Travelers have found that booking a Tuesday departure is the best way to save up to 62% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.
One of the essential ways to save on airfare from Philadelphia to Cologne is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 17% on airfare.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, March can be a great choice for travel to Cologne. Flights to Cologne from Philadelphia in March are about $1,044 on average during March, but can be found for as low as $524.