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Cheap flights from Belfast to Illinois from £393

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ORD
28 Feb — 7 Mar1
1 adult

Cheap flight deals from Belfast to Illinois

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

Round-trip from

£690

One-way from

£393

Popular in

March

Cheapest in

September
7/4-14/4
  • 7/4-14/4
  • 4 total stops
  • 52h 30m total
  • Belfast to Illinois
Search Deals
24/6
  • 24/6
  • 3 total stops
  • 37h 10m total
  • Belfast to Illinois
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£236 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£45 potential savings vs. average return price).
Search Deals

Find flight deals from Belfast to Illinois

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 23 February 2025.

Sun 2/306:30BHD - ORD
1 stop14h 00mVirgin Atlantic
Sun 9/317:25ORD - BHD
1 stop22h 35mVirgin Atlantic
Deal found 22/2£518
Sun 2/306:30BHD - ORD
2 stops17h 55mDelta
Sun 9/317:25ORD - BHD
1 stop22h 35mDelta
Deal found 22/2£523
Sun 2/306:30BHD - ORD
2 stops17h 24mAmerican Airlines
Sun 9/318:30ORD - BHD
2 stops14h 25mAmerican Airlines
Deal found 22/2£537
Mon 27/1019:30BHD - ORD
1 stop24h 25mMultiple Airlines
Mon 3/1122:00ORD - BHD
1 stop14h 35mMultiple Airlines
Deal found 22/2£575
Tue 28/1017:20BHD - ORD
1 stop27h 10mKLM
Mon 3/1117:20ORD - BHD
2 stops17h 30mKLM
Deal found 22/2£615
Fri 31/1006:45BHD - ORD
2 stops18h 00mBritish Airways
Mon 3/1116:34ORD - BHD
2 stops15h 36mBritish Airways
Deal found 22/2£634
Thu 27/206:40BHD - ORD
2 stops42h 35mAer Lingus
Sun 9/320:40ORD - BHD
2 stops11h 55mAer Lingus
Deal found 22/2£675
Mon 7/417:30BFS - ORD
2 stops31h 30mMultiple Airlines
Mon 14/420:50ORD - BFS
2 stops21h 00mMultiple Airlines
Deal found 22/2£690
Thu 27/215:05BHD - ORD
1 stop31h 55mIberia
Sun 9/318:30ORD - BHD
2 stops38h 40mIberia
Deal found 22/2£958

Find flights from Belfast to Illinois within your budget

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 23 February 2025.

Fly from

Belfast

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 7/4

17:30-19:00

2 stops31h 30m

Chicago O'Hare Intl

Mon 14/4

20:50-23:50

2 stops21h 00m

£690

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 24/6

09:00-16:10

3 stops37h 10m

£393

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 24/6

09:50-19:00

2 stops15h 10m

£564

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 24/6

16:25-11:55

1 stop25h 30m

£615

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 20/5

18:00-15:10

3 stops51h 10m

£919

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 16/5

06:30-14:10

1 stop13h 40m

£1,279

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 20/5

06:35-18:15

1 stop17h 40m

£1,541

Flights are sorted by cheapest return flights first.

Deals found on 22/2

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.

Travel insights for flights from Belfast to Illinois

Get recent, data-driven insights about flights from Belfast to Illinois including ideal travel times, pricing trends, and more.

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 February 2025.
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,332 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Finnair
7.6
Good
1,271 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Aer Lingus
7.0
Good
1,071 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

British Airways
6.6
Okay
6,761 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Crew

8.4

Entertainment

7.2

Comfort

7.7

Food

7.3

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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.

  • What are the cheapest airlines to fly from Belfast to Illinois one-way?

    £564 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Finnair and KLM, with prices starting from £615 and £1,279, respectively.

  • 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.

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

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

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Alternative routes for Belfast to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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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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