Need help booking?
Unpublished phone-only deals available
HAF to GAI: distance & flight time
Half Moon Bay (Half Moon Bay Airport) → Gaithersburg (Montgomery County Airpark)
2,434 mi
3,917 km · 2,115 nm
5h 14m
estimated nonstop flight time
—
time difference · heading east
See live HAF→GAI fares Phone-only fares on this route — call free
Flight time details
2,434 miles nonstop takes roughly 5h 14m 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
- HAF — Half Moon Bay Airport · Half Moon Bay, 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 HAF
- SFO · San Francisco International Airport10 mi away
- SQL · San Carlos Airport14 mi away
- OAK · Metropolitan Oakland International Airport21 mi away
- PAO · Palo Alto Airport of Santa Clara County21 mi away
Near GAI
Frequently asked questions
How far is HAF from GAI?
The flight distance from Half Moon Bay (HAF) to Gaithersburg (GAI) is 2,434 miles (3,917 km, 2,115 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HAF to GAI?
A nonstop flight takes about 5h 14m 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 HAF to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HAF–GAI that never appear on search engines, with no booking fees.