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Cheap flights from Belfast to Chicago from £274

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — CHI
14 Sep — 21 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Chicago
Explore the most affordable flight options available from Belfast to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2026.

Mon 28/906:10 -
3 stops44h 31m
Mon 5/1019:25 -
2 stops19h 30m
Deal found 14/8£568
Wed 23/913:50 -
2 stops32h 20m
Wed 30/919:15 -
2 stops21h 05m
Deal found 10/8£619
Mon 7/920:55 -
3 stops29h 46m
Mon 14/914:15 -
2 stops24h 25m
Deal found 12/8£623
Fri 25/921:10 -
2 stops28h 38m
Fri 2/1022:25 -
2 stops17h 25m
Deal found 11/8£637
Wed 2/1208:40 -
1 stop16h 05m
Sun 6/1215:21 -
2 stops13h 24m
Deal found 13/8£755
Wed 2/907:00 -
2 stops18h 15m
Wed 30/921:00 -
2 stops18h 05m
Deal found 12/8£4,567
Wed 2/917:30 -
1 stop26h 45m
Wed 30/916:50 -
1 stop18h 05m
Deal found 12/8£4,983

Find flight deals from Belfast to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to Chicago (CHI). 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 August 2026.

Round-trip from

£568

One-way from

£274
28/9-5/10
  • 28/9-5/10
  • 5 total stops
  • 64h 01m total
  • Belfast to Chicago
Search Deals
4/10
  • 4/10
  • 3 total stops
  • 49h 40m total
  • Belfast to Chicago
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to Chicago 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 August 2026.
Use the filters below to find and compare flights from Belfast to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 28/9

06:10-20:41

3 stops44h 31m

Chicago O'Hare Intl

Mon 5/10

19:25-20:55

2 stops19h 30m

£568

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 25/9

21:10-19:48

2 stops28h 38m

Chicago O'Hare Intl

Fri 2/10

22:25-21:50

2 stops17h 25m

£637

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 23/9

06:10-19:48

2 stops19h 38m

Chicago O'Hare Intl

Wed 30/9

09:55-17:55

3 stops26h 00m

£641

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 7/9

20:55-20:41

3 stops29h 46m

Chicago O'Hare Intl

Mon 14/9

19:25-16:15

2 stops14h 50m

£659
Fastest return journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 2/12

06:35-18:45

1 stop18h 10m

Chicago O'Hare Intl

Sun 6/12

17:10-10:45

1 stop11h 35m

£755

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 2/9

07:00-19:15

2 stops18h 15m

Chicago O'Hare Intl

Wed 30/9

21:00-21:05

2 stops18h 05m

£4,567
Cheapest one-way

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sun 4/10

22:10-17:50

3 stops49h 40m

£274

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Mon 12/10

18:10-17:50

3 stops53h 40m

£286

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 12/10

18:50-17:50

3 stops53h 00m

£294

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 18/9

20:15-19:48

2 stops29h 33m

£378

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Belfast to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Belfast 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 Belfast to Chicago

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 Belfast to Chicago. 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 Belfast to Chicago?

    There are many flights that can get you from Belfast to Chicago in 18h 10m. Fly via British Airways to get the fastest option. Belfast and Chicago are separated by a distance of 3644 mi.

  • Can I find deals for flights from Belfast to Chicago that include hotel bookings?

    Yes. In addition to deals on Belfast to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Chicago.

  • Can I find deals for business class flights from Belfast to Chicago?

    Yes. Cheapflights offers flight deals from Belfast to Chicago 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Belfast to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Belfast Intl to O'Hare Intl flights
Belfast City to O'Hare 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 Belfast to Chicago?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Chicago from Belfast today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Belfast to Chicago?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast to Chicago.

Can Cheapflights find flights from Belfast to Chicago with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Belfast to Chicago, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Belfast to Chicago become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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