12/5£689
Thu 8/1019:05
ORD
-
BHD
1 stop14h 25m
British Airways
Mon 12/1019:35
BHD
-
ORD
1 stop24h 15m
British Airways
Deal found 11/5£690
Sat 12/919:25
ORD
-
BHD
2 stops18h 15m
Multiple Airlines
Sun 20/920:10
BHD
-
ORD
3 stops47h 50m
Multiple Airlines
Deal found 10/5£702
Thu 11/616:37
ORD
-
BFS
2 stops20h 18m
Multiple Airlines
Thu 18/606:10
BFS
-
ORD
3 stops45h 55m
Multiple Airlines
Deal found 13/5£720
Sat 30/509:55
ORD
-
BFS
2 stops17h 00m
Multiple Airlines
Mon 8/610:30
BFS
-
ORD
3 stops38h 55m
Multiple Airlines
Deal found 10/5£735

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 14 May 2026.

Round-trip from

£644

One-way from

£239
British Airways
  • British Airways
  • 19/10-28/10
  • 2 total stops
  • 32h 05m total
  • Chicago to Belfast
Search Deals
British Airways
  • British Airways
  • 8/9
  • 1 total stop
  • 11h 45m 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 14 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
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 10/11

21:45-14:50

1 stop11h 05m

Belfast City

Fri 13/11

06:45-13:50

1 stop13h 05m

£657

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 11/6

16:37-18:55

2 stops20h 18m

Belfast Intl

Thu 18/6

06:10-22:05

3 stops45h 55m

£720

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 21/7

08:45-22:15

3 stops31h 30m

Belfast Intl

Wed 29/7

05:55-22:05

2 stops22h 10m

£742

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 5/6

15:45-16:30

2 stops18h 45m

Belfast Intl

Thu 11/6

21:10-05:52

3 stops38h 42m

£768

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 21/7

16:20-16:55

1 stop18h 35m

Belfast City

Wed 5/8

17:30-14:15

1 stop26h 45m

£782

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 2/8

16:20-16:55

1 stop18h 35m

Belfast City

Mon 10/8

17:30-16:24

2 stops28h 54m

£789

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 21/7

16:20-16:55

1 stop18h 35m

Belfast City

Tue 4/8

09:50-20:46

2 stops16h 56m

£790

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 1/8

22:25-20:50

2 stops16h 25m

Belfast Intl

Sun 9/8

06:55-21:25

2 stops20h 30m

£799

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 19/7

22:30-18:45

1 stop14h 15m

Belfast City

Sat 25/7

16:15-12:30

1 stop26h 15m

£818

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 21/7

17:00-10:45

1 stop11h 45m

Belfast City

Wed 29/7

20:35-12:30

1 stop21h 55m

£827

Flights are sorted by cheapest return flights first.

Deals found on 13/5

Showing 1-10 of 41 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 05m. 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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