Islip to Gaithersburg (ISP–GAI) — Airlines, Schedules & Connections

ISP Airport Page →
243 mi airlines charter/private
On-time Some delays Frequent delays
Flight Schedule Charter / private Verified 1mo ago
Charter / private route. No scheduled airline service — operated by charter & private aviation.
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 More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Islip to Gaithersburg
Flown by charter / private operators — no scheduled airline service.
243 mi 1h 24m nonstop

ISP–GAI has no scheduled airline service; it is flown by charter / private operators.

Also explore ISP Routes GAI Routes ISP Live Flights GAI Live Flights ISP Delays
All flights from Gaithersburg (GAI) Gaithersburg to Islip flights
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
ISP → GAI
100%
Generally reliable. Most flights run on time.
Departing
100%
Return
GAI → ISP
100%
Generally reliable. Most flights run on time.
Arriving
100%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ISP delays →
Alternatives

Other ways to reach Gaithersburg from Islip

Nearby airports with service to Montgomery County Airpark.
Metric ISP→GAI JFK→GAI LGA→GAI
Distance from ISP – 37 mi 40 mi
Nonstop airlines – 1 –
Weekly flights – – –
Flight time 1h 24m 0h 59m 0h 49m
Departure OTP 100% – –
New York (JFK) to Gaithersburg flights · New York (LGA) to Gaithersburg flights · Teterboro (TEB) to Gaithersburg flights
Airports within 200 miles of ISP with service to Montgomery County Airpark.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
0h
Gaithersburg is 0 hours the same as Islip.
ISP: EDT · GAI: EDT

When it's 6:00 PM in Islip, it's 6:00 PM in Gaithersburg.
Distance & Flight Time
243 mi / 391 km
Nonstop flight time is approximately 1h 24m gate to gate.
Facts

ISP–GAI Quick Facts

Key statistics for the Islip to Gaithersburg route.
Route details
Distance243 mi / 391 km
Flight time1h 24m
Time difference0 hours
Airlines (nonstop)Charter / private
Origin: ISP
Full nameLong Island MacArthur Airport
IATA / ICAOISP / KISP
TimezoneAmerica/New_York
Passengers/yr1.4M
Elevation99 ft / 30 m
Destination: GAI
Full nameMontgomery County Airpark
IATA / ICAOGAI / KGAI
TimezoneAmerica/New_York
Elevation539 ft / 164 m
FAQ

Frequently Asked Questions

Common questions about ISP to GAI flights.
Nonstop flights from Long Island MacArthur Airport to Montgomery County Airpark take about 1h 24m gate to gate. The route covers 243 miles.
Nearby alternatives include JFK, LGA and TEB. See the Alternatives section for a full comparison.
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 ISP to GAI

Long Island MacArthur Airport (ISP) and Montgomery County Airpark (GAI) are connected through multiple connecting hub airports.

ISP to GAI Flight Duration and Schedule

Nonstop flight time from ISP to GAI is about 1 hours 24 minutes gate to gate. The route covers a distance of 243 miles (391 km).

Connecting Options and Alternatives

Nearby alternative airports include New York (JFK), New York (LGA) and Teterboro (TEB).