How long is the flight from Chicago to Belfast?

Departing from Chicago to Belfast will take you 15h 54m. There are 3647 mi between Chicago and Belfast. This flight may include one or multiple stops.

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

If weather is an important factor for your trip to Belfast, 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 are the most popular routes from Chicago to Belfast?

The most popular route from Chicago to Belfast is Chicago O'Hare Intl - Belfast Intl. You may also consider Chicago O'Hare Intl - Belfast City or Chicago Midway - Belfast City.

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

When flying from Chicago to Belfast, 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 Chicago to Belfast that include hotel bookings?

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

How can I find direct flights from Chicago to Belfast?

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

Can I find deals for business class flights from Chicago to Belfast?

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

£339+ Cheap Flights from Chicago to Belfast

Cheap flight deals from Chicago to Belfast

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Chicago to Belfast
Explore the most affordable flight options available from Chicago to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Mon 5/1016:50 -

1 stop10h 30m

Mon 12/1008:45 -

2 stops16h 30m

Deal found 21/8£548

Mon 5/1019:25 -

3 stops42h 25m

Mon 12/1012:45 -

3 stops36h 30m

Deal found 21/8£590

Tue 6/1019:25 -

2 stops18h 15m

Tue 13/1010:30 -

2 stops13h 45m

Deal found 22/8£648

Sun 4/1019:25 -

2 stops20h 25m

Sun 11/1007:10 -

2 stops20h 15m

Deal found 20/8£658

Mon 14/919:25 -

2 stops14h 50m

Tue 29/906:40 -

3 stops39h 20m

Deal found 18/8£684

Mon 5/1016:50 -

1 stop10h 30m

Mon 12/1017:30 -

1 stop26h 45m

Deal found 21/8£689

Fri 9/1022:25 -

2 stops16h 05m

Tue 20/1007:50 -

3 stops41h 25m

Deal found 18/8£692

Fri 9/1019:05 -

1 stop17h 05m

Tue 20/1006:30 -

1 stop17h 45m

Deal found 18/8£723

Fri 9/1020:50 -

1 stop15h 20m

Tue 20/1006:30 -

2 stops17h 06m

Deal found 18/8£733

Fri 2/1020:50 -

1 stop15h 20m

Fri 9/1011:00 -

2 stops16h 05m

Deal found 18/8£738

Fri 2/1021:15 -

1 stop14h 55m

Fri 9/1006:30 -

1 stop17h 45m

Deal found 18/8£753

Mon 5/1019:01 -

2 stops15h 54m

Mon 12/1009:50 -

2 stops18h 43m

Deal found 21/8£788

Best flights from Chicago to Belfast
Discover carefully curated flight deals from Chicago to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Mon 5/1019:25 -

3 stops42h 25m

Mon 12/1012:45 -

3 stops36h 30m

Deal found 21/8£590

Fri 9/1019:05 -

1 stop17h 05m

Tue 20/1006:30 -

1 stop17h 45m

Deal found 18/8£723

Mon 5/1019:01 -

2 stops15h 54m

Mon 12/1009:50 -

2 stops18h 43m

Deal found 21/8£788

Tue 6/1019:25 -

2 stops18h 15m

Tue 13/1010:30 -

2 stops13h 45m

Deal found 22/8£648

Sun 4/1019:25 -

2 stops20h 25m

Sun 11/1007:10 -

2 stops20h 15m

Deal found 20/8£658

Fri 2/1021:15 -

1 stop14h 55m

Fri 9/1006:30 -

1 stop17h 45m

Deal found 18/8£753

Fri 2/1012:35 -

2 stops22h 20m

Fri 9/1009:50 -

2 stops18h 43m

Deal found 18/8£1,559

Mon 14/919:25 -

2 stops14h 50m

Tue 29/906:40 -

3 stops39h 20m

Deal found 18/8£684

Sun 3/117:10 -

1 stop11h 35m

Sat 3/707:05 -

1 stop12h 45m

Deal found 18/8£811

Fri 20/1111:36 -

3 stops20h 39m

Sun 29/1121:15 -

3 stops27h 10m

Deal found 21/8£821

Sun 3/118:30 -

2 stops14h 30m

Sat 3/706:50 -

3 stops39h 10m

Deal found 18/8£839

Sun 11/1017:00 -

1 stop11h 30m

Wed 14/1006:30 -

1 stop15h 25m

Deal found 20/8£1,089

Sun 15/1117:10 -

1 stop11h 35m

Thu 19/1107:40 -

1 stop12h 05m

Deal found 19/8£1,090

Sun 15/1117:10 -

1 stop14h 40m

Wed 18/1109:15 -

2 stops15h 10m

Deal found 20/8£1,235

Fri 20/1113:22 -

2 stops13h 48m

Sun 29/1117:15 -

2 stops28h 59m

Deal found 21/8£2,117

Sun 3/109:30 -

2 stops17h 40m

Sat 3/709:55 -

2 stops18h 15m

Deal found 18/8£2,725

Sat 26/1209:30 -

2 stops17h 40m

Thu 31/1209:40 -

2 stops18h 42m

Deal found 22/8£2,560

Find flight deals from Chicago to Belfast

Round-trip from	£548
One-way from	£339

5/10-12/10
3 total stops
27h 00m total
Chicago to Belfast

Search Deals

Aer Lingus
8/9
2 total stops
17h 55m total
Chicago to Belfast

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 5/10

19:25-19:50

3 stops42h 25m

Belfast Intl

Mon 12/10

12:45-19:15

3 stops36h 30m

£590

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 6/10

19:25-19:40

2 stops18h 15m

Belfast Intl

Tue 13/10

10:30-18:15

2 stops13h 45m

£648

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

£658

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

£684

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Fri 9/10

19:05-18:10

1 stop17h 05m

Belfast City

Tue 20/10

06:30-18:15

1 stop17h 45m

£723

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Fri 2/10

21:15-18:10

1 stop14h 55m

Belfast City

Fri 9/10

06:30-18:15

1 stop17h 45m

£753

ChicagoBelfast

MDW Chicago Midway - BHD Belfast City

MDWBHD

Chicago Midway

Mon 5/10

19:01-16:55

2 stops15h 54m

Belfast City

Mon 12/10

09:50-22:33

2 stops18h 43m

£788

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 3/1

17:10-10:45

1 stop11h 35m

Belfast City

Sat 3/7

07:05-13:50

1 stop12h 45m

£811

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Fri 20/11

11:36-14:15

3 stops20h 39m

Belfast Intl

Sun 29/11

21:15-18:25

3 stops27h 10m

£821

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 3/1

18:30-15:00

2 stops14h 30m

Belfast City

Sat 3/7

06:50-16:00

3 stops39h 10m

£839

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 22 resultsSorted by cheapest first

Best time to book a flight from Chicago to Belfast

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

CHI-BF1

ORD-BHD

ORD-BFS

MDW-BHD

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 Chicago to Belfast

CHI-BF1

ORD-BHD

ORD-BFS

MDW-BHD

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

Related info for your journey

How long is the flight from Chicago to Belfast?
Departing from Chicago to Belfast will take you 15h 54m. There are 3647 mi between Chicago and Belfast. This flight may include one or multiple stops.
What are the most popular routes from Chicago to Belfast?
The most popular route from Chicago to Belfast is Chicago O'Hare Intl - Belfast Intl. You may also consider Chicago O'Hare Intl - Belfast City or Chicago Midway - Belfast City.
Can I find deals for flights from Chicago to Belfast that include hotel bookings?
Yes. In addition to deals on Chicago to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Chicago to Belfast?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Belfast.
Can I find deals for business class flights from Chicago to Belfast?
Yes. Cheapflights offers flight deals from Chicago to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Direct flights to Northern Ireland

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Alternative routes for Chicago to Belfast

O'Hare Intl to Belfast Intl flights

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How does Cheapflights help users find flights from Chicago to Belfast?

Cheapflights helps you search for flights from Chicago to Belfast via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Chicago to Belfast?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Chicago to Belfast for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Belfast from Chicago shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Chicago to Belfast become cheaper?

Not ready to book yet? You can track prices for flights from Chicago to Belfast on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Chicago to Belfast from £339

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Chicago to Belfast

Cheapest flights from Chicago to BelfastExplore the most affordable flight options available from Chicago to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Explore the most affordable flight options available from Chicago to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Best flights from Chicago to BelfastDiscover carefully curated flight deals from Chicago to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Discover carefully curated flight deals from Chicago to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Last-minute flights from Chicago to BelfastDiscover last-minute flight deals from Chicago to Belfast. Data last updated 22 August 2026 and is based on user searches.

Discover last-minute flight deals from Chicago to Belfast. Data last updated 22 August 2026 and is based on user searches.

One-way flights from Chicago to BelfastSearch for one-way flight options from Chicago to Belfast. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

Search for one-way flight options from Chicago to Belfast. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.

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Best time to book a flight from Chicago to Belfast

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

Cheapflights Insights

Related info for your journey

How long is the flight from Chicago to Belfast?

What are the most popular routes from Chicago to Belfast?

Can I find deals for flights from Chicago to Belfast that include hotel bookings?

How can I find direct flights from Chicago to Belfast?

Can I find deals for business class flights from Chicago to Belfast?

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.

Alternative routes for Chicago to Belfast

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

Complete your trip

Complete your trip to Belfast 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 Chicago to Belfast by cabin class

Find flights from Chicago to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Chicago and Belfast flights

Browse other Chicago and Belfast flight options. Last updated on 22 August 2026.

Other flights from Chicago

Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on 22 August 2026.

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Fly with Cheapflights

How does Cheapflights help users find flights from Chicago to Belfast?

Why should you use Cheapflights to find cheap flight tickets from Chicago to Belfast?

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

Can Cheapflights notify me if prices for flights from Chicago to Belfast become cheaper?

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Cheapest flights from Chicago to Belfast
Explore the most affordable flight options available from Chicago to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2026.

Best flights from Chicago to Belfast
Discover carefully curated flight deals from Chicago to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 August 2026.

Last-minute flights from Chicago to Belfast
Discover last-minute flight deals from Chicago to Belfast. Data last updated 22 August 2026 and is based on user searches.

One-way flights from Chicago to Belfast
Search for one-way flight options from Chicago to Belfast. Find affordable one-way fares based on user searches. Data last updated 22 August 2026.