Which airports can I use when flying from San Antonio to Islip?

Flights from San Antonio to Islip usually depart from San Antonio (SAT) and arrive at Islip Long Island (ISP).

What cabin classes can I book on flights from San Antonio to Islip?

Only Economy Class is available on flights from San Antonio to Islip.

Which airports do connecting flights from San Antonio to Islip pass through?

Most connecting flights from San Antonio to Islip pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Can I save money by using flexible dates for flights from San Antonio to Islip?

Yes. Being flexible with your travel dates can save you up to 74% on the San Antonio to Islip route. Thursday is the cheapest departure day at $324 round-trip on average, while Wednesday is the most expensive at $1,246, a difference of $922. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from San Antonio to Islip?

A nonstop flight from San Antonio to Islip takes 0h 00m, covering 1,621 miles.

Do I need a passport to fly from San Antonio to Islip?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from San Antonio to Islip changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $355 to $1,738. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from San Antonio to Islip looking right now?

One-way fares from San Antonio to Islip are currently higher than usual. Average one-way flight prices are about $210, which is 5% above the typical average for this route.

What is the time difference between San Antonio and Islip?

Islip is 1 hour ahead of San Antonio (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Islip Long Island Airport (ISP)?

Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include: • Budget • Enterprise Rent-A-Car • Avis • National • Empire Rent A Car

How much should I expect to pay for a San Antonio to Islip flight?

Round-trip flights from San Antonio to Islip range from $422 to $574, with an average of $456 over the past 12 months. Anything below $422 counts as a good deal.

What is the cheapest airline to fly from San Antonio to Islip?

Breeze Airways ($355) and Frontier ($379) are the cheapest airlines to fly round-trip from San Antonio to Islip according to KAYAK data over the last 5 days.

What is the cheapest layover airport when flying from San Antonio to Islip?

Flights via Baltimore/Washington (BWI) offer the most affordable fares, with an average round-trip price of $538. Based on KAYAK data over the past 3 months.

When flying from San Antonio to Islip which airport offers the shortest layover?

Baltimore/Washington (BWI) had the shortest average connection time for San Antonio to Islip layovers at 246 minutes over the past 3 months.

$159 CHEAP FLIGHTS from San Antonio to Islip (SAT - ISP)

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Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$355

Typical prices: $422-$574

Breeze Airways

Mon 10/29Thu 11/1

SAT - ISP • 1 stop

Cheapest one-way

$159

Typical prices: $198-$233

Southwest

Wed 10/24

SAT - ISP • 1 stop

Nonstop flights

Not available

There are currently no direct flights between San Antonio and Islip. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

September

Cheapest • 19% price drop

November

Most popular

Good to know

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We hope you love your trip to Islip!

Flight Deals

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

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from San Antonio to Islip

Thu, Oct 29 - Sun, Nov 1

9:25 am - 2:22 pmSAT San Antonio-ISP Islip Long Island

27h 57m1 stop Raleigh-Durham

10:57 am - 11:58 amISP Islip Long Island-SAT San Antonio

26h 01m2 stops Raleigh-Durham Memphis

$355Breeze Airways

Fri, Oct 16 - Sun, Oct 18

10:03 am - 6:00 pmSAT San Antonio-ISP Islip Long Island

6h 57m1 stop Orlando

6:25 pm - 9:08 amISP Islip Long Island-SAT San Antonio

15h 43m1 stop Orlando

$379Frontier

Fri, Oct 16 - Sun, Oct 18

1:10 pm - 5:30 pmSAT San Antonio-ISP Islip Long Island

27h 20m2 stops Las Vegas Harry Reid Intl Orlando

6:25 pm - 9:08 amISP Islip Long Island-SAT San Antonio

15h 43m1 stop Orlando

$404Frontier

Tue, Oct 27 - Tue, Nov 10

5:15 am - 12:10 pmSAT San Antonio-ISP Islip Long Island

5h 55m1 stop Baltimore/Washington

6:05 am - 11:15 amISP Islip Long Island-SAT San Antonio

6h 10m1 stop Baltimore/Washington

$437Southwest

Tue, Oct 27 - Tue, Nov 10

5:50 am - 3:45 pmSAT San Antonio-ISP Islip Long Island

8h 55m2 stops Dallas Love Field Baltimore/Washington

6:05 am - 11:15 amISP Islip Long Island-SAT San Antonio

6h 10m1 stop Baltimore/Washington

$442Southwest

Thu, Oct 29 - Sun, Nov 1

9:25 am - 2:22 pmSAT San Antonio-ISP Islip Long Island

27h 57m1 stop Raleigh-Durham

6:33 pm - 9:18 amISP Islip Long Island-SAT San Antonio

15h 45m1 stop Orlando

$448Multiple Airlines

Tue, Oct 27 - Tue, Nov 10

1:35 pm - 10:40 pmSAT San Antonio-ISP Islip Long Island

8h 05m2 stops Tampa Baltimore/Washington

4:05 pm - 11:10 pmISP Islip Long Island-SAT San Antonio

8h 05m2 stops Baltimore/Washington Nashville Intl

$457Southwest

Tue, Sep 29 - Sat, Oct 3

8:20 pm - 4:58 pmSAT San Antonio-ISP Islip Long Island

19h 38m2 stops Denver Intl Orlando

12:00 pm - 8:45 amISP Islip Long Island-SAT San Antonio

21h 45m1 stop Raleigh-Durham

$468Multiple Airlines

Thu, Oct 1 - Mon, Oct 5

9:25 am - 2:22 pmSAT San Antonio-ISP Islip Long Island

27h 57m1 stop Raleigh-Durham

5:43 pm - 2:20 pmISP Islip Long Island-SAT San Antonio

21h 37m2 stops Orlando Las Vegas Harry Reid Intl

$483Multiple Airlines

Thu, Oct 8 - Mon, Oct 12

9:25 am - 2:22 pmSAT San Antonio-ISP Islip Long Island

27h 57m1 stop Raleigh-Durham

6:55 pm - 7:26 pmISP Islip Long Island-SAT San Antonio

49h 31m2 stops Orlando Denver Intl

$575Multiple Airlines

Booking Insights

Price, demand and travel trends for San Antonio to Islip flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from San Antonio to Islip with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from San Antonio to Islip?

Round-trip flights from San Antonio to Islip start at $355. Prices are below average for this route right now, with typical round-trip fares ranging from $422 to $574. The lowest price found in the past 5 days was $355 on Breeze Airways.

Find deals

Low season	February
High season	November
Cheapest flight	$159

Flight from San Antonio to Islip

When to book flights from San Antonio to Islip

Are your dates flexible? Find out the best times to travel from San Antonio to Islip 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.

Which airports can I use when flying from San Antonio to Islip?
Flights from San Antonio to Islip usually depart from San Antonio (SAT) and arrive at Islip Long Island (ISP).
What cabin classes can I book on flights from San Antonio to Islip?
Only Economy Class is available on flights from San Antonio to Islip.
Which airports do connecting flights from San Antonio to Islip pass through?
Most connecting flights from San Antonio to Islip pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from San Antonio to Islip?
Yes. Being flexible with your travel dates can save you up to 74% on the San Antonio to Islip route. Thursday is the cheapest departure day at $324 round-trip on average, while Wednesday is the most expensive at $1,246, a difference of $922. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How long is a flight from San Antonio to Islip?
A nonstop flight from San Antonio to Islip takes 0h 00m, covering 1,621 miles.
Do I need a passport to fly from San Antonio to Islip?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from San Antonio to Islip changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $355 to $1,738. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from San Antonio to Islip looking right now?
One-way fares from San Antonio to Islip are currently higher than usual. Average one-way flight prices are about $210, which is 5% above the typical average for this route.
What is the time difference between San Antonio and Islip?
Islip is 1 hour ahead of San Antonio (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Islip Long Island Airport (ISP)?
Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include:
• Budget
• Enterprise Rent-A-Car
• Avis
• National
• Empire Rent A Car
How much should I expect to pay for a San Antonio to Islip flight?
Round-trip flights from San Antonio to Islip range from $422 to $574, with an average of $456 over the past 12 months. Anything below $422 counts as a good deal.

If your dates can be flexible, aim for a Thursday departure instead of Wednesday. On this route, Thursday flights average $324 - about $922 less than Wednesday (74% savings) based on the last 12 months.
If you can choose when to travel, plan your San Antonio to Islip trip for September. Fares historically average $368 round-trip in that month - typically $878 less than the most expensive month, which is May (based on the last 12 months).

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SAT - ISP

$159 Find Cheap Flights from San Antonio to Islip - Compare and Save

Everything you should know

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

Recent round-trip flight deals from San Antonio to Islip

Recent one-way flight deals from San Antonio to Islip

Price, demand and travel trends for San Antonio to Islip flights

How much is a round-trip flight from San Antonio to Islip?

What is the cheapest airline to fly from San Antonio to Islip?

What is the cheapest layover airport when flying from San Antonio to Islip?

When flying from San Antonio to Islip which airport offers the shortest layover?

Key details for San Antonio to Islip flights

Low season

High season

Cheapest flight

When to book flights from San Antonio to Islip

Your San Antonio to Islip flight questions, answered

Your guide to booking San Antonio to Islip flights

More options for your flight from San Antonio to Islip

Complete your trip to Islip with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from San Antonio to Islip

Find direct flights to and from San Antonio and Islip

Flights from domestic origins to Islip

Flights to other popular destinations

Find deals for your return flight