Cirium has issued the on-time performance figures for May which show Vietnam Airlines and AirAsia Group airlines leading the way.

In May, Vietnam Airlines led the region with an OTP of 85.11%, a 3-point improvement over last month’s OTP of 81.85%. Noi Bai International Airport (HAN), a hub of Vietnam Airlines, turned in an OTP of 80.57% following a 7-point improvement from April’s OTP of 73.18%.

AirAsia and its subsidiaries also dominated the top rankings, demonstrating the airline’s brand and dedication to offering affordable air travel with a broad network of flights across the region.

Thai AirAsia (FD) came in second place after achieving an OTP of 83.55%, up by 3 points from last month’s OTP of 80.41%. AirAsia (AK) closely followed in third place with an OTP of 82.94%, a 2-point decrease from 85.48% in April. Indonesia AirAsia (QZ) concluded the month in fourth place with an OTP of 82.81%. This was a 2-point decrease from last month’s performance of 84.86%.

Singapore Airlines (SQ) maintained its position in fifth place with an OTP of 77.82%, down from 80.93% in April. Changi International Airport (SIN), main hub of the airline, ended the month with an OTP of 77.41%. Similarly, the airport’s OTP dropped by two points from 79.73% in April.

Download the full report here:

JOIN: AirlineRatings.com YouTube Channel

GET: Accurate MH370 Information From AirlineRatings.com Newsletter

Airlineratings.com is packed with information about air travel and answers questions that many of us may have thought of, but didn’t know who to ask. Well, now you do!

Airlineratings.com was developed to provide everyone in the world with a one-stop shop for everything related to airlines, formed by a team of aviation editors, who have forensically researched nearly every airline in the world.

Our rating system is rated from one to seven stars on safety – with seven being the highest ranking. Within each airline, you will find the country of origin, airline code, booking URL and seat map information.

The rating system takes into account a number of different factors related to audits from aviation’s governing bodies, lead associations as well as the airline’s own safety data. Every airline has a safety rating breakdown so you can see exactly how they rate.

Over 230 of the airlines on the site that carry 99 per cent of the world’s passengers have a product rating.

Given that low-cost, regional and full-service carriers are so different we have constructed a different rating system for each which can be found within each airline.

Airlineratings.com has information on over 30 types of aircraft from the latest Boeing 787 to the A380 and smaller jets.

Best of all, there are simple answers to many of the quirky questions including:

• “What are all those noises after takeoff and before landing?”
• “Why do you have to put the window shades up for landing and takeoff?”
• “What is a winglet and what is it for?
• “Why is it so costly to fly short distances?”
• “How often is an aircraft maintained?
• “How strong is a wing?”
• “How do they test aircraft”
• “How often do plane tyres need to be replaced?