While traveling in itself is an excitement, cramped seats can make the journey a pain in your backside. A new survey reveals which airlines offer the least legroom, thereby making those long flights feel even longer. While some offer a bit more space, others are much tighter than expected. Discover which airline came out on top for the tightest squeeze.

Whether it be flying for a holiday or business destination, it can itself prove to be an adventure in its truest sense. But the most irritating factor which makes a good flight an awful experience has to be legroom. You know that feeling—getting into a seat only to realize there is hardly any space for your legs. This discomfort makes a journey feel a lot longer than it really is. With summer travel in full swing, families are taking to the air in droves and hoping for an adequate comfort level aboard their flights. But not all airlines are created equal in terms of legroom—and a recent survey pointed out which airline gives passengers the least legroom.

When buying a ticket, most travelers know that seat size and legroom vary greatly from one carrier to another. If you’re not keen on spending extra money for those “premium seats” with more legroom, then you’ll no doubt be interested in knowing just how much space you’re going to have with a standard ticket. The survey, conducted by consumer group Which?, compared legroom and seat width on 12 popular short-haul airlines flying from the UK.

This is useful intelligence for travelers to know what awaits them before they even get on board.

It viewed specifically “seat pitch”—the inches between your seat and the seat in front of you, a real gauge of how much legroom you’re going to have. And the more space between seats, well, you’re that much more comfortable during the flight. Conversely, small pitches make the space cramped, and the discomfort of flying is then felt more highly on longer trips.

Not all airlines give equal seat pitch. Some are more generous than others. For example, one of the top performers turned out to be Aer Lingus, Lufthansa, and KLM, which had a seat pitch starting at 31 to 33 inches. These companies have a bit more legroom, which might be visible during flights. People flying in airplanes operated by these companies are able to relax during the flight because they can stretch their legs without feeling extremely cramped.

Not all airlines fared quite so well in the survey, however. At the opposite end of the scale, Wizz Air and TUI have the worst legroom, according to a survey, with a seat pitch of just 28 inches. This can make even a short flight uncomfortable because passengers have very little space to move their legs. For travelers on these particular airlines, the journey may seem more of a squeeze than a comfortable journey. However, legroom is not all there is to comfort during a flight. Seat width, or the space between the two armrests of your seat, also came into consideration in the survey. The wider the seat, the more comfortable, particularly on longer flights where cramping can quickly turn to discomfort and fatigue. The survey found that most airlines offer similar seat width of approximately 17 inches. However, some do give a bit more space, such as easyJet, TAP Portugal, and Lufthansa, which have seat widths of 18 inches.

An extra inch doesn’t sound like a lot, but it does make a difference in comfort level during the flight.

Keeping these facts in mind, a passenger might want to rethink booking options. If comfort is held to the greatest premium, flying an airline that gives more generous seat pitches with wider seats may be worth the extra cost. However, for the cheapest possible deal, expect an increasing squeeze, more so with Wizz Air and TUI. Though flying in itself could be very exciting, the comfort of your seat may play a big role in how enjoyable it can turn out to be. Knowing which airlines offer the most and least legroom as this busy summer travel season fills up can help you make a more informed decision. Be it comfort or cost, it’s good to know what one is getting themselves into before boarding a plane. So, next time you book a flight, remember to check both the pitch and width of the seat so you have as comfortable a trip as possible. After all, no one wants to spend their flight feeling cramped and uncomfortable. Safe travels!