The Greater Bay Airlines baggage policy runs on weight, not the linear inch system most US travelers expect. Carry-on bags are capped at 7kg, about 15lbs, one of the tightest cabin limits of any Hong Kong carrier. The airline does not just post that number: go over it and the charge is HKD780, and travelers on the Hong Kong to Bangkok route say the check is real.
Greater Bay Airlines is a separate carrier from Cathay Pacific, Hong Kong Airlines and HK Express. All four fly out of the same Hong Kong airport, but they are four different companies. Greater Bay Airlines launched to serve Greater Bay Area routes and markets itself as a value carrier, closer in style to a budget airline than a legacy one.
Carry-on and personal item allowance
The cabin bag limit is 115cm total dimension, about 45 inches counting handles and wheels. Weight is capped at 7kg or 15lbs. Passengers also get one small personal item, such as a handbag, laptop bag or small backpack, at no charge.
There is no published weight limit on the personal item beyond fitting under the seat. An extra or oversized carry-on piece costs HKD240, if the gate allows it on at all. Packing light matters more here than on many other Hong Kong carriers.
Checked baggage by fare tier
Checked allowance depends entirely on which fare a traveler books. The gap between tiers is large, and it is the core of the Greater Bay Airlines baggage policy that most travelers miss. The table below reflects what the airline publishes for its own flights.
| Fare | Checked allowance |
|---|---|
| Premium GO | 40kg across 2 pieces |
| Flex GO | 40kg across 2 pieces |
| Value GO | 30kg across 2 pieces |
| GO GO | 1 piece, 20kg |
| GO GO Promo | No checked bag included |
Each piece cannot exceed 32kg or 158cm total dimension. Anything between 158cm and 203cm counts as oversized. Bags over 203cm are refused outright.
GO GO Promo flyers get no checked bag at all. One has to be purchased separately, and that often costs more than adding it during booking.
Excess and overweight fees
On the airline’s own flights, an extra piece or an overweight bag up to 23kg costs HKD780. Oversized baggage runs HKD240 per piece, the same as an extra carry-on bag.
When the itinerary connects onto a partner airline, the fees change. Extra or overweight pieces cost USD200 each, and oversized or extra carry-on items cost USD60. Check which leg the higher fee applies to before packing.
What travelers actually run into at the gate
Forum accounts from Hong Kong to Bangkok flyers describe the carry-on check as routine, not occasional. One traveler said the airline is strict about the single bag and the 7kg cutoff. Going over it triggered a charge close to the posted HKD780 rate, not a warning.
That matches the published fee table, so enforcement lines up with the rule on paper. The same discussions raise more complaints about delays than about baggage. Still, a traveler used to packing 8 or 9kg on other airlines should not assume the same room here.
Special and oversized items
Sports equipment beyond standard dimensions needs approval at least 72 hours before departure. Musical instruments and mobility devices have their own handling rules. Those sit on the carrier’s own site, separate from the general checked terms.
The bottom line
The Greater Bay Airlines baggage policy rewards travelers who check their fare tier before they pack, not after. A 7kg carry-on limit gets enforced in practice. Checked allowance swings from 40kg to zero depending on fare, and fees jump the moment a partner airline enters the trip.
Confirm the fare and the connection first. A baggage fee calculator helps when the trip involves more than one carrier.
For the rules that apply everywhere, see carry-on rules and checked baggage basics. Travelers comparing Hong Kong departures can also look at Hong Kong Airlines, whose checked allowance follows a more conventional structure than this carrier’s Greater Bay Airlines baggage policy does.
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