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Cheap flights from Chicago to Belfast from £234

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
4 May — 11 May1
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 4 April 2026.

Sun 8/1117:10
ORD
-
BHD
1 stop11h 10m
British Airways
Fri 13/1106:45
BHD
-
ORD
1 stop13h 05m
British Airways
Deal found 4/4£654
Sun 25/1021:15
ORD
-
BFS
2 stops16h 40m
Multiple Airlines
Sun 1/1123:05
BFS
-
ORD
3 stops24h 15m
Multiple Airlines
Deal found 1/4£660
Mon 18/508:45
ORD
-
BFS
3 stops24h 50m
Multiple Airlines
Tue 26/520:15
BFS
-
ORD
3 stops28h 00m
Multiple Airlines
Deal found 4/4£665
Sun 6/921:15
ORD
-
BHD
1 stop11h 20m
British Airways
Tue 8/920:25
BHD
-
ORD
1 stop27h 50m
British Airways
Deal found 1/4£667
Sun 8/1115:08
ORD
-
BHD
2 stops13h 12m
American Airlines
Fri 13/1108:45
BHD
-
ORD
1 stop14h 20m
American Airlines
Deal found 4/4£669
Tue 1/918:10
ORD
-
BHD
2 stops16h 45m
Multiple Airlines
Wed 9/917:30
BHD
-
ORD
1 stop26h 45m
Multiple Airlines
Deal found 31/3£685
Tue 1/916:16
ORD
-
BHD
2 stops17h 04m
British Airways
Wed 9/911:35
BHD
-
ORD
1 stop12h 40m
British Airways
Deal found 31/3£691
Sun 25/1018:10
ORD
-
BHD
1 stop14h 45m
British Airways
Sun 1/1120:25
BHD
-
ORD
1 stop23h 25m
British Airways
Deal found 1/4£701
Thu 22/1022:35
ORD
-
BHD
1 stop14h 10m
American Airlines
Tue 27/1006:35
BHD
-
ORD
1 stop14h 45m
American Airlines
Deal found 4/4£703
Wed 29/416:05
ORD
-
BFS
2 stops24h 25m
Multiple Airlines
Sun 3/516:30
BFS
-
ORD
2 stops26h 05m
Multiple Airlines
Deal found 1/4£725
Fri 23/1018:00
ORD
-
BFS
2 stops21h 15m
Multiple Airlines
Sat 31/1008:30
BFS
-
ORD
3 stops36h 30m
Multiple Airlines
Deal found 31/3£728
Tue 26/509:55
ORD
-
BFS
2 stops27h 45m
Multiple Airlines
Mon 31/808:40
BFS
-
ORD
3 stops41h 10m
Multiple Airlines
Deal found 30/3£733

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 4 April 2026.

Round-trip from

£665

One-way from

£234
18/5-26/5
  • 18/5-26/5
  • 6 total stops
  • 52h 50m total
  • Chicago to Belfast
Search Deals
15/9
  • 15/9
  • 2 total stops
  • 14h 55m 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 4 April 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

Mon 18/5

08:45-15:35

3 stops24h 50m

Belfast Intl

Tue 26/5

20:15-18:15

3 stops28h 00m

£665

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 6/9

21:15-14:35

1 stop11h 20m

Belfast City

Tue 8/9

20:25-15:55

1 stop25h 30m

£668

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 29/4

16:05-22:30

2 stops24h 25m

Belfast Intl

Sun 3/5

16:30-12:35

2 stops26h 05m

£725

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 29/4

19:25-15:05

2 stops13h 40m

Belfast City

Sun 3/5

07:00-21:25

2 stops20h 25m

£732

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 26/7

14:20-21:50

2 stops25h 30m

Belfast Intl

Sat 8/8

07:40-11:50

2 stops34h 10m

£743

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 26/5

09:55-19:40

2 stops27h 45m

Belfast Intl

Mon 31/8

08:15-21:25

2 stops19h 10m

£749

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 1/10

21:15-19:25

1 stop16h 10m

Belfast City

Sun 11/10

11:00-21:25

2 stops16h 25m

£759

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 22/7

19:05-22:20

2 stops21h 15m

Belfast Intl

Wed 29/7

08:30-11:50

2 stops33h 20m

£762

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 7/5

16:00-15:30

2 stops17h 30m

Belfast City

Sun 10/5

13:10-08:15

2 stops25h 05m

£795

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 10/8

21:00-20:55

2 stops17h 55m

Belfast Intl

Mon 17/8

20:35-21:25

2 stops30h 50m

£813

Flights are sorted by cheapest return flights first.

Deals found on 4/4

Showing 1-10 of 47 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 20m. 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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