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281 € Cheap Flights from San Antonio International to Key West International

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      Travellers and cabin class, 1 Adult, Economy

      Compare San Antonio International to Key West International flight deals

      Find the cheapest month or even day of the year to fly to Key West International

      Book the best Key West International fare with no extra fees

      Flight deals from San Antonio International to Key West International

      Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to Key West International Airport? If you want to travel next month, return fares start from 283 €. Find the lowest prices on one-way and return tickets right here.
      Key West.281 € per passenger.Departing Tue, 5 Jan, returning Tue, 12 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Tue, 5 Jan, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Tue, 12 Jan, arriving in San Antonio International.Price includes taxes and charges.From 281 €, select.
      Key West.283 € per passenger.Departing Tue, 29 Sep, returning Tue, 6 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Tue, 29 Sep, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Tue, 6 Oct, arriving in San Antonio International.Price includes taxes and charges.From 283 €, select.
      Key West.283 € per passenger.Departing Tue, 20 Oct, returning Tue, 27 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Tue, 20 Oct, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Tue, 27 Oct, arriving in San Antonio International.Price includes taxes and charges.From 283 €, select.
      Key West.287 € per passenger.Departing Sun, 20 Sep, returning Fri, 25 Sep.Return flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from San Antonio International on Sun, 20 Sep, arriving in Key West International.Inbound indirect flight with Breeze Airways, departs from Key West International on Fri, 25 Sep, arriving in San Antonio International.Price includes taxes and charges.From 287 €, select.
      Key West.321 € per passenger.Departing Tue, 27 Oct, returning Tue, 3 Nov.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Tue, 27 Oct, arriving in Key West International.Inbound indirect flight with Breeze Airways, departs from Key West International on Tue, 3 Nov, arriving in San Antonio International.Price includes taxes and charges.From 321 €, select.
      Key West.482 € per passenger.Departing Thu, 4 Feb, returning Sun, 7 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from San Antonio International on Thu, 4 Feb, arriving in Key West International.Inbound indirect flight with Delta, departs from Key West International on Sun, 7 Feb, arriving in San Antonio International.Price includes taxes and charges.From 482 €, select.
      Key West.578 € per passenger.Departing Wed, 25 Nov, returning Sun, 29 Nov.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 25 Nov, arriving in Key West International.Inbound indirect flight with Allegiant Air, departs from Key West International on Sun, 29 Nov, arriving in San Antonio International.Price includes taxes and charges.From 578 €, select.

      Find the cheapest month to fly from San Antonio International to Key West International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to Key West International flights are currently cheapest in January.
      Sep
      from 287 €
      Oct
      from 283 €
      Nov
      from 578 €
      Dec
      Find prices
      Jan
      from 281 €
      Feb
      from 482 €
      Mar
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      Apr
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      May
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      Jun
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      Jul
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      Aug
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      San Antonio International to Key West International: Alternative routes

      Compare routes from San Antonio International to Key West below. You may find an airport to fly into that's cheaper, faster, or easier than Key West International.

      Key West International

      5km from central Key West
      ClosestCheapest
      from 281 €
      Search flights

      San Antonio to Key West: Flight information

      The things to know before you go.
      Cheapest flight found281 €
      Cheapest month to flyJanuary

      Finding cheap flights from San Antonio International to Key West International: Frequently asked questions

      The best price we found for a return flight from San Antonio International to Key West International is 281 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from San Antonio International to Key West International. But we found flights with one or more stops from 281 €.
      As of September 2026, there are no flights flying from San Antonio International to Key West International.
      The cheapest month to fly from San Antonio International to Key West International is usually January.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to Key West International Airport on Tuesday, 5 January 2027.
      No airlines currently offer direct flights between San Antonio International Airport and Key West International Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Key West International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Key West is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Delta offers the cheapest flight tickets to Key West International.

      Flying from San Antonio International Airport (SAT) to Key West International Airport (EYW): what you need to know

      • Leave enough time to make your SAT to EYW flight. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.

      • You'll likely experience longer lines in popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you ample time for security and boarding.

      • If you want to break up your flight, simply uncheck 'Direct flights only' when searching for your ticket from San Antonio International Airport to Key West International Airport. These are the most popular stopovers between SAT and EYW:

        • Atlanta Hartsfield-Jackson Airport

        • Dallas Fort Worth International Airport

        • Tampa International Airport

      Handy information about San Antonio International Airport (SAT)

      • You'll find SAT at 9800 Airport Boulevard.

      • San Antonio International Airport maintains a solid on-time performance, so you're unlikely to face delays. Departures from SAT arrive on schedule 82% of the time.

      • San Antonio International Airport is about 14 kilometres from central San Antonio. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.

      • Expect a journey time of roughly 50 minutes on public transport.

      • Booked an early flight from San Antonio International Airport to Key West International Airport? Avoid rushing to the airport (and catch some extra z's) by choosing one of these stays near SAT:

      Arriving at Key West International Airport (EYW)

      • If you're arriving on a late San Antonio International Airport to Key West International Airport flight, few things top the convenience of being near the terminal. Grab your bags from the carousel and then be showered and resting not long after at one of these accommodation options near EYW:

      • Grab a Key West International Airport rental car and discover Key West and beyond with your own wheels. Dollar, Alamo and Budget are leading providers to choose from here.

      • Reserving your vehicle from Key West International Airport about two weeks in advance gives you the best chance of locking in a great deal.

      When to fly to Key West International Airport (EYW)

      • It's time to work out your dates for your flight from San Antonio International Airport to Key West International Airport. April is the most popular month to visit Key West. If you want a more low-key vibe, go in September.

      • Before locking in your flight from San Antonio International Airport to Key West International Airport, think about the kind of weather you enjoy. August is the warmest month in Key West, with the temperature ranging from 26ºC (79ºF) to 30ºC (86ºF).

      • Search for cheap tickets from SAT to EYW in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 18ºC (64ºF) and 23ºC (73ºF) on average.

      Explore more of the United States

      • Key West has plenty going for it, but there are so many other parts of the United States you'll want to see. Around 209 kilometres north-east of Key West, a visit to Miami will keep your itinerary busy. Start with leading sights like Beach, Ocean Drive and Port of Miami.

      • Around 386 kilometres north of Key West, Tampa is another essential stop in the United States. Get a taste of what this destination has to offer at Busch Gardens Tampa, The Florida Aquarium and ZooTampa at Lowry Park.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.