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SIG to ALN: distance & flight time
San Juan (Fernando Luis Ribas Dominicci Airport) → Alton/St Louis (St Louis Regional Airport)
2,013 mi
3,239 km · 1,749 nm
4h 25m
estimated nonstop flight time
—
time difference · heading northwest
See live SIG→ALN fares Phone-only fares on this route — call free
Flight time details
2,013 miles nonstop takes roughly 4h 25m 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
- SIG — Fernando Luis Ribas Dominicci Airport · San Juan, Puerto Rico
- 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 SIG
- SJU · Luis Munoz Marin International Airport6 mi away
- FAJ · Diego Jimenez Torres Airport30 mi away
- NRR · José Aponte de la Torre Airport33 mi away
- ARE · Antonio Nery Juarbe Pol Airport38 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 SIG from ALN?
The flight distance from San Juan (SIG) to Alton/St Louis (ALN) is 2,013 miles (3,239 km, 1,749 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIG to ALN?
A nonstop flight takes about 4h 25m 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 SIG to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIG–ALN that never appear on search engines, with no booking fees.