Distance From Ascension Seton Williamson Heliport to San Francisco International Airport

The distance from Ascension Seton Williamson Heliport () to San Francisco International Airport (SFO) is 1491 miles or 2400 kilometers or 1295 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Round Rock ( United States ) to San Francisco ( United States )?

A one-way nonstop (direct) flight between Round Rock and San Francisco takes around 3 hours 25 minutes.

Estimated flight time from Ascension Seton Williamson Heliport, Round Rock, United States to San Francisco International Airport, San Francisco, United States is 3 hours 25 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - SFO

Kilometers		2400 km
Statute Miles		1491 miles
Nautical Miles		1295 nm
Avg. Time of Flight		3 hours 25 minutes

Ascension Seton Williamson Heliport to San Francisco International Airport Flight Route Map - to SFO Flight Path

Location of Ascension Seton Williamson Heliport & San Francisco International Airport is given below.
Click the map to view Round Rock to San Francisco nonstop flight path and travel direction.

Click to see flight route on Google Map between Round Rock, United States and San Francisco, United States. .

Nonstop flight route between Round Rock, United States and San Francisco, United States.

Time Difference Between the Airports • - SFO

Time difference between Round Rock (United States) and San Francisco (United States) is 1 Hours.
San Francisco time is 1 Hours behind Round Rock.

Location	Local Time
Round Rock (United States)	2026-03-21, 23:48:23 MDT
San Francisco (United States)	2026-03-21, 22:48:23 PDT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Ascension Seton Williamson Heliport ( / ) Round Rock, United States

Destination

San Francisco International Airport (SFO / KSFO) San Francisco, United States