Sơ đồ chỗ ngồi Southwest Airlines Boeing 737-800

Southwest 737-800 under the assigned-seating model live for travel from 2026-01-27. Single Economy class sold in three LOCATION tiers, not three hardware classes: Extra Legroom (~34" pitch, genuine extra pitch), Preferred (~31", same hardware as Standard, priced for its forward location) and Standard (~31"). Modeled as ONE economy cabin (canonicalTier 'economy'), identical structural treatment to the Southwest 737 MAX 8 (wn-7m8-175y): the Extra Legroom pitch difference is captured with a distinct seatType (category extra_legroom) applied via per-seat seatTypeId override; Preferred is captured purely with the preferred_zone + paid_seat flags because its hardware is identical to Standard. Tier ROW ZONES follow southwest.com wording that Extra Legroom sits 'at the front of the cabin and near the exit rows': EL front rows 1-5; Preferred rows 6-12; EL exit rows 13-15 (14 & 15 are the over-wing exit rows); Standard rows 16-30. DERIVATION: Southwest publishes no exact per-row seat map or per-row pitch for the 737-800. The 737-800 shares the 39.5 m fuselage of the 737-8/MAX 8 (per the Boeing NG/MAX ACAP tables) and the same two-pair over-wing exit stations, so the row grid, wing band (rows 13-17) and exit rows (14 & 15) mirror the MAX 8 exactly. 175 seats cannot fill a pure 3-3 grid (175 = 6*29 + 1), so the two aft-most rows are modeled as narrowed by the rear galley/lavatory monument (row 29 = 4 seats, row 30 = 3 seats); the precise location of the removed seats is a structural inference, not a Southwest-published fact. Pitch values (34" Extra Legroom, 31" Standard/Preferred) are marked approximate; Southwest publishes only 'up to five additional inches' of pitch (stated for the 737-700) and 'seat pitch will vary by aircraft type'. Seat width and recline are unpublished estimates (unsourced). AMENITIES differ from the MAX 8: the 737-800 fleet is all older Boeing NG airframes, so in-seat USB power exists only on retrofitted airframes and the majority of the fleet (Boeing Sky Interior) has no in-seat power; WiFi is transitioning to Starlink and availability varies by airframe. Row 30 is rated 'avoid' per AUTHORING.md §3 (non-reclining last row backing onto the aft lavatories = compounding drawbacks).