The cheapest times to fly from SMF to STL are

  • January 1st to February 25th
  • August 6th to November 18th
  • early December

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SMF to STL is late October to early November. Prices can be as high as $1021 for Sunday flights during early to mid May, or as low as $293 for Wednesday flights around late October to early November.


When to Fly to St. Louis

Flying from Sacramento, CA (SMF) to St. Louis, MO (STL) will usually cost between $303 to $596 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October to early November with an average ticket price of $318. Due to high demand the most expensive time to fly is early to mid May, with an average price of $582. Planning your trip to low-cost times can easily save you $264 on economy flights and even more on first-class flights. Generally, any price below $349 can be considered a good price for a round-trip SMF to STL flight.

See below for a graph of average weekly prices for the SMF to STL route. All prices are for round-trip tickets in USD.

SMF to STL Flight Prices

Compared to other flights, the SMF to STL flight is much cheaper than the average and costs much less than the average flight leaving from Sacramento. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $125 (27%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $333. Return trip prices are from the STL to SMF flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SMF to STL can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 3 hour 60 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from SMF to STL? We’ve got answers.

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Alaska, American, Delta, Frontier, Singapore Airlines, Southwest, Sun Country Airlines, United, and potentially more during busy seasons.

How far away is it from St Louis Lambert International Airport to Sacramento International Airport?

The distance between the two airports is roughly 1674 miles or 2694 kilometers.

How long does it take to fly from SMF to STL?

The real-world flight time for a nonstop SMF to STL flight is about 3 hour 60 minutes.

How many flights go between Sacramento, CA and St. Louis, MO?

It depends on the day of the week and the date, but a typical day might have around 65 available flights from SMF to STL.


Airport Location Info


Departing Airport

Origination codeSMF
Origination airport nameSacramento International Airport
CitySacramento, CA
Countrythe United States

Return Airport

Destination codeSTL
Destination airport nameSt Louis Lambert International Airport
CitySt. Louis, MO
Countrythe United States


Late and Early Flight Data

Flights from SMF to STL tend to depart late almost never compared to the average flight. According to our recently updated data, 10% of flights departed 5 or more minutes late, and 10% of flights left 5 or more minutes early. On average you can expect to leave STL heading for SMF about at the time listed on your ticket. This does not significantly impact arrival time, as the average landing time in St. Louis, MO is about 6 minutes early. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • Southwest: on time
  • Some airlines not reporting


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.