It is possible to book a seat on flights with the low-cost airline from Luton and Glasgow to Alicante as well as from Luton to Malaga, Sharm el Sheikh (Egypt) and Istanbul.
If deemed successful it will be rolled out to all Easyjet routes.
The standard fee is £3 (€3.65), except in the first six rows which are £8 (€9.75).
Skyscanner polled more than 1,000 airline passengers on their seat preferences, aside from extra legroom seats. While 6A, a window seat near the front of the plane, was the most popular; 31E, a middle seat towards the back, was the least popular.
Six in 10 passengers prefer a window seat, while one per cent would choose the middle seat.
While 46 per cent chose the front section of the plane, seven per cent said they would choose the back row.
Sixty-two per cent preferred even seat numbers.
“There is always a great rush to get on board and get that favoured seat and I think it is really interesting that there are so many differing opinions on this,” said Skyscanner’s travel editor, Sam Baldwin.
“Anecdotally some passengers seem to opt for the middle section near the wings where they are less likely to feel turbulence while others want to be near the front for ease of getting off the plane, less engine noise or even to get a better choice of food available.
The window seems a popular choice for those looking to sleep, especially for long haul flights, while those who take more trips to the toilet prefer to aisle so as not to disturb fellow passengers and the aisle is also popular for tall passengers looking to stretch their legs.
Frequent flyers have also reported that the left hand side of the plane is best as the windows are off centre, allowing for wall space to lean on”.
“I just hope that the low-cost carriers don’t find out that there is such demand for seat 6A and start charging a premium for it,”
This survey supports previous studies which have found that the front six rows of the plane are the most popular, taking 45% of the votes.