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SGD to ALN: distance & flight time
Soenderborg (Sønderborg Airport) → Alton/St Louis (St Louis Regional Airport)
4,425 mi
7,121 km · 3,845 nm
9h 9m
estimated nonstop flight time
—
time difference · heading northwest
See live SGD→ALN fares Phone-only fares on this route — call free
Flight time details
4,425 miles nonstop takes roughly 9h 9m gate to gate, flying northwest. 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
- SGD — Sønderborg Airport · Soenderborg, Denmark
- ALN — St Louis Regional Airport · Alton/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 SGD
- FLF · Flensburg-Schäferhaus Airport21 mi away
- SKS · Skrydstrup Air Base27 mi away
- WBG · Schleswig Air Base37 mi away
- ODE · Odense Airport41 mi away
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
Frequently asked questions
How far is SGD from ALN?
The flight distance from Soenderborg (SGD) to Alton/St Louis (ALN) 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 SGD to ALN?
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 SGD to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SGD–ALN that never appear on search engines, with no booking fees.