A group representing major U.S. airlines said it is imperative the Federal Aviation Administration accomplish some "quick wins" in the $12.5 billion overhaul of the aging air traffic control system, according to a letter seen by Reuters on Wednesday.

United AIrlines is testing a new way to streamline international connections, and it could finally make checked bags less of a headache for flyers.

It is the second time in two months United has temporarily grounded all of its mainline flights. “United experienced a brief connectivity issue just before midnight Central time on Tuesday, but has since resumed normal operations,” a spokesperson for the airline said in a statement to FOX Business.

United Airlines stock soared 125% but faces rising risks from recession, labor issues, and volatility. Click here to read my earnings preview of UAL.

United Airlines has partnered with Instacart to offer free grocery delivery for United MileagePlus members around domestic flights, with additional bonuses and rewards available for new and existing Instacart users who link their accounts.

Transportation Secretary Sean Duffy said that staff absenteeism in the nation's aviation system is a concern, but added that the current effects are limited.

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