Carry-On Only for Thailand: Beat 7 kg Limits and Pack Smart

Thailand is hot, humid, and extremely well-stocked with cheap everything. The carry-on case here is strong: budget heavily for what you buy locally, pack the minimum, and let Thailand's convenience stores, markets, and pharmacies fill any gaps. Check the actual operating carrier’s baggage allowance for domestic connections.

The 7 kg Reality on Thai Budget Routes

For Thailand flights, distinguish Thai Vietjet VZ from Vietnamese Vietjet VJ. Use the actual operator’s current cabin policy for each segment; do not transfer a VJ fare allowance or assume a particular weighing frequency.

The practical solution: weigh your packed bag at home with a handheld luggage scale (buy one for under $10). Target 6.5 kg packed so you have 500 g buffer for a water bottle, phone, and items picked up before you board.

Clothing for Thailand's Heat

Thailand is hot year-round. The cool season (November to February) in northern Thailand can reach 10–15°C at night in Chiang Mai, so a light layer helps. Everywhere else, every season, it is 28–38°C and humid.

What to pack:

• 4–5 lightweight moisture-wicking tops or breathable cotton shirts
• 2 pairs of lightweight shorts or thin linen trousers
• 1 lightweight scarf (temples, cool restaurants, evening cover)
• Comfortable walking sandals and one pair of trainers
• 5–6 pairs of quick-dry underwear
• 1 packable rain layer (monsoon season May to October)

Leave swimwear out. Buy a pair of beach shorts or a swimsuit at any Chatuchak-style market or beachside stall for under 200–300 baht. Better fit, lighter bag.

Toiletries: Buy at 7-Eleven

Thailand has a 7-Eleven on nearly every street in Bangkok and in every beach town. These convenience stores sell shampoo, conditioner, body wash, deodorant, toothpaste, and face wash at prices well below European or Australian pharmacy prices. Watsons and Boots branches in Central, Terminal 21, and major malls carry full international brands including Dove, Pantene, Nivea, and local Thai brands that work well in tropical humidity.

Skip the liquids bag. Pack a solid shampoo bar and solid deodorant for the first day, then restock at 7-Eleven after landing. This approach saves 400–600 g instantly.

Mosquito Repellent

Mosquitoes in Thailand carry dengue fever — repellent is not optional. Liquid DEET spray falls under the 100 ml carry-on rule. Options:

• Pack a solid repellent stick (no liquid classification, under 100 ml limit doesn't apply)
• Bring one 100 ml DEET roll-on through security and buy a full-size bottle at a Thai pharmacy
• Buy repellent on arrival — Sketolene and Autan are widely sold at 7-Eleven for around 50–80 baht

Temple Clothing Strategy

Most Thai wats require covered shoulders and knees. The lightweight solution: one cotton or bamboo scarf, approximately 70 × 180 cm, weighing under 100 g. Worn around the waist it becomes a sarong for knees. Draped over shoulders it meets the upper body requirement. Tied as a head covering at some stricter sites. One piece of cloth handles all scenarios.

Many major tourist temples like Wat Phra Kaew provide wrap cloths at the entrance. But quality varies and you can't always count on availability. Pack the scarf.

Bangkok Suvarnabhumi Security

Suvarnabhumi is a large, busy hub and security can be thorough during peak periods. Arrive at least 90 minutes before an international departure. Laptops must come out of bags and go in a tray. Liquids must be in a clear bag. Remove shoes and belts. The process is professional but not fast.

For an AirAsia or Nok Air connection, confirm the actual airport and terminal on each booking. Do not assume a faster queue or that arriving 60 minutes before departure is sufficient; follow the operating carrier’s check-in and boarding deadlines and allow for any airport transfer.

Southern Islands Carry-On Strategy

Koh Samui has its own airport (USM) served by Bangkok Airways, which is a full-service carrier with a more generous cabin allowance. Phuket (HKT) and Krabi (KBV) are served by AirAsia and Thai AirAsia — the 7 kg limit applies.

For island-hopping between Koh Tao, Koh Phangan, and Koh Samui, you'll use ferries and speedboats rather than planes. Storage space on boats is limited — a 40 L soft carry-on fits in a cabin compartment much more easily than a hard-sided 55 L bag. Pack accordingly if you plan island transfers by sea.