How long is the flight from Belfast City Airport to Illinois?

For as low as £755, British Airways can have you in Illinois from Belfast City Airport in 18h 10m. The distance from Belfast City Airport to Illinois is about 3644 mi.

In terms of precipitation, rainfall in Illinois 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 Illinois when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Illinois, 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 BHD to IL?

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

Can I find deals for flights from Belfast City to Illinois that include hotel bookings?

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

How can I find direct flights from Belfast City to Illinois?

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

Can I find deals for business class flights from Belfast City to Illinois?

Yes. Cheapflights offers flight deals from Belfast City to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£286+ Cheap Flights from Belfast City Airport to Illinois

Cheap flight deals from Belfast City to Illinois

Enter your travel dates to find the best prices.

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Best

Last-minute

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Cheapest flights from Belfast City to Illinois
Explore the most affordable flight options available from Belfast City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

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 City to Illinois

Round-trip from	£755
One-way from	£286

British Airways
2/12-6/12
2 total stops
29h 45m total
Belfast to Illinois

Search Deals

12/10
3 total stops
53h 40m total
Belfast to Illinois

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

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

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Mon 12/10

18:10-17:50

3 stops53h 40m

£286

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Fri 18/9

19:10-22:59

2 stops33h 49m

£429

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sun 4/10

07:00-22:59

2 stops21h 59m

£438

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sun 4/10

19:10-13:50

1 stop24h 40m

£455

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Fri 21/8

06:50-18:15

3 stops41h 25m

£509

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Mon 12/10

06:30-18:15

1 stop17h 45m

£525

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Fri 21/8

17:05-14:00

2 stops26h 55m

£744

Fastest single journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Fri 18/9

11:00-18:15

1 stop13h 15m

£768

Flights are sorted by cheapest return flights first.

Deals found on 14/8

Showing 1-10 of 12 resultsSorted by cheapest first

Best time to book a flight from Belfast City to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Belfast City with our price prediction graph.

BHD-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 City Airport to Illinois

BHD-USIL

BHD-ORD

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

Related info for your journey

How long is the flight from Belfast City Airport to Illinois?
For as low as £755, British Airways can have you in Illinois from Belfast City Airport in 18h 10m. The distance from Belfast City Airport to Illinois is about 3644 mi.
Can I find deals for flights from Belfast City to Illinois that include hotel bookings?
Yes. In addition to deals on Belfast City to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast City to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast City to Illinois.
Can I find deals for business class flights from Belfast City to Illinois?
Yes. Cheapflights offers flight deals from Belfast City to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Belfast City to Illinois?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast City to Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from Belfast City to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

Yes, Cheapflights offers price alerts on Belfast City to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Belfast City Airport to Illinois from £286

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast City to Illinois

Cheapest flights from Belfast City to IllinoisExplore the most affordable flight options available from Belfast City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Explore the most affordable flight options available from Belfast City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Best flights from Belfast City to IllinoisDiscover carefully curated flight deals from Belfast City to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Discover carefully curated flight deals from Belfast City to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Last-minute flights from Belfast City to IllinoisDiscover last-minute flight deals from Belfast City to Illinois. Data last updated 14 August 2026 and is based on user searches.

Discover last-minute flight deals from Belfast City to Illinois. Data last updated 14 August 2026 and is based on user searches.

One-way flights from Belfast City to IllinoisSearch for one-way flight options from Belfast City to Illinois. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.

Search for one-way flight options from Belfast City to Illinois. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.

Find flight deals from Belfast City to Illinois

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

Best time to book a flight from Belfast City to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Belfast City with our price prediction graph.

Cheapflights Insights

Related info for your journey

How long is the flight from Belfast City Airport to Illinois?

Can I find deals for flights from Belfast City to Illinois that include hotel bookings?

How can I find direct flights from Belfast City to Illinois?

Can I find deals for business class flights from Belfast City to Illinois?

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 City to Illinois

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

Complete your trip

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

Direct flights to United States

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

Search flights from Belfast City to Illinois by cabin class

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

Belfast City and Illinois flights

Browse other Belfast City and Illinois flight options. Last updated on 14 August 2026.

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Belfast City to Illinois flights

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How does Cheapflights help users find flights from Belfast City to Illinois?

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

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

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

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Cheapest flights from Belfast City to Illinois
Explore the most affordable flight options available from Belfast City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Best flights from Belfast City to Illinois
Discover carefully curated flight deals from Belfast City to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Last-minute flights from Belfast City to Illinois
Discover last-minute flight deals from Belfast City to Illinois. Data last updated 14 August 2026 and is based on user searches.

One-way flights from Belfast City to Illinois
Search for one-way flight options from Belfast City to Illinois. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.