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WBU to GAI: distance & flight time
Boulder (Boulder Municipal Airport) → Gaithersburg (Montgomery County Airpark)
1,489 mi
2,396 km · 1,294 nm
3h 42m
estimated nonstop flight time
+2h
time difference · heading east
See live WBU→GAI fares Phone-only fares on this route — call free
Flight time details
1,489 miles nonstop takes roughly 3h 42m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
Near GAI
Frequently asked questions
How far is WBU from GAI?
The flight distance from Boulder (WBU) to Gaithersburg (GAI) is 1,489 miles (2,396 km, 1,294 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to GAI?
A nonstop flight takes about 3h 42m 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 Boulder and Gaithersburg?
Gaithersburg is 2 hours ahead of Boulder.
What is the cheapest way to fly from WBU to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–GAI that never appear on search engines, with no booking fees.