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ACH to APA: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Denver (Centennial Airport)
5,201 mi
8,370 km · 4,519 nm
10h 40m
estimated nonstop flight time
-8h
time difference · heading northwest
See live ACH→APA fares Phone-only fares on this route — call free
Flight time details
5,201 miles nonstop takes roughly 10h 40m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- APA — Centennial Airport · Denver, 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 mi away
Near APA
- DEN · Denver International Airport22 mi away
- BFK · Buckley Air Force Base10 mi away
- BJC · Rocky Mountain Metropolitan Airport27 mi away
- WBU · Boulder Municipal Airport38 mi away
Frequently asked questions
How far is ACH from APA?
The flight distance from Altenrhein (ACH) to Denver (APA) is 5,201 miles (8,370 km, 4,519 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to APA?
A nonstop flight takes about 10h 40m 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 Altenrhein and Denver?
Denver is 8 hours behind Altenrhein.
What is the cheapest way to fly from ACH to APA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–APA that never appear on search engines, with no booking fees.