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Cheap flights from Belfast Intl Airport to Chicago from £373

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 26/10. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap 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 12 September 2025.

Round-trip from

£560

One-way from

£373

Popular in

December

Cheapest in

November

Average price

£517
27/10-3/11
  • 27/10-3/11
  • 6 total stops
  • 76h 43m total
  • Belfast to Chicago
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26/10
  • 26/10
  • 2 total stops
  • 46h 38m total
  • Belfast to Chicago
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Belfast Intl to Chicago

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 12 September 2025.

Mon 27/1021:00BFS - ORD
3 stops48h 00mMultiple Airlines
Mon 3/1110:27ORD - BFS
3 stops28h 43mMultiple Airlines
Deal found 12/9£560
Sat 13/916:50BFS - ORD
2 stops29h 20mMultiple Airlines
Sun 14/919:25ORD - BFS
2 stops20h 05mMultiple Airlines
Deal found 10/9£711

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 12 September 2025.
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 27/10

21:00-16:00

3 stops48h 00m

Chicago O'Hare Intl

Mon 3/11

10:27-21:10

3 stops28h 43m

£560

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 26/10

22:45-16:23

2 stops46h 38m

£373

Flights are sorted by cheapest return flights first.

Deals found on 12/9

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

How much does it cost for a return flight from Belfast Intl Airport to Chicago?

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 12 September 2025.
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
7,361 reviews
Check prices

Entertainment

6.4

Food

6.3

Overall

6.7

Comfort

6.7

Crew

7.6

Boarding

6.9

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
7,361 reviews
British Airways
6.7
Okay
7,361 reviews
Check prices

Entertainment

6.4

Food

6.3

Overall

6.7

Comfort

6.7

Crew

7.6

Boarding

6.9

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

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 £479, was found to be the cheapest airline from Belfast Intl Airport to Chicago.. British Airways is currently priced 29% below the average price you’ll pay for this route.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to Chicago (average of £595). Flying from Belfast Intl Airport to Chicago in July is currently the most expensive (average of £843). 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

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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 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£479Average£584FlexibilityNo 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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