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DPA to GAI: distance & flight time
West Chicago (Dupage Airport) → Gaithersburg (Montgomery County Airpark)
611 mi
984 km · 531 nm
1h 48m
estimated nonstop flight time
+1h
time difference · heading east
See live DPA→GAI fares Phone-only fares on this route — call free
Flight time details
611 miles nonstop takes roughly 1h 48m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- DPA — Dupage Airport · West Chicago, 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 DPA
- ORD · Chicago O'Hare International Airport18 mi away
- LOT · Lewis University Airport22 mi away
- PWK · Chicago Executive Airport23 mi away
- MDW · Chicago Midway International Airport27 mi away
Near GAI
Frequently asked questions
How far is DPA from GAI?
The flight distance from West Chicago (DPA) to Gaithersburg (GAI) is 611 miles (984 km, 531 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DPA to GAI?
A nonstop flight takes about 1h 48m 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 West Chicago and Gaithersburg?
Gaithersburg is 1 hour ahead of West Chicago.
What is the cheapest way to fly from DPA to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DPA–GAI that never appear on search engines, with no booking fees.