United Airlines should look in the “proverbial mirror” when it comes to its allegations that poor operations at Newark Liberty International Airport are the the fault of smaller competitors, JetBlue Airways said Monday.

“Instead of criticizing low-fare/low-cost carriers, United should look in the proverbial mirror first when seeking a carrier to blame for operational issues and congestion at [Newark]: United, with 72 percent of operations at [Newark], is far and away the leading carrier at [Newark] with the most responsibility for operations at the airport,” JetBlue Senior Vice President of Government Affairs Robert Land said in a letter to U.S. Department of Transportation officials.

The airline’s arguments mirror those made by Spirit Airlines, both of which United has blamed for a recent spike delays and cancellations at Newark. Spirit Vice President of Network Planning John Kirby recently told Airline Weekly that United was taking “liberties” in blaming its competitors when the mainline carrier so clearly dominates Newark.

JetBlue offers several proposals to improve operations at Newark. For one, the airline says officials should wait for the new Terminal A to open later this year, and see if the facility — plus the end of construction — improve operations. If that does not work, the Federal Aviation Administration should “convene a schedule reduction meeting” to ensure that there are no more than the recommended maximum of 79 flights per hour. Other recommendations include the approval of simultaneous dual approaches on Newark’s two main runways to increase throughput.

No matter what comes of the war of words between United, and JetBlue and Spirit one thing is clear: travelers best be prepared for flight delays and cancellations at Newark this summer.

Tags: jetblue airways, newark airport, spirit airlines, united airlines