Carry-On Sized

By Airline & Size Rules

Matching bags to specific airline and international carry-on size and weight allowances, from US majors to budget and IATA-standard carriers.

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What Are the Carry-On Size Limits by Airline in 2026?

Carry-on size limits vary significantly by airline, and packing the wrong bag can mean gate fees or a checked-bag delay. This reference guide maps published carry-on and personal-item limits across US majors, budget carriers, and international airlines for 2026.

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How to Choose a Carry-On That Fits International 55cm Size Limits

The IATA-recommended 55 x 40 x 20 cm carry-on limit is used as a reference by European and international carriers — but its real-world application varies by airline. This guide explains how to pick a carry-on whose published dimensions clear the most common international allowances.

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Spirit vs Frontier Personal Item Bags: Which Fits the Free Allowance?

Spirit and Frontier both offer one free personal item, but their dimension limits differ in a key way. We map each airline's published rules to real bag dimensions so you know exactly which underseat bags fly free.

Budget-Airline Personal Item Bags Under $50 on Amazon

Compact personal-item bags under $50 sized with budget-airline limits in mind.

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