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GAI to OOM: distance & flight time
Gaithersburg (Montgomery County Airpark) → Cooma (Cooma Snowy Mountains Airport)
9,935 mi
15,989 km · 8,633 nm
19h 57m
estimated nonstop flight time
+14h
time difference · heading west
See live GAI→OOM fares Phone-only fares on this route — call free
Flight time details
9,935 miles nonstop takes roughly 19h 57m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- OOM — Cooma Snowy Mountains Airport · Cooma, Australia
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 OOM
- CYG · Corryong Airport61 mi away
- MIM · Merimbula Airport66 mi away
- CBR · Canberra International Airport70 mi away
- MYA · Moruya Airport71 mi away
Frequently asked questions
How far is GAI from OOM?
The flight distance from Gaithersburg (GAI) to Cooma (OOM) is 9,935 miles (15,989 km, 8,633 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to OOM?
A nonstop flight takes about 19h 57m 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 Cooma?
Cooma is 14 hours ahead of Gaithersburg.
What is the cheapest way to fly from GAI to OOM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–OOM that never appear on search engines, with no booking fees.