Frontier AirlinesDepart20:52
Tue, Dec 15AUS → SFO
4h 51m · 1 stop
$83one way, per person
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- Cheapest fare
- $83
- Cheapest month
- December
- Direct flights
- Not recently
- Quickest trip
- 4h 51m
Frontier Airlines · Tue, Dec 15
from $83
Usually 1+ stop
2,410 km
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Cheapest month to fly from Austin to San Francisco
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Austin to San Francisco
Austin (AUS) and San Francisco (SFO) are about 2,410 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 4h 51m. Over the next few months, one-way fares start from $83, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Austin to San Francisco?
The cheapest one-way fare we've seen recently is $83 with Frontier Airlines, departing Tuesday, December 15, 2026. Over the coming months, the lowest fare in each month ranges from $83 to $99.
What is the cheapest month to fly from Austin to San Francisco?
December 2026 currently has the lowest fares, from $83 one way.
Are there direct flights from Austin to San Francisco?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Austin to San Francisco?
The quickest journey we've seen takes about 4h 51m. Austin and San Francisco are around 2,410 km apart.
Which airlines fly from Austin to San Francisco?
Recent fares on this route were with Frontier Airlines.
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