The size of suitcase you need depends on whether you plan to carry it on or check it in, as well as the length of your trip and the airline you are flying with. Here are some general guidelines based on the search results:

Carry-on luggage:

• Ideally, your travel suitcase should measure 22” x 9” x 14” or less to fit into the overhead compartments on most airlines.
• As a general rule, opt for a carry-on no larger than 45” (length + width + height) .
• Most U.S. airlines have carry-on restrictions of 22" x 14" x 9", or 45 linear inches.
• Some international airlines post smaller carry-on size limits than domestic airlines, so always check with your airline for the most current rules.

Checked luggage:

• As a general rule, opt for a checked bag no larger than 62”, which is standard for most US airlines.
• The most popular size check-in luggage is 25- to 29-inches tall and various widths.
• Medium-sized check-in luggage measures 25-26” tall and around 18” wide.
• Large check-in luggage is great for longer trips, lots of gear or multiple people, and measures 26” and taller.
• Unless you’re planning to move abroad or will be in a single location for an extended period of time, you should never use a suitcase that’s over 27″ .

Ultimately, the size of suitcase you need will depend on your specific travel needs and the airline you are flying with. Be sure to check with your airline for their specific size restrictions before purchasing a suitcase.