In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from BFS to CHI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast Intl Airport to Chicago as you normally would.

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.

£361+ Cheap Flights from Belfast Intl Airport to Chicago

Cheap flight deals from Belfast Intl to Chicago

Enter your travel dates to find the best prices.

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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 20 September 2026.

Mon 2/1110:45 -

2 stops36h 00m

Mon 9/1119:15 -

2 stops21h 05m

Deal found 18/9£449

Wed 4/1107:15 -

2 stops18h 50m

Wed 11/1118:30 -

3 stops21h 35m

Deal found 20/9£705

Thu 24/908:15 -

1 stop36h 55m

Mon 28/919:25 -

2 stops29h 40m

Deal found 16/9£910

Mon 21/922:20 -

2 stops26h 55m

Sat 24/1016:45 -

2 stops15h 10m

Deal found 19/9£957

Sat 17/1008:30 -

2 stops16h 45m

Sat 24/1016:45 -

2 stops12h 15m

Deal found 19/9£982

Find flight deals from Belfast Intl to Chicago

Round-trip from	£449
One-way from	£361

2/11-9/11
4 total stops
57h 05m total
Belfast to Chicago

Search Deals

27/1-31/12
3 total stops
26h 10m total
Belfast to Chicago

Search Deals

Cheapflights Fare Finder

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 Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 27/1

21:10-17:20

3 stops26h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£361

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 25/1

09:35-19:15

2 stops15h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£419

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sat 30/1

09:00-19:15

2 stops16h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£443

Fastest return journey

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Thu 28/1

09:05-17:20

2 stops14h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£554

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 4/11

07:15-20:05

2 stops18h 50m

Chicago O'Hare Intl

Wed 11/11

18:30-22:05

3 stops21h 35m

£705

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 2/11

19:00-13:10

2 stops24h 10m

Chicago O'Hare Intl

Mon 9/11

18:30-22:20

3 stops21h 50m

£723

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sat 17/10

08:30-19:15

2 stops16h 45m

Chicago O'Hare Intl

Sat 24/10

16:45-11:00

2 stops12h 15m

£982

Flights are sorted by cheapest return flights first.

Deals found on 18/9

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.

BFS-CHI

BFS-ORD

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

BFS-CHI

BFS-ORD

No data available for this route at this time. Please check back soon.

Related info for your journey

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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Chicago flight routes

Complete your trip

Direct flights to Illinois

Flights by cabin class

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Alternative routes for Belfast Intl to Chicago

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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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Cheap flights from Belfast Intl Airport to Chicago from £361

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast Intl to Chicago

Cheapest flights from Belfast Intl to ChicagoExplore 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 20 September 2026.

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 20 September 2026.

Best flights from Belfast Intl to ChicagoDiscover carefully curated flight deals from Belfast Intl to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Discover carefully curated flight deals from Belfast Intl to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Last-minute flights from Belfast Intl to ChicagoDiscover last-minute flight deals from Belfast Intl to Chicago. Data last updated 20 September 2026 and is based on user searches.

Discover last-minute flight deals from Belfast Intl to Chicago. Data last updated 20 September 2026 and is based on user searches.

One-way flights from Belfast Intl to ChicagoSearch for one-way flight options from Belfast Intl to Chicago. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Search for one-way flight options from Belfast Intl to Chicago. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Find flight deals from Belfast Intl to Chicago

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to Chicago that are best for you.

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.

Cheapflights Insights

Related info for your journey

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

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

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

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 Intl to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Chicago

Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 20 September 2026.

Complete your trip

Complete your trip to Chicago by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Illinois

Book a non-stop flight to one of these other cities located in Illinois.

Search flights from Belfast Intl to Chicago by cabin class

Find flights from Belfast Intl to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Belfast Intl and Chicago flights

Browse other Belfast Intl and Chicago flight options. Last updated on 20 September 2026.

Other flights from Belfast Intl

Browse through other flights departing from Belfast Intl. Flights are based on user searches made on Cheapflights and were last updated on 20 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

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

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

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

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

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Book with Flexibility

Travel Smart

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 20 September 2026.

Best flights from Belfast Intl to Chicago
Discover carefully curated flight deals from Belfast Intl to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Last-minute flights from Belfast Intl to Chicago
Discover last-minute flight deals from Belfast Intl to Chicago. Data last updated 20 September 2026 and is based on user searches.

One-way flights from Belfast Intl to Chicago
Search for one-way flight options from Belfast Intl to Chicago. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.