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Cheap flights from San Antonio to New York from $383

This is the cheapest round-trip 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 12/25. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:30 am - 11:31 pmSAT-ISP
11h 01m2 stops
Multiple Airlines Logo
6:40 pm - 11:50 amISP-SAT
18h 10m1 stop
$383Multiple Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
Multiple Airlines Logo
11:30 am - 11:31 pmSAT-ISP
11h 01m2 stops
Multiple Airlines Logo
6:40 pm - 11:50 amISP-SAT
18h 10m1 stop
$390Multiple Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
Southwest Logo
5:05 pm - 11:30 pmSAT-ISP
5h 25m1 stop
Southwest Logo
3:45 pm - 9:10 pmISP-SAT
6h 25m1 stop
$407Southwest
Find Deal
Fri, Feb 27 - Tue, Mar 3
Southwest Logo
5:20 am - 12:15 pmSAT-ISP
5h 55m1 stop
Southwest Logo
6:00 am - 2:30 pmISP-SAT
9h 30m2 stops
$412Southwest
Find Deal
Fri, Feb 27 - Tue, Mar 3
Southwest Logo
5:50 am - 5:00 pmSAT-ISP
10h 10m2 stops
Southwest Logo
3:45 pm - 11:05 pmISP-SAT
8h 20m2 stops
$417Southwest
Find Deal
Fri, Feb 27 - Tue, Mar 3
Multiple Airlines Logo
12:45 pm - 1:09 pmSAT-ISP
23h 24m1 stop
Multiple Airlines Logo
6:40 pm - 11:50 amISP-SAT
18h 10m1 stop
$432Multiple Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
Southwest Logo
5:45 am - 12:15 pmSAT-ISP
5h 30m1 stop
Southwest Logo
5:55 pm - 12:05 amISP-SAT
7h 10m1 stop
$440Southwest
Find Deal
Thu, Dec 25 - Sat, Jan 3
Southwest Logo
5:45 am - 12:15 pmSAT-ISP
5h 30m1 stop
Southwest Logo
5:30 am - 3:00 pmISP-SAT
10h 30m2 stops
$445Southwest
Find Deal
Thu, Dec 25 - Sat, Jan 3
Southwest Logo
12:05 pm - 10:05 pmSAT-ISP
9h 00m2 stops
Southwest Logo
5:30 am - 3:00 pmISP-SAT
10h 30m2 stops
$450Southwest
Find Deal
Thu, Dec 25 - Sat, Jan 3

Southwest flights from San Antonio to Islip, New York

Our best Southwest deals on San Antonio to Islip, New York flight tickets
Southwest
Feb 27
SAT5:05 pmSan Antonio
5h 25m
1 stop
ISP11:30 pmIslip Long Island
Mar 3
ISP3:45 pmIslip Long Island
6h 25m
1 stop
SAT9:10 pmSan Antonio
$407
Find similar
Southwest
Feb 27
SAT5:20 amSan Antonio
5h 55m
1 stop
ISP12:15 pmIslip Long Island
Mar 3
ISP6:00 amIslip Long Island
9h 30m
2 stops
SAT2:30 pmSan Antonio
$412
Find similar
Southwest
Feb 27
SAT5:50 amSan Antonio
10h 10m
2 stops
ISP5:00 pmIslip Long Island
Mar 3
ISP3:45 pmIslip Long Island
8h 20m
2 stops
SAT11:05 pmSan Antonio
$417
Find similar

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 November 23, 2025.
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 12/25

11:30 am-11:31 pm

2 stops11h 01m

Islip Long Island

Sat 1/3

6:40 pm-11:50 am

1 stop18h 10m

$383

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 12/25

11:30 am-11:31 pm

2 stops11h 01m

Islip Long Island

Sat 1/3

6:40 pm-11:50 am

1 stop18h 10m

$390

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 2/27

5:05 pm-11:30 pm

1 stop5h 25m

Islip Long Island

Tue 3/3

3:45 pm-9:10 pm

1 stop6h 25m

$407

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 2/27

5:20 am-12:15 pm

1 stop5h 55m

Islip Long Island

Tue 3/3

6:00 am-2:30 pm

2 stops9h 30m

$412

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Fri 2/27

5:50 am-5:00 pm

2 stops10h 10m

Islip Long Island

Tue 3/3

3:45 pm-11:05 pm

2 stops8h 20m

$417

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 12/25

12:45 pm-1:09 pm

1 stop23h 24m

Islip Long Island

Sat 1/3

6:40 pm-11:50 am

1 stop18h 10m

$432

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 12/25

5:45 am-12:15 pm

1 stop5h 30m

Islip Long Island

Sat 1/3

5:55 pm-12:05 am

1 stop7h 10m

$440

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 12/25

5:45 am-12:15 pm

1 stop5h 30m

Islip Long Island

Sat 1/3

5:30 am-3:00 pm

2 stops10h 30m

$445

San AntonioIslip

SAT - ISP

SATISP

San Antonio

Thu 12/25

12:05 pm-10:05 pm

2 stops9h 00m

Islip Long Island

Sat 1/3

5:30 am-3:00 pm

2 stops10h 30m

$450

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, 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 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 32% 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

Direct flights

None
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.
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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 5h 25m.

  • 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
4,252 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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