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SMO to GAI: distance & flight time
Santa Monica (Santa Monica Municipal Airport) → Gaithersburg (Montgomery County Airpark)
2,298 mi
3,698 km · 1,997 nm
4h 58m
estimated nonstop flight time
+3h
time difference · heading east
See live SMO→GAI fares Phone-only fares on this route — call free
Flight time details
2,298 miles nonstop takes roughly 4h 58m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- SMO — Santa Monica Municipal Airport · Santa Monica, 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 SMO
- LAX · Los Angeles International Airport6 mi away
- HHR · Jack Northrop Field Hawthorne Municipal Airport9 mi away
- BUR · Bob Hope Airport14 mi away
- VNY · Van Nuys Airport14 mi away
Near GAI
Frequently asked questions
How far is SMO from GAI?
The flight distance from Santa Monica (SMO) to Gaithersburg (GAI) is 2,298 miles (3,698 km, 1,997 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SMO to GAI?
A nonstop flight takes about 4h 58m 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 Santa Monica and Gaithersburg?
Gaithersburg is 3 hours ahead of Santa Monica.
What is the cheapest way to fly from SMO to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SMO–GAI that never appear on search engines, with no booking fees.