Fly carry-on only
What airlines actually measure, what the rules actually say, and what it costs when you get it wrong. Thirteen sections, every figure sourced and every rule of thumb labelled.
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linear inches, the limit most airlines share, and the one number the whole guide argues with.
A look inside
Every page leads with one chart and ends with its source. This is page 02.
The industry standard is not actually standard
Carrier pages, TSA, FAA and SITA, each cited on the page with a verified date.
Rules of thumb like 3-5-7 are marked as heuristics, not data, and the guide says where they stop working.
Every figure carries the date it was verified. This edition: 2026-10-08.
What's in the guide
Thirteen sections, from cabin-bag limits to lounge access.
- 01No standard cabin bag sizeCabin bag
- 02Personal items vary the mostPersonal item
- 03Weight is what gets enforcedWeight
- 04The 3-1-1 rule, exactly as writtenLiquids
- 05Power banks: the new liquids ruleBatteries
- 06The EU cabin bag dealEU rules
- 07What checking a bag costs you nowChecked bags
- 08Domestic flights lose fewer bagsMishandling
- 09The 3-5-7 rule and its limitsPacking math
- 10Four decisions for your carry-onDecisions
- 11Pre-flight carry-on checklistChecklist
- 12Is a Priority Pass worth it?Lounges
- 13What is actually free inside a loungeLounges
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