A city skyline with a prominent arch bridge at sunset.

$129 Cheap Flights from Salt Lake City (SLC) to St. Louis (STL)

View $129 flight on Sat, Sep 12, 2026Opens in a new window

Popular airlines from Salt Lake City International Airport (SLC) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Salt Lake City to St. Louis (SLC-STL)

Prices were available within the past 7 days and start at $129 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Sep 28 - Wed, Sep 30
SLC
Salt Lake City
STL
St. Louis
$258 Roundtrip, found 9 hours ago
$258
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Mon, Sep 28 from Salt Lake City to St. Louis, returning Wed, Sep 30, priced at $258 found 9 hours ago
Frontier Airlines
Sat, Oct 10 - Sat, Oct 17
SLC
Salt Lake City
STL
St. Louis
$268 Roundtrip, found 1 day ago
$268
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 10 from Salt Lake City to St. Louis, returning Sat, Oct 17, priced at $268 found 1 day ago
Frontier Airlines
Fri, Aug 28 - Thu, Sep 10
SLC
Salt Lake City
STL
St. Louis
$271 Roundtrip, found 1 day ago
$271
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Aug 28 from Salt Lake City to St. Louis, returning Thu, Sep 10, priced at $271 found 1 day ago
Frontier Airlines
Thu, Sep 3 - Sun, Sep 6
SLC
Salt Lake City
STL
St. Louis
$278 Roundtrip, found 2 hours ago
$278
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Sep 3 from Salt Lake City to St. Louis, returning Sun, Sep 6, priced at $278 found 2 hours ago
Frontier Airlines
Fri, Aug 28 - Mon, Aug 31
SLC
Salt Lake City
STL
St. Louis
$279 Roundtrip, found 6 hours ago
$279
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Fri, Aug 28 from Salt Lake City to St. Louis, returning Mon, Aug 31, priced at $279 found 6 hours ago
Frontier Airlines
Sat, Oct 10 - Sat, Oct 17
SLC
Salt Lake City
STL
St. Louis
$283 Roundtrip, found 1 day ago
$283
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 10 from Salt Lake City to St. Louis, returning Sat, Oct 17, priced at $283 found 1 day ago
Southwest Airlines
Thu, Sep 10 - Sun, Sep 13
SLC
Salt Lake City
STL
St. Louis
$326 Roundtrip, found 14 hours ago
$326
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Thu, Sep 10 from Salt Lake City to St. Louis, returning Sun, Sep 13, priced at $326 found 14 hours ago
Alaska Airlines
Tue, Sep 29 - Wed, Sep 30
SLC
Salt Lake City
STL
St. Louis
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Sep 29 from Salt Lake City to St. Louis, returning Wed, Sep 30, priced at $333 found 1 day ago
Delta
Sat, Oct 17 - Sun, Oct 18
SLC
Salt Lake City
STL
St. Louis
$449 Roundtrip, found 1 hour ago
$449
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Oct 17 from Salt Lake City to St. Louis, returning Sun, Oct 18, priced at $449 found 1 hour ago
American Airlines
Sun, Sep 6 - Sun, Sep 13
SLC
Salt Lake City
STL
St. Louis
$456 Roundtrip, found 1 day ago
$456
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Sep 6 from Salt Lake City to St. Louis, returning Sun, Sep 13, priced at $456 found 1 day ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $445
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $445

Find the cheapest month to fly from Salt Lake City (SLC) to St. Louis (STL)

January is typically the cheapest month to fly

From $128 - $500 per traveler.

What you need to know for your flight from Salt Lake City Intl. to Lambert-St. Louis Intl.

Salt Lake City (SLC) to St. Louis (STL) at a glance

Travelers can choose from a range of airlines for their journey from Salt Lake City (SLC) to St. Louis (STL) on this domestic short-haul route. Whether you prefer full-service or low-cost carriers, you can compare airfares to St. Louis (STL) to find the option that best suits your budget and schedule. Discover the key details for flights from Salt Lake City International Airport (SLC) to Lambert-St. Louis International Airport (STL) as you plan your visit to explore the iconic sights and neighborhoods of St. Louis.

  • Fastest flight duration: around 2h 45m non-stop
  • Route distance: roughly 1,200 miles (1,930 km)
  • Flights per week: around 15+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $100–$510, depending on seasonality and how far ahead you book

Flights from Salt Lake City International Airport (SLC) to Lambert-St. Louis International Airport (STL)

Based on the latest traveler bookings, here are the top airlines flying from Salt Lake City to St. Louis, commonly selected for non-stop and one-stop flights. Popular layover options include Denver International Airport (DEN) with a 1 hour and 15-minute layover, Harry Reid International Airport (LAS) at around 2 hours, and Sky Harbor International Airport (PHX) with a 1-hour layover. These choices provide you with the flexibility to balance price, total travel time, and cabin class while crafting the ideal itinerary for your trip.

  • Delta: As a comprehensive airline, Delta provides non-stop flights with one-way prices generally falling between $180 and $620. This carrier represents about 46% of the departures on this route, with a total travel duration of 2 hours and 45 minutes.
  • Southwest Airlines: Known for its budget-friendly fares, Southwest Airlines offers both non-stop and one-stop flights. One-way tickets are typically priced from $140 to $440, making up around 24% of the route's departures, with a standard 1-stop travel time of 4 hours and 15 minutes, culminating in a total of approximately 5 hours and 45 minutes.
  • Frontier Airlines: This low-cost option provides one-stop services, with one-way fares usually ranging from $100 to $260. Frontier accounts for about 13% of departures on this route, featuring an in-flight duration of 4 hours and 15 minutes, and a total journey time close to 5 hours and 45 minutes, including layover time.
  • United: Another full-service airline, United offers one-stop flights with fares ranging from $155 to $460 for one-way travel. It comprises roughly 9% of departures on this route, with an in-flight duration of 4 hours and 15 minutes, leading to a total travel time of around 5 hours and 45 minutes, factoring in layover duration.
  • American Airlines: This full-service carrier provides one-stop service with one-way ticket prices typically between $110 and $440. American Airlines accounts for about 6% of the departures on this route, with an in-flight time of 4 hours and 15 minutes, resulting in a total journey of roughly 5 hours and 45 minutes, including any layovers.

Travelers have the option to enhance their journey from Salt Lake City to St. Louis with an upgrade. Delta provides first class and premium economy service on this route for a more comfortable experience.

Best time to fly from Salt Lake City (SLC) to St. Louis (STL)

The most popular months for travelers flying from Salt Lake City to St. Louis are March, April, and July, when peak temperatures in St. Louis reach up to 78.6°F in July. If you prefer quieter travel, consider November, the least busy time to visit with temperatures around 46.2°F and typically the lowest average one-way fare (around $255). Flight availability peaks in July, with approximately 21 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 12 flights per week.

  • Cheapest time to fly: November usually offers good deals with average one-way fare around $255, roughly 9% cheaper than the yearly average.
  • More budget-friendly months to fly: May, April, and June typically offer average one-way fares of around $264.
  • Most flight options: July has the highest number of flights from Salt Lake City to St. Louis, with approximately 21 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January31.6°F (-0.2°C)Average13$310
February34.9°F (1.6°C)Average12$288
March46.4°F (8.0°C)Slightly High16$310
April56.1°F (13.4°C)Slightly High17$263
May66.6°F (19.2°C)Average16$262
June76.1°F (24.5°C)Average18$267
July78.6°F (25.9°C)Slightly High21$295
August77.0°F (25.0°C)Average20$279
September70.9°F (21.6°C)Slightly Low16$282
October58.6°F (14.8°C)Average18$290
November46.2°F (7.9°C)Slightly Low14$255
December37.8°F (3.2°C)Slightly Low15$270

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Salt Lake City (SLC) to St. Louis (STL)

  • Salt Lake City to St. Louis (SLC-SUS): The Spirit of St. Louis Airport (SUS) is located approximately 16 miles from Lambert-St. Louis International Airport (STL).
  • Salt Lake City to St. Louis (SLC-CPS): St. Louis Downtown Airport (CPS) is found about 16 miles from Lambert-St. Louis International Airport (STL).
  • Provo to St. Louis (PVU-STL): Provo Airport (PVU) lies roughly 41 miles away from Salt Lake City International Airport (SLC).

How to find the best prices for flights from Salt Lake City (SLC) to St. Louis (STL)

Getting some of the best deals on flights from Salt Lake City to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Evening departures (6 pm-12 am) often offer lower prices, although morning flights (5 am-12 pm) are the most popular. Additionally, flying on Saturday generally provides cheaper options, while Thursday remains the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Salt Lake City International Airport

St. Louis welcomes travelers from Salt Lake City with a range of transport options based on price, convenience, and proximity. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located just 0.1 miles away on foot, providing easy access to public transportation.

Frequently asked questions

How much does a flight from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $129 and cheap return flights from $258 Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights usually range from $223 to $912, and return flights typically cost between $415 and $1720. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
September is typically the cheapest month to fly from Salt Lake City, UT to St. Louis, MO, with average round-trip fares around $399. This price is about 14% lower than the average for the year, as September often sees a decrease in travel after the summer peak. Other affordable months to fly from Salt Lake City to St. Louis include April and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You can fly direct from SLC to STL on Delta, with around 22 flights per week.
What is the cheapest airline that flies from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Delta is one of the cheapest airlines offering nonstop flights from Salt Lake City (SLC) to St. Louis (STL), with round-trip tickets starting from around $399. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from Salt Lake City, UT (SLC) to St. Louis, MO (STL) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Delta typically offers the lowest fares. WN offers the most daily flights from Salt Lake City to St. Louis, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly from Salt Lake City, UT (SLC) to St. Louis, MO (STL) is typically in September or April, with average return flight prices around $399. September offers mild weather and fewer travelers, while April is a great time to enjoy springtime in both cities. These months strike a balance between cost and a pleasant travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 3 nonstop flights per day from Salt Lake City Intl. (SLC) to Lambert-St. Louis Intl. (STL). For more options, look at flights that include layovers.
What is the earliest flight from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Salt Lake City Intl. (SLC) to Lambert-St. Louis Intl. (STL) usually departs at around 12:15 AM, operated by American Airlines. This seasonal service is available in July, giving you a chance to arrive in St. Louis early. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Salt Lake City International Airport (SLC) to St. Louis (STL) are also in the early morning, from 6am to 9am. About 25% of passengers prefer this time window. Many major carriers, including Southwest Airlines, American Airlines and United Airlines, offer flights during this window. This timing is favored as it helps you arrive in St. Louis with plenty of time to enjoy your day.
How long does it take to fly from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Direct flights from SLC to STL usually take about 2 hours 50 minutes, traveling roughly 1,154 miles. If you opt for a connecting flight, expect to add around 4 hours 40 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
First class seats are offered on the SLC to STL route. First class cabins are available on:

  • United Airlines
  • American Airlines
  • Delta Air Lines

How do I earn miles on a Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Salt Lake City Intl. (SLC)?
If you're planning to travel to St. Louis from Salt Lake City Intl. (SLC), you can fly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like Denver Intl. (DEN), Harry Reid Intl. (LAS), Sky Harbor Intl. (PHX) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Salt Lake City, UT (SLC-Salt Lake City Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Salt Lake City Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$258
Distance
1153 mi
Average flight time
3 hours 51 mins

Book with confidence

Salt Lake City to St. Louis Flights

The cheapest times to fly from Salt Lake City to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Salt Lake City to St. Louis are during the month of September. You can find some of the cheapest flights from Salt Lake City to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Salt Lake City to St. Louis

Sunday is one of the best days to book for cheap flights from Salt Lake City to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Salt Lake City to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Salt Lake City to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $129 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Salt Lake City to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Salt Lake City to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Salt Lake City to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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