Travelers have found it’s best to book a flight 35 days in advance to save up to 62% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 35 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Islip, New York to Copenhagen 1-2 weeks in advance for as low as $695, or $938 for flights within the next 24 hours.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip, New York to Copenhagen as you normally would.