Passengers on United Continental Holdings Inc. flights this weekend faced delays and long telephone wait times as United swallowed up Continental's operations, but the company says more flights were on time Sunday than Saturday.
The company combined passenger reservations data including frequent flier accounts from the two airlines early Saturday.
United spokeswoman Megan McCarthy says a quarter of the company's flights on Saturday were delayed 30 minutes or more, but 99 percent of all flights were completed.
She says the company is also telling customers online that if they're trying to reach the airline by phone and they're not flying within 72 hours, they should call back later.
Of domestic United flights Sunday, 83 percent were on time through the afternoon. The company says its on-time goal is 80 percent.
United and Continental merged in 2010 but the company didn't finish merging all its operations until Saturday.
The company, which is based in Chicago, held four dress rehearsals to practice for the switch.