What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Belfast Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Belfast Intl Airport (average of £67). Flying from Chicago O'Hare Intl Airport to Belfast Intl Airport in July is currently the most expensive (average of £90). 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.

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.

£273+ Cheap Flights from Chicago O'Hare Intl Airport to Belfast Intl Airport

Cheap flight deals from O'Hare Intl to Belfast Intl

Round-trip from	£491
One-way from	£273
Popular in	June
Cheapest in	February
Average price	£578

10/10-17/10
4 total stops
37h 00m total
Chicago to Belfast

Search Deals

9/1
3 total stops
36h 30m total
Chicago to Belfast

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£46 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from O'Hare Intl to Belfast Intl

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 28 August 2025.

Fri 10/1022:15ORD - BFS

2 stops15h 50mMultiple Airlines

Fri 17/1006:05BFS - ORD

2 stops21h 10mMultiple Airlines

Deal found 26/8£491

Mon 20/1010:27ORD - BFS

3 stops27h 58mMultiple Airlines

Fri 24/1007:35BFS - ORD

3 stops38h 55mMultiple Airlines

Deal found 27/8£535

Thu 9/1021:15ORD - BFS

2 stops18h 25mMultiple Airlines

Thu 16/1007:10BFS - ORD

2 stops17h 50mMultiple Airlines

Deal found 26/8£590

Sat 4/1009:55ORD - BFS

3 stops19h 05mMultiple Airlines

Fri 10/1006:35BFS - ORD

3 stops31h 43mMultiple Airlines

Deal found 25/8£662

Wed 15/1006:00ORD - BFS

2 stops32h 35mMultiple Airlines

Sun 26/1006:00BFS - ORD

3 stops32h 22mMultiple Airlines

Deal found 27/8£721

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 28 August 2025.

Fri 10/1022:15ORD - BFS

2 stops15h 50mMultiple Airlines

Fri 17/1006:05BFS - ORD

2 stops21h 10mMultiple Airlines

Deal found 26/8£491

Mon 20/1010:27ORD - BFS

3 stops27h 58mMultiple Airlines

Fri 24/1007:35BFS - ORD

3 stops38h 55mMultiple Airlines

Deal found 27/8£535

Thu 9/1021:15ORD - BFS

2 stops18h 25mMultiple Airlines

Thu 16/1007:10BFS - ORD

2 stops17h 50mMultiple Airlines

Deal found 26/8£590

Sat 4/1009:55ORD - BFS

3 stops19h 05mMultiple Airlines

Fri 10/1006:35BFS - ORD

3 stops31h 43mMultiple Airlines

Deal found 25/8£662

Wed 15/1006:00ORD - BFS

2 stops32h 35mMultiple Airlines

Sun 26/1006:00BFS - ORD

3 stops32h 22mMultiple Airlines

Deal found 27/8£721

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 28 August 2025 and is based on user searches.

Wed 10/915:45ORD - BFS

2 stops17h 45mMultiple Airlines

Fri 12/909:50BFS - ORD

2 stops29h 50mMultiple Airlines

Deal found 26/8£904

Thu 18/922:15ORD - BFS

2 stops18h 55mMultiple Airlines

Thu 25/916:00BFS - ORD

3 stops30h 30mMultiple Airlines

Deal found 27/8£763

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 10/10

22:15-20:05

2 stops15h 50m

Belfast Intl

Fri 17/10

06:05-21:15

2 stops21h 10m

£491

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 20/10

10:27-20:25

3 stops27h 58m

Belfast Intl

Fri 24/10

07:35-16:30

3 stops38h 55m

£535

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 9/10

21:15-21:40

2 stops18h 25m

Belfast Intl

Thu 16/10

07:10-19:00

2 stops17h 50m

£590

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 4/10

09:55-11:00

3 stops19h 05m

Belfast Intl

Fri 10/10

06:35-08:18

3 stops31h 43m

£662

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 15/10

06:00-20:35

2 stops32h 35m

Belfast Intl

Sun 26/10

06:00-09:22

3 stops32h 22m

£721

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 9/1

20:15-14:45

3 stops36h 30m

£273

Flights are sorted by cheapest return flights first.

Deals found on 27/8

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.

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.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Belfast Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Belfast Intl Airport (average of £67). Flying from Chicago O'Hare Intl Airport to Belfast Intl Airport in July is currently the most expensive (average of £90). 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

Armagh

Newry

Ballymena

Cookstown

Dungannon

Browse thousands of different options on Cheapflights for your next trip

Other flights to Belfast Intl

Manchester to Belfast Intl flights

Edinburgh to Belfast Intl flights

Glasgow Intl to Belfast Intl flights

Liverpool to Belfast Intl flights

Stansted to Belfast Intl flights

Luton to Belfast Intl flights

Belfast Intl Airport to Liverpool flights

Belfast Intl Airport to Southampton flights

Belfast Intl Airport to Manchester flights

Belfast Intl Airport to London Gatwick Airport flights

Belfast Intl Airport to Edinburgh flights

Belfast Intl Airport to London Stansted Airport flights

Belfast Intl Airport to Paris Beauvais-Tille Airport flights

Belfast Intl Airport to London Stansted Airport flights

Belfast Intl Airport to London Luton Airport flights

Belfast Intl Airport to Birmingham flights

Belfast Intl Airport to Edinburgh flights

Belfast Intl Airport to Palma de Mallorca flights

Belfast Intl Airport to Liverpool flights

Belfast Intl Airport to Glasgow Intl Airport flights

Belfast Intl Airport to Málaga flights

Belfast Intl Airport to Alicante flights

Belfast Intl Airport to London Luton Airport flights

Fly with Cheapflights

How does Cheapflights help users find flights from O'Hare Intl to Belfast Intl?

Cheapflights makes it easy to find O'Hare Intl to Belfast Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast Intl from O'Hare Intl.

Can Cheapflights find flights from O'Hare Intl to Belfast Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl to Belfast Intl flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from O'Hare Intl to Belfast Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Chicago O'Hare Intl Airport to Belfast Intl Airport from £273

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 9/1. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 28 August 2025.

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 28 August 2025.

Cheapflights Fare Finder

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

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.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Belfast Intl. 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 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?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Belfast Intl Airport?

Travelling to a place near Belfast Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 28 August 2025.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from O'Hare Intl to Belfast Intl?

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

Can Cheapflights find flights from O'Hare Intl to Belfast Intl with no change fees?

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

100% Free

Book with Flexibility

Travel Smart

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 28 August 2025.