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Cheap flights from Chicago to Belfast from £305

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 11 November 2025.

Wed 3/1216:25ORD - BHD
1 stop18h 25mDelta
Sun 7/1206:30BHD - ORD
1 stop13h 50mDelta
Deal found 9/11£539
Wed 10/1219:40ORD - BHD
2 stops16h 45mAer Lingus
Wed 17/1206:50BHD - ORD
2 stops17h 05mAer Lingus
Deal found 10/11£551
Sun 7/1222:05ORD - BHD
2 stops34h 10mBritish Airways
Sun 14/1209:10BHD - ORD
1 stop12h 15mBritish Airways
Deal found 10/11£589
Tue 30/1221:45ORD - BHD
1 stop13h 00mBritish Airways
Wed 7/119:25BHD - ORD
1 stop29h 20mBritish Airways
Deal found 10/11£629
Wed 10/1216:25ORD - BHD
1 stop22h 35mDelta
Wed 17/1206:30BHD - ORD
1 stop13h 50mDelta
Deal found 10/11£652
Wed 10/1221:45ORD - BHD
1 stop10h 30mBritish Airways
Wed 17/1219:25BHD - ORD
2 stops31h 12mBritish Airways
Deal found 10/11£662
Mon 29/1213:35ORD - BHD
2 stops21h 15mDelta
Thu 8/117:20BHD - ORD
2 stops31h 08mDelta
Deal found 10/11£665
Sun 7/1219:40ORD - BHD
2 stops12h 25mAer Lingus
Sun 21/1218:00BHD - ORD
2 stops26h 00mAer Lingus
Deal found 9/11£680
Wed 3/1216:52ORD - BHD
2 stops15h 23mAmerican Airlines
Sun 7/1212:10BHD - ORD
2 stops15h 10mAmerican Airlines
Deal found 8/11£686
Thu 25/1210:46ORD - BHD
2 stops28h 14mDelta
Tue 6/117:20BHD - ORD
1 stop27h 00mDelta
Deal found 9/11£690
Sun 7/1218:30ORD - BFS
2 stops18h 25mMultiple Airlines
Sun 21/1207:25BFS - ORD
2 stops18h 35mMultiple Airlines
Deal found 9/11£690
Tue 30/1211:48MDW - BHD
2 stops23h 02mDelta
Tue 6/117:20BHD - MDW
2 stops34h 49mDelta
Deal found 10/11£768

Cheap 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 11 November 2025.

Round-trip from

£532

One-way from

£305
British Airways
  • British Airways
  • 1/5-5/5
  • 2 total stops
  • 26h 45m total
  • Chicago to Belfast
Search Deals
15/12
  • 15/12
  • 2 total stops
  • 19h 29m 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 11 November 2025.
Use the filters below to find and compare flights from Chicago to Belfast that are best for you.

Fly from

Chicago

Fly to

Belfast

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 18/3

22:45-14:15

1 stop10h 30m

Belfast City

Sun 22/3

17:35-14:50

1 stop26h 15m

£532

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

16:25-16:50

1 stop18h 25m

Belfast City

Sun 7/12

06:30-14:20

1 stop13h 50m

£539

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

16:25-21:00

1 stop22h 35m

Belfast City

Sun 7/12

17:20-14:20

1 stop27h 00m

£539

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/4

21:15-18:15

1 stop15h 00m

Belfast City

Tue 7/4

20:20-13:50

1 stop23h 30m

£543

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/4

10:10-21:20

2 stops29h 10m

Belfast City

Tue 7/4

06:30-14:20

1 stop13h 50m

£561

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 21/3

22:45-16:45

1 stop13h 00m

Belfast City

Sun 29/3

20:05-13:50

1 stop23h 45m

£563

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 3/4

14:00-21:20

2 stops25h 20m

Belfast City

Tue 7/4

06:30-18:34

2 stops18h 04m

£608

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 3/4

14:00-21:20

2 stops25h 20m

Belfast City

Tue 7/4

17:25-18:34

2 stops31h 09m

£608

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 10/4

19:25-21:15

2 stops19h 50m

Belfast Intl

Sun 19/4

07:00-17:50

3 stops40h 50m

£667

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 7/12

18:30-18:55

2 stops18h 25m

Belfast Intl

Sun 21/12

07:25-20:00

2 stops18h 35m

£690

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 47 results
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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 30m. 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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