In terms of precipitation, rainfall in Belfast Intl 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 Intl Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast Intl 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).

What is the cheapest time of day to fly from ORD to BFS?

When flying from Chicago O'Hare Intl Airport to Belfast Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from O'Hare Intl to Belfast Intl that include hotel bookings?

Yes. In addition to deals on O'Hare Intl to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from O'Hare Intl to Belfast Intl?

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

Can I find deals for business class flights from O'Hare Intl to Belfast Intl?

Yes. Cheapflights offers flight deals from O'Hare Intl to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£599+ Cheap Flights from Chicago O'Hare Intl Airport to Belfast Intl Airport

Cheap flight deals from O'Hare Intl to Belfast Intl

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Cheapest flights from O'Hare Intl to Belfast Intl
Explore the most affordable flight options available from O'Hare Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Sun 13/919:25 -

2 stops20h 25m

Tue 29/907:35 -

3 stops38h 25m

Deal found 17/8£599

Wed 30/919:25 -

2 stops19h 45m

Wed 7/1009:35 -

2 stops33h 05m

Deal found 16/8£603

Find flight deals from O'Hare Intl to Belfast Intl

Round-trip from	£599

13/9-29/9
5 total stops
58h 50m total
Chicago to Belfast

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Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Belfast Intl Airport that are best for you.

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Cheapest return flight

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 13/9

19:25-21:50

2 stops20h 25m

Belfast Intl

Tue 29/9

07:35-16:00

3 stops38h 25m

£599

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Wed 30/9

19:25-21:10

2 stops19h 45m

Belfast Intl

Wed 7/10

09:35-12:40

2 stops33h 05m

£612

Fastest return journey

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 4/10

19:25-21:50

2 stops20h 25m

Belfast Intl

Sun 11/10

07:10-21:25

2 stops20h 15m

£659

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 14/9

19:25-16:15

2 stops14h 50m

Belfast Intl

Tue 29/9

06:40-16:00

3 stops39h 20m

£685

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sat 12/9

15:45-22:40

3 stops24h 55m

Belfast Intl

Fri 18/9

20:15-19:48

2 stops29h 33m

£745

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Sorted by cheapest first

Best time to book a flight from O'Hare Intl to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from O'Hare Intl with our price prediction graph.

ORD-BFS

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.

Related info for your journey

Can I find deals for flights from O'Hare Intl to Belfast Intl that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Belfast Intl.
Can I find deals for business class flights from O'Hare Intl to Belfast Intl?
Yes. Cheapflights offers flight deals from O'Hare Intl to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheap flights from Chicago O'Hare Intl Airport to Belfast Intl Airport from £599

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from O'Hare Intl to Belfast Intl

Cheapest flights from O'Hare Intl to Belfast IntlExplore the most affordable flight options available from O'Hare Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Explore the most affordable flight options available from O'Hare Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from O'Hare Intl to Belfast IntlDiscover carefully curated flight deals from O'Hare Intl to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from O'Hare Intl to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from O'Hare Intl to Belfast IntlDiscover last-minute flight deals from O'Hare Intl to Belfast Intl. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from O'Hare Intl to Belfast Intl. Data last updated 21 August 2026 and is based on user searches.

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Best time to book a flight from O'Hare Intl to Belfast Intl

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Related info for your journey

Can I find deals for flights from O'Hare Intl to Belfast Intl that include hotel bookings?

How can I find direct flights from O'Hare Intl to Belfast Intl?

Can I find deals for business class flights from O'Hare Intl to Belfast Intl?

Travelling to a place near Belfast Intl Airport?

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Other flights to Belfast Intl

Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 21 August 2026.

Complete your trip

Complete your trip to Belfast Intl by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from O'Hare Intl to Belfast Intl by cabin class

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O'Hare Intl and Belfast Intl flights

Browse other O'Hare Intl and Belfast Intl flight options. Last updated on 21 August 2026.

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Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Belfast Intl?

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Can Cheapflights notify me if prices for flights from O'Hare Intl to Belfast Intl become cheaper?

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Cheapest flights from O'Hare Intl to Belfast Intl
Explore the most affordable flight options available from O'Hare Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from O'Hare Intl to Belfast Intl
Discover carefully curated flight deals from O'Hare Intl to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from O'Hare Intl to Belfast Intl
Discover last-minute flight deals from O'Hare Intl to Belfast Intl. Data last updated 21 August 2026 and is based on user searches.