ISP - SAT

$191 Find Cheap Flights from Islip to San Antonio - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to San Antonio departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Antonio, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Antonio, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$335
Breeze Airways
Sat 9/12Fri 9/18
ISP - SAT • 1 stop
Cheapest one-way
$191
Southwest
Thu 9/10
ISP - SAT • 1 stop
Top airlines
Breeze Airways
Cheapest • from $335 (round-trip)
Southwest
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Islip and San Antonio. You'll need at least 1 connection.
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to San Antonio (ISP-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to San Antonio

Sat, Sep 12 - Fri, Sep 18
Breeze Airways Logo
12:00 pm - 8:45 am
ISP
-
SAT
21h 45m
1 stop
Breeze Airways Logo
12:38 pm - 11:20 am
SAT
-
ISP
21h 42m
2 stops
$335Breeze Airways
Sat, Sep 12 - Sun, Sep 20
Breeze Airways Logo
12:00 pm - 8:45 am
ISP
-
SAT
21h 45m
1 stop
Breeze Airways Logo
9:25 am - 11:12 am
SAT
-
ISP
24h 47m
1 stop
$336Breeze Airways
Sat, Sep 12 - Sat, Sep 19
Southwest Logo
11:55 am - 4:45 pm
ISP
-
SAT
5h 50m
1 stop
Southwest Logo
6:00 am - 2:30 pm
SAT
-
ISP
7h 30m
1 stop
$381Southwest
Sat, Sep 12 - Sat, Sep 19
Southwest Logo
11:55 am - 8:50 pm
ISP
-
SAT
9h 55m
2 stops
Southwest Logo
6:00 am - 2:30 pm
SAT
-
ISP
7h 30m
1 stop
$386Southwest
Sat, Sep 12 - Sat, Sep 19
Southwest Logo
11:55 am - 8:50 pm
ISP
-
SAT
9h 55m
2 stops
Southwest Logo
6:10 am - 2:30 pm
SAT
-
ISP
7h 20m
2 stops
$391Southwest
Sat, Sep 12 - Mon, Sep 21
Breeze Airways Logo
12:00 pm - 8:45 am
ISP
-
SAT
21h 45m
1 stop
Breeze Airways Logo
12:38 pm - 11:20 am
SAT
-
ISP
21h 42m
2 stops
$393Breeze Airways
Sat, Sep 12 - Thu, Sep 17
Multiple Airlines Logo
12:00 pm - 8:45 am
ISP
-
SAT
21h 45m
1 stop
Multiple Airlines Logo
9:25 am - 9:33 am
SAT
-
ISP
23h 08m
2 stops
$401Multiple Airlines
Sat, Sep 12 - Mon, Sep 21
Multiple Airlines Logo
12:00 pm - 8:45 am
ISP
-
SAT
21h 45m
1 stop
Multiple Airlines Logo
9:57 am - 12:58 pm
SAT
-
ISP
26h 01m
2 stops
$403Multiple Airlines
Sat, Sep 12 - Thu, Sep 17
Multiple Airlines Logo
12:00 pm - 8:45 am
ISP
-
SAT
21h 45m
1 stop
Multiple Airlines Logo
9:25 am - 9:33 am
SAT
-
ISP
23h 08m
2 stops
$412Multiple Airlines
Sat, Aug 1 - Thu, Aug 6
Breeze Airways Logo
11:57 am - 9:15 am
ISP
-
SAT
22h 18m
1 stop
Breeze Airways Logo
9:55 am - 1:28 pm
SAT
-
ISP
26h 33m
1 stop
$413Breeze Airways
Booking Insights

KAYAK's insights & trends for Islip to San Antonio flights

Get data-powered insights and trends into flights from Islip to San Antonio to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Islip to San Antonio?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Islip to San Antonio were found on Breeze Airways ($335) and Southwest ($381).

Find deals

Good to know

Cheapest flight$191
Flight from Islip to San Antonio

When to book flights from Islip to San Antonio

Are your dates flexible? Find out the best times to travel from Islip to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to San Antonio

  • What is the cheapest flight from Islip to San Antonio?

    In the last 5 days, the lowest price for a flight from Islip to San Antonio was $191 for a one-way ticket and $335 for a round-trip.

  • Do I need a passport to fly between Islip and San Antonio?

    A passport is not required to fly from Islip to San Antonio.

  • Which airports will I be using when flying from Islip to San Antonio?

    Islip airport is called Islip Long Island and the only airport in San Antonio is San Antonio.

  • Which aircraft models fly most regularly from Islip to San Antonio?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Islip with another airline. Booking your flights between Islip and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Islip to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Islip to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4235 reviews
7.5Entertainment
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
Airline reviews

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

2.0 MediocreDawn, Jun 2026
BUF - BWI
Read more Southwest reviews

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Everything you need to know for your flight from Islip to San Antonio

Information on your arrival and departure airports

Islip (ISP)
San Antonio (SAT)