How many inches is the carry-on suitcase? Analysis of hot topics across the Internet and purchasing guide
Recently, "carry-on suitcase size" has become a hot topic among travel enthusiasts. With the adjustment of aviation policies and the rebound in travel demand, how to choose a suitcase that meets the standards has become a must-do before traveling. This article will combine the hot content of the entire Internet in the past 10 days to provide you with a detailed analysis of the boarding suitcase size standards and provide structured data reference.
1. Background of hot topics across the Internet

According to social media and search engine statistics, topics related to "carrying suitcase size" have soared in popularity in the past 10 days, mainly due to the following reasons:
| hot events | Discuss peak dates | Amount of related topics |
|---|---|---|
| New airline regulations released | 2023-11-05 | 128,000 |
| Double Eleven Suitcase Promotion | 2023-11-08 | 95,000 |
| Baggage disputes on international flights | 2023-11-10 | 152,000 |
2. Mainstream airlines’ boarding box size requirements
The following are the latest cabin size standards announced by the five major domestic airlines (unit: centimeters):
| airline | Sum of length + width + height | Unilateral maximum limit | weight limit |
|---|---|---|---|
| Air China | ≤115cm | ≤55×40×20 | ≤8kg |
| China Southern Airlines | ≤115cm | ≤55×40×20 | ≤7kg |
| China Eastern Airlines | ≤115cm | ≤56×45×25 | ≤10kg |
| Hainan Airlines | ≤115cm | ≤55×40×20 | ≤7kg |
| Shenzhen Airlines | ≤115cm | ≤55×40×20 | ≤5kg |
3. Conversion table between inches and centimeters
Common cabin suitcase sizes on the market are mostly expressed in inches. The following is the conversion data for popular sizes:
| inches | Centimeters (approx.) | Applicable scenarios |
|---|---|---|
| 16 inches | 40×30×15 | Short business trip |
| 18 inches | 45×35×20 | 2-3 days trip |
| 20 inches | 50×38×23 | Mainstream carry-on suitcase |
| 22 inches | 56×40×25 | Some airlines require checked baggage |
4. Ranking of popular boarding bags for Double Eleven 2023
According to e-commerce platform sales data, the following five carry-on suitcases are the most popular among consumers:
| Brand model | Size | Material | price range | Positive rating |
|---|---|---|---|---|
| RIMOWA Cabin S | 20 inches | polycarbonate | 4000-5000 yuan | 98% |
| Samsonite Inova | 20 inches | ABS+PC | 1500-2000 yuan | 97% |
| Diplomat TC-9032 | 18 inches | PC material | 600-800 yuan | 96% |
| Xiaomi 90 points | 20 inches | German Bayer PC | 400-500 yuan | 95% |
| Meilv B76 | 20 inches | ABS+PC | 500-600 yuan | 94% |
5. Purchase suggestions and precautions
1.Preference is given to 20 inches and below: This is the safe size for most airlines to avoid being asked to check it in when boarding.
2.Be aware of international flight differences: Some foreign low-cost airlines (such as Ryanair) require stricter dimensions (usually ≤55×40×20cm).
3.Soft case and hard case selection: Soft cases are easier to fit within size restrictions, while hard cases are more protective but may take up more space.
4.weight control: High-quality materials (such as polycarbonate) can reduce weight while maintaining strength.
5.Extended functions: When choosing a box with an expansion layer, it must still meet aviation standards after expansion.
6. Expert opinions
Travel guru @飞鱼 suggested in a recent live broadcast: "When purchasing a cabin suitcase, it is best to choose a size that is 5% smaller than the airline standard, because the actual measurement includes protruding parts such as wheels and handles. The recently popular 20-inch cabin suitcase actually has a 90% probability of meeting the requirements, but be sure to check the specific parameters before purchasing."
Through the above structured data and analysis, I believe you have a comprehensive understanding of the question "How many inches is the check-in suitcase?" Before traveling, it is recommended to reconfirm the specific requirements of the airline you are traveling on. I wish you a happy journey!
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