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Cheap flights from San Antonio to New York from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to New York departing on 3/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from San Antonio to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:26 am - 4:12 pm
SAT
-
ISP
28h 46m
2 stops
Multiple Airlines Logo
3:34 pm - 11:59 pm
ISP
-
SAT
9h 25m
1 stop
$279Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
6:00 am - 7:38 am
SAT
-
ISP
24h 38m
1 stop
Multiple Airlines Logo
3:34 pm - 11:59 pm
ISP
-
SAT
9h 25m
1 stop
$339Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Southwest Logo
5:15 am - 11:45 am
SAT
-
ISP
5h 30m
1 stop
Southwest Logo
5:55 pm - 11:00 pm
ISP
-
SAT
6h 05m
1 stop
$534Southwest
Sun, Mar 8 - Thu, Mar 12
Southwest Logo
5:10 am - 11:50 am
SAT
-
ISP
5h 40m
1 stop
Southwest Logo
6:00 am - 10:45 am
ISP
-
SAT
5h 45m
1 stop
$538Southwest
Thu, Jul 16 - Sun, Jul 19
Southwest Logo
3:30 pm - 11:50 pm
SAT
-
ISP
7h 20m
2 stops
Southwest Logo
5:55 pm - 11:00 pm
ISP
-
SAT
6h 05m
1 stop
$539Southwest
Sun, Mar 8 - Thu, Mar 12
Southwest Logo
7:05 am - 5:15 pm
SAT
-
ISP
9h 10m
2 stops
Southwest Logo
5:20 pm - 12:35 am
ISP
-
SAT
8h 15m
1 stop
$543Southwest
Thu, Jul 16 - Sun, Jul 19
Southwest Logo
3:30 pm - 11:50 pm
SAT
-
ISP
7h 20m
2 stops
Southwest Logo
6:00 am - 2:45 pm
ISP
-
SAT
9h 45m
2 stops
$554Southwest
Sun, Mar 8 - Thu, Mar 12
Southwest Logo
5:50 am - 5:00 pm
SAT
-
ISP
10h 10m
2 stops
Southwest Logo
5:55 am - 3:35 pm
ISP
-
SAT
10h 40m
2 stops
$577Southwest
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
6:00 am - 5:46 pm
SAT
-
ISP
34h 46m
2 stops
Multiple Airlines Logo
5:08 pm - 12:27 pm
ISP
-
SAT
20h 19m
1 stop
$616Multiple Airlines
Sat, Mar 7 - Thu, Mar 12
Southwest Logo
7:05 am - 5:15 pm
SAT
-
ISP
9h 10m
2 stops
Southwest Logo
5:55 pm - 12:35 am
ISP
-
SAT
7h 40m
2 stops
$617Southwest
Thu, Jul 16 - Sun, Jul 19

Southwest flights from San Antonio to Islip, New York

Our best Southwest deals on San Antonio to Islip, New York flight tickets
Southwest
Mar 8
SAT5:15 amSan Antonio
5h 30m
1 stop
ISP11:45 amIslip Long Island
Mar 12
ISP5:55 pmIslip Long Island
6h 05m
1 stop
SAT11:00 pmSan Antonio
$534
Southwest
Jul 16
SAT5:10 amSan Antonio
5h 40m
1 stop
ISP11:50 amIslip Long Island
Jul 19
ISP6:00 amIslip Long Island
5h 45m
1 stop
SAT10:45 amSan Antonio
$538
Southwest
Mar 8
SAT3:30 pmSan Antonio
7h 20m
2 stops
ISP11:50 pmIslip Long Island
Mar 12
ISP5:55 pmIslip Long Island
6h 05m
1 stop
SAT11:00 pmSan Antonio
$539

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Islip, New York that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from San Antonio to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 2/26

10:26 am-4:12 pm

2 stops28h 46m

Islip Long Island

Mon 3/2

3:34 pm-11:59 pm

1 stop9h 25m

$279

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 2/26

6:00 am-7:38 am

1 stop24h 38m

Islip Long Island

Mon 3/2

3:34 pm-11:59 pm

1 stop9h 25m

$339

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Sun 3/8

5:15 am-11:45 am

1 stop5h 30m

Islip Long Island

Thu 3/12

5:55 pm-11:00 pm

1 stop6h 05m

$534

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 7/16

5:10 am-11:50 am

1 stop5h 40m

Islip Long Island

Sun 7/19

6:00 am-10:45 am

1 stop5h 45m

$538

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Sun 3/8

3:30 pm-11:50 pm

2 stops7h 20m

Islip Long Island

Thu 3/12

5:55 pm-11:00 pm

1 stop6h 05m

$539

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 7/16

7:05 am-5:15 pm

2 stops9h 10m

Islip Long Island

Sun 7/19

5:20 pm-12:35 am

1 stop8h 15m

$543

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Sun 3/8

3:30 pm-11:50 pm

2 stops7h 20m

Islip Long Island

Thu 3/12

6:00 am-2:45 pm

2 stops9h 45m

$554

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 2/26

5:50 am-5:00 pm

2 stops10h 10m

Islip Long Island

Mon 3/2

5:55 am-3:35 pm

2 stops10h 40m

$577

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Sat 3/7

6:00 am-5:46 pm

2 stops34h 46m

Islip Long Island

Thu 3/12

5:08 pm-12:27 pm

1 stop20h 19m

$616

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 7/16

7:05 am-5:15 pm

2 stops9h 10m

Islip Long Island

Sun 7/19

5:55 pm-12:35 am

2 stops7h 40m

$617

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from San Antonio to Islip, New York

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 airline that flies from San Antonio to Islip Long Island?

Southwest is the most popular carrier operating from San Antonio to Islip Long Island

What airlines fly to Islip, New York?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Islip, New York from San Antonio according to our data. United Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When to book flights from San Antonio to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Islip, New York (SAT to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Islip, New York

Fastest flight time

5h 30m

Direct flights

None
The fastest flight from San Antonio to Islip, New York takes 5h 30m
There are no direct flights from San Antonio to Islip, New York. There are no popular flight routes from San Antonio to Islip, New York.
Search flight deals

  • How far is San Antonio to Islip Long Island by plane?

    The distance between San Antonio and Islip Long Island is about 1619.5 mi. A reasonable flight in good conditions will take 5h 30m.

  • When did momondo last update prices for flights from San Antonio Airport to Islip Long Island Airport?

    Prices for flights from San Antonio Airport to Islip Long Island Airport refresh daily.

  • How many operators does momondo search for flights from San Antonio Airport to Islip Long Island Airport?

  • How old do you have to be to fly from San Antonio Airport to Islip Long Island 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 Islip Long Island Airport.

  • What documentation or ID do you need to fly to Islip Long Island Airport?

    The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Antonio to Islip, New York?

Best airlines flying from San Antonio to Islip, New York

Compare and see reviews for airlines that fly from San Antonio to Islip, New York with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $309Free CancellationRating
8.0
4,280 reviews
Search Southwest flights

Traveling to a place near New York?

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Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Islip?

It is quick and easy to find San Antonio to Islip flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Islip that suits you.

Can I find flights from San Antonio to Islip with flexible booking policies on momondo?

Yes. All flights to Islip from San Antonio on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Antonio to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from San Antonio.

I’m not ready to book a flight from San Antonio to Islip right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Antonio to Islip now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Islip and let you know when they change.

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