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Cheap flights from Illinois to Belfast from £210

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Illinois to Belfast

Keep the following information in mind while searching for Illinois to Belfast flight deals. Data was last updated 11 July 2025.

Round-trip from

£464

One-way from

£210
American Airlines
  • American Airlines
  • 9/9-16/9
  • 2 total stops
  • 36h 20m total
  • Illinois to Belfast
Search Deals
4/9
  • 4/9
  • 2 total stops
  • 21h 57m total
  • Illinois to Belfast
Search Deals

Find flight deals from Illinois to Belfast

Cheapest flights from Illinois to Belfast
Explore the most affordable flight options available from Illinois to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Tue 9/917:40ORD - BHD
1 stop10h 55mAmerican Airlines
Tue 16/916:25BHD - ORD
1 stop25h 25mAmerican Airlines
Deal found 11/7£464
Sun 24/822:35ORD - BHD
1 stop14h 10mBritish Airways
Mon 1/919:30BHD - ORD
1 stop22h 25mBritish Airways
Deal found 10/7£466
Mon 25/819:25ORD - BFS
2 stops15h 55mMultiple Airlines
Mon 1/906:40BFS - ORD
2 stops17h 35mMultiple Airlines
Deal found 11/7£517
Mon 25/817:40ORD - BHD
2 stops17h 15mKLM
Mon 1/917:25BHD - ORD
1 stop26h 45mKLM
Deal found 11/7£522
Tue 9/919:17MDW - BHD
2 stops15h 38mDelta
Tue 16/906:30BHD - MDW
2 stops18h 05mDelta
Deal found 11/7£532
Thu 4/915:59STL - BHD
2 stops22h 46mBritish Airways
Fri 12/906:35BHD - STL
2 stops20h 31mBritish Airways
Deal found 9/7£560
Mon 25/819:25ORD - BHD
2 stops19h 00mMultiple Airlines
Mon 1/907:05BHD - ORD
2 stops20h 10mMultiple Airlines
Deal found 11/7£564
Fri 3/1016:15ORD - BHD
1 stop23h 00mDelta
Tue 7/1006:30BHD - ORD
1 stop13h 40mDelta
Deal found 9/7£565
Thu 4/914:30STL - BFS
3 stops20h 10mMultiple Airlines
Fri 12/906:05BFS - STL
2 stops19h 52mMultiple Airlines
Deal found 9/7£705
Wed 13/818:42MDW - BHD
2 stops16h 13mKLM
Sun 24/806:30BHD - MDW
2 stops17h 07mKLM
Deal found 10/7£940
Mon 14/717:23STL - BHD
2 stops21h 52mDelta
Mon 21/706:30BHD - STL
2 stops20h 06mDelta
Deal found 9/7£1,439
Mon 14/717:37STL - BHD
2 stops21h 38mKLM
Mon 21/717:25BHD - STL
2 stops29h 22mKLM
Deal found 11/7£1,584

Cheapflights Fare Finder

Customise your flight search to find flights from Illinois to Belfast 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 11 July 2025.
Use the filters below to find and compare flights from Illinois to Belfast that are best for you.

Fly from

Illinois

Fly to

Belfast

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 9/9

17:40-10:35

1 stop10h 55m

Belfast City

Tue 16/9

16:25-11:50

1 stop25h 25m

£464

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 24/8

22:35-18:45

1 stop14h 10m

Belfast City

Mon 1/9

19:30-11:55

1 stop22h 25m

£466

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 25/8

19:25-17:20

2 stops15h 55m

Belfast Intl

Mon 1/9

06:40-18:15

2 stops17h 35m

£517

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 25/8

17:40-16:55

2 stops17h 15m

Belfast City

Mon 1/9

17:25-14:10

1 stop26h 45m

£522

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Tue 9/9

19:17-16:55

2 stops15h 38m

Belfast City

Tue 16/9

06:30-18:35

2 stops18h 05m

£532

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Thu 4/9

15:59-20:45

2 stops22h 46m

Belfast City

Fri 12/9

06:35-21:06

2 stops20h 31m

£560

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 25/8

19:25-20:25

2 stops19h 00m

Belfast City

Mon 1/9

07:05-21:15

2 stops20h 10m

£564

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/10

16:15-21:15

1 stop23h 00m

Belfast City

Tue 7/10

06:30-14:10

1 stop13h 40m

£565

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Thu 4/9

14:30-16:40

3 stops20h 10m

Belfast Intl

Fri 12/9

06:05-19:57

2 stops19h 52m

£705

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 13/8

18:42-16:55

2 stops16h 13m

Belfast City

Sun 24/8

06:30-17:37

2 stops17h 07m

£940

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 19 results
1
2

Best time to book a flight from Illinois to Belfast

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

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated 11 July 2025.
Read through reviews of airlines operating flights from Illinois to Belfast, such as Delta, KLM, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.6
Okay
7,109 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Illinois to Belfast. 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 Illinois to Belfast one-way?

    £280 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on British Airways and Delta, with prices starting from £289 and £319, respectively.

  • What are the most popular routes from Illinois to Belfast?

    The most popular route from Illinois to Belfast is Chicago O'Hare Intl - Belfast City. You may also consider Chicago O'Hare Intl - Belfast Intl or Chicago Midway - Belfast Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Belfast 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 Illinois to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Belfast (average of £67). Flying from Illinois to Belfast in July is currently the most expensive (average of £90). 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

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

Cheapflights helps you find that perfect flight to Belfast from Illinois by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

Yes! Start tracking prices for Illinois to Belfast flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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