Islip to St Louis flights

Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Islip to St Louis is €160 (checked on 25 Oct 2026).

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Lowest observed

€160

Cheapest month

October 2026

Last checked

25 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €160

30 Oct 2026

1 stop · One way

Cheapest observed day · Last checked: 25 Oct 2026

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

One-way fare

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Lowest observed: €160, departing 30 Oct 2026 (Last checked: 25 Oct 2026)One-way fareCheck live prices for this route
Airlines seen: Breeze Airways, Frontier Airlines, JetBlue
Typical journey time: 29h 22m

Short answer

Routavio has seen Breeze Airways fares from Islip to St Louis. The lowest fare Routavio's own searches returned is €160, seen on 25 Oct 2026. October 2026 is the cheapest month in our observations, at €160. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare.

About this route

Explore the fares we observed from Islip to St Louis. Prices move often, so pick your dates to see the latest options.

Route distance: 1,480 km
Typical journey time: 29h 22m
Seen on fares with a connection: Breeze Airways, Frontier Airlines, JetBlue
Alternative airports: SUS

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Airport to city: straight-line distance

St. Louis Lambert International Airport (STL) → St Louis, city gazetteer reference point (38.6270, -90.1994): ≈ 20 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much is a flight from Islip to St Louis?

The lowest fare Routavio has observed is €160, found on 25 Oct 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from Islip to St Louis?

In our observations October 2026 is the cheapest month so far, at €160.

Are there direct flights from Islip to St Louis?

Our data holds no non-stop flight from Islip to St Louis. The fares on this page include at least one stop.

Which airlines fly from Islip to St Louis?

Routavio has seen these carriers on the route: Breeze Airways, Frontier Airlines, JetBlue.

How long does the flight from Islip to St Louis take?

Across the 106 fares Routavio observed, the average journey time is 27h 47m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Islip to St Louis fares were non-stop?

None of the 107 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide