Currently, April is the cheapest month in which you can book a flight to Saint Thomas Island (average of $388). Flying to Saint Thomas Island in July will prove the most costly (average of $649). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.
January
$391
February
$433
March
$461
April
$388
May
$401
June
$643
July
$649
August
$510
September
$448
October
$428
November
$503
December
$545