Currently, the most affordable month to book a Frontier flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport in September, with an average price of $253. Conversely, traveling with Frontier from Philadelphia to San Juan Luis Munoz Marin Intl Airport in March will be the most expensive, with an average cost of $339. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
$278
February
$286
March
$339
April
$304
May
$283
June
$319
July
$335
August
$279
September
$253
October
$265
November
$300
December
$301
SJU Temperature | 77 - 82.4 °F |
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If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).
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