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Cheap flights from Belfast Intl Airport to Chicago from £478

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
23 Jul — 30 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Chicago
Explore the most affordable flight options available from Belfast Intl to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 June 2026.

Thu 9/708:20
BFS
-
ORD
3 stops17h 45m
Multiple Airlines
Mon 13/709:50
ORD
-
BFS
2 stops29h 45m
Multiple Airlines
Deal found 18/6£639
Tue 14/721:20
BFS
-
ORD
3 stops45h 20m
Multiple Airlines
Wed 22/717:35
ORD
-
BFS
2 stops14h 55m
Multiple Airlines
Deal found 20/6£645
Thu 6/808:20
BFS
-
ORD
2 stops14h 37m
Multiple Airlines
Thu 13/815:45
ORD
-
BFS
2 stops21h 10m
Multiple Airlines
Deal found 21/6£679
Thu 2/706:40
BFS
-
ORD
3 stops33h 36m
Multiple Airlines
Tue 21/722:25
ORD
-
BFS
2 stops17h 50m
Multiple Airlines
Deal found 19/6£697
Wed 19/806:15
BFS
-
ORD
2 stops19h 00m
Multiple Airlines
Thu 27/815:45
ORD
-
BFS
2 stops21h 10m
Multiple Airlines
Deal found 22/6£704
Wed 12/817:45
BFS
-
ORD
2 stops24h 55m
Multiple Airlines
Tue 18/815:45
ORD
-
BFS
2 stops22h 05m
Multiple Airlines
Deal found 20/6£737

Find flight deals from Belfast Intl to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) 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 23 June 2026.

Round-trip from

£639

One-way from

£478
9/7-13/7
  • 9/7-13/7
  • 5 total stops
  • 47h 30m total
  • Belfast to Chicago
Search Deals
29/6
  • 29/6
  • 3 total stops
  • 46h 55m total
  • Belfast to Chicago
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl 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 23 June 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 9/7

08:20-20:05

3 stops17h 45m

Chicago O'Hare Intl

Mon 13/7

09:50-21:35

2 stops29h 45m

£639

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 14/7

21:20-12:40

3 stops45h 20m

Chicago O'Hare Intl

Wed 22/7

17:35-14:30

2 stops14h 55m

£645

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 2/7

06:40-10:16

3 stops33h 36m

Chicago O'Hare Intl

Tue 21/7

22:25-22:15

2 stops17h 50m

£697

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 19/8

06:15-19:15

2 stops19h 00m

Chicago O'Hare Intl

Thu 27/8

15:45-18:55

2 stops21h 10m

£704

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 12/8

17:45-12:40

2 stops24h 55m

Chicago O'Hare Intl

Tue 18/8

15:45-19:50

2 stops22h 05m

£737

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 13/7

20:35-22:05

3 stops31h 30m

Chicago O'Hare Intl

Sun 19/7

09:50-15:55

2 stops24h 05m

£744
Fastest return journey

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 18/7

22:25-14:06

2 stops21h 41m

Chicago O'Hare Intl

Sun 19/7

17:35-15:55

2 stops16h 20m

£794

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 6/8

08:20-20:05

3 stops17h 45m

Chicago O'Hare Intl

Thu 13/8

08:40-18:55

3 stops28h 15m

£802
Cheapest one-way

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 29/6

21:50-14:45

3 stops46h 55m

£478
Fastest single journey

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 2/8

06:45-19:52

3 stops43h 07m

£490

Flights are sorted by cheapest return flights first.

Deals found on 22/6

Sorted by cheapest first

Best time to book a flight from Belfast Intl to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Belfast Intl 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 Intl Airport 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 Intl to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl 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.

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belfast Intl 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

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How does Cheapflights help users find flights from Belfast Intl to Chicago?

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

Can Cheapflights find flights from Belfast Intl 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 Intl 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 Intl to Chicago become cheaper?

Of course! You can now track prices for flights from Belfast Intl to Chicago and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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