Last Updated on 2025 年 12 月 3 日 by 総合編集組
Japan Transocean Air (JTA) Baggage Allowance 2025: Complete Guide for Okinawa Island-Hopping Travelers
Japan Transocean Air (JTA), a subsidiary of Japan Airlines (JAL), operates most domestic flights within Okinawa Prefecture, including routes to remote islands like Ishigaki, Miyako, Yonaguni, and Kume. Understanding JTA’s baggage rules is crucial for seamless island-hopping in 2025.
Checked Baggage Allowance – Domestic Flights
- Economy Class: 20 kg free allowance
- Class J / Premium Class: 45 kg free allowance
- Maximum weight per piece: Strictly 32 kg (non-negotiable for safety reasons)
- Maximum dimensions: 203 cm (length + width + height)
- Pooling allowed: Passengers on the same booking can combine their allowance (e.g., 2 adults = 40 kg total)
Excess Baggage Fees & Weight Caps
- Excess fee: ¥440 per kilogram (uniform rate across JAL domestic network)
- Standard aircraft (Boeing 737): Maximum 100 kg total per passenger (after paying excess)
- Small propeller aircraft (RAC / ATR42-600): Hard cap at 45 kg total – no exceptions, even if you’re willing to pay more
Carry-on Baggage Rules
- Total weight limit: 10 kg (including all personal items)
- Allowed: 1 main carry-on + 1 small personal item (handbag, laptop bag)
- Recommended size: Three dimensions total ≤ 115 cm Items exceeding 10 kg at the gate will be forcibly checked (with possible fees).
International to Domestic Connection Risks JAL international flights use the Piece Concept:
- Economy: 2 pieces × 23 kg each
- Business/First: 3 pieces × 32 kg each
When connecting to JTA domestic flights:
- The stricter domestic weight system applies from Naha onward
- Small island flights are capped at 45 kg total Many travelers get charged twice: once on international leg (over 23 kg per piece) and again on domestic leg (over 20 kg total).
Lithium Battery & Power Bank Regulations (2025 Latest) All spare lithium batteries and power banks are prohibited in checked luggage.
- ≤ 100 Wh: Carry-on allowed, no quantity limit
- 100–160 Wh: Maximum 2 items (including those installed in devices)
- Over 160 Wh: Completely prohibited Devices with built-in batteries (100–160 Wh) may be checked only if completely powered off and protected against accidental activation.
Special Notes for Remote Island Routes Flights to Yonaguni, Minami-Daito, Kita-Daito, and Kume are frequently operated by small ATR aircraft. The 45 kg total weight limit is strictly enforced due to payload restrictions. Typhoon season often triggers last-minute aircraft downsizing, leaving excess luggage behind in Naha.
Pro Tips from Frequent Okinawa Travelers
- Pack assuming the strictest rule: 23 kg per bag + 45 kg total
- Weigh carry-on before leaving home – 10 kg is heavily enforced
- Keep all power banks and spare batteries in carry-on with terminals insulated
- Purchase lightweight, collapsible duffel as backup for last-minute repacking
By following these updated 2025 JTA baggage rules, travelers can avoid expensive excess fees, forced abandonment of luggage, or missed flights on Okinawa’s beautiful remote islands.
