✓ Policy web-verified
Thai Airways has overhauled its baggage rules for 2026. From 2 March 2026 (for tickets sold or reissued on or after 25 November 2025), the airline replaced its old weight-based system with a Piece Concept on international routes — what now matters is the number of checked bags tied to your fare class, with a per-piece weight cap, rather than a single pooled weight figure.
Under the new system, an international Economy ticket includes 1 checked piece of up to 23 kg, and more flexible fares get a second piece. Carry-on stays at 1 cabin bag up to 7 kg sized 56 × 45 × 25 cm. Every checked bag must also stay within 158 cm total linear dimensions (length + width + height, wheels included). Figures below are for international travel; some domestic Thai sectors and codeshare/interline segments can differ.
Quick facts
| Personal item | Small item under the seat (no separate published dimensions) |
| Carry-on | 1 bag, 56 × 45 × 25 cm, max 7 kg (Economy) |
| Checked (cheapest Economy) | 1 piece × 23 kg |
| Checked weight cap | 23 kg per piece Economy/Premium; 32 kg per piece Business/First |
| Max linear size | 158 cm (L+W+H, wheels included) per checked piece |
| Excess / extra bag | Zone-based, roughly USD 12–70 per kg; pre-buy in 5 kg blocks for ~20–35% off |
Cabin bag & personal item
| Item | Allowance |
|---|---|
| Personal / under-seat item | No separately published dimensions — must fit under the seat in front. Thai Airways counts a small under-seat item (handbag, laptop bag, camera) alongside the 7 kg cabin bag; large items count toward the 7 kg cabin allowance. |
| Cabin / carry-on bag | 56 × 45 × 25 cm (incl. wheels and handles) · 7 kg (Economy / Premium Economy) Free with all fares |
Checked baggage & fees
| Checked allowance | 1 piece (cheapest Economy Saver/Standard); 2 pieces on Flex/Full Flex; 2–3 pieces in premium cabins |
| Weight limit | 23 kg per piece Economy & Premium Economy; 32 kg per piece Royal Silk Business & Royal First |
| Typical fee | Included by fare class; extra/excess bags charged by route zone, roughly USD 12–70 per kg |
What each fare includes
| Fare | Personal | Cabin | Checked |
|---|---|---|---|
| Economy Saver / Standard | Under-seat item | 7 kg (56×45×25 cm) | 1 × 23 kg |
| Economy Flex / Full Flex | Under-seat item | 7 kg | 2 × 23 kg |
| Premium Economy | Under-seat item | 7 kg | 2 × 23 kg (varies by fare) |
| Royal Silk (Business) | Under-seat item | 2 bags | 2 × 32 kg |
| Royal First | Under-seat item | 2 bags | 3 × 32 kg |
What you actually get on a cheap fare
What you actually get on a cheap Thai Airways fare: unlike most European full-service carriers that strip checked bags from their cheapest long-haul tickets, Thai Airways’ cheapest international Economy fare still includes a checked bag. At deal prices you can expect 1 × 20 kg checked plus a 7 kg cabin bag on both short-haul and long-haul routes — so a headline fare to Bangkok or beyond is genuinely bag-inclusive, not a stripped no-bag basic fare.
One caveat for deal-hunters: the official 2026 Piece Concept caps each Economy piece at 23 kg, so if your booking shows a 20 kg piece weight that is the floor — you will not be charged a no-bag surcharge the way you would on a Light/Basic fare elsewhere.
Oversize, sports & special items
Excess and extra baggage: Thai Airways prices excess baggage on a zone basis — short-haul intra-Asia sectors cost less per kilo than long-haul flights to Europe or Australia, with airport rates roughly in the USD 12–70 per kg range. Pre-purchasing online is far cheaper: you can buy extra allowance in 5 kg blocks (pentads), up to 50 kg per passenger, for around 20–35% off the airport rate if booked at least 24 hours before departure.
Oversize / overweight: any piece over 23 kg (Economy) or over 158 cm linear size triggers excess/oversize charges and may need to be pre-approved. Sports equipment (golf clubs, surfboards, bicycles, fishing gear, ski gear) is accepted as checked baggage and counts toward your piece/weight allowance; if it exceeds the limits, oversize fees and special packing apply. Musical instruments: small ones (e.g. a violin) can go in the cabin if they fit overhead or under the seat; larger instruments (cello, guitar) must be checked or carried on an extra purchased seat.
Baggage by region & route
Thai Airways switched to the piece concept on 2 March 2026. The cheapest Economy Saver fare now gives one piece on all international routes; Full/Flex economy fares give two.
| Region / route | Cheapest economy checked allowance | System |
|---|---|---|
| Intra-Asia / Europe / Australia — Economy Saver (cheapest) | 1 × 23 kg | Piece |
| USA / Canada — Economy Saver | 1 × 23 kg (Full/Flex 2 × 23 kg) | Piece |
| Full / Flex economy (any route) | 2 × 23 kg | Piece |
✈️ Star Alliance: Gold members get +1 checked piece (or +20 kg) free.
Thai resumed US flights (New York, Los Angeles, San Francisco). The old weight allowance is gone — it is now strictly pieces. Allowances are for the cheapest bookable economy fare, web-verified June 2026; always confirm on your e-ticket as fares and routes change.
Frequently asked questions
What is Thai Airways' carry-on baggage allowance in 2026?
Economy passengers may bring 1 cabin bag up to 7 kg, sized 56 × 45 × 25 cm including wheels and handles, plus a small personal item that fits under the seat. Business and First Class passengers may bring 2 cabin bags.
How many checked bags does the cheapest Thai Airways Economy fare include?
Under the Piece Concept effective 2 March 2026, the cheapest international Economy Saver/Standard fare includes 1 checked piece of up to 23 kg. At typical deal prices you can expect a checked bag of around 20 kg included plus the 7 kg cabin bag.
What changed with Thai Airways baggage in 2026?
From 2 March 2026 (tickets issued from 25 November 2025), Thai Airways switched international flights from the old weight-based system to a Piece Concept. The number of checked pieces is now set by your fare class, with a per-piece weight cap of 23 kg in Economy and 32 kg in Business/First.
How much does extra checked baggage cost on Thai Airways?
Excess baggage is priced by route zone, roughly USD 12–70 per kilo, with intra-Asia sectors cheapest and long-haul Europe/Australia routes the most expensive. Pre-buying online in 5 kg blocks (up to 50 kg) saves around 20–35% versus the airport rate.
What is the maximum size for a Thai Airways checked bag?
Each checked piece must not exceed 158 cm in total linear dimensions (length + width + height, including wheels). Anything larger is treated as oversize and may incur extra charges or require advance approval.
How much can a Business or First Class checked bag weigh on Thai Airways?
Royal Silk (Business) gets 2 pieces of up to 32 kg each, and Royal First gets 3 pieces of up to 32 kg each. Economy and Premium Economy pieces are capped at 23 kg each.
Can I bring sports equipment or a musical instrument on Thai Airways?
Yes. Sports gear such as golf clubs, bicycles, surfboards and skis is accepted as checked baggage within your piece and weight allowance; oversize fees apply if it exceeds the limits. Small instruments can travel in the cabin if they fit; larger instruments must be checked or carried on a purchased extra seat.
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🧳 Related baggage guides: Singapore baggage
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