Aspen to San Francisco (ASE–SFO) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
ASE–SFO is served by 2 airlines with nonstop service. United Airlines and TWY lead the route. The flight covers 846 miles in approximately 2h 48m. Beyond nonstop, 58 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines | 7 | E75L | 2h48 | – | Star Alliance | – |
| TWY TWY | 0 | – | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach San Francisco from Aspen
| Metric | ASE→SFO | EGE→SFO | MTJ→SFO |
|---|---|---|---|
| Distance from ASE | – | 29 mi | 74 mi |
| Nonstop airlines | 2 | 6 | 4 |
| Weekly flights | 7 | – | – |
| Flight time | 2h 48m | 3h 6m | 1h 53m |
Travel Essentials
ASE: MDT · SFO: PDT
When it's 6:00 PM in Aspen, it's 5:00 PM in San Francisco.
BART from SFO station (free AirTrain from any terminal to the station) to downtown San Francisco takes 30–40 minutes ($10.45 to Embarcadero). Traffic on 101 can make taxis and ride-hails much slower during peak hours; BART skips all of that. BART also reaches Oakland, Berkeley, and Millbrae for Caltrain connections.Ride-hails from SFO use a dedicated garage pickup area; follow signs. Taxis are metered; downtown SF costs $40–60. Caltrain to the Peninsula (Mountain View, Palo Alto, San Jose) requires taking BART to Millbrae station for the transfer. Rental cars are at a consolidated facility accessible by AirTrain.
Coastal fog dominates the climate pattern. The thick marine layer ("Karl the Fog") rolls into SFO from the Pacific regularly in summer (June–September), causing significant low-visibility delays even on days that appear sunny inland. Morning fog burns off by afternoon most days, but persistent IFR conditions can last all day. This is the primary flight disruption risk at SFO.
Temperatures are mild year-round (10–20°C) with little seasonal variation. Winters bring rain (December–March) and occasional atmospheric river events that cause brief but intense flooding on the 101. Summers are cool. Pack a light jacket year-round. Wind off the bay affects small aircraft approach paths.
ASE–SFO Quick Facts
Frequently Asked Questions
Flights from ASE to SFO
Aspen-Pitkin County Airport (Sardy Field) (ASE) and San Francisco International Airport (SFO) are connected by nonstop service from TWY and United Airlines. With 7 weekly departures, this is a regularly served route.
ASE to SFO Flight Duration and Schedule
Nonstop flight time from ASE to SFO ranges from 2 hours 48 minutes. The route covers a distance of 846 miles (1,361 km). There are approximately 7 weekly flights outbound and 10 return, totaling 17 flights per week in both directions.
Connecting Options and Alternatives
58 one-stop connections are available, with the fastest taking approximately 3 hours via RNO. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Eagle (EGE), Montrose (MTJ) and Hayden (HDN).