By Rajesh Kumar Singh CHICAGO, March 25 (Reuters) - When Delta Air Lines bought an aging refinery outside Philadelphia in 2012, the move looked unusual. Most carriers buy jet fuel from suppliers. Delta instead bought a refinery that processes crude oil into jet fuel and other products.

The Atlanta-based airline is granting travel waivers this week because of the ongoing TSA staffing crisis affecting its hometown hub.

As Delta Airlines suspended “specialty services” for members of Congress amid the ongoing partial shutdown of the federal government, other major airlines have remained silent on the matter. A Delta spokesperson said in a statement provided to the Daily Caller News Foundation on Wednesday that “due to the impact on resources from the longstanding government shutdown,

JetBlue Airways (NASDAQ:JBLU) stock surged 18% in Wednesday trading, with shares climbing toward the key $5 level from an open of $4.19. That kind of move is unusual for any stock; for an airline, it’s extraordinary.

United Airlines CEO Scott Kirby told CBS News that it's "unconscionable" that lawmakers haven't made a deal yet to fund the Department of Homeland Security as a partial government shutdown drags on and TSA workers go unpaid.

ICE Agents are stepping in at Delta Air Lines' busiest hubs after TSA wait times soared throughout the weekend.

As a partial government shutdown continues, one major airline has suspended services for flying lawmakers as travel chaos builds at U.S. airports.