Need help booking?
Unpublished phone-only deals available
GAI to PSS: distance & flight time
Gaithersburg (Montgomery County Airpark) → Posadas (Libertador Gral D Jose De San Martin Airport)
4,797 mi
7,721 km · 4,169 nm
9h 52m
estimated nonstop flight time
+1h
time difference · heading south
See live GAI→PSS fares Phone-only fares on this route — call free
Flight time details
4,797 miles nonstop takes roughly 9h 52m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- PSS — Libertador Gral D Jose De San Martin Airport · Posadas, Argentina
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 PSS
- ENO · Encarnación Airport14 mi away
- AYO · Juan De Ayolas Airport54 mi away
- SRA · Santa Rosa Airport96 mi away
- ELO · El Dorado Airport110 mi away
Frequently asked questions
How far is GAI from PSS?
The flight distance from Gaithersburg (GAI) to Posadas (PSS) is 4,797 miles (7,721 km, 4,169 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to PSS?
A nonstop flight takes about 9h 52m 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 time difference between Gaithersburg and Posadas?
Posadas is 1 hour ahead of Gaithersburg.
What is the cheapest way to fly from GAI to PSS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–PSS that never appear on search engines, with no booking fees.