Delta Air Lines' (DAL.N) landmark pilots contract in March, which offers $7 billion in higher pay and benefits, has put pressure on rival carriers to hand out similar deals ahead of a busy summer travel season.
Earlier this month, the company's pilots union voted to authorize a strike vote - a bargaining tactic unions have been using in contract negotiations.
However, Kirby did not reveal details included in the proposal, other than to say United would top the recent deals agreed to by its two biggest rivals.
"We have disagreed with the company on the costing of items and they, in our opinion, have inflated many.
Meanwhile, shares of United Airlines rose 3.5% in afternoon trade, benefiting from broader market gains.
Persons:
Scott Kirby, Kirby, Priyamvada C, Nathan Gomes, Allison Lampert, Shilpi Majumdar, Shailesh Kuber, Pooja Desai
Organizations:
United Airlines Holdings Inc, Delta Air Lines, Bloomberg, Air Line Pilots Association, Reuters, United Airlines, Thomson
Locations:
North America, Chicago