STL - TYS

$124 Find Cheap Flights from St. Louis to Knoxville - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Knoxville departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$229
Typical prices: $267-$481
American Airlines
Fri 9/11Mon 9/14
STL - TYS • 1 stop
Cheapest one-way
$124
Typical prices: $227-$504
Southwest
Mon 10/5
STL - TYS • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Knoxville. You'll need at least 1 connection.
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Top layover airports
Dallas (DFW)
Cheapest • Avg $210 (round-trip)
Atlanta (ATL)
Shortest trip • 4h 08m (one-way)
Insights
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When to travel
August
Cheapest • 24% price drop
August
Most popular
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Knoxville (STL-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Knoxville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Knoxville

Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
10:14 am - 4:42 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
5h 28m1 stop Dallas/Fort Worth
American Airlines Logo
8:15 pm - 12:27 amTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
5h 12m1 stop Chicago O'Hare Intl
$229American Airlines
Sat, Sep 5 - Tue, Sep 8
American Airlines Logo
5:13 pm - 11:22 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
5h 09m1 stop Chicago O'Hare Intl
American Airlines Logo
6:52 pm - 12:14 amTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
6h 22m1 stop Chicago O'Hare Intl
$229American Airlines
Fri, Sep 11 - Mon, Sep 14
Southwest Logo
5:15 am - 12:20 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
6h 05m2 stops Houston Hobby Nashville Intl
Southwest Logo
1:00 pm - 10:30 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
10h 30m1 stop Orlando
$240Southwest
Thu, Oct 15 - Thu, Oct 22
Delta Logo
7:20 pm - 11:59 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
3h 39m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:40 am - 9:09 amTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
4h 29m1 stop Atlanta Hartsfield-Jackson
$247Delta
Thu, Oct 22 - Mon, Oct 26
Delta Logo
12:00 pm - 5:27 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
4h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:23 pm - 11:54 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
6h 31m1 stop Atlanta Hartsfield-Jackson
$247Delta
Mon, Sep 7 - Wed, Sep 9
Southwest Logo
11:40 am - 8:00 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
7h 20m1 stop Baltimore/Washington
Southwest Logo
1:55 pm - 8:45 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
7h 50m1 stop Dallas Love Field
$247Southwest
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
10:44 am - 7:01 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
7h 17m1 stop Washington, D.C. Reagan-National
American Airlines Logo
2:43 pm - 7:07 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
5h 24m1 stop Dallas/Fort Worth
$247American Airlines
Wed, Sep 2 - Wed, Sep 9
Southwest Logo
7:05 am - 2:20 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
6h 15m1 stop Dallas Love Field
Southwest Logo
7:00 am - 3:10 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
9h 10m2 stops Nashville Intl Chicago Midway
$252Southwest
Sun, Sep 20 - Tue, Sep 22
United Airlines Logo
5:30 pm - 10:49 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
4h 19m1 stop Chicago O'Hare Intl
United Airlines Logo
6:00 pm - 10:00 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
5h 00m1 stop Chicago O'Hare Intl
$278United Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
10:35 am - 11:21 pmSTL  Lambert-St Louis-TYS Knoxville McGhee Tyson
11h 46m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale
Multiple Airlines Logo
6:30 am - 7:15 pmTYS  Knoxville McGhee Tyson-STL Lambert-St Louis
13h 45m1 stop Denver Intl
$278Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Knoxville flights

Get data-powered insights and trends into flights from St. Louis to Knoxville to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Knoxville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Knoxville departing in September.

Flight prices are below average for this route right now.

Flights to Knoxville from St. Louis usually cost between $252 and $328 in September.
The lowest price found in the past 5 days was $229 on American Airlines (Sep 5-Sep 8).

What is the cheapest month to fly from St. Louis to Knoxville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Knoxville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Knoxville is August, where tickets cost $278 (return) on average. On the other hand, the most expensive months are June and January, where the average cost of round-trip tickets is $566 and $547 respectively.

Find deals

Good to know

Low season

January

Cheapest flight

$124
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from St. Louis to Knoxville

When to book flights from St. Louis to Knoxville

Are your dates flexible? Find out the best times to travel from St. Louis to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Knoxville

  • What is the cheapest flight from St. Louis to Knoxville?

    In the last 5 days, the lowest price for a flight from St. Louis to Knoxville was $124 for a one-way ticket and $229 for a round-trip.

  • Do I need a passport to fly between St. Louis and Knoxville?

    No, a passport isn't needed to fly from St. Louis to Knoxville. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from St. Louis to Knoxville?

    St. Louis airport is called Lambert-St Louis and the only airport in Knoxville is Knoxville McGhee Tyson.

  • Which aircraft models fly most regularly from St. Louis to Knoxville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Knoxville?

    SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Knoxville, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Knoxville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Knoxville are Southwest and Delta. With an average price for the route of $325 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $356 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from St. Louis to Knoxville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Knoxville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Knoxville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Knoxville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Knoxville with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and TYS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Knoxville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Knoxville from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Knoxville

Information on your arrival and departure airports

St. Louis (STL)
Knoxville (TYS)