Your next trip, last seen at €129
Lowest observedFrontier Airlines · 2 stops · One wayWhen 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
- Lowest observed
- €129, departing 7 Jan 2027 (Last checked: 18 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Allegiant Air, Breeze Airways, Frontier Airlines, JetBlue
- Typical journey time
- 25h 11m
About this route
Explore the fares we observed from Chicago to Islip. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,218 km
- Typical journey time
- 25h 11m
- Seen on fares with a connection
- Frontier Airlines, Breeze Airways, JetBlue, Allegiant Air
- Alternative airports
- CGX, DPA, MDW, PWK, RFD
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
Airport to city: straight-line distance
- Chicago Midway International Airport (MDW) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 14 km.
- Chicago O'Hare International Airport (ORD) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 25 km.
- Chicago Rockford International Airport (RFD) → Chicago, city gazetteer reference point (41.8781, -87.6298): ≈ 126 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.
Lowest one-way fare we saw per airline
Cheapest airline from Chicago to Islip: Frontier Airlines, from €129 (checked 18 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €129Jan 7, 2027 | 66 |
| Breeze Airways | €140Jan 13, 2027 | 7 |
| JetBlue | €173Jan 8, 2027 | 6 |
| Allegiant Air | €187Nov 12, 2026 | 4 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Chicago to Islip?
The lowest fare Routavio has observed is €129, found on 18 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Chicago to Islip?
In our observations January 2027 is the cheapest month so far, at €129.
Are there direct flights from Chicago to Islip?
Our data holds no non-stop flight from Chicago to Islip. The fares on this page include at least one stop.
Which airlines fly from Chicago to Islip?
Routavio has seen these carriers on the route: Allegiant Air, Breeze Airways, Frontier Airlines, JetBlue.
How long does the flight from Chicago to Islip take?
Across the 88 fares Routavio observed, the average journey time is 24h 39m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Chicago to Islip fares were non-stop?
None of the 88 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Chicago to Islip?
Cheapest airline from Chicago to Islip: Frontier Airlines, from €129 (checked 18 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 25 Oct 2026