Cheap flights from Ontario, CA to Key West, FL
Choose between Frontier Airlines, Silver Airways, or Spirit Airlines to find the best price
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Tips to know when travelling to Key West
Cheapest nonstop round-trip | $339 |
---|---|
Most popular airline | Frontier Airlines |
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Travelers usually depart from Ontario International, or Montclair (Ontario) when they travel from Ontario to Key West. The most popular airlines for this route are Frontier Airlines, Silver Airways, Spirit Airlines, Allegiant Air, and Alaska Airlines. Ontario and Key West have 118 direct flights per week.
Check-in for a flight from Ontario to Key West
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 |
Silver Airways | SIL | 3M | No | Opens 24 days before flight Closes 2 hours before flight |
Spirit Airlines | NKS | NK | 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 |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in Key West
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 22°C | 20°C |
February | 23°C | 21°C |
March | 23°C | 22°C |
April | 25°C | 24°C |
May | 26°C | 25°C |
June | 28°C | 27°C |
July | 29°C | 28°C |
August | 29°C | 28°C |
September | 29°C | 28°C |
October | 27°C | 26°C |
November | 25°C | 24°C |
December | 24°C | 22°C |
14 day forecast
Frequently asked questions
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Flights from Ontario
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Flights to Key West
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