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$660+ Cheap flights from Belfast to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ORD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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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 September 16, 2025.

Round-trip from

$666
(American Airlines)
From Belfast to Illinois
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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 September 16, 2025.

This Netflights deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:50 amBHD - ORD
1 stop14h 00mBritish Airways
Tue 10/215:40 pmORD - BHD
1 stop10h 55mBritish Airways
Deal found 9/14$660
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:30 amBHD - ORD
1 stop14h 10mDelta
Tue 10/2110:30 amORD - BHD
2 stops24h 25mDelta
Deal found 9/15$671
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:35 pmBFS - ORD
2 stops30h 10mMultiple Airlines
Thu 11/67:20 pmORD - BFS
2 stops21h 00mMultiple Airlines
Deal found 9/15$711
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:30 amBFS - ORD
2 stops16h 50mMultiple Airlines
Wed 11/56:30 pmORD - BFS
2 stops21h 50mMultiple Airlines
Deal found 9/14$786

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Belfast to Illinois that are best for you.

Fly from

Belfast

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 3/5

11:05 am-5:00 pm

1 stop11h 55m

Chicago O'Hare Intl

Mon 3/9

10:45 pm-2:15 pm

1 stop10h 30m

$666

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 10/30

4:35 pm-5:45 pm

2 stops30h 10m

Chicago O'Hare Intl

Thu 11/6

7:20 pm-10:20 pm

2 stops21h 00m

$711

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 10/29

6:30 am-6:20 pm

2 stops16h 50m

Chicago O'Hare Intl

Wed 11/5

6:30 pm-10:20 pm

2 stops21h 50m

$786

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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 round-trip 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.

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?

    There are many flights that can get you from Belfast to Illinois in 11h 55m. Fly via American Airlines to get the fastest option. The distance between Belfast and 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 vacation 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, August is the cheapest month in which you can book a flight from Belfast to Illinois (average of $245). Flying from Belfast to Illinois in March is currently the most expensive (average of $321). 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.

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