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GUS to GAI: distance & flight time
Peru (Grissom Air Reserve Base) → Gaithersburg (Montgomery County Airpark)
487 mi
784 km · 423 nm
1h 32m
estimated nonstop flight time
Same time
time difference · heading east
See live GUS→GAI fares Phone-only fares on this route — call free
Flight time details
487 miles nonstop takes roughly 1h 32m gate to gate, flying east. 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
- GUS — Grissom Air Reserve Base · Peru, United States
- GAI — Montgomery County Airpark · Gaithersburg, United States
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 GUS
- OKK · Kokomo Municipal Airport10 mi away
- LAF · Purdue University Airport44 mi away
- AID · Anderson Municipal Darlington Field47 mi away
- MIE · Delaware County Johnson Field49 mi away
Near GAI
Frequently asked questions
How far is GUS from GAI?
The flight distance from Peru (GUS) to Gaithersburg (GAI) is 487 miles (784 km, 423 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GUS to GAI?
A nonstop flight takes about 1h 32m 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 GUS to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GUS–GAI that never appear on search engines, with no booking fees.