Due to multiple factors, expect to potentially pay more when booking in June. For low rates, May can be a great choice for travel to Luxembourg. Flights to Luxembourg from Philadelphia in May are about $785 on average during May, but can be found for as low as $397.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Luxembourg as you normally would.
||$584||$835||No cancel fee||71%|
||$613||$910||No cancel fee||70%|
||$622||$969||No cancel fee||76%|