Find cheap Southwest flights to Islip
WAS — ISP
Nov 11 — Nov 181
Round-trip
1 adult, Economy
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Cheapest Southwest flights from USA to IslipExplore the most affordable Southwest flight options available from USA to Islip. Find the lowest fares with prices last updated on October 12, 2026.
Explore the most affordable Southwest flight options available from USA to Islip. Find the lowest fares with prices last updated on October 12, 2026.
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:55 pm -
Nonstop1h 10m
Sat 11/1412:45 pm -
Nonstop1h 20m
Deal found 10/10![Southwest logo]()
$163
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:55 pm -
2 stops7h 40m
Tue 11/1712:30 pm -
1 stop3h 10m
Deal found 10/10![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:10 am -
1 stop7h 05m
Tue 11/174:05 pm -
1 stop4h 45m
Deal found 10/7![Southwest logo]()
$234
Best Southwest flights from USA to IslipDiscover carefully curated Southwest flight deals from USA to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
Discover carefully curated Southwest flight deals from USA to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:55 pm -
Nonstop1h 10m
Sat 11/1412:45 pm -
Nonstop1h 20m
Deal found 10/10![Southwest logo]()
$163
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:45 pm -
2 stops9h 50m
Tue 11/1712:30 pm -
2 stops8h 35m
Deal found 10/10![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:25 pm -
1 stop6h 20m
Tue 12/812:30 pm -
1 stop5h 55m
Deal found 10/11![Southwest logo]()
$217
Direct Southwest flights from USA to IslipExplore non-stop Southwest flight options from USA to Islip based on user searches, and compare prices and availability for your desired travel dates. Data last updated October 12, 2026.
Explore non-stop Southwest flight options from USA to Islip based on user searches, and compare prices and availability for your desired travel dates. Data last updated October 12, 2026.
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:55 pm -
Nonstop1h 10m
Sat 11/1412:45 pm -
Nonstop1h 20m
Deal found 10/10![Southwest logo]()
$163
This Southwest deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:35 pm -
Nonstop2h 30m
Mon 12/75:05 pm -
Nonstop2h 55m
Deal found 10/8![Southwest logo]()
$245
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:20 pm -
Nonstop1h 15m
Mon 11/166:05 am -
Nonstop1h 15m
Deal found 10/10![Southwest logo]()
$246
Last-minute Southwest flights from USA to IslipDiscover last-minute Southwest flight deals from USA to Islip. Data last updated October 12, 2026 and is based on user searches.
Discover last-minute Southwest flight deals from USA to Islip. Data last updated October 12, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:55 pm -
Nonstop1h 10m
Sat 11/1412:45 pm -
Nonstop1h 20m
Deal found 10/10![Southwest logo]()
$163
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:55 pm -
2 stops7h 40m
Tue 11/1712:30 pm -
1 stop3h 10m
Deal found 10/10![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:10 am -
1 stop7h 05m
Tue 11/174:05 pm -
1 stop4h 45m
Deal found 10/7![Southwest logo]()
$234
One-way Southwest flights to IslipSearch for one-way Southwest flight options to Islip. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
Search for one-way Southwest flight options to Islip. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
This Southwest deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:55 pm -
Nonstop1h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Southwest logo]()
$82
This Southwest deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:15 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Southwest logo]()
$99
This Southwest deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/253:25 pm -
1 stop6h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Southwest logo]()
$109
Flights to Islip with Southwest at a glance
Find detailed information about Southwest flights from USA to Islip. Explore the options provided by Southwest to plan your journey from USA to Islip. Data last updated October 12, 2026.
Cheapflights Insights
Find cheap Southwest flights to Islip
US0-ISP
BWI-ISP
RDU-ISP
TPA-ISP
MYR-ISP
How long is the flight to Islip with Southwest?
On average, Southwest flights from the United States to Islip take 2 hours 39 minutes. Flights to Islip from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
Southwest weekly flight availability to Islip
The most flights to Islip operated by Southwest are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).
When is the cheapest time to fly to Islip with Southwest?
Users looking for the cheapest Southwest fares to Islip should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday evenings, when prices are usually at their highest.
FAQs about flights to Islip with Southwest
Reviews of Southwest
See what Cheapflights users have to say about their Southwest experience.
Overview
Reviews
Southwest
4,221 reviews
Overview
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Recent reviews
8.0
|Oct 2026I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
10.0
|Sep 2026Changed flight which was easy. Gate Agent booked me from extra leg room seat on original flight to row 15 on new flight that did not have extra leg room - even though it was an exit row. The row in front of me with extra leg room had an empty seat.
4.0
|Sep 2026It was a red eye overnight which I prefer. But this time the seat was SOOOO uncomfortable that sleeping was difficult and painful
10.0
|Sep 2026I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.
10.0
|Aug 2026great
1 out of 1407
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