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ACH to BWI: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Baltimore (Baltimore/Washington International Thurgood Marshall Airport)
4,145 mi
6,671 km · 3,602 nm
8h 36m
estimated nonstop flight time
-6h
time difference · heading northwest
See live ACH→BWI fares Phone-only fares on this route — call free
Flight time details
4,145 miles nonstop takes roughly 8h 36m 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
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, 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 BWI
- DCA · Ronald Reagan Washington National Airport30 mi away
- IAD · Washington Dulles International Airport45 mi away
- FME · Tipton Airport8 mi away
- ANP · Lee Airport17 mi away
Frequently asked questions
How far is ACH from BWI?
The flight distance from Altenrhein (ACH) to Baltimore (BWI) is 4,145 miles (6,671 km, 3,602 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to BWI?
A nonstop flight takes about 8h 36m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ACH to BWI?
Nonstop service on ACH–BWI depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 8h 36m nonstop estimate.
What is the time difference between Altenrhein and Baltimore?
Baltimore is 6 hours behind Altenrhein.
What is the cheapest way to fly from ACH to BWI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–BWI that never appear on search engines, with no booking fees.
Why are some ACH to BWI fares phone-only?
Consolidator contracts let us sell certain ACH–BWI tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.