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Cheap flights from Belfast to Illinois from £289

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ORD
29 Jun — 6 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Illinois
Explore the most affordable flight options available from Belfast to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 May 2026.

Mon 6/706:40
BFS
-
ORD
3 stops33h 36m
Multiple Airlines
Mon 13/722:25
ORD
-
BFS
2 stops17h 50m
Multiple Airlines
Deal found 29/5£734
Wed 4/1112:25
BHD
-
ORD
1 stop12h 50m
British Airways
Sun 8/1121:45
ORD
-
BHD
1 stop14h 55m
British Airways
Deal found 26/5£745
Fri 26/607:20
BFS
-
ORD
2 stops20h 45m
Multiple Airlines
Sun 5/717:35
ORD
-
BFS
2 stops18h 50m
Multiple Airlines
Deal found 28/5£757
Tue 21/708:20
BFS
-
ORD
2 stops14h 37m
Multiple Airlines
Tue 21/722:25
ORD
-
BFS
2 stops17h 50m
Multiple Airlines
Deal found 27/5£758
Mon 3/806:30
BFS
-
ORD
2 stops16h 27m
Multiple Airlines
Sat 8/819:25
ORD
-
BFS
2 stops21h 15m
Multiple Airlines
Deal found 26/5£759
Wed 1/722:45
BFS
-
ORD
2 stops24h 12m
Multiple Airlines
Wed 8/708:45
ORD
-
BFS
3 stops21h 20m
Multiple Airlines
Deal found 26/5£773
Sun 28/606:45
BFS
-
ORD
3 stops38h 10m
Multiple Airlines
Sun 19/715:45
ORD
-
BFS
2 stops20h 40m
Multiple Airlines
Deal found 30/5£783
Tue 1/909:40
BHD
-
ORD
1 stop14h 35m
British Airways
Sat 5/921:15
ORD
-
BHD
1 stop11h 50m
British Airways
Deal found 28/5£793
Wed 2/906:30
BHD
-
ORD
2 stops16h 29m
British Airways
Sun 6/918:43
ORD
-
BHD
2 stops16h 57m
British Airways
Deal found 28/5£796

Find flight deals from Belfast to Illinois

Keep the following information in mind while searching for Belfast to Illinois flight deals. Data was last updated 30 May 2026.

Round-trip from

£734

One-way from

£289
6/7-13/7
  • 6/7-13/7
  • 5 total stops
  • 51h 26m total
  • Belfast to Illinois
Search Deals
6/10
  • 6/10
  • 3 total stops
  • 31h 10m total
  • Belfast to Illinois
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast 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 30 May 2026.
Use the filters below to find and compare flights from Belfast to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 6/7

06:40-10:16

3 stops33h 36m

Chicago O'Hare Intl

Mon 13/7

22:25-22:15

2 stops17h 50m

£734
Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 4/11

12:25-19:15

1 stop12h 50m

Chicago O'Hare Intl

Sun 8/11

21:45-18:40

1 stop14h 55m

£745

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 26/6

07:20-22:05

2 stops20h 45m

Chicago O'Hare Intl

Sun 5/7

17:35-18:25

2 stops18h 50m

£757

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 21/7

08:20-16:57

2 stops14h 37m

Chicago O'Hare Intl

Tue 21/7

22:25-22:15

2 stops17h 50m

£758

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 28/6

06:45-14:55

3 stops38h 10m

Chicago O'Hare Intl

Sun 19/7

15:45-18:25

2 stops20h 40m

£783

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Wed 2/9

10:05-17:35

1 stop13h 30m

Chicago O'Hare Intl

Sun 6/9

20:40-17:40

1 stop15h 00m

£793

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 1/9

06:30-13:50

1 stop13h 20m

Chicago O'Hare Intl

Sat 5/9

11:53-10:05

2 stops16h 12m

£793

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 22/7

11:30-12:40

2 stops31h 10m

Chicago O'Hare Intl

Sun 2/8

17:10-18:25

1 stop19h 15m

£889

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 24/6

20:15-23:19

2 stops33h 04m

Chicago O'Hare Intl

Sun 5/7

17:10-18:25

1 stop19h 15m

£890

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 28/6

06:25-14:30

2 stops38h 05m

Chicago O'Hare Intl

Sun 5/7

17:10-18:25

1 stop19h 15m

£899

Flights are sorted by cheapest return flights first.

Deals found on 28/5

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Belfast to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Belfast 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 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 30 May 2026.
Read reviews from past customers who have flown with British Airways from Belfast to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,013 reviews
Check prices

Crew

7.7

Comfort

6.8

Entertainment

6.4

Food

6.4

Boarding

6.9

Overall

6.7

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
8,013 reviews
British Airways
6.7
Okay
8,013 reviews
Check prices

Crew

7.7

Comfort

6.8

Entertainment

6.4

Food

6.4

Boarding

6.9

Overall

6.7

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

  • How long is the flight from Belfast to Illinois?

    Airlines like British Airways fly from Belfast to Illinois in about 12h 50m. The time it takes to get you to your destination can typically vary by up to . The distance from Belfast to Illinois is about 3644 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast 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.

See more FAQs

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Alternative routes for Belfast to Illinois

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Top airline flying from Belfast to Illinois

Discover the top airline that operate flights from Belfast 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 30 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£498Average£651FlexibilityNo 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 to Illinois?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast 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 to Illinois?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Belfast to Illinois for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to Illinois from Belfast? 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 to Illinois become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Illinois from Belfast today and book when prices fit your budget.

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