Also, he said, states could seek "negotiated discounts" from drug makers.
They could also have sought discounts in the rates charged by their lawyers.
Travelers who booked with the two companies in financial difficulty must produce proof of payment when they seek discounts from other operators.
Instead, they will require travelers seeking discounts merely to fly at off-peak hours and buy their tickets in advance.
The 2003 Medicare law prohibits such direct negotiations, relying instead on private insurers and their agents to seek discounts on prescription drugs.
Advertisers are seeking discounts on its previously prestigious slots.
Some buyers, he said, have already sought discounts.
Across the United States, the recession has dramatically altered consumers' spending habits, driving shoppers to seek bargains and discounts.
Managed-care buyers typically seek deep discounts and give preference to low-priced generic drugs whose patents have expired.
More and more vacationers are seeking significant discounts on hotel rooms in the United States through special clubs or coupon books.