Currently, the most affordable month to book a Frontier flight from Denver to Philadelphia in October, with an average price of $224. Conversely, traveling with Frontier from Denver to Philadelphia in July will be the most expensive, with an average cost of $309. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
$258
February
$258
March
$281
April
$268
May
$268
June
$298
July
$309
August
$258
September
$246
October
$224
November
$268
December
$253
PHL Temperature | 33.8 - 78.8 °F |
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If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).
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