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SIN to ALN: distance & flight time
Singapore (Singapore Changi Airport) → Alton/St Louis (St Louis Regional Airport)
9,517 mi
15,316 km · 8,270 nm
19h 8m
estimated nonstop flight time
—
time difference · heading north
See live SIN→ALN fares Phone-only fares on this route — call free
Flight time details
9,517 miles nonstop takes roughly 19h 8m gate to gate, flying north. 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
- SIN — Singapore Changi Airport · Singapore, Singapore
- 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 SIN
- QPG · Paya Lebar Air Base6 mi away
- XSP · Seletar Airport10 mi away
- BTH · Hang Nadim International Airport18 mi away
- TGA · Tengah Air Base20 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 SIN from ALN?
The flight distance from Singapore (SIN) to Alton/St Louis (ALN) is 9,517 miles (15,316 km, 8,270 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIN to ALN?
A nonstop flight takes about 19h 8m 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 SIN to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIN–ALN that never appear on search engines, with no booking fees.