Cheap flights from Denver, CO to Islip, NY
Choose between Frontier Airlines, Spirit Airlines, or BREEZE to find the best price
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Tips to know when travelling to Islip
Most popular airline | Frontier Airlines |
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The most popular airlines for this route are Frontier Airlines, Spirit Airlines, BREEZE, JetBlue Airways, and Sun Country Airlines. Denver and Islip have 108 direct flights per week. When you arrive at Islip, consider visiting Manhattan Island, Metropolitan Museum of Art, Staten Island, Times Square, Empire State Building, and Statue of Liberty.
Check-in for a flight from Denver to Islip
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
BREEZE | MX | No | No | |
JetBlue Airways | JBU | B6 | No | Opens 24 days before flight Closes 2 hours before flight |
Sun Country Airlines | SCX | SY | Yes | No |
Weather in Islip
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 3°C | -1°C |
February | 4°C | 0°C |
March | 7°C | 2°C |
April | 12°C | 7°C |
May | 17°C | 12°C |
June | 22°C | 17°C |
July | 26°C | 21°C |
August | 26°C | 21°C |
September | 22°C | 18°C |
October | 17°C | 13°C |
November | 11°C | 6°C |
December | 7°C | 2°C |
14 day forecast
Frequently asked questions
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