Trip Planning Air Travel Airline-by-Airline Guide to Seatbelt Length Written by Nancy Parode Facebook Twitter Nancy Parode is a freelance travel writer who has lived abroad three times. Tripsavvy's Editorial Guidelines Nancy Parode Updated 04/08/20 Fact-Checked by Reviewed on 04/08/20 Jillian Dara Facebook Twitter Jillian Dara is a freelance travel writer and fact checker. Her work has appeared in Travel + Leisure, USA Today 10Best, Michelin Guide, Hemispheres, DuJour, and Jetsetter. About TripSavvy Fact-Checking Jillian Dara Share Pin Email TripSavvy Seat belt length varies by airline and by type of aircraft. While you can find out seat widths and pitches online, many airlines do not provide information about seat belt lengths on their websites. If you're concerned about the length of a seat belt, the best way to get current seat belt information is by contacting your airline. Passengers are required by law to wear a seat belt on the plane unless the seatbelt sign is turned off. While you can buy your own seat belt extender, there is no guarantee that it will be allowed through security and there's no guarantee you will be able to use it on the plane. If the belt doesn't close, you may be asked to deplane. To avoid last-minute boarding problems, you should call, email, or start an online chat with your airline whenever you have any questions or concerns about your tickets, itinerary, or flight. This process may take some time, particularly if you contact your airline by email or happen to talk with a customer service agent who does not know the answer to your question. Ask all your questions before you buy your tickets so that you have plenty of time to get the answers you need and make informed decisions about which tickets to buy. Length By law, airlines can establish policies for passengers that are overweight. These passengers often called "passengers of size" or "passengers requiring extra space," can be required to purchase a ticket for a second seat if they meet certain criteria, like if the passenger's body extends a certain distance beyond their seat and requires a seat belt extender, or if a passenger cannot perform a specific action or combination of actions such as lowering both armrests comfortably, or lowering the armrests and fastening a seat belt with an extender. Some airlines do not require larger passengers to purchase a second seat, but if other passengers in the row raise complaints, larger passengers might be asked to move to a different seat. If you cannot comply with your airline's policy and cannot purchase a second seat because the flight is sold out, you may be denied boarding until the next day a flight with unsold seats is available. Airlines usually publish information about these policies in their Contract of Carriage. Your airline's Contract of Carriage, the legal document that spells out the airline's obligations to its customers, is available online or at the ticket counter. Extenders Several airlines have special policies that apply to the use of seat belt extenders. For example, Delta Air Lines does not permit passengers to use their own personal extenders, citing "FAA regulations" as the reason for this ban. Southwest Airlines also bars passengers from bringing their own seat belt extenders. Alaska Airlines provides an extension of 25 inches once onboard but does not allow passengers to use them if they are sitting in an exit row. Many airlines offer their own seat belt extenders to passengers who request them, but it's advisable to talk to the airline in advance or speak to the gate agents prior to boarding to ensure that there is a seatbelt extender available. North American Airlines To help you find out the seat belt lengths for airlines, we contacted several North American airlines to find out how long their seat belts are, on average, and whether those airlines provide seat belt extenders. Not all North American airlines are represented in this seat belt length table. While this information is current as of this writing, please bear in mind that airlines frequently purchase new aircraft and upgrade their existing equipment on a regular basis, so your experience may differ from the data presented here. Contact your airline to get the best available information for your aircraft. Lengths by Airline All lengths are given in inches. Airline Seat Belt Length Extenders Extender Length Aeroméxico 51 Yes 22 Alaska Airlines 46 Yes 25 Allegiant Air 40 Yes 21 American Airlines 45 Yes Unknown Delta Air Lines 35 - 38 Yes 12 Hawaiian Airlines 51 Yes 20 JetBlue 42 - 49.5 Yes 25 Southwest Airlines 39 Yes 24 United Airlines 31 Must Pre-reserve 25 Virgin America 43.7 Yes 25 Was this page helpful? Thanks for letting us know! Share Pin Email Tell us why! Submit Do Larger Airline Passengers Need to Buy a Second Seat? Know Your Rights If Your Flight is Canceled or Delayed How to Travel Internationally With Your Pet What Are Your Rights if Your Flight Is Canceled? Everthing You Need to Know About Air Travel With Your Dog Check out How Europe's Major Carriers Handle Passengers of Size How the Top 10 American Carriers Handle Overweight Travelers Air Travel With Portable Oxygen Concentrators How to Request a Wheelchair or Cart at the Airport What to Do When Your Flight Is Canceled Due to Weather Car Seat Policies for the Top 15 North American Airlines The Truth About Being Bumped off an Airline Flight Airline Ticketing Policies for Traveling With a Baby Infant Bassinet Policies on Popular International Airline Carriers Smart Parent's Guide to Flying With Kids Can You Bring Your Pet Bird on Your Flight?