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Cheap Flight Deals from St. Louis to Islip

For as little as € 64, you can take your next adventure to Islip without breaking the bank. Choose between one-way and return tickets from St. Louis below.

  • One way
  • Return
      • STL17:20
        13h 47m
        1 stop
        ISP08:07
        Wed, Feb 19|St. Louis - Islip|Frontier Airlines
        € 64€ 152
        57% OFF
        57% OFF
        € 152€ 64

        Choose Frontier Airlines flights from St. Louis to Islip. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Feb 19, arriving at Long Island Macarthur Airport. One-way Prices start from € 64 including taxes and charges.

      • STL17:20
        13h 32m
        1 stop
        ISP07:52
        Sat, Mar 1|St. Louis - Islip|Frontier Airlines
        € 81€ 152
        47% OFF
        47% OFF
        € 152€ 81

        Choose Frontier Airlines flights from St. Louis to Islip. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Mar 1, arriving at Long Island Macarthur Airport. One-way Prices start from € 81 including taxes and charges.

      • STL17:24
        25h 40m
        1 stop
        ISP20:04
        Wed, Mar 26|St. Louis - Islip|Frontier Airlines
        € 134€ 152
        12% OFF
        12% OFF
        € 152€ 134

        Choose Frontier Airlines flights from St. Louis to Islip. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Mar 26, arriving at Long Island Macarthur Airport. One-way Prices start from € 134 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        ISP02:00 pm
        Sun, Feb 23|St. Louis - Islip|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.

St. Louis to Islip Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA3564

    United Airlines

    07:05

    STL

    2.5h

    10:34

    EWR

    SMTWTFS
    Search

  2. UA1409

    United Airlines

    11:30

    EWR

    3.0h

    14:27

    MCO

    SMTWTFS

  3. F93056

    Frontier Airlines

    07:13

    MCO

    2.8h

    10:00

    ISP

    SMTWTFS

  4. UA4426

    United Airlines

    10:39

    STL

    1.4h

    12:05

    ORD

    SMTWTFS
    Search

  5. UA455

    United Airlines

    13:05

    ORD

    2.8h

    16:52

    MCO

    SMTWTFS

  6. F91238

    Frontier Airlines

    05:15

    MCO

    2.6h

    07:52

    ISP

    SMTWTFS

  7. WN3433

    Southwest Airlines

    13:40

    STL

    2.4h

    15:05

    DEN

    S-T-T-S
    Search

  8. F91734

    Frontier Airlines

    00:46

    DEN

    3.7h

    06:30

    MCO

    SMTWTFS

  9. F93056

    Frontier Airlines

    07:13

    MCO

    2.8h

    10:00

    ISP

    SMTWTFS

  10. UA1840

    United Airlines

    15:32

    STL

    1.4h

    16:54

    ORD

    SMTWTF-
    Search

  11. UA2039

    United Airlines

    17:50

    ORD

    2.9h

    21:41

    MCO

    SMTWTFS

  12. F91238

    Frontier Airlines

    05:15

    MCO

    2.6h

    07:52

    ISP

    SMTWTFS

  13. UA2121

    United Airlines

    16:50

    STL

    2.3h

    19:06

    IAH

    SMTWTFS
    Search

  14. UA750

    United Airlines

    19:50

    IAH

    2.4h

    23:15

    MCO

    S--WT-S

  15. F91238

    Frontier Airlines

    05:15

    MCO

    2.6h

    07:52

    ISP

    SMTWTFS

  16. F92636

    Frontier Airlines

    17:20

    STL

    2.5h

    20:51

    MCO

    SMTWTFS
    Search

  17. F93056

    Frontier Airlines

    07:13

    MCO

    2.8h

    10:00

    ISP

    SMTWTFS

  18. F92636

    Frontier Airlines

    17:20

    STL

    2.5h

    20:51

    MCO

    SMTWTFS
    Search

  19. F91238

    Frontier Airlines

    05:15

    MCO

    2.6h

    07:52

    ISP

    SMTWTFS

  20. F92630

    Frontier Airlines

    17:47

    STL

    2.5h

    21:19

    MCO

    S------
    Search

  21. F93056

    Frontier Airlines

    07:13

    MCO

    2.8h

    10:00

    ISP

    SMTWTFS

  22. F92630

    Frontier Airlines

    17:47

    STL

    2.5h

    21:19

    MCO

    S------
    Search

  23. F91238

    Frontier Airlines

    05:15

    MCO

    2.6h

    07:52

    ISP

    SMTWTFS
Find more flights and airlines

Best Time to Book Flights from St. Louis to Islip

Explore the best time to buy affordable tickets to Islip with our price trend chart, which predicts how flight prices will change in the coming weeks from previous data.

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

FAQ

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

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

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

    According to Trip.com's data, the lowest price is around € 340.

  • What is the transportation method from the main airport to downtown in Islip?

    • The distance from Long Island Macarthur Airport to downtown is about 11km, by taxi about 30 minutes.

  • How many airports in Islip (ISP)?

    There are 1 airport(s) in Islip (ISP): Long Island Macarthur Airport.

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

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
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 St. Louis to Islip

Cheapest direct flight price€ 63
Off-season for travelMarch
Peak season for travelJanuary
Flight distance1,478.87km
Popular airlineFrontier Airlines

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