Need help booking?
Unpublished phone-only deals available
DU9 to STL: distance & flight time
Dunnville (Dunnville Airport) → St. Louis (St Louis Lambert International Airport)
631 mi
1,015 km · 548 nm
1h 50m
estimated nonstop flight time
—
time difference · heading southwest
See live DU9→STL fares Phone-only fares on this route — call free
Flight time details
631 miles nonstop takes roughly 1h 50m gate to gate, flying southwest. 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
- DU9 — Dunnville Airport · Dunnville, Canada
- STL — St Louis Lambert International Airport · St. Louis, 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 DU9
Near STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Frequently asked questions
How far is DU9 from STL?
The flight distance from Dunnville (DU9) to St. Louis (STL) is 631 miles (1,015 km, 548 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DU9 to STL?
A nonstop flight takes about 1h 50m 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 DU9 to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DU9–STL that never appear on search engines, with no booking fees.