This is a list of defunct airlines of Thailand.[1][2]
| Airline | Image | IATA | ICAO | Callsign | Commenced operations | Ceased operations | Notes |
|---|---|---|---|---|---|---|---|
| Air Andaman |  |
2Y | ADW | Air Andaman | 2000 | 2004 | |
| Air Phoenix |  |
APN | THAI AIR PHOENIX | 2008 | 2009 | ||
| Air Siam |  |
VG | 1965 | 1977 | |||
| Angel Air |  |
8G | NGE | ANGEL AIR | 1998 | 2003 | |
| Asia Atlantic Airlines |  |
HB | AAQ | ASIA ATLANTIC | 2013 | 2018 | |
| Asia Pacific Airlines | 2013 | 2013 | Rebranded as Asia Atlantic Airlines | ||||
| Asian Air | .jpg) |
DM | DEX | ASIAN AIR | 2013 | 2016 | [3] |
| Bira Air Transport | 1969 | 1974 | |||||
| Business Air |  |
8B | BCC | THAI BIZ | 2009 | 2015 | Rebranded as Intira Airlines |
| City Airways | .jpg) |
E8 | GTA | CITY AIRWAYS | 2011 | 2016 | |
| Crystal Thai Airlines | YL | KPS | CRYSTAL THAI | 2010 | 2012 | Rebranded as U Airlines | |
| Flyhy Cargo Airlines | W3 | FYH | 2004 | 2005 | |||
| Happy Air |  |
HPY | HAPPY TRAVEL | 2009 | 2015 | ||
| Intira Airlines | 8B | BCC | THAI BIZ | 2015 | 2015 | Not launched | |
| Jetgo International | JIC | 2004 | 2007 | [4] | |||
| Jet Asia Airways | .jpg) |
JF | JAA | JET ASIA | 2011 | 2020 | |
| Kan Air | .jpg) |
K8 | KND | KANNITHI AIR | 2010 | 2017 | |
| Legacy Air | L4 | LGC | LEGACY AIR | 2009 | [5] | ||
| New Gen Airways | .png) |
E3 | VGO | VIRGO | 2012 | 2019 | |
| NokScoot | .jpg) |
NCT | XW | BIG BIRD | 2013 | 2020 | Shut down due to the COVID-19 pandemic |
| One-Two-GO Airlines |  |
OG;E2 | OTG | THAI EXPRESS | 2005 | 2010 | Integrated into Orient Thai Airlines |
| Orient Express Air | OX | OEA | 1995 | 1997 | Merged into Orient Thai Airlines | ||
| Orient Thai Airlines |  |
OX | OEA | ORIENT THAI | 1995 | 2018 | Went bankrupt |
| Pacific Overseas Airlines | .jpg) |
1947 | 1951 | Merged with Siamese Airways to form Thai Airways Company | |||
| PBair |  |
9Q | PBA | PEEBEE AIR | 1997 | 2009 | |
| P.C. Air | .jpg) |
GT | PCA | PIYO AIR | 2010 | 2012 | |
| Phetchabun Airlines | 2005 | 2005 | |||||
| Princess Airlines | 1996 | 1996 | |||||
| R Airlines | .jpg) |
RK | RCT | GREEN SKY | 2012 | 2018 | |
| SGA Airlines | 5E | SGN | SIAM | 2002 | 2014 | ||
| Siam Air | .jpg) |
O8 | SQM | GOLDEN FIN | 2014 | 2017 | |
| Siamjet Airlines | SCJ | SIAM JET | 2012 | 2012 | Not launched[6] | ||
| Siamese Airways | 1947 | 1951 | Merged with Pacific Overseas Airlines to form Thai Airways Company | ||||
| Sky Eyes Airways | I6 | SEQ | 1995 | 2008 | |||
| SkyStar Airways |  |
XT | SKT | SKY YOU | 2005 | 2009 | |
| Solar Air | SRB | SOLAR THAI | 2004 | 2010 | |||
| Sunny Airways |  |
2S | SUW | SUNNY | 2011 | 2012 | |
| Thai Air Cargo |  |
T2 | TCG | THAI CARGO | 2005 | 2006 | |
| Thai Airways Company |  |
TH | THA | THAI AIR | 1951 | 1988 | Merged into Thai Airways International |
| Thai Global Air | YH | THG | 2006 | 2008 | |||
| Thai Pacific Airlines | 3P | TPV | THAI PACIFIC | 2003 | 2004 | ||
| Thai Regional Airlines | RW | TRB | THAI REGIONAL | 2012 | 2013 | ||
| Thai Sky Airlines |  |
9I | LLR | THAI SKY AIR | 2004 | 2007 | |
| Thai Smile | .jpg) |
THD | WE | THAI SMILE | 2012 | 2023 | Merged into Thai Airways International |
| Thai Tiger Airways | 2010 | 2011 | Failed venture | ||||
| ThaiJet |  |
THJ | THAI JET | 2003 | 2004 | ||
| Trans Asiatic Airlines | 1947 | 1950 | |||||
| U Airlines | YL | ULG | UNICORN | 2012 | 2014 | ||
| Wisdom Airways | GBJ | 2017 | 2019 |