Trip cost favors the smaller aircraft
A narrow-body generally burns less fuel, needs fewer crew and attracts lower absolute handling costs. If demand is limited, that lower trip cost is valuable.
Seat cost can favor the wide-body
Spreading fuel, crew and ownership costs across hundreds of seats can lower unit cost when the aircraft is well filled. Wide-bodies are designed to move large volumes efficiently.
Cargo strengthens the wide-body case
Large lower holds can carry substantial freight alongside passenger baggage. Cargo revenue can materially change long-haul economics.
Frequency changes the comparison
Two narrow-body flights may offer customers better departure choices but require two crews, two airport movements and more total cycles. One wide-body flight can concentrate capacity.
Range and payload matter
Some long routes require the fuel and payload capability of a wide-body, while new long-range narrow-bodies can now serve thinner intercontinental markets that once needed larger jets.
The best aircraft is the one that fits demand
Neither category is inherently cheaper in every context. Airlines compare trip cost, seat cost, cargo, frequency and expected fare levels for each market.
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