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ACH to DCA: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Washington (Ronald Reagan Washington National Airport)
4,175 mi
6,719 km · 3,628 nm
8h 39m
estimated nonstop flight time
-6h
time difference · heading northwest
See live ACH→DCA fares Phone-only fares on this route — call free
Flight time details
4,175 miles nonstop takes roughly 8h 39m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- DCA — Ronald Reagan Washington National Airport · Washington, 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 DCA
Frequently asked questions
How far is ACH from DCA?
The flight distance from Altenrhein (ACH) to Washington (DCA) is 4,175 miles (6,719 km, 3,628 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to DCA?
A nonstop flight takes about 8h 39m 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 Washington?
Washington is 6 hours behind Altenrhein.
What is the cheapest way to fly from ACH to DCA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–DCA that never appear on search engines, with no booking fees.