15. Avianca Brazil
> Flights delayed: 17.1%
> # of July flights: 7,614
> Average length of delay: 39.6 minutes
> Nation headquartered: Brazil
Avianca was originally launched as OceanAir in 1998 to provide air taxi services for the oil industry. It has since grown to become the fourth largest domestic carrier in Brazil.
> Flights delayed: 16.2%
> # of July flights: 22,567
> Average length of delay: 36.8 minutes
> Nation headquartered: Netherlands
KLM is the flag carrier of the Netherlands and is the oldest airline still operating under its original name. KLM merged with Air France in 2004, but both airlines retained their own brands.
> Flights delayed: 15.2%
> # of July flights: 17,918
> Average length of delay: 41.4 minutes
> Nation headquartered: Spain
Spain’s flag carrier, Iberia, was founded in 1927. It merged with British Airways in 2011, resulting in the creation of the International Airlines Group (IAG). Subsidiary Iberia Express ranks even better on our survey.
12. Horizon Air
> Flights delayed: 15.1%
> # of July flights: 11,907
> Average length of delay: 39.5 minutes
> Nation headquartered: United States
Seattle-based Horizon was acquired by Alaska Air Group in 1986 and branded separately until 2011. Its flights are now marketed by Alaska Airlines, but the company is still in operation.
11. WestJet Encore
> Flights delayed: 14.9%
> # of July flights: 7,819
> Average length of delay: 51.6 minutes
> Nation headquartered: Canada
WestJet Encore is a subsidiary of low-cost carrier WestJet. It was launched in 2013 to meet the needs of underserved communities in Canada.
> Flights delayed: 14.9%
> # of July flights: 30,616
> Average length of delay: 35.7 minutes
> Nation headquartered: Japan
ANA, or All Nippon Airways, is Japan’s largest airline – larger even than flag carrier JAL. Its international operations focus on business destinations.
9. Etihad Airways
> Flights delayed: 14.8%
> # of July flights: 8,565
> Average length of delay: 37.8 minutes
> Nation headquartered: United Arab Emirates
Etihad was established by royal decree in 2003 as the second flag carrier of the United Arab Emirates. It has expanded aggressively and acquired stakes in other airlines, including the now-bankrupt Alitalia and Air Berlin.
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