More travel executives get their mission-critical industry news from Skift than any other source on the planet.Tell me more The pandemic caused a plunge in demand that has stumped the software that airlines use for pricing. The airlines have been responding by changing how they forecast demand. The changes are shaking up revenue management, a specialty that airlines have spent hundreds of millions of dollars on in the past decade. While demand has plunged more than 70 percent on many routes, airlines have tried to keep their pricing power. United cut its domestic U.S. one-way ticket prices only 10 percent year-over-year to $228, including taxes and fees, during the second quarter, according to most recent data yet released by the U.S. Department of Transportation and analyzed by travel data company Cirium. Frontier trimmed fares only 8 percent on average, to $68. Delta trimmed 14 percent to $208, on average.