Are FLY4 seat requests guaranteed?
No. FLY4 tries to honor advance requests but may reassign seats for operational, safety or security reasons. For another airline’s ticket, use that airline’s conditions and booking service.

FLY4 Airlines is an Irish airline created by Enter Air and TUI to supply aircraft and crews to other airlines and tour operators. It began operations in March 2024 and uses Boeing 737-800 aircraft for leasing and charter work. It does not sell tickets directly to individual passengers.
Open the Fly4 Boeing 737-800 seat map to explore its seats.
No. FLY4 tries to honor advance requests but may reassign seats for operational, safety or security reasons. For another airline’s ticket, use that airline’s conditions and booking service.
For FFA-numbered flights, the published allowance is one cabin bag up to 8 kg and 56 × 45 × 25 cm, plus a small personal item, and 23 kg checked baggage subject to route payload restrictions. Flights booked under another airline’s code follow that airline’s conditions.
Tell the ticket issuer what assistance and equipment you need when booking, and no later than 48 hours before departure. Seating arrangements depend on the requirements and aircraft; a particular seat is not guaranteed.