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Cheap flights from Belfast Intl Airport to Chicago from £438

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
25 Mar — 1 Apr1
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 February 2026.

Mon 13/409:15
BFS
-
ORD
2 stops34h 05m
Multiple Airlines
Mon 20/419:25
ORD
-
BFS
3 stops21h 55m
Multiple Airlines
Deal found 23/2£557
Thu 5/308:15
BFS
-
ORD
3 stops37h 10m
Multiple Airlines
Mon 30/319:25
ORD
-
BFS
2 stops14h 10m
Multiple Airlines
Deal found 23/2£622
Thu 5/308:15
BFS
-
ORD
3 stops37h 10m
Multiple Airlines
Fri 6/320:15
ORD
-
BFS
2 stops19h 45m
Multiple Airlines
Deal found 23/2£650
Mon 23/321:00
BFS
-
ORD
2 stops26h 00m
Multiple Airlines
Mon 30/320:40
ORD
-
BFS
1 stop16h 10m
Multiple Airlines
Deal found 23/2£705

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 February 2026.

Round-trip from

£622

One-way from

£438
5/3-30/3
  • 5/3-30/3
  • 5 total stops
  • 51h 20m total
  • Belfast to Chicago
Search Deals
17/6
  • 17/6
  • 2 total stops
  • 21h 15m 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 February 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Chicago that are best for you.

Fly from

Belfast Intl

Fly to

Chicago

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 23/3

21:00-18:00

2 stops26h 00m

Chicago O'Hare Intl

Mon 30/3

20:40-18:50

1 stop16h 10m

£705

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 5/3

09:05-15:25

2 stops36h 20m

Chicago O'Hare Intl

Fri 6/3

20:15-20:30

2 stops18h 15m

£717

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 17/6

06:10-21:25

2 stops21h 15m

£438

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 22/7

09:55-11:50

2 stops31h 55m

£443

Flights are sorted by cheapest return flights first.

Deals found on 19/2

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.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated 23 February 2026.
See what other customers who have flown with British Airways from Belfast Intl Airport to Chicago have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,759 reviews
Check prices

Entertainment

6.4

Overall

6.7

Crew

7.6

Food

6.4

Boarding

6.9

Comfort

6.8

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,759 reviews
British Airways
6.7
Okay
7,759 reviews
Check prices

Entertainment

6.4

Overall

6.7

Crew

7.6

Food

6.4

Boarding

6.9

Comfort

6.8

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

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.

  • What is the cheapest airline to fly from Belfast Intl Airport to Chicago round-trip?

    British Airways, at £497, was found to be the cheapest airline from Belfast Intl Airport to Chicago..

  • 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.

See more FAQs

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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

Top airline flying from Belfast Intl to Chicago

Discover the top airline that operate flights from Belfast Intl to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 23 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£497Average£586FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Intl to Chicago?

Cheapflights helps you search for flights from Belfast Intl to Chicago 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 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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