$79 Find Cheap Southwest Flights from San Francisco to Denver

When to Book Flights with Southwest from San Francisco to Denver

• How far in advance should I book tickets for a flight with Southwest from San Francisco to Denver?

  Generally, when trying to get a below average price for your ticket, try to book around 15 days before departure. For the cheapest possible price, our data suggests booking 33 days before departure.

• Is Southwest the cheapest airline to fly with from San Francisco to Denver?

  With an average price of $277 return, Southwest is not the cheapest airline to fly from San Francisco to Denver with. Instead, for the lowest price, our data suggests flying with Allegiant Air, where a return flight costs $100 on average.

• What is the cheapest Southwest flight from San Francisco to Denver?

  In the last 3 days, the lowest price for a flight with Southwest from San Francisco to Denver was $127 for a return flight and $78 for a one-way flight.

• Does Southwest fly direct to Denver from San Francisco?

  Yes, Southwest does offer direct flights for the route, with around 31 flights per week.

• What’s the cheapest day of the week to fly from San Francisco to Denver with Southwest?

  On average, the cheapest day of the week to fly from San Francisco to Denver with Southwest is Sunday, when prices are around $70. The most expensive day is generally Saturday, where the average price is around $98.

• What’s the cheapest month to fly from San Francisco to Denver with Southwest?

  The cheapest month for Southwest flights to Denver from San Francisco is generally October, where plane tickets cost $139 on average. If possible, try to avoid the most expensive months of March and December, where tickets cost $188 and $209 respectively.