St Louis to Islip (STL–ISP) — Airlines, Schedules & Connections

STL Airport Page →
926 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 11 1-stop flights Verified 1w ago
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 10 hubs
BWI Baltimore 4h WN → WN Baltimore (BWI) to Islip flights
BOS Boston 5h 23m AAIBQR → 9K Boston (BOS) to Islip flights
MCO Orlando 5h 41m F9WN → B6F9WN Orlando (MCO) to Islip flights
TPA Tampa 5h 57m WN → F9WN Tampa (TPA) to Islip flights
MYR Myrtle Beach 6h 8m WN → MX Myrtle Beach (MYR) to Islip flights
FLL Fort Lauderdale 11h 34m WN → B6 Fort Lauderdale (FLL) to Islip flights
RDU Raleigh/Durham 13h 37m EJAWN → MX Raleigh/Durham (RDU) to Islip flights
RSW Fort Myers 13h 50m WN → MX Fort Myers (RSW) to Islip flights
CHS Charleston 14h 37m WN → MX Charleston (CHS) to Islip flights
RIC Richmond 23h 45m SY → MX Richmond (RIC) to Islip flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
St Louis to Islip
Connecting service available through multiple hubs.
1 Airlines 926 mi 2h 30m nonstop +1h ahead

STL–ISP had nonstop service from Sun Country Airlines, last on the schedule in September 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 926 miles in 2h 30m.

Also explore Browse available seat maps STL Routes ISP Routes STL Live Flights ISP Live Flights STL Delays ISP Delays
All flights from Islip (ISP) Islip to St Louis flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop STL–ISP service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
SY Sun Country Airlines 1 – – 97% – –
Alliance coverage
Unaffiliated: SY (1 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for STL to ISP.
1-STOP
One-Stop Connections
11
Hubs
~4h
Fastest
~23h
Longest
BWI ~4h 0m ORF ~4h 51m BOS ~5h 23m MCO ~5h 41m TPA ~5h 57m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
469
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
STL → ISP
97%
Generally reliable. Most flights run on time.
Departing
97%
Arriving
100%
Return
ISP → STL
50%
Frequent delays expected. Consider flexible booking.
Departing
50%
Arriving
100%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. STL delays → ISP delays →
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+1h
Islip is 1 hour ahead of St Louis.
STL: CDT · ISP: EDT

When it's 6:00 PM in St Louis, it's 7:00 PM in Islip.
Distance & Flight Time
926 mi / 1,491 km
Nonstop flight time is approximately 2h 30m gate to gate.
Facts

STL–ISP Quick Facts

Key statistics for the St Louis to Islip route.
Route details
Distance926 mi / 1,491 km
Flight time2h 30m
Time difference+1 hour
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: STL
Full nameSt. Louis Lambert International Airport
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: ISP
Full nameLong Island MacArthur Airport
IATA / ICAOISP / KISP
TimezoneAmerica/New_York
Passengers/yr1.4M
Elevation99 ft / 30 m
FAQ

Frequently Asked Questions

Common questions about STL to ISP flights.
Nonstop flights from St. Louis Lambert International Airport to Long Island MacArthur Airport take about 2h 30m gate to gate. The route covers 926 miles.
1 airline operated the nonstop from STL to ISP: Sun Country Airlines. The last scheduled nonstop was in September 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in September 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 2h 30m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Baltimore/Washington International Thurgood Marshall, Boston Logan and Orlando.
On a single ticket, yes. Your bags are checked through to ISP and move between planes without you. On two separate tickets you collect your bags at the connecting airport and recheck them, so build in extra layover time.
Islip is 1 hour ahead of St Louis.
Yes, return flights from ISP to STL are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from STL to ISP

St. Louis Lambert International Airport (STL) and Long Island MacArthur Airport (ISP) had nonstop service from Sun Country Airlines, last on the schedule in September 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

STL to ISP Flight Duration and Schedule

Nonstop flight time from STL to ISP is about 2 hours 30 minutes gate to gate. The route covers a distance of 926 miles (1,491 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Baltimore/Washington International Thurgood Marshall, Boston Logan and Orlando. Two-stop connections are also available via intermediate hubs.