Cheap flights from Islip, NY to Harrisburg, PA
Choose between Frontier Airlines, Allegiant Air, or Spirit Airlines to find the best price
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Most popular airline | Frontier Airlines |
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The most popular airlines for this route are Frontier Airlines, Allegiant Air, and Spirit Airlines. Islip and Harrisburg have 22 direct flights per week. When you arrive at Harrisburg, consider visiting Lincoln Memorial, Independence National Historical Park, PA, USA, and National Mall.
Check-in for a flight from Islip to Harrisburg
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 |
Allegiant Air | AAY | G4 | 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 |
Weather in Harrisburg
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 2°C | -4°C |
February | 4°C | -4°C |
March | 9°C | 0°C |
April | 16°C | 5°C |
May | 21°C | 11°C |
June | 26°C | 15°C |
July | 29°C | 19°C |
August | 28°C | 18°C |
September | 24°C | 14°C |
October | 17°C | 8°C |
November | 10°C | 2°C |
December | 5°C | -1°C |
14 day forecast
Frequently asked questions
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