Cheap flights from Ontario, CA to Allentown, PA
Flights starting at £81. Choose between Allegiant Air, Frontier Airlines, or Spirit Airlines to find the best price.
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Tips to know when travelling to Allentown
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Travelers usually depart from Ontario International, or Montclair (Ontario) when they travel from Ontario to Allentown. The most popular airlines for this route are Allegiant Air, Frontier Airlines, Spirit Airlines, United Airlines, and Alaska Airlines. Ontario and Allentown have 111 direct flights per week.
Check-in for a flight from Ontario to Allentown
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
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 |
United Airlines | UAL | UA | Yes | No |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 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
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