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Cheap flights from Chicago to Belfast from £237

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

£466

One-way from

£237
British Airways
  • British Airways
  • 5/12-9/12
  • 2 total stops
  • 28h 15m total
  • Chicago to Belfast
Search Deals
28/9
  • 28/9
  • 3 total stops
  • 43h 10m total
  • Chicago to Belfast
Search Deals

Find flight deals from Chicago to Belfast

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 15 September 2025.

Fri 5/1221:45ORD - BHD
1 stop13h 30mBritish Airways
Tue 9/1210:00BHD - ORD
1 stop14h 45mBritish Airways
Deal found 14/9£466
Thu 30/1018:10ORD - BHD
1 stop19h 40mBritish Airways
Mon 10/1114:50BHD - ORD
1 stop29h 00mBritish Airways
Deal found 14/9£473
Mon 27/1018:10ORD - BHD
1 stop15h 05mMultiple Airlines
Sun 2/1105:30BHD - ORD
2 stops17h 08mMultiple Airlines
Deal found 13/9£473
Mon 27/1017:11ORD - BHD
2 stops17h 54mBritish Airways
Sun 2/1120:25BHD - ORD
2 stops28h 55mBritish Airways
Deal found 13/9£481
Mon 27/1021:45ORD - BHD
1 stop11h 30mAmerican Airlines
Sun 2/1110:40BHD - ORD
1 stop12h 20mAmerican Airlines
Deal found 13/9£483
Wed 3/1217:10ORD - BHD
1 stop11h 05mBritish Airways
Sun 7/1206:30BHD - ORD
1 stop18h 15mBritish Airways
Deal found 12/9£514
Thu 30/1018:10ORD - BHD
1 stop17h 30mMultiple Airlines
Sun 2/1105:30BHD - ORD
2 stops17h 15mMultiple Airlines
Deal found 14/9£518
Sun 12/1020:40ORD - BHD
1 stop15h 00mBritish Airways
Sun 19/1020:05BHD - ORD
1 stop23h 45mBritish Airways
Deal found 13/9£525
Fri 31/1017:11ORD - BHD
2 stops16h 04mBritish Airways
Mon 10/1119:25BHD - ORD
1 stop24h 25mBritish Airways
Deal found 15/9£526
Fri 3/1016:15ORD - BHD
1 stop23h 00mDelta
Tue 7/1006:30BHD - ORD
1 stop13h 40mDelta
Deal found 14/9£532
Fri 31/1021:15ORD - BFS
3 stops20h 30mMultiple Airlines
Mon 10/1122:20BFS - ORD
3 stops46h 40mMultiple Airlines
Deal found 14/9£535
Thu 16/1018:00ORD - BFS
3 stops23h 25mMultiple Airlines
Sat 25/1006:00BFS - ORD
3 stops39h 45mMultiple Airlines
Deal found 14/9£543

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 15 September 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

Fri 5/12

21:45-17:15

1 stop13h 30m

Belfast City

Tue 9/12

10:00-18:45

1 stop14h 45m

£466

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 27/10

17:11-16:05

2 stops17h 54m

Belfast City

Sun 2/11

20:25-19:20

2 stops28h 55m

£481

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 27/10

21:45-14:15

1 stop11h 30m

Belfast City

Sun 2/11

10:40-17:00

1 stop12h 20m

£483

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 31/10

18:10-10:30

1 stop11h 20m

Belfast City

Mon 10/11

14:50-18:45

1 stop33h 55m

£514

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/12

17:10-10:15

1 stop11h 05m

Belfast City

Sun 7/12

06:30-18:45

1 stop18h 15m

£514

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 30/10

18:10-16:40

1 stop17h 30m

Belfast City

Sun 2/11

05:30-17:45

2 stops17h 15m

£518

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 12/10

20:40-17:40

1 stop15h 00m

Belfast City

Sun 19/10

20:05-13:50

1 stop23h 45m

£525

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/10

16:15-21:15

1 stop23h 00m

Belfast City

Tue 7/10

06:30-14:10

1 stop13h 40m

£532

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 31/10

21:15-22:45

3 stops20h 30m

Belfast Intl

Mon 10/11

22:20-15:00

3 stops46h 40m

£535

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 26/9

16:15-16:55

1 stop18h 40m

Belfast City

Wed 1/10

06:30-16:20

2 stops15h 50m

£540

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 28 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 11h 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 Intl.

  • 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.

  • What is the cheapest month to book a flight from Chicago to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Belfast (average of £67). Flying from Chicago to Belfast in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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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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