Lounge Frog guide

Frontier Airlines Airbus A321neo (243 seats) vs Lufthansa Airbus A321neo (215 seats)

Frontier Airlines Airbus A321neo (243 seats) has 243 seats and Lufthansa Airbus A321neo (215 seats) has 215. Only the second has Business.

Cabins side by side

Cabin	Seats	Rows	Layout	Seat
Frontier Airlines · 243 seatsUpFront Plus	12	1–2	3-3	—
Frontier Airlines · 243 seatsEconomy	231	3–41	3-3	—
Lufthansa · 215 seatsBusiness Class	42	1–7	3-3	Recliner
Lufthansa · 215 seatsEconomy Class	173	8–39	3-3	Recliner

243 seats: 21 good, 18 mixed, 11 to avoid

Row 1, seats A and C (UpFront Plus): upFront Plus front row: extra legroom, the middle seat kept empty and nobody reclining into you, though the forward lavatory is just ahead on this side. Frontier offers no seatbelt extensions in row 1 and doesn't seat infants there.
Row 1, seats D and F (UpFront Plus): upFront Plus front row: extra legroom, the middle seat kept empty and nobody reclining into you; the block ahead on this side is likely the galley. Frontier offers no seatbelt extensions in row 1 and doesn't seat infants there.
Row 2, seats A, C, D and F (UpFront Plus): upFront Plus: extra legroom near the front, and Frontier guarantees the middle seat beside you stays empty.
Row 3, seats A, C, D and F (Economy): premium row right behind UpFront Plus: extra legroom close to the front, without the UpFront Plus price.

Row 17, seats A, B, C, D, E and F (Economy): row in front of the overwing exits: recline is likely limited (Frontier's map doesn't say), with no exit-row legroom of its own.
Row 28, seats A, B, C, D and E (Economy): row in front of the mid-cabin exit door: recline is likely limited (Frontier's map doesn't say).

215 seats: 12 good, 13 mixed, 18 to avoid

Row 19, seat A (Economy Class): second overwing exit row: more legroom as marked, and the seat can recline.
Rows 19 and 29, seats B, C, D and E (Economy Class): exit row with extra legroom
Row 19, seat F (Economy Class): second overwing exit row with more legroom.
Row 29, seat A (Economy Class): exit row by the rear overwing door, marked with more legroom.

Row 16, seats A, B, C, D, E and F (Economy Class): in front of an exit row, so recline is likely limited
Row 26, seats D and E (Economy Class): next to a lavatory, with queues, noise and flushing
Row 26, seat F (Economy Class): backs onto the mid-cabin lavatory: limited recline and foot traffic.
Row 28, seats A, B and C (Economy Class): in front of an exit row, so recline is likely limited