How long is the flight from Chicago to Belfast?

Departing from Chicago to Belfast will take you 16h 30m. There are 3644 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.

£250+ 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 18 September 2026.

Wed 28/1019:30 -

2 stops21h 50m

Wed 4/1121:05 -

3 stops26h 15m

Deal found 13/9£551

Sun 1/1118:30 -

2 stops20h 00m

Sun 8/1121:15 -

3 stops26h 05m

Deal found 16/9£666

Fri 6/1118:08 -

2 stops16h 37m

Sun 22/1117:15 -

1 stop27h 10m

Deal found 14/9£676

Fri 6/1118:00 -

2 stops16h 45m

Sun 22/1109:40 -

2 stops17h 09m

Deal found 14/9£683

Fri 6/1106:04 -

2 stops21h 06m

Sun 22/1109:40 -

2 stops19h 14m

Deal found 14/9£683

Fri 2/1016:15 -

1 stop18h 40m

Sat 10/1017:30 -

1 stop26h 45m

Deal found 12/9£725

Fri 6/1121:50 -

1 stop13h 35m

Sun 22/1112:00 -

1 stop12h 45m

Deal found 14/9£730

Fri 2/1020:10 -

2 stops31h 55m

Sat 10/1019:05 -

1 stop23h 25m

Deal found 12/9£748

Fri 6/1118:30 -

2 stops20h 00m

Sun 22/1118:20 -

3 stops29h 00m

Deal found 14/9£768

Fri 6/1116:30 -

2 stops15h 45m

Sun 22/1122:00 -

3 stops25h 20m

Deal found 14/9£770

Fri 2/1019:25 -

2 stops20h 25m

Sat 10/1021:40 -

2 stops22h 20m

Deal found 12/9£965

Fri 2/1009:55 -

3 stops21h 45m

Sat 10/1007:00 -

2 stops18h 48m

Deal found 12/9£992

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 18 September 2026.

Wed 28/1019:30 -

2 stops21h 50m

Wed 4/1121:05 -

3 stops26h 15m

Deal found 13/9£551

Sun 31/110:40 -

2 stops16h 30m

Mon 8/217:20 -

2 stops29h 17m

Deal found 17/9£614

Tue 9/309:35 -

2 stops17h 35m

Sun 14/317:20 -

1 stop27h 05m

Deal found 15/9£645

Sun 7/317:10 -

1 stop14h 40m

Mon 15/317:35 -

1 stop26h 10m

Deal found 15/9£670

Sat 30/116:25 -

1 stop18h 25m

Mon 8/217:20 -

2 stops29h 17m

Deal found 17/9£648

Wed 10/307:00 -

2 stops20h 10m

Sun 14/317:20 -

2 stops29h 27m

Deal found 15/9£652

Sun 1/1118:30 -

2 stops20h 00m

Sun 8/1121:15 -

3 stops26h 05m

Deal found 16/9£666

Sun 7/321:50 -

1 stop15h 00m

Fri 12/306:45 -

1 stop18h 00m

Deal found 15/9£670

Fri 6/1106:04 -

2 stops21h 06m

Sun 22/1109:40 -

2 stops19h 14m

Deal found 14/9£683

Fri 12/318:30 -

2 stops21h 25m

Sun 21/317:30 -

3 stops30h 50m

Deal found 13/9£764

Fri 6/1116:30 -

2 stops15h 45m

Sun 22/1122:00 -

3 stops25h 20m

Deal found 14/9£770

Tue 9/318:30 -

2 stops20h 10m

Fri 12/306:15 -

2 stops17h 05m

Deal found 15/9£782

Fri 12/318:30 -

2 stops20h 00m

Sun 21/319:45 -

3 stops28h 35m

Deal found 13/9£814

Mon 19/1019:05 -

1 stop11h 50m

Wed 21/1020:35 -

1 stop23h 15m

Deal found 16/9£1,111

Sun 15/1121:50 -

1 stop15h 00m

Wed 18/1112:20 -

1 stop31h 25m

Deal found 14/9£1,111

Fri 2/1019:25 -

2 stops20h 25m

Sat 10/1021:40 -

2 stops22h 20m

Deal found 12/9£965

Fri 2/1019:01 -

2 stops15h 54m

Sat 10/1017:30 -

2 stops28h 44m

Deal found 12/9£1,519

Find flight deals from Chicago to Belfast

Round-trip from	£551
One-way from	£250

28/10-4/11
5 total stops
48h 05m total
Chicago to Belfast

Search Deals

1/11-31/12
2 total stops
20h 00m 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

Sun 1/11

18:30-20:30

2 stops20h 00m

Belfast Intl

Wed 31/12

00:00-17:00

Nonstop0h 00m

£250

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Fri 6/11

17:10-10:55

1 stop11h 45m

Belfast City

Wed 31/12

00:00-17:00

Nonstop0h 00m

£364

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 8/10

14:20-23:00

3 stops26h 40m

Belfast Intl

Wed 31/12

00:00-17:00

Nonstop0h 00m

£366

ChicagoBelfast

MDW Chicago Midway - BHD Belfast City

MDWBHD

Chicago Midway

Fri 6/11

11:39-09:10

2 stops15h 31m

Belfast City

Wed 31/12

00:00-17:00

Nonstop0h 00m

£390

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Fri 6/11

12:50-20:30

3 stops25h 40m

Belfast City

Wed 31/12

00:00-17:00

Nonstop0h 00m

£408

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Wed 28/10

19:30-22:20

2 stops21h 50m

Belfast Intl

Wed 4/11

21:05-17:20

3 stops26h 15m

£551

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 31/1

10:40-09:10

2 stops16h 30m

Belfast City

Mon 8/2

17:20-16:37

2 stops29h 17m

£614

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Tue 9/3

09:35-09:10

2 stops17h 35m

Belfast City

Sun 14/3

17:20-15:25

1 stop27h 05m

£645

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sat 30/1

16:25-16:50

1 stop18h 25m

Belfast City

Mon 8/2

17:20-16:37

2 stops29h 17m

£648

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Wed 10/3

07:00-09:10

2 stops20h 10m

Belfast City

Sun 14/3

17:20-17:47

2 stops29h 27m

£652

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 24 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-BFS

ORD-BHD

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-BFS

ORD-BHD

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 16h 30m. There are 3644 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

Alternative routes

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 £250

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. 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 18 September 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 18 September 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 18 September 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 18 September 2026.

Last-minute flights from Chicago to BelfastDiscover last-minute flight deals from Chicago to Belfast. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Chicago to Belfast. Data last updated 18 September 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 18 September 2026.

Search for one-way flight options from Chicago to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 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 18 September 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 18 September 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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Travel Smart

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 18 September 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 18 September 2026.

Last-minute flights from Chicago to Belfast
Discover last-minute flight deals from Chicago to Belfast. Data last updated 18 September 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 18 September 2026.