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STL to SIG: distance & flight time
St. Louis (St Louis Lambert International Airport) → San Juan (Fernando Luis Ribas Dominicci Airport)
2,021 mi
3,252 km · 1,756 nm
4h 26m
estimated nonstop flight time
+1h
time difference · heading southeast
See live STL→SIG fares Phone-only fares on this route — call free
Flight time details
2,021 miles nonstop takes roughly 4h 26m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- SIG — Fernando Luis Ribas Dominicci Airport · San Juan, Puerto Rico
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 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
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
Frequently asked questions
How far is STL from SIG?
The flight distance from St. Louis (STL) to San Juan (SIG) is 2,021 miles (3,252 km, 1,756 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to SIG?
A nonstop flight takes about 4h 26m 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 time difference between St. Louis and San Juan?
San Juan is 1 hour ahead of St. Louis.
What is the cheapest way to fly from STL to SIG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–SIG that never appear on search engines, with no booking fees.