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GAI to SIG: distance & flight time
Gaithersburg (Montgomery County Airpark) → San Juan (Fernando Luis Ribas Dominicci Airport)
1,577 mi
2,538 km · 1,370 nm
3h 34m
estimated nonstop flight time
Same time
time difference · heading southeast
See live GAI→SIG fares Phone-only fares on this route — call free
Flight time details
1,577 miles nonstop takes roughly 3h 34m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- SIG — Fernando Luis Ribas Dominicci Airport · San Juan, Puerto Rico
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near GAI
Near SIG
- SJU · Luis Munoz Marin International Airport6 mi away
- FAJ · Diego Jimenez Torres Airport30 mi away
- NRR · José Aponte de la Torre Airport33 mi away
- ARE · Antonio Nery Juarbe Pol Airport38 mi away
Frequently asked questions
How far is GAI from SIG?
The flight distance from Gaithersburg (GAI) to San Juan (SIG) is 1,577 miles (2,538 km, 1,370 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to SIG?
A nonstop flight takes about 3h 34m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from GAI to SIG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–SIG that never appear on search engines, with no booking fees.