Cheap flights from San Antonio to Key West from $259
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Key West departing on 8/18. 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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How to get the cheapest flight ticket from San Antonio to Key West
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 Key West?
In general, August is the cheapest month to fly from San Antonio to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $303. If you are unable to visit Key West during the month of August, then departing from San Antonio during the month September is also very affordable. Most momondo users find prices during this month for around $318.
What is the cheapest day to depart on your flight to Key West?
On average, the least expensive day to fly to Key West from San Antonio is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $335. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Key West for around $438.
What is the cheapest time of day to depart on your flight to Key West?
According to our data, the cheapest time of day to fly to Key West is in the morning. momondo users have found flights departing from San Antonio to Key West in the morning for as low as $398. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the morning, with an average ticket price of $398. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Key West?
You are more likely to see cheaper flights to Key West from San Antonio when booking 23 weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $427 when searching 23 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from San Antonio for as low as $324 on momondo.
When to book flights from San Antonio to Key West
Cheap San Antonio to Key West (SAT to EYW) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Antonio to Key West
How far is San Antonio to Key West by plane?
There are 1079.4 mi between San Antonio and Key West. Typically, this will take 4h 52m by plane in normal conditions.
When did momondo last update prices for flights from San Antonio Airport to Key West Airport?
Prices for flights from San Antonio Airport to Key West Airport are updated daily.
How many operators does momondo search for flights from San Antonio Airport to Key West Airport?
As of April 2025, there are 2 operators available to choose from for flights from San Antonio Airport to Key West Airport.
How old do you have to be to fly from San Antonio Airport to Key West Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from San Antonio to Key West?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Antonio to Key West is American Airlines (86% of total bookings). The next most popular airline is Delta (14%).
Best airlines flying from San Antonio to Key West
Compare and see reviews for airlines that fly from San Antonio to Key West with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $218 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $225 | Free Cancellation | Rating 8.0 7,917 reviews |
Traveling to a place near Key West?
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Why should I use momondo to find a flight deal from San Antonio to Key West?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Antonio to Key West for you.
Can I find flights from San Antonio to Key West with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Key West from San Antonio with this policy.
How can momondo help me find flights from San Antonio to Key West?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to Key West.
I’m not ready to book a flight from San Antonio to Key West right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Antonio to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.