Every major US airline’s plus-size policy and where we can improve

• While regulators are taking steps to address airplane seat size issues, advocates say changes aren’t coming quickly enough.
• Some airlines accommodate plus-size travelers with extra space, but there’s no uniform regulation.
• Only a few carriers will reimburse passengers who need to buy a second seat to fly.

Few people say their favorite place to be is in the economy cabin of an airplane. As airlines have made their seat configurations tighter over the years, leg- and even shoulder-room has gotten more cramped.

For larger passengers, the densification of airplane cabins can be even more frustrating.