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ALN to SGD: distance & flight time
Alton/St Louis (St Louis Regional Airport) → Soenderborg (Sønderborg Airport)
4,425 mi
7,121 km · 3,845 nm
9h 9m
estimated nonstop flight time
—
time difference · heading northeast
See live ALN→SGD fares Phone-only fares on this route — call free
Flight time details
4,425 miles nonstop takes roughly 9h 9m gate to gate, flying northeast. 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
- ALN — St Louis Regional Airport · Alton/St Louis, United States
- SGD — Sønderborg Airport · Soenderborg, Denmark
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 ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 mi away
Near SGD
- FLF · Flensburg-Schäferhaus Airport21 mi away
- SKS · Skrydstrup Air Base27 mi away
- WBG · Schleswig Air Base37 mi away
- ODE · Odense Airport41 mi away
Frequently asked questions
How far is ALN from SGD?
The flight distance from Alton/St Louis (ALN) to Soenderborg (SGD) is 4,425 miles (7,121 km, 3,845 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALN to SGD?
A nonstop flight takes about 9h 9m 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 ALN to SGD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALN–SGD that never appear on search engines, with no booking fees.