Flights from Knoxville to Barcelona lean towards being more expensive in September. Prices are generally better when you fly from Knoxville to Barcelona in February, with the cheapest ticket starting at $514.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Knoxville to Barcelona as you normally would.
||$466||$818||No cancel fee||70%|
||$554||$1,328||No cancel fee||69%|
||$959||$1,691||No cancel fee||71%|