App
Customer Support
MYR
Find Bookings
Trip.com
>
Cheap Flights
>
United States
>
Missouri
>
St. Louis
>
Flights from Islip to St. Louis
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Islip to St. Louis Starting at MYR 254

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • ISP09:41
        15h 2m
        1 stop
        STL23:43
        Tue, Mar 4|Islip - St. Louis|Frontier Airlines
        MYR 254MYR 588
        56% OFF
        56% OFF
        MYR 588MYR 254

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Tue, Mar 4, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 254 including taxes and charges.

      • ISP21:04
        27h 39m
        1 stop
        STL23:43
        Mon, Mar 3|Islip - St. Louis|Frontier Airlines
        MYR 286MYR 588
        51% OFF
        51% OFF
        MYR 588MYR 286

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Mon, Mar 3, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 286 including taxes and charges.

      • ISP21:04
        27h 45m
        1 stop
        STL23:49
        Mon, Mar 10|Islip - St. Louis|Frontier Airlines
        MYR 292MYR 588
        50% OFF
        50% OFF
        MYR 588MYR 292

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Mon, Mar 10, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 292 including taxes and charges.

      • ISP09:41
        15h 2m
        1 stop
        STL23:43
        Wed, Mar 5|Islip - St. Louis|Frontier Airlines
        MYR 303
        MYR 303

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Wed, Mar 5, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 303 including taxes and charges.

      • ISP08:47
        15h 56m
        1 stop
        STL23:43
        Sat, Mar 1|Islip - St. Louis|Frontier Airlines
        MYR 331
        MYR 331

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Sat, Mar 1, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 331 including taxes and charges.

      • ISP19:54
        28h 49m
        1 stop
        STL23:43
        Sun, Mar 2|Islip - St. Louis|Frontier Airlines
        MYR 374
        MYR 374

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Sun, Mar 2, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 374 including taxes and charges.

      • ISP20:51
        13h 45m
        1 stop
        STL09:36
        Sun, Mar 9|Islip - St. Louis|Frontier Airlines
        MYR 380
        MYR 380

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Sun, Mar 9, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 380 including taxes and charges.

      • ISP09:07
        15h 42m
        1 stop
        STL23:49
        Sat, Mar 8|Islip - St. Louis|Frontier Airlines
        MYR 434
        MYR 434

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Sat, Mar 8, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 434 including taxes and charges.

      • ISP21:04
        13h 56m
        1 stop
        STL10:00
        Thu, Mar 6|Islip - St. Louis|Frontier Airlines
        MYR 445
        MYR 445

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Thu, Mar 6, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 445 including taxes and charges.

      • ISP21:04
        27h 45m
        1 stop
        STL23:49
        Fri, Mar 7|Islip - St. Louis|Frontier Airlines
        MYR 456
        MYR 456

        Choose Frontier Airlines flights from Islip to St. Louis. The one-way connecting flight with Frontier Airlines departs from Long Island Macarthur Airport on Fri, Mar 7, arriving at St. Louis Lambert International Airport. One-way Prices start from MYR 456 including taxes and charges.

      • ISP01:00 pm
        3h 5m
        Nonstop
        STL02:00 pm
        Thu, Feb 20|Islip - St. Louis|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Islip to St. Louis flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. F93055

    Frontier Airlines

    09:07

    ISP

    3.0h

    12:09

    MCO

    SMTWTFS
    Search

  2. F92635

    Frontier Airlines

    21:57

    MCO

    2.8h

    23:44

    STL

    SMTWTFS

  3. B6547

    Jetblue Airways

    13:00

    ISP

    2.7h

    15:41

    MCO

    SMTWTFS
    Search

  4. UA2673

    United Airlines

    07:20

    MCO

    3.1h

    09:29

    ORD

    SMTWTFS

  5. UA3579

    United Airlines

    13:15

    ORD

    1.4h

    14:39

    STL

    ------S

  6. B6547

    Jetblue Airways

    13:00

    ISP

    2.7h

    15:41

    MCO

    SMTWTFS
    Search

  7. F92635

    Frontier Airlines

    21:57

    MCO

    2.8h

    23:44

    STL

    SMTWTFS

  8. F91237

    Frontier Airlines

    18:51

    ISP

    2.9h

    21:42

    MCO

    SMTWTFS
    Search

  9. F92635

    Frontier Airlines

    21:57

    MCO

    2.8h

    23:44

    STL

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Islip to St. Louis

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from Islip (ISP) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Islip to St. Louis based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Islip (ISP) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around MYR 1,188.

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20 km. It takes about 40 minutes by taxi.

How to find a cheap flight from Islip to St. Louis

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Islip to St. Louis. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Islip to St. Louis

Cheapest nonstop flight priceMYR 254
Off-season for travelMarch
Peak season for travelNovember
Flight distance1,478.87 km
Popular airlineJetblue Airways

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.