What are the cheapest airlines flying from San Antonio to Key West round-trip?

American Airlines, at $264, was found to be the cheapest airline from San Antonio to Key West.Alternate airlines to your destination round-trip include Delta and United Airlines. American Airlines is currently priced 37% below the average price you’ll pay for this route.

What is the cheapest day to fly from San Antonio to Key West?

Travelers seeking maximum savings on their San Antonio to Key West flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from San Antonio to Key West?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 31% on the overall cost on flights from San Antonio to Key West.

How far in advance should I book a flight from San Antonio to Key West?

Users have found that booking a flight from San Antonio to Key West at least 41 days early can save you up to 62% on average compared to booking a flight this week. If booking 41 days before your flight isn’t an option for you, users have found flights from San Antonio to Key West for as little as $328 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $388 for flights departing within the next 3 days.

What is the cheapest month to fly from San Antonio to Key West?

August is one of the best times of the year to fly to Key West from San Antonio. Prices for August average $420 per person but you can even find prices for as low as $208. The most expensive prices can be found in the month of March. Opting for a August flight can save you 46% on your journey compared to booking in March

What is the cheapest time of day to fly from SAT to EYW?

When flying from San Antonio to Key West, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on San Antonio-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Key West flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Antonio-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from San Antonio to Key West that include hotel bookings?

Yes. In addition to deals on San Antonio to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Antonio to Key West?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Key West.

Can I find deals for business class flights from San Antonio to Key West?

Yes. Cheapflights offers flight deals from San Antonio to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$179+ Flights from San Antonio to Key West

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from San Antonio to Key West are usually found in August or September, booked 76 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from San Antonio to Key West

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$264 (American Airlines)
One-way from	$195 (Mytrip)
Popular in	March
Cheapest in	August
Average price	$613

Provider with most accurate pricing for San Antonio-Key West flight deals.

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Provider most trusted by Cheapflights users for San Antonio-Key West flights.

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From San Antonio to Key West

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One-way flight from San Antonio to Key West

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($37 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Find flight deals from San Antonio to Key West

Cheapest flights from San Antonio to Key West
Explore the most affordable flight options available from San Antonio to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Sat 4/266:02 amSAT - EYW

2 stops10h 27mAmerican Airlines

Tue 4/293:06 pmEYW - SAT

1 stop8h 17mAmerican Airlines

Deal found 3/25

$264

Sat 4/2612:13 pmSAT - EYW

1 stop7h 17mDelta

Tue 4/296:13 pmEYW - SAT

1 stop7h 17mDelta

Deal found 3/24

$374

Sat 5/2412:30 pmSAT - EYW

2 stops27h 15mMultiple Airlines

Sat 5/313:52 pmEYW - SAT

2 stops26h 16mMultiple Airlines

Deal found 3/25

$437

Mon 4/217:00 amSAT - EYW

1 stop7h 04mUnited Airlines

Mon 4/288:45 amEYW - SAT

2 stops32h 01mUnited Airlines

Deal found 3/24

$471

Best flights from San Antonio to Key West
Discover carefully curated flight deals from San Antonio to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 26, 2025.

Sat 4/266:02 amSAT - EYW

2 stops10h 27mAmerican Airlines

Tue 4/293:06 pmEYW - SAT

1 stop8h 17mAmerican Airlines

Deal found 3/25

$264

Sat 4/2612:13 pmSAT - EYW

1 stop7h 17mDelta

Tue 4/296:13 pmEYW - SAT

1 stop7h 17mDelta

Deal found 3/25

$374

Sat 5/2412:30 pmSAT - EYW

2 stops27h 15mMultiple Airlines

Sat 5/313:52 pmEYW - SAT

2 stops26h 16mMultiple Airlines

Deal found 3/25

$437

Thu 5/225:30 amSAT - EYW

2 stops11h 35mUnited Airlines

Sun 5/258:45 amEYW - SAT

2 stops26h 59mUnited Airlines

Deal found 3/25

$535

Last-minute flights from San Antonio to Key West
Discover last-minute flight deals from San Antonio to Key West. Data last updated March 26, 2025 and is based on user searches.

Thu 4/242:10 pmSAT - EYW

2 stops26h 55mUnited Airlines

Sun 4/276:45 pmEYW - SAT

2 stops17h 33mUnited Airlines

Deal found 3/25

$674

Sat 4/266:02 amSAT - EYW

2 stops10h 27mAmerican Airlines

Tue 4/293:06 pmEYW - SAT

1 stop8h 17mAmerican Airlines

Deal found 3/25

$264

Sat 4/2612:13 pmSAT - EYW

1 stop7h 17mDelta

Tue 4/296:13 pmEYW - SAT

1 stop7h 17mDelta

Deal found 3/25

$374

One-way flights from San Antonio to Key West
Search for one-way flight options from San Antonio to Key West. Find affordable one-way fares based on user searches. Data last updated March 26, 2025.

Sat 5/2412:30 pmSAT - EYW

2 stops27h 15mMultiple Airlines

Deal found 3/25

$195

Sat 4/55:24 amSAT - EYW

1 stop4h 29mAmerican Airlines

Deal found 3/25

$363

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Antonio to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 4/26

6:02 am-5:29 pm

2 stops10h 27m

Key West

Tue 4/29

3:06 pm-10:23 pm

1 stop8h 17m

$264

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 4/26

12:13 pm-8:30 pm

1 stop7h 17m

Key West

Tue 4/29

6:13 pm-12:30 am

1 stop7h 17m

$374

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 5/24

12:30 pm-4:45 pm

2 stops27h 15m

Key West

Sat 5/31

3:52 pm-5:08 pm

2 stops26h 16m

$437

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Mon 4/21

7:00 am-3:04 pm

1 stop7h 04m

Key West

Mon 4/28

8:45 am-3:46 pm

2 stops32h 01m

$471

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 4/26

12:13 pm-4:49 pm

2 stops27h 36m

$179

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Fri 4/25

11:46 am-6:55 pm

1 stop6h 09m

$210

San AntonioKey West

SAT - EYW

SATEYW

San Antonio

Sat 4/5

11:15 am-5:15 pm

1 stop5h 00m

$363

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from San Antonio to Key West

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Key West in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Antonio-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Key West flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Antonio-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Antonio to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from San Antonio with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Key West

How far ahead should I book a flight from San Antonio to Key West?

The best time to book flights from San Antonio to Key West is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Antonio to Key West?

Currently, August is the cheapest month in which you can book a flight from San Antonio to Key West (average of $328). Flying from San Antonio to Key West in March is currently the most expensive (average of $495). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Key West by month

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

Temperature in Key West by month

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Key West

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Delta

8.0

Very good

7,891 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

United Airlines

7.4

Good

8,608 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,891 reviews

Reviews

1 / 20

2.0

Mediocre

Joseph,Aug 2023

MSP - MCO

Related info for your journey

What are the cheapest airlines flying from San Antonio to Key West round-trip?
American Airlines, at $264, was found to be the cheapest airline from San Antonio to Key West.Alternate airlines to your destination round-trip include Delta and United Airlines. American Airlines is currently priced 37% below the average price you’ll pay for this route.
Can I find deals for flights from San Antonio to Key West that include hotel bookings?
Yes. In addition to deals on San Antonio to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to Key West?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Key West.
Can I find deals for business class flights from San Antonio to Key West?
Yes. Cheapflights offers flight deals from San Antonio to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Antonio to Key West?
Currently, August is the cheapest month in which you can book a flight from San Antonio to Key West (average of $328). Flying from San Antonio to Key West in March is currently the most expensive (average of $495). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Key West

Top 2 airlines flying from San Antonio to Key West

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$218	Average$408	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$225	Average$388	FlexibilityNo cancel fee	On-timeN/A

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$179+ Cheap flights from San Antonio to Key West (SAT - EYW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Key West with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Antonio to Key West are usually found in August or September, booked 76 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from San Antonio to Key West

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from San Antonio to Key West

Cheapest flights from San Antonio to Key WestExplore the most affordable flight options available from San Antonio to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Explore the most affordable flight options available from San Antonio to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Antonio to Key West that are best for you.

Compare providers for flights from San Antonio to Key West

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Key West in March.

Best time to book a flight from San Antonio to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from San Antonio with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Key West

How far ahead should I book a flight from San Antonio to Key West?

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to Key West. Price data was last updated on March 21, 2025.

What is the cheapest month to book a flight from San Antonio to Key West?

Rainfall in Key West by month

Plan your trip to Key West by taking into account the average rainfall totals by month.

Temperature in Key West by month

Plan your trip to Key West by taking into account the average temperature totals by month.

Reviews of airlines servicing Key West

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from San Antonio to Key West round-trip?

Can I find deals for flights from San Antonio to Key West that include hotel bookings?

How can I find direct flights from San Antonio to Key West?

Can I find deals for business class flights from San Antonio to Key West?

What is the cheapest month to book a flight from San Antonio to Key West?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Antonio to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from San Antonio to Key West

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Cheapest flights from San Antonio to Key West
Explore the most affordable flight options available from San Antonio to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.