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Cheap flights from Northern Ireland to Chicago from £643

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
7 Jul — 14 Jul1
1 adult

Cheap flight deals from Northern Ireland to Chicago

Keep the following information in mind while searching for Northern Ireland to Chicago flight deals. Data was last updated 2 July 2025.

Round-trip from

£643

Popular in

August

Cheapest in

September

Average price

£611
14/8-21/8
  • 14/8-21/8
  • 4 total stops
  • 41h 59m total
  • Northern Ireland to Chicago
Highest demand for flights based on searches. 1% potential increase in price (£9 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Northern Ireland to Chicago

Cheapest flights from Northern Ireland to Chicago
Explore the most affordable flight options available from Northern Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2025.

Thu 14/822:45BFS - ORD
2 stops26h 44mMultiple Airlines
Thu 21/819:25ORD - BFS
2 stops15h 15mMultiple Airlines
Deal found 30/6£643

Cheapflights Fare Finder

Customise your flight search to find flights from Northern Ireland to Chicago 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 2 July 2025.
Use the filters below to find and compare flights from Northern Ireland to Chicago that are best for you.

Fly from

Northern Ireland

Fly to

Chicago

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 14/8

22:45-19:29

2 stops26h 44m

Chicago O'Hare Intl

Thu 21/8

19:25-16:40

2 stops15h 15m

£643

Flights are sorted by cheapest return flights first.

Deals found on 30/6

Best time to book a flight from Northern Ireland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Northern Ireland 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 Northern Ireland to Chicago
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 Northern Ireland to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find deals for flights from Northern Ireland to Chicago that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Chicago?

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

  • Can I find deals for business class flights from Northern Ireland to Chicago?

    Yes. Cheapflights offers flight deals from Northern Ireland to Chicago 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 Northern Ireland to Chicago?

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

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Alternative routes for Northern Ireland to Chicago

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

Top airline flying from Northern Ireland to Chicago

Discover the top airline that operate flights from Northern Ireland to Chicago. 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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£473Average£611FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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Can Cheapflights find flights from Northern Ireland to Chicago with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Northern Ireland to Chicago flexibly with Cheapflights today.

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