Cheap flights from Islip, NY to Allentown, PA
Choose between Frontier Airlines, Allegiant Air, or Spirit Airlines to find the best price
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Allentown
Most popular airline | Frontier Airlines |
---|
Sorry, we couldn't find any results
Sorry, we couldn't find any results
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
The most popular airlines for this route are Frontier Airlines, Allegiant Air, Spirit Airlines, Sun Country Airlines, and Silver Airways. Islip and Allentown have 67 direct flights per week.
Check-in for a flight from Islip to Allentown
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 |
Sun Country Airlines | SCX | SY | Yes | No |
Silver Airways | SIL | 3M | No | Opens 24 days before flight Closes 2 hours before flight |
Weather in Allentown
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 2°C | -5°C |
February | 4°C | -4°C |
March | 8°C | 0°C |
April | 15°C | 4°C |
May | 20°C | 10°C |
June | 25°C | 14°C |
July | 29°C | 18°C |
August | 28°C | 17°C |
September | 24°C | 13°C |
October | 17°C | 8°C |
November | 10°C | 1°C |
December | 5°C | -1°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from Islip
- Flights from Islip to Atlanta
- Flights from Islip to West Palm Beach
- Flights from Islip to Orlando
- Flights from Islip to Denver
- Flights from Islip to New York
- Flights from Islip to Las Vegas
- Flights from Islip to Chicago
- Flights from Islip to Miami
- Flights from Islip to Los Angeles
- Flights from Islip to Mexico City
- Flights from Islip to Bogotá
- Flights from Islip to Dallas
- Flights from Islip to Phoenix
- Flights from Islip to Philadelphia
- Flights from Islip to San Francisco
- Flights from Islip to Cancún
- Flights from Islip to Houston
- Flights from Islip to San Juan
- Flights from Islip to Washington, D.C.
- Flights from Islip to Dhaka
Flights to Allentown
- Flights from San Juan to Allentown
- Flights from Shreveport to Allentown
- Flights from Manchester to Allentown
- Flights from Indianapolis to Allentown
- Flights from London to Allentown
- Flights from New York to Allentown
- Flights from Orlando to Allentown
- Flights from Las Vegas to Allentown
- Flights from Denver to Allentown
- Flights from Chicago to Allentown
- Flights from Miami to Allentown
- Flights from Los Angeles to Allentown
- Flights from Atlanta to Allentown
- Flights from Mexico City to Allentown
- Flights from Bogotá to Allentown
- Flights from Dallas to Allentown
- Flights from Phoenix to Allentown
- Flights from Philadelphia to Allentown
- Flights from San Francisco to Allentown
- Flights from Cancún to Allentown
Popular routes
- Flights from London to Alicante
- Flights from Islamabad to Chiang Mai
- Flights from London to Tirana
- Flights from Ironwood to Honolulu
- Flights from Grand Rapids to Arcata
- Flights from Cluj-Napoca to Gaborone
- Flights from León to Port Elizabeth
- Flights from Colorado Springs to Long Beach
- Flights from Catania to Bridgetown
- Flights from Bora Bora to Douala
- Flights from Pristina to Bonaire
- Flights from Beirut to Oradea
- Flights from Flores to Barcelona