Find flights
When to book
Airlines

Cheap flights from Belfast Intl Airport to Illinois from £500

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Illinois

Enter your travel dates to find the best prices.

Best flights from Belfast Intl to Illinois
Discover carefully curated flight deals from Belfast Intl to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 December 2025.

Mon 19/122:20BFS - ORD
3 stops46h 40mMultiple Airlines
Mon 26/118:30ORD - BFS
2 stops18h 35mMultiple Airlines
Deal found 11/12£500
Sat 24/108:10BFS - ORD
2 stops15h 10mMultiple Airlines
Sat 31/118:30ORD - BFS
2 stops19h 45mMultiple Airlines
Deal found 10/12£563
Sun 25/122:45BFS - ORD
3 stops26h 30mMultiple Airlines
Sun 1/216:38ORD - BFS
3 stops21h 32mMultiple Airlines
Deal found 10/12£587
Wed 7/107:55BFS - ORD
2 stops17h 07mMultiple Airlines
Wed 14/118:30ORD - BFS
2 stops15h 40mMultiple Airlines
Deal found 10/12£662

Find flight deals from Belfast Intl to Illinois

Keep the following information in mind while searching for Belfast Intl to Illinois flight deals. Data was last updated 12 December 2025.

Round-trip from

£500
19/1-26/1
  • 19/1-26/1
  • 5 total stops
  • 65h 15m total
  • Belfast to Illinois
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl 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 12 December 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Illinois that are best for you.

Fly from

Belfast Intl

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 19/1

22:20-15:00

3 stops46h 40m

Chicago O'Hare Intl

Mon 26/1

18:30-19:05

2 stops18h 35m

£500

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 24/1

08:10-17:20

2 stops15h 10m

Chicago O'Hare Intl

Sat 31/1

18:30-20:15

2 stops19h 45m

£563

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 25/1

22:45-19:15

3 stops26h 30m

Chicago O'Hare Intl

Sun 1/2

16:38-20:10

3 stops21h 32m

£587

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 7/1

07:55-19:02

2 stops17h 07m

Chicago O'Hare Intl

Wed 14/1

18:30-16:10

2 stops15h 40m

£662

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Best time to book a flight from Belfast Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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 Illinois
No data available for this route at this time. Please check back soon.

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 12 December 2025.
Get a feel of what it's like to fly with British Airways from Belfast Intl Airport to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,571 reviews
Check prices

Overall

6.7

Boarding

6.9

Comfort

6.7

Entertainment

6.4

Food

6.4

Crew

7.6

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
7,571 reviews
British Airways
6.7
Okay
7,571 reviews
Check prices

Overall

6.7

Boarding

6.9

Comfort

6.7

Entertainment

6.4

Food

6.4

Crew

7.6

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 Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

  • How can I find direct flights from Belfast Intl to Illinois?

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl 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.

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 Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Belfast Intl to John F Kennedy Intl flights
Belfast Intl to Newark flights
Belfast Intl to Boston flights
Belfast City to Boston flights
Belfast City to John F Kennedy Intl flights
Belfast Intl to Hobby flights
Belfast City to Newark flights
Belfast City to LaGuardia flights
Belfast Intl to Orlando flights
Belfast Intl to Miami flights
Belfast Intl to O'Hare Intl flights
Belfast Intl to Seattle flights
Belfast Intl to Las Vegas flights
Belfast City to Las Vegas flights
Belfast City to Orlando flights
Belfast City to Miami flights
Belfast City to Seattle flights
Belfast City to George Bush Intcntl flights
Belfast City to Dallas/Fort Worth flights
Belfast Intl to Dallas/Fort Worth flights
Belfast City to O'Hare Intl flights
Belfast Intl to Atlanta flights
Belfast City to Omaha flights
Belfast Intl to Denver flights
Belfast Intl to Fort Lauderdale flights
Belfast Intl to Daytona Beach flights
Belfast Intl to Hartford flights
Belfast Intl to Wichita flights
Belfast Intl to Ontario flights
Belfast Intl to Charlotte flights
Belfast City to Baltimore flights
Belfast Intl to West Palm Beach flights
Belfast Intl to San Francisco flights
Belfast City to Atlanta flights
Belfast Intl to Baltimore flights
Belfast City to Pittsburgh flights

Top airline flying from Belfast Intl to Illinois

Discover the top airline that operate flights from Belfast Intl to Illinois. 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 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£485Average£577FlexibilityNo 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 Illinois?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Illinois from Belfast Intl today with Cheapflights!

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Belfast Intl.

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

Need flexible booking options for your flight to Illinois from Belfast Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Not ready to book yet? You can track prices for flights from Belfast Intl to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.