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Cheap flights from Chicago to Belfast from £206

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
14 Nov — 21 Nov1
1 adult
1 adult, Economy

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 15 October 2025.

Thu 27/1118:30ORD - BFS
2 stops19h 55mMultiple Airlines
Thu 4/1207:05BFS - ORD
2 stops16h 15mMultiple Airlines
Deal found 13/10£454
Fri 28/1118:30ORD - BFS
2 stops14h 40mMultiple Airlines
Fri 5/1208:05BFS - ORD
2 stops15h 15mMultiple Airlines
Deal found 14/10£458
Mon 10/1114:31ORD - BFS
3 stops23h 44mMultiple Airlines
Tue 25/1109:25BFS - ORD
3 stops35h 35mMultiple Airlines
Deal found 13/10£470
Wed 12/1115:08ORD - BHD
2 stops13h 07mAmerican Airlines
Wed 19/1109:15BHD - ORD
1 stop12h 10mAmerican Airlines
Deal found 13/10£479
Tue 2/1217:10ORD - BHD
1 stop11h 20mBritish Airways
Wed 6/506:50BHD - ORD
1 stop15h 05mBritish Airways
Deal found 14/10£489
Tue 2/1217:10ORD - BHD
1 stop11h 20mBritish Airways
Mon 4/519:30BHD - ORD
1 stop24h 20mBritish Airways
Deal found 14/10£491
Wed 12/1116:25ORD - BHD
1 stop18h 25mMultiple Airlines
Wed 19/1106:30BHD - ORD
1 stop13h 50mMultiple Airlines
Deal found 13/10£492
Wed 3/1218:30ORD - BFS
2 stops17h 25mMultiple Airlines
Sun 7/1209:25BFS - ORD
2 stops13h 55mMultiple Airlines
Deal found 12/10£495
Wed 12/1118:30ORD - BFS
2 stops20h 10mMultiple Airlines
Wed 19/1107:20BFS - ORD
2 stops16h 00mMultiple Airlines
Deal found 13/10£497
Mon 1/1216:25ORD - BHD
1 stop18h 25mDelta
Tue 5/506:30BHD - ORD
1 stop13h 50mDelta
Deal found 14/10£505
Wed 3/1218:30ORD - BHD
2 stops18h 30mMultiple Airlines
Sun 7/1207:25BHD - ORD
2 stops15h 55mMultiple Airlines
Deal found 12/10£506
Sun 30/1116:25ORD - BHD
1 stop18h 25mDelta
Fri 8/506:30BHD - ORD
2 stops21h 06mDelta
Deal found 14/10£509

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 October 2025.

Round-trip from

£454

One-way from

£206
27/11-4/12
  • 27/11-4/12
  • 4 total stops
  • 36h 10m total
  • Chicago to Belfast
Search Deals
8/12
  • 8/12
  • 3 total stops
  • 49h 30m 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 15 October 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 - BFS

ORDBFS

Chicago O'Hare Intl

Thu 27/11

18:30-20:25

2 stops19h 55m

Belfast Intl

Thu 4/12

07:05-17:20

2 stops16h 15m

£454

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 28/11

18:30-15:10

2 stops14h 40m

Belfast Intl

Fri 5/12

08:05-17:20

2 stops15h 15m

£458

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 10/11

14:31-20:15

3 stops23h 44m

Belfast Intl

Tue 25/11

09:25-15:00

3 stops35h 35m

£470

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 4/2

17:10-10:15

1 stop11h 05m

Belfast City

Wed 11/2

11:25-18:45

1 stop13h 20m

£480

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 12/11

15:08-10:15

2 stops13h 07m

Belfast City

Wed 19/11

06:35-17:52

2 stops17h 17m

£487

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/12

17:10-10:30

1 stop11h 20m

Belfast City

Thu 7/5

09:35-18:15

1 stop14h 40m

£489

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/12

17:10-10:30

1 stop11h 20m

Belfast City

Tue 5/5

06:35-13:50

1 stop13h 15m

£489

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/12

17:10-10:30

1 stop11h 20m

Belfast City

Wed 6/5

06:50-15:55

1 stop15h 05m

£489

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/12

17:10-10:30

1 stop11h 20m

Belfast City

Mon 4/5

19:30-13:50

1 stop24h 20m

£491

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 3/12

18:30-17:55

2 stops17h 25m

Belfast Intl

Sun 7/12

09:25-17:20

2 stops13h 55m

£495

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 49 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 05m. There are 3644 mi between Chicago and Belfast. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Chicago to Belfast one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £281. However, be on the lookout for offers from KLM and Delta, as they are both options that can get you from Chicago to Belfast for a low price.

  • 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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