Find flights
When to book
Airlines
FAQs

Cheap flights from Belfast City Airport to Illinois from £418

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ORD
28 Apr — 5 May1
1 adult

Cheap flight deals from Belfast City to Illinois

Keep the following information in mind while searching for Belfast City to Illinois flight deals. Data was last updated 23 April 2025.

Round-trip from

£520

One-way from

£418

Popular in

March

Cheapest in

September

Average price

£745
Delta
  • Delta
  • 7/5-11/5
  • 3 total stops
  • 35h 20m total
  • Belfast to Illinois
12/8
  • 12/8
  • 2 total stops
  • 28h 37m total
  • Belfast to Illinois
Highest demand for flights based on searches. 26% potential increase in price (£191 potential increase over avg. return price).
Cheapest flight prices on average. 8% potential price decrease (£41 potential savings vs. average return price).
Average for round-trip flights in April 2025

Find flight deals from Belfast City to Illinois

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 23 April 2025.

Wed 7/506:30BHD - ORD
1 stop14h 10mKLM
Sun 11/519:25ORD - BHD
2 stops15h 30mKLM
Deal found 23/4£520
Wed 7/506:30BHD - ORD
2 stops21h 44mDelta
Sun 11/519:25ORD - BHD
2 stops19h 50mDelta
Deal found 23/4£524
Wed 7/516:05BHD - ORD
1 stop25h 40mAmerican Airlines
Sun 11/519:15ORD - BHD
1 stop11h 50mAmerican Airlines
Deal found 22/4£525
Wed 7/506:50BHD - ORD
1 stop13h 50mBritish Airways
Sun 11/522:25ORD - BHD
1 stop13h 20mBritish Airways
Deal found 23/4£598
Sat 7/609:35BHD - ORD
1 stop14h 40mIberia
Sat 14/617:10ORD - BHD
2 stops15h 55mIberia
Deal found 23/4£635
Sat 7/607:00BHD - ORD
2 stops22h 29mMultiple Airlines
Sat 14/610:50ORD - BHD
3 stops20h 55mMultiple Airlines
Deal found 23/4£668
Mon 2/606:30BHD - ORD
2 stops16h 15mVirgin Atlantic
Fri 6/617:40ORD - BHD
2 stops21h 35mVirgin Atlantic
Deal found 22/4£1,186

Cheapflights Fare Finder

Customise your flight search to find flights from Belfast City to Illinois 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 April 2025.
Use the filters below to find and compare flights from Belfast City Airport to Illinois that are best for you.

Fly from

Belfast City

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 7/5

06:30-14:40

1 stop14h 10m

Chicago O'Hare Intl

Sun 11/5

19:25-16:55

2 stops15h 30m

£520

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 7/5

06:30-22:14

2 stops21h 44m

Chicago O'Hare Intl

Sun 11/5

19:25-21:15

2 stops19h 50m

£524

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 7/5

16:05-11:45

1 stop25h 40m

Chicago O'Hare Intl

Sun 11/5

19:15-13:05

1 stop11h 50m

£525

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 7/5

06:50-14:40

1 stop13h 50m

Chicago O'Hare Intl

Sun 11/5

22:25-17:45

1 stop13h 20m

£598

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/6

09:35-18:15

1 stop14h 40m

Chicago O'Hare Intl

Sat 14/6

17:10-15:05

2 stops15h 55m

£635

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/6

07:00-23:29

2 stops22h 29m

Chicago O'Hare Intl

Sat 14/6

10:50-13:45

3 stops20h 55m

£668

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 2/6

06:30-14:10

1 stop13h 40m

Chicago O'Hare Intl

Fri 6/6

17:40-21:15

2 stops21h 35m

£1,182

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 12/8

18:50-17:27

2 stops28h 37m

£418

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 16/5

10:20-19:00

2 stops14h 40m

£607

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 9/10

16:20-17:00

1 stop30h 40m

£736

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 14 results
1
2

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.
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

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

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.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated 23 April 2025.

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Belfast City to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from Belfast City Airport to Illinois one-way?

    The cheapet airlines for a one-way flight from Belfast City Airport to Illinois are Aer Lingus (£607), Finnair (£736), and British Airways (£777).

  • 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.

  • What is the cheapest month to book a flight from Belfast City Airport to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Belfast City Airport to Illinois (average of £595). Flying from Belfast City Airport to Illinois 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

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.

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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.