Dulles to Sion (IAD–SIR) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
IAD–SIR has no scheduled airline service; it is flown by charter / private operators.
On-Time Performance
Travel Essentials
IAD: EDT · SIR: CEST
When it's 6:00 PM in Dulles, it's 12:00 AM (next day) in Sion.
US passport holders enter Switzerland visa-free for stays up to 90 days within any 180-day period. This falls under the Schengen area rules, so the 90-day limit is shared across all Schengen countries. No advance application is needed. Passport must be valid for at least 3 months beyond the planned departure from the Schengen area.
WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).
IAD–SIR Quick Facts
Frequently Asked Questions
Flights from IAD to SIR
Washington Dulles International Airport (IAD) and Sion Airport (SIR) are connected through multiple connecting hub airports.
IAD to SIR Flight Duration and Schedule
Nonstop flight time from IAD to SIR is about 7 hours 1 minutes gate to gate. The route covers a distance of 4,133 miles (6,651 km).