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YSU to STL: distance & flight time
Summerside (Summerside Airport) → St. Louis (St Louis Lambert International Airport)
1,442 mi
2,321 km · 1,253 nm
3h 36m
estimated nonstop flight time
-2h
time difference · heading west
See live YSU→STL fares Phone-only fares on this route — call free
Flight time details
1,442 miles nonstop takes roughly 3h 36m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- YSU — Summerside Airport · Summerside, Canada
- STL — St Louis Lambert International Airport · 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 YSU
- YYG · Charlottetown Airport36 mi away
- YQM · Greater Moncton International Airport46 mi away
- YCH · Miramichi Airport86 mi away
- YHZ · Halifax / Stanfield International Airport109 mi away
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
Frequently asked questions
How far is YSU from STL?
The flight distance from Summerside (YSU) to St. Louis (STL) is 1,442 miles (2,321 km, 1,253 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSU to STL?
A nonstop flight takes about 3h 36m 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 Summerside and St. Louis?
St. Louis is 2 hours behind Summerside.
What is the cheapest way to fly from YSU to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSU–STL that never appear on search engines, with no booking fees.