STL - SLC

$84 Find Cheap Flights from St. Louis to Salt Lake City - Compare and Save

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Everything you should know

Cheapest round-trip
$148
Typical prices: $404-$596
Frontier
Sat 1/6Fri 1/12
STL - SLC • 1 stop
Cheapest non-stop
$509
Typical prices: $439-$622
Delta
Sat 12/1Sat 12/8
STL - SLC • Non-stop
Nonstop flights
You can fly direct with Delta. Average duration is 3h 24m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 9% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $320 (round-trip)
Shortest trip • 5h 36m (one-way)
Insights
Insights
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We hope you love your trip to Salt Lake City!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Salt Lake City

Wed, Jan 6 - Tue, Jan 12
Frontier Logo
6:20 pm - 11:06 pmSTL  Lambert-St Louis-SLC Salt Lake City
5h 46m1 stop Denver Intl
Frontier Logo
4:35 pm - 10:20 amSLC  Salt Lake City-STL Lambert-St Louis
16h 45m1 stop Denver Intl
$148Frontier
Wed, Jan 6 - Tue, Jan 12
Frontier Logo
6:20 pm - 8:03 pmSTL  Lambert-St Louis-SLC Salt Lake City
26h 43m1 stop Denver Intl
Frontier Logo
4:35 pm - 10:20 amSLC  Salt Lake City-STL Lambert-St Louis
16h 45m1 stop Denver Intl
$151Frontier
Mon, Nov 30 - Mon, Dec 7
Multiple Airlines Logo
3:04 pm - 12:35 pmSTL  Lambert-St Louis-SLC Salt Lake City
22h 31m1 stop Denver Intl
Multiple Airlines Logo
6:04 pm - 4:40 pmSLC  Salt Lake City-STL Lambert-St Louis
21h 36m2 stops San Diego Seattle/Tacoma Intl
$308Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
6:04 am - 2:26 pmSTL  Lambert-St Louis-SLC Salt Lake City
9h 22m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
11:03 am - 11:04 amSLC  Salt Lake City-STL Lambert-St Louis
23h 01m1 stop Denver Intl
$323Multiple Airlines
Wed, Dec 2 - Wed, Dec 9
Southwest Logo
6:30 am - 10:20 amSTL  Lambert-St Louis-SLC Salt Lake City
4h 50m1 stop Denver Intl
Southwest Logo
7:25 am - 3:35 pmSLC  Salt Lake City-STL Lambert-St Louis
7h 10m1 stop Dallas Love Field
$399Southwest
Fri, Jan 1 - Mon, Jan 4
Southwest Logo
5:05 am - 10:30 amSTL  Lambert-St Louis-SLC Salt Lake City
6h 25m1 stop Las Vegas Harry Reid Intl
Southwest Logo
5:10 pm - 12:30 amSLC  Salt Lake City-STL Lambert-St Louis
6h 20m1 stop Los Angeles
$399Southwest
Thu, Dec 17 - Thu, Dec 24
Delta Logo
7:08 am - 9:36 amSTL  Lambert-St Louis-SLC Salt Lake City
3h 28mnonstop
Delta Logo
5:20 pm - 9:06 pmSLC  Salt Lake City-STL Lambert-St Louis
2h 46mnonstop
$509Delta
Wed, Dec 23 - Mon, Jan 4
Delta Logo
7:46 pm - 10:09 pmSTL  Lambert-St Louis-SLC Salt Lake City
3h 23mnonstop
Delta Logo
9:25 am - 1:26 pmSLC  Salt Lake City-STL Lambert-St Louis
3h 01mnonstop
$509Delta
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
6:30 am - 5:17 pmSTL  Lambert-St Louis-SLC Salt Lake City
11h 47m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
10:45 am - 8:57 pmSLC  Salt Lake City-STL Lambert-St Louis
9h 12m1 stop Denver Intl
$518United Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
6:30 am - 5:17 pmSTL  Lambert-St Louis-SLC Salt Lake City
11h 47m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
10:45 am - 10:59 pmSLC  Salt Lake City-STL Lambert-St Louis
11h 14m2 stops Denver Intl Chicago O'Hare Intl
$562United Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Salt Lake City flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from St. Louis to Salt Lake City?

Round-trip flights from St. Louis to Salt Lake City typically range from $404 to $596. The lowest price found in the past 5 days was $148, on Frontier.

What's the cheapest day of the week to fly from St. Louis to Salt Lake City?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from St. Louis to Salt Lake City. It’s 8% cheaper than the average day, while Monday is the most expensive, with prices 13% higher.

What’s the cheapest month to fly from St. Louis to Salt Lake City?

•April is the cheapest month to fly from St. Louis to Salt Lake City at $441 round-trip.
•September ($549) and July ($529) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 24% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from St. Louis to Salt Lake City the cheapest?

Flights from St. Louis to Salt Lake City are cheapest 10 weeks before departure. Booking in this window typically costs about 42% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from St. Louis to Salt Lake City

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Harriet Baskas

Harriet Baskas

Expert on SLC

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Key details for St. Louis to Salt Lake City flights

Low season

October

Cheapest flight

$84
Beat the crowds with an average 26% drop in travelers.
The most popular month to fly with an average 30% increase in travelers.
One-way flight from St. Louis to Salt Lake City

When to book flights from St. Louis to Salt Lake City

Are your dates flexible? Find out the best times to travel from St. Louis to Salt Lake City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Salt Lake City flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from St. Louis to Salt Lake City?

    These are the earliest and latest flight times available from St. Louis to Salt Lake City:

    • Earliest: departs at 7:00 am and lands at 10:24 am
    • Latest: departs at 7:46 pm and lands at 11:10 pm.

    The flight takes about 3h 24m.

  • What cabin classes can I book on flights from St. Louis to Salt Lake City?

    Two cabin classes are available on flights from St. Louis to Salt Lake City:

    • Economy Class
    • Premium Economy Class

  • How long is a flight from St. Louis to Salt Lake City?

    A nonstop flight from St. Louis to Salt Lake City takes 3h 24m, covering 1,153 miles.

  • Do I need a passport to fly from St. Louis to Salt Lake City?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a St. Louis to Salt Lake City flight?

    Round-trip flights from St. Louis to Salt Lake City range from $404 to $596, with an average of $483 over the past 12 months. Anything below $404 counts as a good deal.

  • How expensive are last-minute St. Louis to Salt Lake City flights?

    Last-minute fares on this route (booked within two weeks of departure) run 47% above the $483 route average. Book 10 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from St. Louis to Salt Lake City?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $320 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $506 for nonstop.

  • What is the standard checked-bag allowance on flights from St. Louis to Salt Lake City?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from St. Louis to Salt Lake City?

    The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Southwest and Alaska Airlines. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

  • How are flight departures from St. Louis to Salt Lake City spread across the day?

    Morning is the busiest departure period on St. Louis to Salt Lake City flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night flights for 0%.

  • Have flight prices from St. Louis to Salt Lake City changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $148 to $1,157. That means the highest observed fare was about 8x higher than the lowest one.

  • Which airlines offer Wi-Fi on St. Louis to Salt Lake City flights?

    Delta is the only airline on the St. Louis to Salt Lake City route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from St. Louis to Salt Lake City looking right now?

    One-way fares from St. Louis to Salt Lake City are currently lower than usual. Average one-way flight prices are about $223, which is 24% below the typical average for this route.

  • What car rental options are available at Salt Lake City Airport (SLC)?

    Salt Lake City Airport (SLC) hosts 5 major car rental companies, with daily rates averaging $61 for economy cars. Top options include:

    • NU Car
    • Fox
    • Hertz
    • Dollar
    • Thrifty

  • Which airports can I use when flying from St. Louis to Salt Lake City?

    Flights from St. Louis to Salt Lake City usually depart from Lambert-St Louis (STL) and arrive at Salt Lake City (SLC).

  • Which airports do connecting flights from St. Louis to Salt Lake City pass through?

    One-stop flights from St. Louis to Salt Lake City most commonly connect through:

    • Denver Intl (DEN) - 96% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 2% of one-stop connections
    • Minneapolis St Paul (MSP) - 1% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 1% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Salt Lake City?

    Yes. Flexible dates can save you up to 19% on flights from St. Louis to Salt Lake City. Wednesday is the cheapest departure day at $447 round-trip on average, while Monday is the most expensive at $549, a difference of $102.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from St. Louis to Salt Lake City?

    Only Delta operates flights between St. Louis and Salt Lake City.

  • How much time can I save by choosing a different layover airport from St. Louis to Salt Lake City?

    Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 5h 36m, compared with 6h 49m via Denver Intl (DEN) and 7h 40m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between St. Louis and Salt Lake City?

    Salt Lake City is 1 hour behind St. Louis (Mountain Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Salt Lake City?

    Some of the most popular sights in Salt Lake City are Salt Palace Convention Center, Vivint Smart Home Arena and Temple Square. These are among the most viewed places in Salt Lake City on KAYAK.

  • Which airlines offer extra legroom and free seat selection on St. Louis to Salt Lake City flights?

    Among airlines operating St. Louis to Salt Lake City flights:

    • Delta: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on St. Louis to Salt Lake City flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Delta: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking St. Louis to Salt Lake City flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $447, about $102 less than Monday fares (19% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 42% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your St. Louis to Salt Lake City trip for April. Fares historically average $441 round-trip in that month - typically $108 less than the most expensive month, which is September (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Las Vegas Harry Reid Intl Airport (LAS) can be cheaper than flying direct. The cheapest layover option averages $320 round-trip on this route - about $186 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Salt Lake City Airport.

    • DoubleTree by Hilton Hotel Salt Lake City Airport
    • Microtel Inn & Suites by Wyndham Salt Lake City Airport
    • La Quinta Inn & Suites by Wyndham Salt Lake City Airport

Prefer to fly direct from St. Louis to Salt Lake City?

 
Find which airlines fly direct from Lambert-St Louis Airport to Salt Lake City Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Salt Lake City

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Direct returns

Salt Lake City to Lambert-St Louis

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

More options for your flight from St. Louis to Salt Lake City

Complete your trip to Salt Lake City with a hotel stay or car rental