Los Angeles ? Still high? Sure. On the rise? Not quite.

U.S. gasoline prices were virtually flat over the last three weeks, according to a survey released Sunday.

The average nationwide price for a gallon of self-serve regular was $2.9328 on Friday, according to the Lundberg Survey of 7,000 gas stations across the country. The previous Lundberg Survey, completed May 19, showed the price at $2.9330 cents a gallon, according to analyst Trilby Lundberg.

The lowest price for gas nationwide was $2.66 a gallon in Wichita, Kan., Lundberg said. The highest, $3.27 a gallon, was in Honolulu.

Lundberg’s previous survey showed the price of self-serve regular falling about 2 cents, from $2.95. That was the first decrease recorded since prices began a steady rise in February.