How does Delta's 777 economy compare to American and United?

Delta One Suite: Rows 1–12, 1-2-1, sliding door, 78 in flat bed
Delta Premium Select: Rows 20–23, 2-4-2, 38 in pitch
Delta Comfort+: Rows 24–28, 2-4-2, 34–35 in pitch, free drinks
Main Cabin: Rows 29–57, 2-4-2 (9-abreast), 31–32 in — wider than AA/United's 3-4-3
Total seats: ~304

Question

Accepted Answer

Delta's 777 economy uses a 2-4-2 layout (9 across, ~18 in wide) while American and United often use 3-4-3 (10 across, ~17 in). Delta's seats are approximately 1 inch wider. On a 10+ hour flight this makes a meaningful comfort difference.

Delta Air Lines Boeing 777 Seat Map

Cabin Summary