Thai Airways Baggage Allowance: Cabin Bags, Checked Baggage & Fees
Flying with Thai Airways? Check cabin baggage, checked-baggage allowances and fare differences before you travel.
Thai Airways' baggage policy changed materially in 2026, with a piece-concept checked-baggage system introduced across its global network for qualifying tickets and travel. The standard cabin bag can measure up to 56 × 45 × 25cm and weigh up to 7kg. Checked-baggage allowance varies by cabin, fare and route, so the allowance on your ticket is especially important.
Cabin baggage is one of the first things to check before travelling with Thai Airways, because the number of pieces, permitted size and weight can differ by fare or travel class. The current allowance is summarised as follows: 1 cabin bag up to 56 × 45 × 25cm and 7kg in Economy, Economy Plus and premium cabins; additional allowance may apply by class/status.. Your smaller personal item, where permitted, should be suitable for stowage beneath the seat, while the main cabin bag must fit safely in the overhead locker.
Checked baggage with Thai Airways also depends on the ticket you have purchased rather than simply the destination. The current headline allowance is: Thai introduced a global piece-concept policy for travel from 2 March 2026. Economy, Premium and Business allowances vary by fare and route.. Lower-cost or light fares can exclude checked baggage altogether, while flexible and premium fares often provide a larger allowance. Always check the baggage entitlement attached to the individual booking before packing.
Size and weight are separate limits. A suitcase can be within the permitted dimensions but still be overweight, or it can be light enough while exceeding the airline's dimensional limit. Additional, overweight and oversized baggage is charged separately; route and class determine pricing.. Additional, overweight or oversized baggage can therefore attract extra charges or different handling requirements.
Cabin baggage must also comply with airport-security and dangerous-goods rules, which are separate from Thai Airways's own baggage allowance. Liquids, gels, pastes and aerosols may be subject to the familiar 100ml container restrictions depending on the departure and connecting airports, while power banks and spare lithium batteries normally need to remain in cabin baggage rather than being packed in the hold.
This guide explains Thai Airways's cabin and personal-item rules, checked-baggage allowances, fare and travel-class differences, liquid restrictions, additional and excess baggage, and the practical points most likely to cause problems at the airport. If another airline operates part of your journey, check that carrier's rules as well because allowances can differ across a multi-airline itinerary.
Free Cabin Bag Size
1 cabin bag up to 56 × 45 × 25cm
7kg in Economy, Economy Plus and premium cabins
Additional allowance may apply by class/status.
Checked Baggage Allowance
Thai introduced a global piece-concept policy for travel from 2 March 2026.
Economy, Premium and Business allowances vary by fare and route.
Additional Baggage Fees
Additional, overweight and oversized baggage is charged separately; route and class determine pricing.
Key Thai Airways Baggage Tips
Standard cabin-bag weight: up to 7kg.
Thai moved to piece-concept checked baggage for eligible travel from March 2026.
Checked pieces are limited to 158cm total dimensions.
Check the allowance on your Thai Airways booking before you pack. Fare, cabin and route differences can materially change what is included.
Measure bags externally, including wheels, handles and protruding pockets, rather than relying only on the manufacturer's stated suitcase size.
Weigh cabin and checked baggage at home. A bag can be within the size limit but still attract charges if it exceeds the permitted weight.
Keep the personal item genuinely small enough to fit beneath the seat if the airline requires under-seat stowage; do not treat it as a second full-size cabin bag.
If you already know you need extra checked baggage, add it before reaching the airport where the airline offers advance purchase; airport excess-baggage charges can be higher.
Where standard airport liquid rules apply, the container size matters: a partly used bottle larger than 100ml can still be rejected at security.
Pack full-size toiletries in checked baggage when appropriate, while keeping medication and anything needed during the journey accessible in the cabin.
Keep power banks and spare lithium batteries in cabin baggage, protected against short circuits, rather than placing them in the hold.
Thai Airways cabin baggage sizes at a glance
Check the bag dimensions, weight limits and fare-specific inclusions before you travel, particularly where different fare families offer different baggage allowances.
Thai Airways baggage allowance by cabin
Baggage allowances can vary by fare, route and travel class. Always check the allowance shown on your booking before you travel.
Economy
Premium Economy
Cabin baggage
1 × 7kg
56 × 45 × 25cm
Checked baggage
Piece allowance varies by fare/route
Best for
Value-focused long-haul travellers.
Cabin baggage
1 × 7kg
56 × 45 × 25cm
Checked baggage
Higher allowance than Economy
Route dependent
Best for
Long-haul travellers wanting more comfort and baggage.
Royal Silk / First
Cabin baggage
1 × 7kg
Status benefits may add allowance
Checked baggage
Higher piece/weight allowance
Up to 32kg per piece
Best for
Premium travellers carrying heavier checked baggage.
Checked baggage with Thai Airways: what you need to know
Thai Airways applies a piece-concept checked-baggage policy across its global network for eligible tickets and travel from March 2026.
The exact number of pieces depends on cabin, fare and route. Each standard checked piece must remain within 158cm total dimensions.
Premium cabins permit heavier checked pieces, with an upper limit of 32kg per piece.
Because the 2026 policy is route-sensitive, use the allowance shown on your ticket as the final authority.
Thai Airways's checked-baggage entitlement can depend on the fare, travel class, route and the airline operating each sector. The allowance shown on your ticket or booking confirmation should therefore be treated as the final reference.
If your included allowance is not enough, additional baggage can usually be added where the airline offers this service. Arranging extra baggage before travel is generally preferable to discovering an excess at check-in.
A bag that exceeds the permitted weight, dimensions or number of pieces can be treated as excess, overweight or oversized baggage. Separate charges or handling restrictions may apply, and very heavy items may need to be repacked or carried as cargo.
For journeys involving another airline, do not assume the same checked-baggage rules apply throughout. Codeshare and interline itineraries can be governed by the operating carrier or the most-significant carrier under the applicable baggage rules.
Before travelling, check the baggage allowance attached to your specific Thai Airways booking, particularly if you have changed your ticket, upgraded your cabin or added a connecting flight.
Thai Airways cabin baggage rules: liquids, extras and restrictions
Thai Airways permits one standard cabin bag up to 56 × 45 × 25cm and 7kg.
The dimensions include wheels, handles and side pockets.
Premium cabins and eligible status customers can receive additional cabin allowances in some circumstances.
Cabin baggage must fit in the overhead locker or beneath the seat as directed.
Airport-security liquid rules apply separately.
Cabin baggage must be small and light enough to be safely stowed in the overhead locker or, for a personal item, beneath the seat in front. Published measurements normally include wheels, handles and other protruding parts unless the airline explicitly states otherwise.
For journeys departing the UK, liquids, gels, pastes and aerosols are subject to the security rules at the departure airport. Where the standard 100ml rule applies, individual containers must normally hold no more than 100ml and be presented in the permitted transparent resealable liquids bag.
Typical products affected include toothpaste, deodorant, shampoo, conditioner, shower gel, sun cream, skincare and cosmetics. Medication, baby food and certain medical items can qualify for security exemptions when required for the journey, although supporting evidence may be requested.
Power banks and spare lithium batteries should be carried in cabin baggage rather than checked baggage and protected against short circuits. Other dangerous or restricted items can be prohibited entirely or limited to either cabin or checked baggage.
Thai Airways staff or airport handling agents may check cabin baggage at check-in or the gate. A bag that exceeds the permitted number, size or weight can be placed in the hold and additional charges may apply.
Common Thai Airways cabin baggage mistakes to avoid
Assuming every fare includes the same cabin-baggage allowance
Forgetting to include wheels and handles when measuring a bag
Using a personal item that is too large to fit beneath the seat
Packing liquids in containers larger than 100ml where standard airport restrictions apply
Assuming a partly empty large liquid container is security compliant
Packing power banks or spare lithium batteries in checked baggage
Ignoring different baggage rules on a partner-operated or connecting flight
Arriving at the airport without checking the allowance shown on the booking
Thai Airways cabin baggage rules: liquids, extras and restrictions
Thai Airways permits one standard cabin bag up to 56 × 45 × 25cm and 7kg.
The dimensions include wheels, handles and side pockets.
Premium cabins and eligible status customers can receive additional cabin allowances in some circumstances.
Cabin baggage must fit in the overhead locker or beneath the seat as directed.
Airport-security liquid rules apply separately.
Cabin baggage must be small and light enough to be safely stowed in the overhead locker or, for a personal item, beneath the seat in front. Published measurements normally include wheels, handles and other protruding parts unless the airline explicitly states otherwise.
For journeys departing the UK, liquids, gels, pastes and aerosols are subject to the security rules at the departure airport. Where the standard 100ml rule applies, individual containers must normally hold no more than 100ml and be presented in the permitted transparent resealable liquids bag.
Typical products affected include toothpaste, deodorant, shampoo, conditioner, shower gel, sun cream, skincare and cosmetics. Medication, baby food and certain medical items can qualify for security exemptions when required for the journey, although supporting evidence may be requested.
Power banks and spare lithium batteries should be carried in cabin baggage rather than checked baggage and protected against short circuits. Other dangerous or restricted items can be prohibited entirely or limited to either cabin or checked baggage.
Thai Airways staff or airport handling agents may check cabin baggage at check-in or the gate. A bag that exceeds the permitted number, size or weight can be placed in the hold and additional charges may apply.
Common Thai Airways cabin baggage mistakes to avoid
Assuming every fare includes the same cabin-baggage allowance
Forgetting to include wheels and handles when measuring a bag
Using a personal item that is too large to fit beneath the seat
Packing liquids in containers larger than 100ml where standard airport restrictions apply
Assuming a partly empty large liquid container is security compliant
Packing power banks or spare lithium batteries in checked baggage
Ignoring different baggage rules on a partner-operated or connecting flight
Arriving at the airport without checking the allowance shown on the booking