Cheap flights from Ontario to Florida Keys from $49
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Florida Keys departing on 7/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from Ontario to Florida Keys
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Delta flights from Ontario to Florida Keys
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How to get the cheapest flight ticket from Ontario to Florida Keys
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Florida Keys?
The month of August is another great option to travel to Florida Keys, with average flight prices from Ontario averaging around $336.
What is the cheapest day to depart on your flight to Florida Keys?
The cheapest day to depart from Ontario to Florida Keys is on a Wednesday when prices can be found for as low as $352. The most expensive day to fly to Florida Keys is Friday, with ticket prices averaging around $429.
What is the cheapest time of day to depart on your flight to Florida Keys?
According to our data, the cheapest time of day to fly to Florida Keys is in the afternoon. momondo users have found flights departing from Ontario to Florida Keys in the afternoon for as low as $326. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $396.
How far in advance should I book a flight to Florida Keys?
You are more likely to see cheaper flights to Florida Keys from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $430 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Ontario for as low as $360 on momondo.
What is the cheapest airline that flies from Ontario to Florida Keys?
Frontier and Delta are the most popular carriers operating from Ontario to Florida Keys
What airlines fly to Florida Keys?
American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Florida Keys from Ontario according to our data. American Airlines is the first choice among our users, with 78% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.
Cheap Ontario to Florida Keys flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Florida Keys
When did momondo last update prices for flights from Ontario Airport to Florida Keys?
Prices for flights from Ontario Airport to Florida Keys refresh daily.
How many operators does momondo search for flights from Ontario Airport to Florida Keys?
As of July 2025, there are 5 operators available to choose from for flights from Ontario Airport to Florida Keys.
How old do you have to be to fly from Ontario Airport to Florida Keys?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The required travel and health documents for your Florida Keys trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Florida Keys. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Florida Keys?
Based on momondo bookings for flights between Ontario and Florida Keys, the leading plane model is Airbus A320neo, making up 16.37% of the total bookings. Other popular models include Airbus A321neo with 12.33%, Boeing 737-800 Passenger/BBJ2 (winglets) with 9.10%, and Boeing 737 MAX 8 with 8.77%.
Best airlines flying from Ontario to Florida Keys
Compare and see reviews for airlines that fly from Ontario to Florida Keys with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $308 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $378 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to Florida Keys?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Florida Keys. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Ontario to Florida Keys with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Florida Keys from Ontario with this policy.
How can momondo help me find flights from Ontario to Florida Keys?
momondo provides multiple filters to help you find the best flight to Florida Keys from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Ontario to Florida Keys right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Ontario to Florida Keys flights. All you need is a valid email address and we will do the rest; it is that quick and easy.