Dulles to San Marcos (IAD–HYI) — 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–HYI has no scheduled airline service; it is flown by charter / private operators.
On-Time Performance
Travel Essentials
IAD: EDT · HYI: CDT
When it's 6:00 PM in Dulles, it's 5:00 PM in San Marcos.
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–HYI Quick Facts
Frequently Asked Questions
Flights from IAD to HYI
Washington Dulles International Airport (IAD) and San Marcos Regional Airport (HYI) are connected through multiple connecting hub airports.
IAD to HYI Flight Duration and Schedule
Nonstop flight time from IAD to HYI is about 4 hours 16 minutes gate to gate. The route covers a distance of 1,316 miles (2,118 km).