Thai Lion Air

Q: What are Thai Lion Air's airline codes?

Thai Lion Air's IATA code is SL , its ICAO code is TLM , and its callsign is MENTARI .

SL TLM

Thai Lion Air is a Thailand-based low-cost airline in the Lion Air Group, flying from Bangkok Don Mueang across Thailand and Asia. This guide covers its hubs, network, fleet, seats, baggage, check-in and airport transportation.

34
Aircraft: 50
Destinations: DMK
Hub

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The airline

About Thai Lion Air

Schedules, aircraft assignments, terminals and fare rules can change. Confirm operational details directly with Thai Lion Air before travel.

Official name: Thai Lion Mentari Co., Ltd.
Callsign: MENTARI
Country: Thailand
Founded: 2013
Parent company: Lion Air Group
Head office: Don Mueang, Bangkok, Thailand
Alliance: None
Official website: lionairthai.com

Thai Lion Air (Thai Lion Mentari Co., Ltd.) is a low-cost airline based in Thailand and part of the Lion Air Group of Indonesia. It started flying in December 2013 and has its head office in the Don Mueang district of Bangkok. It is not a member of an airline alliance and sells fares on its own website, lionairthai.com.

Its main base is Bangkok Don Mueang International Airport (DMK). From there it flies to about 50 destinations: cities across Thailand such as Chiang Mai, Phuket, Krabi and Hat Yai, plus international routes to Hong Kong, Macau, Singapore, Penang, Bali, mainland China, Taiwan and Japan. Some Japan flights stop in Taipei or Kaohsiung on the way.

The fleet of 34 aircraft is all Boeing: 737-800s and 737-900ERs, each with a single economy cabin.

Network

Where Thai Lion Air flies

Routes and frequencies change with the season. Thai Lion Air flight numbers start with SL; check the schedule for your travel dates when you book.

Thailand

Flights from Don Mueang to cities such as Chiang Mai, Chiang Rai, Phuket, Krabi, Hat Yai, Surat Thani, Udon Thani, Khon Kaen and Ubon Ratchathani.

Southeast Asia

Routes from Don Mueang to Singapore, Penang and Bali (Denpasar).

East Asia

Flights to Hong Kong, Macau and selected cities in mainland China, and to Taiwan with onward service to Tokyo Narita and Osaka Kansai via Taipei, and to Okinawa and Sapporo via Kaohsiung.

India

Thai Lion Air's schedule shows flights from Don Mueang to Indian cities, including Bengaluru, Chennai and Kochi, from mid-December 2026. Check the dates for your trip when you book.

Aircraft

Thai Lion Air fleet

Thai Lion Air flies an all-Boeing 737 fleet of 34 aircraft. The aircraft shown at booking is not guaranteed until departure.

Boeing 737-800

About 20 aircraft with 189 seats, used across the domestic and regional network.

Boeing 737-900ER

About 14 aircraft with 215 seats, used on higher-demand domestic routes and longer international flights.

On board

Thai Lion Air cabin classes

Thai Lion Air has a single economy cabin. Seat selection, checked baggage and other extras depend on the fare you buy; options are shown at booking.

Economy

The standard all-economy cabin on both the 737-800 and 737-900ER.

Seat selection

Seats can be chosen in advance, including front-row and exit-row seats with more legroom where available. What is included depends on fare.

Fare options

Higher fare types can include more baggage and more flexible changes. The conditions of each fare are shown before you pay.

Before you fly

Practical information

Baggage Cabin bags, checked bags, missing luggage

Thai Lion Air baggage allowances depend on the fare and the route. Check your booking for what is included.

Carry-on

Every fare includes a cabin baggage allowance. Size and weight limits depend on fare and are shown during booking; bags that exceed them must be checked in.

Checked baggage

Some fares include checked baggage and others do not. Extra allowance can be added during booking or later in Manage Booking.

Special items

Sports equipment, musical instruments, medical equipment and other special items follow separate rules. Check lionairthai.com before you fly.

Check-in and boarding Steps before departure

Online check-in is available on lionairthai.com. Opening and closing times depend on the route and are shown in your booking; counters and bag drop close earlier for international flights.

1 Confirm
Confirm the operating airline, the airport (Don Mueang, not Suvarnabhumi, in Bangkok) and the terminal.
2 Documents
Review passport, visa and entry requirements for your destination.
3 Check in
Check in online as soon as it opens.
4 Boarding pass
Download the mobile boarding pass or print it.
5 Arrive early
Allow time for bag drop, security and, on international flights, immigration.

Lounges

Lounge access is not part of standard Thai Lion Air fares. Travelers can use independent lounges at Don Mueang and other airports where access is sold separately or offered through cards and memberships. Check the location and opening hours before you travel.

Loyalty program

Thai Lion Air does not list a frequent-flyer program on its website. Check lionairthai.com for any member offers or promotions that apply to your trip.

Flight status and customer service Official sources

For current operational information, use Thai Lion Air's official services:

Thai Lion Air website

lionairthai.com for booking, check-in, trip management and flight status

Thai Lion Air contact center

Contact details for schedule changes and booking help are listed on the official website

Where you land

Thai Lion Air airports

Thai Lion Air's main base is Bangkok Don Mueang International Airport (DMK), which handles nearly all of its domestic and international flights. It does not fly from Bangkok Suvarnabhumi (BKK), so check the airport on your ticket before you book a transfer.

Don Mueang International Airport Hub

DMK · Bangkok

Most Thai Lion Air routes start or end here.