Cheap flights from Sacramento to St. Louis from $105

In general, January is the cheapest month to fly from Sacramento to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $377. The month of August is another great option to travel to St. Louis, with average flight prices from Sacramento averaging around $396.

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $460. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $591. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

Flying to St. Louis from Sacramento at noon is the least expensive time of day to depart. momondo users have found prices as low as $399 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $891 per ticket.

Fly from Sacramento Intl to Lambert-St Louis for the best Sacramento Intl - Lambert-St Louis flight prices

You are more likely to see cheaper flights to St. Louis from Sacramento when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $461 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Sacramento for as low as $313 on momondo.

You could potentially save up to 45% on your flight if you consider stops on a Sacramento to St. Louis flight.

As of May 2026, prices for Sacramento to St. Louis flights are approximately 17% more expensive when compared to flights at the same time last year.

Delta is the most popular carrier operating from Sacramento Intl to Lambert-St Louis

Southwest, United Airlines and Frontier are the top three most popular airlines that fly to St. Louis from Sacramento according to our data. Southwest is the first choice among our users, with 38% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

Salt Lake City (SLC) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $387.

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 5h 11m.

Denver (DEN) has the shortest average layover time for this route: 0h 58m.