Ryanair is increasing the number of seats available for passengers to reserve by two additional rows on each flight.
The add-on service has been extended from four to six rows by adding rows 5 and 15 across the fleet from yesterday (Thursday).
This means seats can now be reserved in rows 1, 2, 5, 15, 16 & 17.
The airline charges £10 each way for optional seat reservations, rising to £15 on longer routes such as the Canary Islands.
EasyJet passengers pay between £3 and £12 for allocated seating.
Ryanair’s optional reserved seating includes priority boarding – a service which will continue to be offered at a cost of £5.
A spokesman for the airline said: “Since January, passengers have been able to reserve their preferred seats in the front two rows to ensure a prompt exit on arrival, or in over-wing exits, for extra legroom, from just €10/£10 per flight, which includes priority boarding.
“Our reserved seating service will now include rows 5 and 15, meaning greater choice for all Ryanair passengers.”