格安 かくやす航空 こうくう けんではありませんでした
kakuyasu kō kūkendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 格安航空券

1. Was not a low-cost airline ticket.; Was not an inexpensive airline ticket.

Past/Perfective
Negative
Polite
Formal Register