Seats Frog guide
Boeing 737-900ER seat maps
5 Boeing 737-900ER seat maps from 3 airlines, from 173 to 180 seats, with every seat rated good, mixed or bad.
Seat maps updated October 2026.
| Airline and layout | Seats | Cabins | Economy | Rated good |
|---|---|---|---|---|
| Delta Air Lines739, 180 seats | 180 | 20 First27 Extra legroom133 Economy | 3-3 · 30" pitch · 17.3" wide | 6% |
| Korean Air8 Prestige · 165 Economy | 173 | 8 Business165 Economy | 3-3 · 17.2" wide | 16% |
| United AirlinesVersion 1, 179 seats | 179 | 20 First159 Economy | 3-3 · 30" pitch · 17.3" wide | 22% |
| United AirlinesVersion 2, 179 seats | 179 | 20 First159 Economy | 3-3 · 30" pitch · 17.3" wide | 20% |
| United AirlinesVersion 3, 179 seats | 179 | 20 First159 Economy | 3-3 · 30" pitch · 17" wide | 23% |
Seats rated good have only upsides (extra legroom, space beside the seat, privacy). Open a layout for the drawn map and the reason for every seat. Or compare two side by side.
Quick answers
How many seats does a Boeing 737-900ER have?
It depends on the airline: of the 5 Boeing 737-900ER layouts on Seats Frog, Korean Air's has the fewest seats (173) and Delta Air Lines's the most (180).
How many seats across is Economy on the Boeing 737-900ER?
Every Boeing 737-900ER layout here seats Economy 3-3 across.
Which airlines fly the Boeing 737-900ER with First Class?
Delta Air Lines, United Airlines have a First cabin on the Boeing 737-900ER.