Under the seat
30×30×20 cm
11.8×11.8×7.9 in
Additional small personal belongings consolidated to fit under the front seat; published reference dimensions 30×30×20 cm. No separate numeric personal-item weight is established. US departures specify one personal item.
Overhead cabin bag
55×40×20 cm
21.7×15.7×7.9 in
Weight limit: 7 kg (15.4 lb)
Route-dependent policy: domestic Economy 1×7 kg and Business 2×7 kg, each 55×40×20 cm; international/regional except US Economy 1×10 kg and Business 2×10 kg, each 115 cm total; US-related Economy/Business 1×10 kg and 115 cm total. The route-unaware checker uses the conservative 7 kg domestic box and one main piece; confirm the applicable higher allowance manually. Hainan through-ticket and specified separate-ticket connections under 24 hours can use the international allowance.
The source does not say whether wheels and handles are included, so measure the full external size to be safe.
1 cabin bag
Route-dependent policy: domestic Economy 1×7 kg and Business 2×7 kg, each 55×40×20 cm; international/regional except US Economy 1×10 kg and Business 2×10 kg, each 115 cm total; US-related Economy/Business 1×10 kg and 115 cm total. The route-unaware checker uses the conservative 7 kg domestic box and one main piece; confirm the applicable higher allowance manually. Hainan through-ticket and specified separate-ticket connections under 24 hours can use the international allowance.
1 cabin bag
Route-dependent policy: domestic Economy 1×7 kg and Business 2×7 kg, each 55×40×20 cm; international/regional except US Economy 1×10 kg and Business 2×10 kg, each 115 cm total; US-related Economy/Business 1×10 kg and 115 cm total. The route-unaware checker uses the conservative 7 kg domestic box and one main piece; confirm the applicable higher allowance manually. Hainan through-ticket and specified separate-ticket connections under 24 hours can use the international allowance.
No reliable fixed price is listed here. Check your booking for the cost of adding a bag; an unlisted price does not mean it is free.
Official baggage policyCheck cabin bag dimensions, weight and personal-item limits separately. A bag has to pass every published limit at once; being under the length and width limit does not help if the depth, weight, or fare-specific allowance is tighter.
Editorial signal only. Measure the packed bag and verify the operating carrier's rule.
Hainan distinguishes routes: international/regional liquids use containers up to 100 ml in one clear resealable 1 litre bag. Domestic liquids are generally prohibited, with limited screened personal cosmetics, toothpaste/shaving cream, necessary infant milk and medicines exceptions. Do not apply the international rule to every domestic flight.
The current carry-on page applies the adult cabin allowance to an infant without a seat; route-specific limits still apply. No flat infant fare percentage is asserted.
Portable folding stroller or similar equipment may enter the cabin within 55×40×20 cm folded and subject to stowage; larger items must be checked. Confirm fees and collection point.
Cabin use, approval and any separate allowance require confirmation; no automatic free carriage or use is established by this reviewed page.
Confirm the booked child ticket and route; no separate bonus cabin allowance is established.
Source-based research; no hands-on test or specialist review claimed.
Route-dependent policy: domestic Economy 1×7 kg and Business 2×7 kg, each 55×40×20 cm; international/regional except US Economy 1×10 kg and Business 2×10 kg, each 115 cm total; US-related Economy/Business 1×10 kg and 115 cm total. The route-unaware checker uses the conservative 7 kg domestic box and one main piece; confirm the applicable higher allowance manually. Hainan through-ticket and specified separate-ticket connections under 24 hours can use the international allowance. Personal reference box30×30×20 cm; infant without seat follows adult cabin allowance.
Current official Mexico-site page is Spanish despite LANGUAGE=US. Route distinctions retained; checker cannot select geography or transfer-ticket exceptions.
Carry-on baggage table; tips 1–3; small belongings and infant equipmentSource review: · Codex (AI source review)
Hainan distinguishes routes: international/regional liquids use containers up to 100 ml in one clear resealable 1 litre bag. Domestic liquids are generally prohibited, with limited screened personal cosmetics, toothpaste/shaving cream, necessary infant milk and medicines exceptions. Do not apply the international rule to every domestic flight.
Domestic and international/regional liquids distinguished; exemptions require security checks.
Items I–IV; linked from current Hainan restrictions pageSource review: · Codex (AI source review)
Check the actual Hainan-operated segments and ticket combination. No alliance status, uniform gate price or inspection frequency is inferred.
Rules can change. Always verify with Hainan Airlines before flying.