An Airbus A320 version 216, registered as HS-ABH. The machine was delivered in November 2011 to Air Asia. AirAsia Berhad is a Malaysian low-cost airline headquartered near Kuala Lumpur, Malaysia. Air Asia is a large company and has also a number of affiliated airlines, including Thai AirAsia, Indonesia AirAsia, Indonesia AirAsia X, Philippines AirAsia, AirAsia India and AirAsia X. In 2018 AirAsia (not counting the subsidiaries) had 89 aircraft and 349 were on order. All then existing machines were A320 and A320neo machines.
Picture of A320 HS-ABH from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

Air Asia Airbus A320 version 216, registered as HS-ABC is similar to the machine pictured above, but had at the time when this picture was taken a special livery promoting the women's volleyball team of Thailand. The machine was serving on the Bangkok to Krabi route.
Picture of A320 HS-ABC from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

Yet another Airbus A320 9M-AFF of Air Asia. This one is registered in Malaysia and was delivered to Air Asia in 2006.
Picture of A320 9M-AFF from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

Nok Air is a Thai airline based in Bangkok. It operates mainly Thai domestic routes but also to China, Vietnam, Myanmar and Singapore.
Picture of Nok Air B737-800 HS-DBY from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

Another Boeing B737-800 of Nok Air, HS-DBT. It was delivered in 2015.
Picture from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

HS-DOF of Nok Air is a Bombardier Dash 8 version Q400.
Picture from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

HS-DQH is another Bombardier (or De Havilland Canada) Dash 8 version Q400. It's fairly new, it was delivered to Nok Air in July 2016.
Picture from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

HS-DOA is yet another Bombardier Dash 8 version Q400 of Nok Air.
Picture from Bangkok Don Mueang airport 18.5.2018 by Markku Salo.

Scoot Tigerair or just Scoot is a discount airline based at Singapore Changi Airport. Scoot is owned by Singapore Airlines via a subsidiary company called Budget Airline Holdings. Intially Scoot operated with Boeing 777 aircraft, but has lately been switching to Boeing 787 Dreamliners.
Picture of a Scoot 787 Dreamliner at Bangkok Don Mueang airport 18.5.2018 by Markku Salo.