$618+ Cheap flights from Islip, NY to Oklahoma City (ISP - OKC)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — OKC
Nov 20 — Nov 271
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Oklahoma City with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to Oklahoma City
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Best
Last-minute
Cheapest flights from Islip to Oklahoma CityExplore the most affordable flight options available from Islip to Oklahoma City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2026.
Explore the most affordable flight options available from Islip to Oklahoma City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2026.
This Southwest deal was found by Cheapflights users on 10/18. 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 11/204:45 pm -
1 stop6h 45m
Fri 11/276:05 am -
2 stops8h 30m
Deal found 10/18![Southwest logo]()
$618
This Southwest deal was found by Cheapflights users on 10/17. 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 10/286:05 am -
2 stops9h 20m
Sat 10/317:45 am -
2 stops8h 35m
Deal found 10/17![Southwest logo]()
$847
This United deal was found by Cheapflights users on 10/17. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:30 pm -
2 stops12h 24m
Sat 10/311:38 pm -
3 stops21h 31m
Deal found 10/17![Multiple Airlines logo]()
$1,295
Best flights from Islip to Oklahoma CityDiscover carefully curated flight deals from Islip to Oklahoma City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 21, 2026.
Discover carefully curated flight deals from Islip to Oklahoma City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 21, 2026.
This Southwest deal was found by Cheapflights users on 10/18. 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 11/204:45 pm -
1 stop6h 45m
Fri 11/276:05 am -
2 stops8h 30m
Deal found 10/18![Southwest logo]()
$618
This Frontier deal was found by Cheapflights users on 10/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/79:18 pm -
2 stops23h 16m
Thu 1/148:29 pm -
2 stops13h 35m
Deal found 10/20![Frontier logo]()
$765
Last-minute flights from Islip to Oklahoma CityDiscover last-minute flight deals from Islip to Oklahoma City. Data last updated October 21, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Oklahoma City. Data last updated October 21, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/17. 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 10/286:05 am -
2 stops9h 20m
Sat 10/317:45 am -
2 stops8h 35m
Deal found 10/17![Southwest logo]()
$847
This United deal was found by Cheapflights users on 10/17. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:30 pm -
2 stops12h 24m
Sat 10/311:38 pm -
3 stops21h 31m
Deal found 10/17![Multiple Airlines logo]()
$1,295
This Southwest deal was found by Cheapflights users on 10/18. 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 11/204:45 pm -
1 stop6h 45m
Fri 11/276:05 am -
2 stops8h 30m
Deal found 10/18![Southwest logo]()
$618
Find flight deals from Islip to Oklahoma City
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Oklahoma City (OKC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $618 (Southwest) |
Popular in | June |
Cheapest in | April |
Average price | $493 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Oklahoma City 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, Cheapflights users made 7,457,451 searches. Data last updated October 21, 2026.
Use the filters below to find and compare flights from Islip to Oklahoma City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
IslipOklahoma City
ISP Islip Long Island - OKC Oklahoma City Will Rogers World
ISPOKC
Islip Long Island
Fri 11/20
4:45 pm-10:30 pm
1 stop6h 45m
Oklahoma City Will Rogers World
Fri 11/27
6:05 am-3:35 pm
2 stops8h 30m
$618
IslipOklahoma City
ISP Islip Long Island - OKC Oklahoma City Will Rogers World
ISPOKC
Islip Long Island
Thu 1/7
9:18 pm-7:34 pm
2 stops23h 16m
Oklahoma City Will Rogers World
Thu 1/14
8:29 pm-11:04 am
2 stops13h 35m
$765
Sorted by cheapest first
Compare providers for flights from Islip to Oklahoma City
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Oklahoma City in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Islip, New York-Oklahoma City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Oklahoma City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Oklahoma City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-Oklahoma City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Oklahoma City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Islip to Oklahoma City
Have a flexible travel schedule? Discover the best time to fly to Oklahoma City from Islip with our price prediction graph.
ISP-OKC
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Islip to Oklahoma City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Oklahoma City?
Book flights to Oklahoma City if you plan to visit one of these locationsMoore
Norman
Edmond
Midwest City
Shawnee
Ada
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