Hong Kong International Airport (HKG) is one of the busiest airports in the world, handling more than 53 million passengers in 2024. The facility is the home of Hong Kong's flag carrier, Cathay Pacific, which operates a fleet of more than 150 aircraft to over 80 destinations across the world.

Given its convenient location as a connecting point between East and West, Hong Kong International Airport sees many ultra-long-haul routes operated by Cathay Pacific and foreign carriers. Using data from Cirium, an aviation analytics company, what are the 12 longest nonstop routes from the airport in 2025?

12 Hong Kong (HKG) - Barcelona (BCN)

6,262 miles

Cathay Pacific operates a summer-seasonal route between Hong Kong International Airport (HKG) and Josep Tarradellas Barcelona–El Prat Airport (BCN) in Spain. Between March and October 2025, the oneworld carrier will deploy its fleet of Airbus A350-900s on the 6,262-mile route up to four times per week.

The latest data from ch-aviation shows that Cathay Pacific currently has a total of 30 Airbus A350-900s in its fleet, each capable of carrying up to a maximum of 280 passengers in a three-class configuration - 38 in business class, 28 in premium economy, and 214 in economy class.

11 Hong Kong (HKG) - Vancouver (YVR)

6,393 miles

Three airlines operate the 6,393-mile route between Hong Kong International Airport (HKG) and Vancouver International Airport (YVR), as shown in the table below:

Vancouver is currently the only long-haul destination in Hong Kong Airlines' route network, although service to Sydney (SYD) will commence later this year. That said, the carrier does operate an extensive regional network, connecting Hong Kong with major cities and vacation destinations throughout Asia.

10 Hong Kong (HKG) - Madrid (MAD)

6,541 miles

At 6,541 miles long, the tenth-longest route from Hong Kong International Airport (HKG) is to Adolfo Suárez Madrid–Barajas Airport (MAD) in Spain. Cathay Pacific operates four flights per week on a year-round basis with its fleet of Airbus A350-900s.

9 Hong Kong (HKG) - Johannesburg (JNB)

6,631 miles

At 6,631 miles long, the route between Hong Kong International Airport (HKG) and Johannesburg O. R. Tambo International Airport (JNB) is the ninth-longest route from the Asian airport. Cathay Pacific operates a daily service between the two cities using its Airbus A350-900 aircraft.

The oneworld carrier is the only airline to operate this route, but there are also many one-stop options available with the likes of Singapore Airlines, Emirates, Ethiopian Airlines, and Qatar Airways, via their respective hubs in Singapore (SIN), Dubai (DXB), Addis Ababa (ADD), and Doha (DOH).

8 Hong Kong (HKG) - San Francisco (SFO)

6,927 miles

The eighth-longest route from Hong Kong International Airport (HKG) is to San Francisco International Airport (SFO). Two airlines go head-to-head on the busy 6,927-mile route - Cathay Pacific and United Airlines.

United Airlines operates a double-daily service between the two cities, deploying its Boeing 777-300ERs on the route. Each of the Star Alliance carrier's 22 777-300ERs can accommodate up to a maximum of 350 passengers in a three-class configuration - 60 in business class, 24 in premium economy, and 266 in economy class.

7 Hong Kong (HKG) - Los Angeles (LAX)

7,260 miles

The next-longest route on this list is another transpacific route to California. Two carriers operate the 7,260-mile route between Hong Kong International Airport (HKG) and Los Angeles International Airport (LAX) - Cathay Pacific and United Airlines.

Cathay Pacific deploys a mix of Airbus A350-900s and Boeing 777-300ERs on the route, while United Airlines uses its Boeing 787-9. Each of the Star Alliance carrier's 43 787-9s can carry up to a total of 257 passengers in a three-class configuration - 48 in business class, 21 in premium economy, and 188 in economy class.

6 Hong Kong (HKG) - Chicago (ORD)

7,793 miles

The sixth-longest nonstop route from Hong Kong International Airport (HKG) is to Chicago O'Hare International Airport (ORD). Currently, the oneworld carrier deploys its Airbus A350-1000s on the 7,968-mile route, but will switch to the A350-1000 in March 2025.

5 Hong Kong (HKG) - Toronto (YYZ)

7,809 miles

Cathay Pacific is the only airline to operate direct flights between Hong Kong International Airport (HKG) and Toronto Pearson International Airport (YYZ). At 7,809 miles long, this is the fifth-longest nonstop route from Hong Kong. The oneworld carrier operates up to three flights per day on the busy route with a mix of Airbus A350-900 and A350-1000 aircraft.

Each of Cathay Pacific's 18 Airbus A350-1000s can carry up to a maximum of 334 passengers in a three-class configuration - 46 in business class, 32 in premium economy, and 256 in economy class.

4 Hong Kong (HKG) - Boston (BOS)

7,968 miles

Cathay Pacific operates a daily service from its hub at Hong Kong International Airport (HKG) to Boston Logan International Airport (BOS). Currently, the oneworld carrier deploys its Airbus A350-1000s on the 7,968-mile route, but, just like its services to Chicago, will switch to the A350-1000 in March 2025.

3 Hong Kong (HKG) - Newark (EWR)

8,063 miles

From October 2025, United Airlines will operate a daily service in each direction between Hong Kong International Airport (HKG) and Newark Liberty International Airport (EWR) with its Boeing 777-300ER aircraft. At 8,063 miles long, this is the third-longest nonstop route from Hong Kong.

Newark Liberty International Airport serves as United Airlines' primary East Coast hub, providing connection opportunities all across the US, North America, and beyond.

2 Hong Kong (HKG) - New York (JFK)

8,070 miles

At 8,070 miles long, Hong Kong International Airport (HKG) to New York John F. Kennedy International Airport (JFK) is the second-longest nonstop route from Hong Kong. Cathay Pacific operates three daily services on the route, with a mix of Airbus A350-900s, A350-1000s, and Boeing 777-300ERs.

1 Hong Kong (HKG) - Dallas/Fort Worth (DFW)

8,120 miles

The longest nonstop route from Hong Kong International Airport (HKG) is to Dallas/Fort Worth International Airport (DFW). Cathay Pacific will commence services on the 8,120-mile route on April 24th, 2025, and will operate four flights per week with its fleet of Airbus A350-1000s, before switching to the smaller A350-900 from October 2025.

Dallas/Fort Worth International Airport is a major hub for Cathay Pacific's fellow oneworld partner American Airlines, providing passengers with ample connection opportunities at both ends of the route.

The 12 longest routes from Hong Kong International Airport, together with the airlines and aircraft that operate them, are summarized in the table below: