Saving on airfare with a low-cost carrier, only to be charged at the airport because your luggage is oversized – this happens every day. A 20-inch carry-on isn't guaranteed to make it onto the plane; carry-on baggage regulations vary significantly among low-cost airlines, so it's crucial to understand them before buying.
Why "20 inches" doesn't always mean "carry-on approved"
The "inch" measurement of luggage refers to the height of the suitcase body itself. However, airline carry-on regulations typically consider the "sum of all three dimensions" or "individual maximum limits for length × width × height," and usually include the height of wheels and handles. A suitcase that appears to be 20 inches might actually measure 56–58cm in height once wheels and handles are included, potentially exceeding the limits of some low-cost airlines.
Comparison of Carry-on Baggage Regulations for Common Low-Cost Airlines in Taiwan
Below are the carry-on baggage regulations for various low-cost airlines. This information is for reference only; please be sure to check the latest regulations on each airline's official website before departure.
| Airline | Three-Dimension Limit | Weight Limit | Notes |
|---|---|---|---|
| Scoot | 54×38×23cm | 10kg | Stricter limits |
| Jetstar | 56×36×23cm | 7kg | Strict weight limit |
| AirAsia | 56×36×23cm | 7kg | Additional allowance can be purchased |
| Peach | 55×40×25cm | 7kg | Japanese LCC |
| Vanilla Air | 55×40×25cm | 7kg | Japanese LCC |
| Tigerair Taiwan | 56×36×23cm | 7kg | Taiwanese LCC |
| EVA Air | 56×36×23cm | 7kg | Traditional airline |
| China Airlines | 56×36×23cm | 7kg | Traditional airline |
Essential Dimensions to Confirm Before Buying a 20-inch Carry-on
Before purchasing a carry-on suitcase, it is recommended to confirm the following three actual dimensions (usually specified on the brand's official website), rather than just looking at the "inch" size:
Other Key Considerations for Choosing a 20-inch Carry-on
- Empty weight should ideally be under 3kg; low-cost airlines have strict weight limits, so a lighter empty case allows for more belongings.
- Front-opening carry-ons are especially suitable for business travelers, allowing them to open the case upright to retrieve a laptop during security checks.
- Choose models with expansion features to accommodate more items acquired during the return trip, but be mindful if expansion causes it to exceed size limits.
- TSA-approved locks are standard, ensuring that your lock won't be forcibly broken when entering countries like the US or Japan.
- Opt for silent double-wheel spinners, so you don't disturb others when rolling your luggage through airport terminals and hotel corridors.
NaSaDen Rhine Series 20-inch Carry-on Luggage
NaSaDen Rhine Series 20-inch front-opening carry-on, lightweight at 3 kg, front-opening design, ideal for business travel.
Browse Rhine Series 20-inch Carry-on Luggage