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SEA to GAI: distance & flight time
Seattle (Seattle Tacoma International Airport) → Gaithersburg (Montgomery County Airpark)
2,306 mi
3,711 km · 2,004 nm
4h 59m
estimated nonstop flight time
+3h
time difference · heading east
See live SEA→GAI fares Phone-only fares on this route — call free
Flight time details
2,306 miles nonstop takes roughly 4h 59m 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
- SEA — Seattle Tacoma International Airport · Seattle, 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 SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Near GAI
Frequently asked questions
How far is SEA from GAI?
The flight distance from Seattle (SEA) to Gaithersburg (GAI) is 2,306 miles (3,711 km, 2,004 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to GAI?
A nonstop flight takes about 4h 59m 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 Seattle and Gaithersburg?
Gaithersburg is 3 hours ahead of Seattle.
What is the cheapest way to fly from SEA to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–GAI that never appear on search engines, with no booking fees.