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OJC to GAI: distance & flight time
Olathe (Johnson County Executive Airport) → Gaithersburg (Montgomery County Airpark)
942 mi
1,516 km · 819 nm
2h 31m
estimated nonstop flight time
+1h
time difference · heading east
See live OJC→GAI fares Phone-only fares on this route — call free
Flight time details
942 miles nonstop takes roughly 2h 31m gate to gate, flying east. 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
- OJC — Johnson County Executive Airport · Olathe, 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 OJC
- JCI · New Century Aircenter Airport8 mi away
- MKC · Charles B. Wheeler Downtown Airport21 mi away
- LWC · Lawrence Municipal Airport28 mi away
- MCI · Kansas City International Airport31 mi away
Near GAI
Frequently asked questions
How far is OJC from GAI?
The flight distance from Olathe (OJC) to Gaithersburg (GAI) is 942 miles (1,516 km, 819 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OJC to GAI?
A nonstop flight takes about 2h 31m 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 Olathe and Gaithersburg?
Gaithersburg is 1 hour ahead of Olathe.
What is the cheapest way to fly from OJC to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OJC–GAI that never appear on search engines, with no booking fees.