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Cheap flights from Chicago to Belfast from £231

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
6 Aug — 13 Aug1
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 7 July 2026.

Wed 16/914:15
ORD
-
BFS
2 stops20h 50m
Multiple Airlines
Tue 22/908:50
BFS
-
ORD
3 stops42h 30m
Multiple Airlines
Deal found 3/7£552
Tue 6/1019:25
ORD
-
BFS
2 stops18h 15m
Multiple Airlines
Sun 11/1022:10
BFS
-
ORD
3 stops48h 00m
Multiple Airlines
Deal found 5/7£582
Tue 18/822:25
ORD
-
BFS
2 stops17h 50m
Multiple Airlines
Tue 25/821:25
BFS
-
ORD
3 stops45h 15m
Multiple Airlines
Deal found 4/7£594
Wed 19/819:25
ORD
-
BFS
2 stops20h 20m
Multiple Airlines
Wed 26/817:45
BFS
-
ORD
2 stops24h 55m
Multiple Airlines
Deal found 5/7£597
Wed 19/819:25
ORD
-
BHD
3 stops19h 40m
Multiple Airlines
Wed 26/809:20
BHD
-
ORD
3 stops42h 00m
Multiple Airlines
Deal found 5/7£623
Mon 5/1019:05
ORD
-
BHD
1 stop11h 50m
British Airways
Tue 13/1009:40
BHD
-
ORD
1 stop12h 15m
British Airways
Deal found 5/7£647
Sun 15/1117:10
ORD
-
BHD
1 stop11h 10m
British Airways
Thu 19/1107:40
BHD
-
ORD
1 stop12h 10m
British Airways
Deal found 5/7£661
Mon 3/821:15
ORD
-
BHD
1 stop12h 15m
British Airways
Tue 18/820:25
BHD
-
ORD
1 stop25h 30m
British Airways
Deal found 6/7£680
Tue 6/1021:15
ORD
-
BHD
1 stop12h 05m
British Airways
Sun 11/1006:30
BHD
-
ORD
1 stop17h 45m
British Airways
Deal found 5/7£683
Wed 16/917:00
ORD
-
BHD
1 stop13h 00m
British Airways
Tue 22/906:30
BHD
-
ORD
1 stop13h 20m
British Airways
Deal found 3/7£685
Mon 5/1013:19
MDW
-
BHD
2 stops14h 01m
KLM
Tue 13/1009:50
BHD
-
MDW
2 stops18h 35m
KLM
Deal found 5/7£685
Mon 5/1019:25
ORD
-
BHD
2 stops15h 25m
Multiple Airlines
Tue 13/1008:05
BHD
-
ORD
3 stops38h 05m
Multiple Airlines
Deal found 5/7£685

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 7 July 2026.

Round-trip from

£552

One-way from

£231
16/9-22/9
  • 16/9-22/9
  • 5 total stops
  • 63h 20m total
  • Chicago to Belfast
Search Deals
12/9
  • 12/9
  • 2 total stops
  • 19h 25m 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 7 July 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 - BFS

ORDBFS

Chicago O'Hare Intl

Wed 19/8

22:25-23:15

3 stops18h 50m

Belfast Intl

Wed 26/8

17:45-12:40

2 stops24h 55m

£594

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 18/8

19:25-22:15

2 stops20h 50m

Belfast Intl

Tue 25/8

05:55-13:22

3 stops37h 27m

£607

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 3/8

22:25-23:10

2 stops18h 45m

Belfast Intl

Tue 18/8

05:55-14:50

3 stops38h 55m

£652

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 21/8

19:25-21:50

2 stops20h 25m

Belfast Intl

Fri 28/8

07:15-18:15

2 stops17h 00m

£658

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 5/10

15:45-15:35

2 stops17h 50m

Belfast Intl

Tue 13/10

07:35-16:10

3 stops38h 35m

£665

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 5/10

13:19-09:20

2 stops14h 01m

Belfast City

Tue 13/10

09:50-22:25

2 stops18h 35m

£685

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 19/8

16:30-13:35

2 stops15h 05m

Belfast City

Wed 26/8

06:30-16:58

2 stops16h 28m

£716

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 19/8

18:42-16:55

2 stops16h 13m

Belfast City

Wed 26/8

09:50-22:36

2 stops18h 46m

£722

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 16/9

19:05-12:00

1 stop10h 55m

Belfast City

Sun 20/9

20:10-15:55

1 stop25h 45m

£737

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Thu 20/8

18:42-16:55

2 stops16h 13m

Belfast City

Tue 25/8

09:50-22:36

2 stops18h 46m

£810

Flights are sorted by cheapest return flights first.

Deals found on 4/7

Showing 1-10 of 31 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 10h 55m. 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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