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Cheap flights from San Antonio to New York from $152

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 9/19. 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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Find the cheapest flights from San Antonio to New York (SAT-ISP)

Cheap round-trip flights

Logo
12:45 pm - 10:55 amSAT-ISP
21h 10m1 stop
Logo
9:49 am - 4:47 pmISP-SAT
31h 58m2 stops
$313
Find Deal
Fri, Sep 19 - Sun, Sep 21
Logo
12:45 pm - 10:55 amSAT-ISP
21h 10m1 stop
Logo
11:25 am - 11:40 amISP-SAT
25h 15m1 stop
$349
Find Deal
Fri, Sep 19 - Sun, Sep 21
Frontier Logo
5:40 pm - 9:04 amSAT-ISP
38h 24m2 stops
Frontier Logo
5:12 pm - 4:30 pmISP-SAT
24h 18m2 stops
$418Frontier
Find Deal
Fri, Sep 19 - Sun, Sep 21
Frontier Logo
8:43 pm - 9:09 amSAT-ISP
11h 26m2 stops
Frontier Logo
8:49 am - 7:30 pmISP-SAT
11h 41m2 stops
$702Frontier
Find Deal
Thu, Oct 30 - Sun, Nov 2

Frontier flights from San Antonio to Islip

Our best Frontier deals on San Antonio to Islip flight tickets
Frontier
Sep 19
SAT5:40 pmSan Antonio
38h 24m
2 stops
ISP9:04 amIslip Long Island
Sep 21
ISP5:12 pmIslip Long Island
24h 18m
2 stops
SAT4:30 pmSan Antonio
$418
Find similar
Frontier
Oct 30
SAT8:43 pmSan Antonio
11h 26m
2 stops
ISP9:09 amIslip Long Island
Nov 2
ISP8:49 amIslip Long Island
11h 41m
2 stops
SAT7:30 pmSan Antonio
$702
Find similar

Southwest flights from San Antonio to Islip

Our best Southwest deals on San Antonio to Islip flight tickets
Southwest
Sep 6
SAT5:05 amSan Antonio
6h 00m
1 stop
ISP12:05 pmIslip Long Island
Sep 8
ISP3:05 pmIslip Long Island
8h 00m
1 stop
SAT10:05 pmSan Antonio
$847
Find similar
Southwest
Sep 6
SAT10:30 amSan Antonio
10h 10m
2 stops
ISP9:40 pmIslip Long Island
Sep 8
ISP3:05 pmIslip Long Island
8h 00m
1 stop
SAT10:05 pmSan Antonio
$852
Find similar
Southwest
Sep 6
SAT10:30 amSan Antonio
8h 50m
2 stops
ISP8:20 pmIslip Long Island
Sep 8
ISP6:00 amIslip Long Island
8h 35m
2 stops
SAT1:35 pmSan Antonio
$857
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Islip 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 August 28, 2025.
Use the filters below to find and compare flights from San Antonio to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 9/19

12:45 pm-10:55 am

1 stop21h 10m

Islip Long Island

Sun 9/21

9:49 am-4:47 pm

2 stops31h 58m

$313

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 9/19

12:45 pm-10:55 am

1 stop21h 10m

Islip Long Island

Sun 9/21

11:25 am-11:40 am

1 stop25h 15m

$349

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 9/19

5:40 pm-9:04 am

2 stops38h 24m

Islip Long Island

Sun 9/21

5:12 pm-4:30 pm

2 stops24h 18m

$418

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 10/30

8:43 pm-9:09 am

2 stops11h 26m

Islip Long Island

Sun 11/2

8:49 am-7:30 pm

2 stops11h 41m

$702

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 9/19

12:45 pm-10:55 am

1 stop21h 10m

$152

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 9/19

5:40 pm-10:40 am

2 stops40h 00m

$176

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 9/18

7:17 pm-10:55 am

2 stops38h 38m

$190

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 9/19

9:47 pm-10:40 am

3 stops35h 53m

$208

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 9/18

9:47 pm-10:40 am

3 stops59h 53m

$222

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 9/18

2:54 pm-10:40 am

1 stop18h 46m

$245

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to New York from

How to get the cheapest flight ticket from San Antonio to Islip

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?

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

What airlines fly to Islip?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Islip 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. Keep in mind that there are 7 different airlines that fly to Islip on a routine basis, so you have a few additional options to choose from.

When to book flights from San Antonio to Islip

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

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

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

Direct flights

None
There are no direct flights from San Antonio to Islip. There are no popular flight routes from San Antonio to Islip.
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  • 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 11h 26m.

  • 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?

Best airlines flying from San Antonio to Islip

Compare and see reviews for airlines that fly from San Antonio to Islip with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $309Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

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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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