Thursday flights are generally found to be more expensive for flights from Islip to St Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St Louis.
Users have found that booking a flight from Islip to St Louis at least 31 days early can save you up to 96% on average compared to booking a flight this week. If booking 31 days before your flight isn’t an option for you, users have found flights from Islip to St Louis for as little as $374 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $553 for flights departing within the next 3 days.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to St Louis. Flights to St Louis from Islip in August are about $266 on average during August, but can be found for as low as $158.
Unlike in the morning, when flights are generally more expensive, you can save up to 5% on flights from Islip to St Louis by exploring options for tickets at noon.