Cheap flights from St. Louis to Utah from $67

The cheapest month to fly to Utah from St. Louis is in January. Flight prices, which tend to average around $411, are often lower during this time because this is during the off-season. If you aren’t able to travel to Utah during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $445.

The cheapest day to depart on your flight to Utah is on a Tuesday when prices can be found for as low as $439. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Utah is Monday, with ticket prices averaging around $528.

Our data shows that the cheapest St. Louis to Utah flights are usually those with departure times in the afternoon. Our users have found flights to Utah in the afternoon for as low as $397. Flights to Utah are more costly in the morning, with an average ticket price of $519. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Lambert-St Louis to Salt Lake City for the best Lambert-St Louis - Utah flight prices

You are more likely to see cheaper flights to Utah from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Utah for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Utah from St. Louis for as low as $437 on momondo.

There are 4 cabin classes available to choose from on St. Louis to Utah flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier and United Airlines are the most popular carriers operating from Lambert-St Louis to Utah

Delta, Frontier and Southwest are the top three most popular airlines that fly to Utah from St. Louis according to our data. Delta is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Utah. Keep in mind that there are 5 different airlines that fly to Utah on a routine basis, so you have a few additional options to choose from.

The number of flights available between St. Louis and Utah is 3 per day as of September 2026. The most frequent departure time is 8:00AM, with 66% of daily flights leaving at noon.

As of September 2026, 22 flights take off from St. Louis and land in Utah each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.