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GAI to SEM: distance & flight time
Gaithersburg (Montgomery County Airpark) → Selma (Craig Field)
724 mi
1,165 km · 629 nm
2h 2m
estimated nonstop flight time
-1h
time difference · heading southwest
See live GAI→SEM fares Phone-only fares on this route — call free
Flight time details
724 miles nonstop takes roughly 2h 2m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- SEM — Craig Field · Selma, 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 GAI
Near SEM
Frequently asked questions
How far is GAI from SEM?
The flight distance from Gaithersburg (GAI) to Selma (SEM) is 724 miles (1,165 km, 629 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to SEM?
A nonstop flight takes about 2h 2m 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 Gaithersburg and Selma?
Selma is 1 hour behind Gaithersburg.
What is the cheapest way to fly from GAI to SEM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–SEM that never appear on search engines, with no booking fees.