The Ultimate Guide to Measuring Your Underseat Luggage for Airline Travel

The Travel Yard is reader-supported.  When you buy something through our links, we may earn a commission. 

measuring luggage

Travel can be smooth sailing if you avoid baggage hassles. A key to a stress-free experience is ensuring your underseat luggage fits the airline’s size requirements. This guide will equip you with everything you need to know about measuring your underseat luggage, including tips, common questions, and a step-by-step guide.

image 1

Key Takeaways

  • Familiarize yourself with airline underseat luggage dimensions to ensure your bag fits the required specifications.

  • Learn effective measurement techniques to accurately determine the size of your underseat luggage.

  • Discover strategies to maximize your underseat space and avoid unexpected baggage charges.

  • Stay informed about the latest airline policies and guidelines to have a stress-free travel experience.

Measuring Your Underseat Luggage – Step by Step Checklist

Before you get started, you will need a measuring tape. A measuring tape is the most accurate tool for measuring your luggage. Ensure it has both inches and centimeters for convenience.

Measuring Your Underseat Luggage

Step 1: Pack Your Bag: Pack your bag as you would for travel to get an accurate measurement with the contents inside.

Step 2: Measure the Length: Place your packed bag on a flat surface. Measure the length from one end to the and the other, ensuring the measuring tape is straight and not bent. This measurement is taken along the longest side of the bag.

Length

Step 3: Measure the Width: of your packed bag from one side to the other. Ensure the measuring tape is straight for an accurate measurement. This is typically the shorter side of the bag.

width 2

Step 4: Measure the Height: Lastly, measure the height of your packed bag from the base to the top. Make sure the bag is fully expanded if it has an expandable feature, and include any protrusions like wheels or handles in your measurement.

Height

Step 5: Check the Measurements: Compare your measurements with the airline’s size restrictions. Most airlines allow bags up to 18 x 14 x 8 inches under the seat. If your bag is too big, find a smaller one or reduce what you have packed.

By following this checklist, you’ll avoid last-minute stress at the airport and ensure your bag meets all the size requirements for a smooth journey.

image

Maximizing Underseat Space:

  • Packing Cubes: Invest in packing cubes or compression packing cubes. These compartmentalize your belongings, keeping them organized and allowing you to fit more in your bag.

  • The Roll, Don’t Fold Approach: Rolling your clothes instead of folding them saves space and minimizes wrinkles.

  • Mini Toiletry Bag: Use a travel-sized toiletry bag filled with TSA-approved containers of your essentials. This keeps toiletries organized and avoids bulky bottles wasting space.

  • Wear Your Bulkiest Items: Consider wearing your bulkiest clothing items, like jackets or boots, on the plane to free up space in your underseat luggage.

Even with a perfectly sized underseat bag, some smart packing tricks can help you utilize every inch of space. Here are some tips to maximize your underseat luggage:

Understanding Airline Underseat Luggage Dimensions

Knowing an airline’s underseat limits is key for smooth air travel. They govern the size and weight of your bag. It’s smart to learn the rules set by big airlines.

Each airline has its own size rules for underseat bags. Typically, the bag should not exceed 18 x 14 x 8 inches. Remember to confirm this with your airline since rules might change.

AirlineMaximum Under Seat Dimensions
American Airlines18 x 14 x 8 inches
Delta AirlinesPurse, briefcase, small backpack
camera bag, diaper bag, laptop bag
Frontier Airlines18 x 14 x 8 inches
Spirit Airlines18 x 14 x 8 inches
Southwest Airlines18.5 x 8.5 x 13.5 inches
United Airlines9 x 10 x 17 inches
JetBlue Airways17 x 13x 8 inches

Underseat vs. Carry-on Luggage: Knowing the Difference

Traveling light can be a smart strategy, but it’s important to understand the difference between underseat luggage and carry-on luggage. Here’s a quick breakdown:

  • Underseat Luggage: This is a small bag designed to fit comfortably under the seat in front of you on the airplane. It’s ideal for short trips or when you want to avoid baggage fees for a larger carry-on. Airlines typically have specific size restrictions for underseat luggage, so measuring your bag beforehand is crucial.

  • Carry-on Luggage: This refers to a larger suitcase or bag that can be stored in the overhead compartment of the airplane. Carry-on luggage allows you to pack more than an underseat bag, but airlines also have size and weight limitations for carry-on items.

By understanding the distinction between underseat and carry-on luggage, you can choose the right option for your travel needs and ensure a smooth check-in process at the airport.

Final Thoughts

Measuring your underseat luggage correctly is crucial for a hassle-free travel experience. By following the steps and tips provided in this guide, you can ensure your bag meets airline requirements, avoid additional fees, and enjoy a smoother journey. Whether you’re a frequent traveler or planning your first trip, understanding how to measure your luggage can save you time, money, and stress. Safe travels!

FAQs

  1. Do airlines prefer hard or soft luggage?

No, Airlines do not have a preference between hard or soft suitcases. Their main concerns are the size and weight of luggage, whether checked or carry-on, rather than the type of material used in construction.

  1. What happens if my suitcase is too big?

If your suitcase is bigger than the airline allows, you might have to pay extra money. Sometimes, you might need to use a smaller bag or pack your stuff in more than one bag. It’s a good idea to check how big your suitcase can be before you go to the airport.

  1. How do they check suitcase size at the airport?

At the airport, they often have special boxes or tools to check if your suitcase is the right size. Sometimes, they might use a tape measure. Some airports even have machines that can measure your bag automatically!

  1. Do you count the wheels when measuring a suitcase?

Yes, you do! When measuring your suitcase, include everything that sticks out, like wheels and handles. The airline wants to know how much space your whole suitcase takes up.

  1. What are “linear inches” and how do we figure them out?

“Linear inches” is just a fancy way of saying the total size of your suitcase. To find this, add up the height, width, and depth of your suitcase. For example, if your suitcase is 20 inches tall, 14 inches wide, and 9 inches deep, the linear inches would be 43 (20 + 14 + 9 = 43).

Sources

American Airlines Carry-on bags
United Airlines Bag Size
Southwest American Airlines Carry-on and Personal Item Policy
Jetblue Bag Info
What are the size restrictions for carry-on bags?

Related Reading

Underseat Luggage Size Chart for Major Airlines [Dimensions, Sizes & More] 2024
Selecting and Packing Your Underseat Carry-On Bag (Personal Item)
10 Best Packing Cubes for Underseat Luggage
10 Best Spirit Underseat Luggage Without Wheels
12 Best Spirit Underseat Bags: Pack Smart, Pay Less
3 Best Frontier Airlines Under Seat Bag With Wheels
Best Hardside International Travel Luggage for Your Next Adventure

Related Articles