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Cheap flights from Chicago to Belfast from £335

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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
5 Dec — 12 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 5 November 2025.

Thu 4/1218:30ORD - BFS
2 stops21h 50mMultiple Airlines
Thu 11/1206:30BFS - ORD
2 stops16h 50mMultiple Airlines
Deal found 4/11£538
Wed 3/1216:25ORD - BHD
1 stop22h 35mVirgin Atlantic
Sun 7/1206:30BHD - ORD
1 stop13h 50mVirgin Atlantic
Deal found 3/11£545
Thu 4/1218:30ORD - BHD
2 stops19h 05mMultiple Airlines
Thu 11/1207:25BHD - ORD
2 stops15h 55mMultiple Airlines
Deal found 4/11£550
Thu 4/1221:45ORD - BHD
1 stop28h 40mBritish Airways
Thu 11/1211:05BHD - ORD
1 stop11h 55mBritish Airways
Deal found 4/11£646
Wed 3/1213:17ORD - BHD
2 stops13h 53mAmerican Airlines
Sun 7/1212:10BHD - ORD
2 stops15h 10mAmerican Airlines
Deal found 3/11£747
Tue 30/1218:30ORD - BHD
1 stop11h 00mAmerican Airlines
Mon 5/106:35BHD - ORD
2 stops17h 21mAmerican Airlines
Deal found 4/11£807
Tue 30/1217:10ORD - BHD
1 stop12h 20mBritish Airways
Mon 5/119:25BHD - ORD
1 stop26h 00mBritish Airways
Deal found 4/11£813
Fri 19/1219:40ORD - BFS
2 stops20h 20mMultiple Airlines
Fri 26/1220:50BFS - ORD
2 stops23h 10mMultiple Airlines
Deal found 4/11£958

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 5 November 2025.

Round-trip from

£535

One-way from

£335
British Airways
  • British Airways
  • 18/3-22/3
  • 2 total stops
  • 36h 45m total
  • Chicago to Belfast
Search Deals
British Airways
  • British Airways
  • 14/11
  • 1 total stop
  • 11h 35m 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 5 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

12:10-14:50

1 stop31h 40m

£536

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 4/12

18:30-22:20

2 stops21h 50m

Belfast Intl

Thu 11/12

06:30-17:20

2 stops16h 50m

£538

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

16:25-21:00

1 stop22h 35m

Belfast City

Sun 7/12

06:30-14:20

1 stop13h 50m

£545

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/4

21:15-15:30

1 stop12h 15m

Belfast City

Tue 7/4

06:35-13:50

1 stop13h 15m

£548

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 4/12

18:30-19:35

2 stops19h 05m

Belfast City

Thu 11/12

07:25-17:20

2 stops15h 55m

£550

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 1/4

09:20-16:55

2 stops25h 35m

Belfast City

Sun 5/4

17:25-09:56

2 stops46h 31m

£580

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 3/4

13:00-21:20

2 stops26h 20m

Belfast City

Tue 7/4

17:25-18:34

2 stops31h 09m

£648

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 19/12

19:40-22:00

2 stops20h 20m

Belfast Intl

Fri 26/12

20:50-14:00

2 stops23h 10m

£958

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 14/11

20:40-14:15

1 stop11h 35m

£335

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 14/11

14:50-10:30

2 stops13h 40m

£338

Flights are sorted by cheapest return flights first.

Deals found on 3/11

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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