How long is the flight from Belfast to Chicago O'Hare Intl Airport?

Departing from Belfast to Chicago O'Hare Intl Airport will take you 16h 51m. There are 3644 mi between Belfast and Chicago O'Hare Intl Airport.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare 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 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).

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

When flying from Belfast to Chicago O'Hare 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 Belfast to O'Hare Intl that include hotel bookings?

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

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

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

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

Yes. Cheapflights offers flight deals from Belfast to O'Hare 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.

£398+ Cheap Flights from Belfast to Chicago O'Hare Intl Airport

Cheap flight deals from Belfast to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest

Best

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Cheapest flights from Belfast to O'Hare Intl
Explore the most affordable flight options available from Belfast to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Thu 3/1207:40 -

1 stop17h 05m

Mon 7/1221:50 -

1 stop10h 25m

Deal found 1/9£624

Thu 10/906:30 -

1 stop13h 20m

Mon 14/922:25 -

1 stop14h 20m

Deal found 31/8£641

Thu 1/1009:35 -

1 stop12h 20m

Tue 6/1021:15 -

1 stop12h 05m

Deal found 31/8£644

Fri 2/1021:10 -

2 stops25h 43m

Sun 4/1022:25 -

2 stops16h 35m

Deal found 1/9£657

Fri 2/1009:35 -

2 stops18h 29m

Sun 4/1017:00 -

1 stop11h 30m

Deal found 1/9£658

Thu 1/1011:05 -

2 stops35h 05m

Tue 6/1019:15 -

2 stops19h 50m

Deal found 31/8£662

Wed 4/1111:40 -

1 stop13h 50m

Sun 8/1116:50 -

2 stops15h 00m

Deal found 2/9£674

Thu 10/908:20 -

2 stops16h 55m

Mon 14/921:00 -

2 stops17h 40m

Deal found 31/8£719

Sun 18/1014:40 -

2 stops27h 55m

Sun 25/1019:30 -

2 stops21h 10m

Deal found 3/9£755

Thu 1/1008:20 -

2 stops15h 55m

Mon 5/1019:25 -

2 stops14h 50m

Deal found 1/9£757

Find flight deals from Belfast to O'Hare Intl

Round-trip from	£624
One-way from	£398

British Airways
3/12-7/12
2 total stops
27h 30m total
Belfast to Chicago

Search Deals

3/10-31/12
2 total stops
18h 53m total
Belfast to Chicago

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sat 3/10

06:55-19:48

2 stops18h 53m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£398

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sat 3/10

07:00-19:48

2 stops18h 48m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£409

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Thu 3/12

08:50-19:41

2 stops16h 51m

Chicago O'Hare Intl

Mon 7/12

15:16-14:15

2 stops16h 59m

£653

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Thu 5/11

07:40-15:30

1 stop13h 50m

Chicago O'Hare Intl

Mon 9/11

18:49-16:05

2 stops15h 16m

£674

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Wed 4/11

11:40-19:30

1 stop13h 50m

Chicago O'Hare Intl

Sun 8/11

16:50-13:50

2 stops15h 00m

£674

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Fri 2/10

21:10-16:53

2 stops25h 43m

Chicago O'Hare Intl

Sun 4/10

22:25-23:35

3 stops19h 10m

£679

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Sun 18/10

14:40-12:35

2 stops27h 55m

Chicago O'Hare Intl

Sun 25/10

19:30-21:40

2 stops21h 10m

£755

Fastest return journey

BelfastChicago

BHD Belfast City - ORD Chicago O'Hare Intl

BHDORD

Belfast City

Sat 3/10

07:05-13:50

1 stop12h 45m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£766

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Thu 1/10

08:15-19:50

2 stops17h 35m

Chicago O'Hare Intl

Mon 5/10

19:25-23:20

3 stops21h 55m

£859

Flights are sorted by cheapest return flights first.

Deals found on 3/9

Sorted by cheapest first

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

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

BF1-ORD

BFS-ORD

BHD-ORD

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 Belfast to Chicago O'Hare Intl Airport

BF1-ORD

BFS-ORD

BHD-ORD

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Belfast to Chicago O'Hare Intl Airport?
Departing from Belfast to Chicago O'Hare Intl Airport will take you 16h 51m. There are 3644 mi between Belfast and Chicago O'Hare Intl Airport.
Can I find deals for flights from Belfast to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on Belfast to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to O'Hare Intl.
Can I find deals for business class flights from Belfast to O'Hare Intl?
Yes. Cheapflights offers flight deals from Belfast to O'Hare 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 Belfast to Chicago O'Hare Intl Airport from £398

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to O'Hare Intl

Cheapest flights from Belfast to O'Hare IntlExplore the most affordable flight options available from Belfast to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Explore the most affordable flight options available from Belfast to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Best flights from Belfast to O'Hare IntlDiscover carefully curated flight deals from Belfast to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Discover carefully curated flight deals from Belfast to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from Belfast to O'Hare IntlDiscover last-minute flight deals from Belfast to O'Hare Intl. Data last updated 5 September 2026 and is based on user searches.

Discover last-minute flight deals from Belfast to O'Hare Intl. Data last updated 5 September 2026 and is based on user searches.

One-way flights from Belfast to O'Hare IntlSearch for one-way flight options from Belfast to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Search for one-way flight options from Belfast to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

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

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Related info for your journey

How long is the flight from Belfast to Chicago O'Hare Intl Airport?

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

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

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

Travelling to a place near Chicago O'Hare Intl Airport?

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Alternative routes for Belfast to O'Hare Intl

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Direct flights to Illinois

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Cheapest flights from Belfast to O'Hare Intl
Explore the most affordable flight options available from Belfast to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Best flights from Belfast to O'Hare Intl
Discover carefully curated flight deals from Belfast to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from Belfast to O'Hare Intl
Discover last-minute flight deals from Belfast to O'Hare Intl. Data last updated 5 September 2026 and is based on user searches.

One-way flights from Belfast to O'Hare Intl
Search for one-way flight options from Belfast to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.