Cheap flights from Key West to the United States from $101

In general, November is the cheapest month to fly from Key West to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $259. If you aren’t able to travel during the month of November, then book flights to United States from Key West during December instead. Flights to United States in December, while not as cheap as those in November, still average around $289.

According to our data, Thursday is the cheapest day to fly to United States from Key West. The lowest ticket price found for a Thursday departure recently was $289. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $649. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $357. Try not to purchase tickets at noon because they tend to be around $389. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Key West to Orlando for the best Key West - United States flight prices

There are 4 cabin classes available to choose from on Key West to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Key West to United States.

Spirit Airlines, Allegiant Air, and Delta are the most popular carriers operating from Key West to United States

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to United States from Key West according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 5 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Key West and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 96 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

As of March 2026, there are 20 flights per day flying from Key West to United States. The most common time of day flights depart is 2:00PM, with 49% of flights taking off in the afternoon.

The number of flights available between Key West and United States is 140 per week as of March 2026. The most frequent departure day is Thu, with 16% of weekly flights leaving on this day.