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Cheap flights from Illinois to Belfast City Airport from £301

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
5 May — 12 May1
1 adult

Cheap flight deals from Illinois to Belfast City

Keep the following information in mind while searching for Illinois to Belfast City flight deals. Data was last updated 30 April 2025.

Round-trip from

£477

One-way from

£301

Popular in

May

Cheapest in

September

Average price

£1,004
American Airlines
  • American Airlines
  • 21/8-4/9
  • 2 total stops
  • 27h 35m total
  • Illinois to Belfast
Search Deals
British Airways
  • British Airways
  • 20/8
  • 2 total stops
  • 19h 25m total
  • Illinois to Belfast
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£189 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Illinois to Belfast City

Cheapest flights from Illinois to Belfast City
Explore the most affordable flight options available from Illinois to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Mon 5/517:40ORD - BHD
1 stop13h 15mAmerican Airlines
Tue 13/506:35BHD - ORD
1 stop14h 05mAmerican Airlines
Deal found 29/4£445
Thu 21/821:15ORD - BHD
1 stop12h 15mBritish Airways
Thu 4/909:35BHD - ORD
1 stop12h 20mBritish Airways
Deal found 29/4£536
Tue 6/518:15ORD - BHD
2 stops20h 50mKLM
Tue 13/506:30BHD - ORD
2 stops18h 07mKLM
Deal found 29/4£540
Tue 6/517:05ORD - BHD
2 stops22h 00mDelta
Tue 13/506:30BHD - ORD
2 stops16h 59mDelta
Deal found 29/4£543
Wed 30/415:45ORD - BHD
2 stops14h 55mAer Lingus
Sat 10/509:50BHD - ORD
2 stops15h 10mAer Lingus
Deal found 30/4£715
Sat 14/610:00ORD - BHD
3 stops29h 10mMultiple Airlines
Sat 21/606:55BHD - ORD
3 stops32h 14mMultiple Airlines
Deal found 30/4£730
Wed 13/813:00MDW - BHD
2 stops21h 55mDelta
Sun 24/806:30BHD - MDW
2 stops17h 33mDelta
Deal found 29/4£776
Tue 15/713:16STL - BHD
2 stops17h 44mBritish Airways
Mon 21/719:30BHD - STL
2 stops30h 54mBritish Airways
Deal found 29/4£820
Sat 14/609:40MDW - BHD
3 stops22h 05mMultiple Airlines
Sat 21/607:00BHD - MDW
3 stops31h 45mMultiple Airlines
Deal found 30/4£900
Tue 15/708:26STL - BHD
3 stops22h 24mAer Lingus
Mon 21/707:00BHD - STL
3 stops30h 56mAer Lingus
Deal found 29/4£1,163
Tue 15/709:15STL - BHD
2 stops29h 55mMultiple Airlines
Mon 21/707:00BHD - STL
3 stops21h 45mMultiple Airlines
Deal found 29/4£1,185
Sat 14/619:21MDW - BHD
2 stops15h 34mKLM
Sat 21/606:30BHD - MDW
2 stops18h 11mKLM
Deal found 30/4£1,756

Cheapflights Fare Finder

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

Fly from

Illinois

Fly to

Belfast City

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 21/8

17:00-13:15

1 stop14h 15m

Belfast City

Thu 4/9

06:35-13:55

1 stop13h 20m

£477

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 21/8

21:15-15:30

1 stop12h 15m

Belfast City

Thu 4/9

09:35-15:55

1 stop12h 20m

£536

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 14/6

10:00-21:10

3 stops29h 10m

Belfast City

Sat 21/6

06:55-09:09

3 stops32h 14m

£730

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 13/8

13:00-16:55

2 stops21h 55m

Belfast City

Sun 24/8

06:30-18:03

2 stops17h 33m

£776

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 15/7

13:16-13:00

2 stops17h 44m

Belfast City

Mon 21/7

19:30-20:24

2 stops30h 54m

£820

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 22/6

21:15-17:45

2 stops14h 30m

Belfast City

Sat 5/7

07:00-19:00

2 stops18h 00m

£877

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 14/6

09:40-13:45

3 stops22h 05m

Belfast City

Sat 21/6

07:00-08:45

3 stops31h 45m

£900

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 14/6

17:39-16:55

2 stops17h 16m

Belfast City

Sat 21/6

06:30-17:46

2 stops17h 16m

£963

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 15/7

08:26-12:50

3 stops22h 24m

Belfast City

Mon 21/7

07:00-07:56

3 stops30h 56m

£1,163

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 15/7

09:15-21:10

2 stops29h 55m

Belfast City

Mon 21/7

07:00-22:45

3 stops21h 45m

£1,185

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 18 results
1
2

Best time to book a flight from Illinois to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City 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 City Airport

Rainfall in Belfast City by month

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

In terms of precipitation, rainfall in Belfast City Airport ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast City Airport when rainfall is around 50.0 mm.

Temperature in Belfast City by month

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

If weather is an important factor for your trip to Belfast City Airport, 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 16.0 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 Belfast City

Get insights into the airlines that provide service to Belfast City. 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 City. Reviews last updated 30 April 2025.
See what other customers who have flown with Delta, KLM and Finnair from Illinois to Belfast have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,936 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £301. Delta flights start at £324 while deals on Finnair start at £2,888 one-way.

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

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

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Illinois to Belfast City Airport (average of £98). Flying from Illinois to Belfast City Airport in December is currently the most expensive (average of £116). 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

Travelling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Newcastle
Carrickfergus
Bangor

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Alternative routes for Illinois to Belfast City

See prices for flight routes from nearby airports that may be better suited for you.
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Why should you use Cheapflights to find cheap flight tickets from Illinois to Belfast City?

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

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

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

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