Southwest Checked Bag Dimension – The Complete 2025 Baggage Size Guide

By Author: flightsquest
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When preparing for a trip, understanding your airline’s baggage policy is essential — and Southwest checked bag dimension rules are among the most traveler-friendly in the industry. Southwest Airlines is one of the few U.S. carriers offering two free checked bags on every ticket, but you still need to ensure your luggage meets the size and weight restrictions to avoid extra fees.

In this detailed guide, we’ll explain the Southwest checked bag dimension, the allowed weight limit, oversize rules, and expert packing tips to help you travel confidently and cost-effectively.

Oversize and Overweight Baggage Rules

If your luggage exceeds the Southwest checked bag dimension of 62 inches, it is categorized as oversized. Similarly, bags weighing more than 50 pounds are considered overweight.

Oversize baggage fee: $125 per bag

Overweight baggage fee: $125 per bag

Bags exceeding 80 inches or 100 pounds: Not accepted

Keeping your luggage within these limits saves you both money and hassle.