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TYS - STL

$195 Find cheap flights from Knoxville to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to St. Louis departing on 6/11. 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
0 bags
Thu 6/13
Thu 6/20

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to St. Louis 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 and deals for you by selecting your travel dates.
Choose your dates
6:11 pm - 12:03 amTYS-STL
6h 52m1 stop
5:15 am - 10:32 amSTL-TYS
4h 17m1 stop
$195American Airlines
Find Deal
Tue, Jun 11 - Wed, Jun 12
2:14 pm - 6:41 pmTYS-STL
5h 27m1 stop
6:00 am - 10:11 amSTL-TYS
3h 11m1 stop
$208Delta
Find Deal
Sun, May 26 - Thu, May 30
5:12 am - 8:33 amTYS-STL
4h 21m1 stop
5:17 am - 10:32 amSTL-TYS
4h 15m1 stop
$225American Airlines
Find Deal
Sun, Jun 30 - Sat, Jul 6
11:16 am - 2:22 pmTYS-STL
4h 06m1 stop
6:00 am - 10:11 amSTL-TYS
3h 11m1 stop
$227Delta
Find Deal
Thu, May 23 - Thu, May 30
5:35 am - 8:52 amTYS-STL
4h 17m1 stop
6:00 am - 1:25 pmSTL-TYS
6h 25m1 stop
$228Delta
Find Deal
Thu, Aug 8 - Sun, Aug 11
11:16 am - 3:57 pmTYS-STL
5h 41m1 stop
7:00 am - 1:33 pmSTL-TYS
5h 33m1 stop
$242Delta
Find Deal
Thu, May 23 - Wed, May 29
10:07 pm - 8:20 pmTYS-STL
23h 13m1 stop
5:36 pm - 4:59 pmSTL-TYS
22h 23m1 stop
$369Frontier
Find Deal
Sun, Jun 2 - Fri, Jun 7
10:07 pm - 8:20 pmTYS-STL
23h 13m1 stop
9:10 pm - 8:17 amSTL-TYS
10h 07m1 stop
$438Frontier
Find Deal
Sun, May 26 - Wed, May 29
7:00 am - 4:29 pmTYS-STL
10h 29m2 stops
5:31 pm - 10:36 pmSTL-TYS
4h 05m1 stop
$546United Airlines
Find Deal
Wed, May 29 - Thu, May 30
2:20 pm - 9:44 pmTYS-STL
8h 24m2 stops
5:31 pm - 10:36 pmSTL-TYS
4h 05m1 stop
$670United Airlines
Find Deal
Mon, Jun 10 - Mon, Jun 17

Flights from Knoxville to St. Louis - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Knoxville to St. Louis?

The average price of all flights from Knoxville to St. Louis clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Knoxville to St. Louis, look for departures on Thursdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from St. Louis, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Knoxville to St. Louis, 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 Knoxville to St. Louis is April, where tickets cost $254 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $595 and $456 respectively.

How far in advance should I book a flight from Knoxville to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Knoxville to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Knoxville to St. Louis, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 73 days before departure.

Good to know

Low season

February

High season

November

Cheapest flight

$195
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Knoxville to St. Louis

When to book flights from Knoxville to St. Louis

Are your dates flexible? Find out the best times to travel from Knoxville to St. Louis 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 Knoxville to St. Louis

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

    In the last 3 days, the lowest price for a flight from Knoxville to St. Louis was $195 for a round-trip ticket.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Knoxville to St. Louis are Delta and American Airlines. With an average price for the route of $376 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $299 and an overall rating of 7.3.

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

    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 Knoxville to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Knoxville 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 Knoxville to St. Louis?

    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 St. Louis with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and STL 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 Knoxville to St. Louis?

    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 St. Louis from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Knoxville to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10736 reviews
8.0Entertainment
7.4Food
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Liked - nothing. Disliked - delayed 35+ min sitting on the plane. Caused me to miss my connection in Charlotte. American Airlines is the worst US Air Carrier company with atrocious customer service.

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Last minute flights from Knoxville to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Knoxville to St. Louis that are departing in the next 10 days.
5/17Fri
multi-stopDelta
5h 30mTYS-STL
5/19Sun
multi-stopDelta
3h 11mSTL-TYS
$341
5/18Sat
multi-stopDelta
4h 35mTYS-STL
5/19Sun
multi-stopDelta
3h 11mSTL-TYS
$497
5/18Sat
multi-stopAmerican Airlines
8h 04mTYS-STL
5/19Sun
multi-stopAmerican Airlines
4h 33mSTL-TYS
$575
5/17Fri
multi-stop
38h 31mTYS-STL
5/19Sun
multi-stop
16h 01mSTL-TYS
$623
5/17Fri
multi-stop
27h 58mTYS-STL
5/19Sun
multi-stop
16h 01mSTL-TYS
$633
5/18Sat
multi-stop
23h 29mTYS-STL
5/19Sun
multi-stop
16h 01mSTL-TYS
$654
5/17Fri
multi-stop
33h 51mTYS-STL
5/19Sun
multi-stop
18h 46mSTL-TYS
$682
5/18Sat
multi-stop
23h 29mTYS-STL
5/19Sun
multi-stop
28h 29mSTL-TYS
$726
5/17Fri
multi-stopUnited Airlines
8h 30mTYS-STL
5/19Sun
multi-stopUnited Airlines
4h 53mSTL-TYS
$1,057

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Knoxville - St. Louis Flights

Departure:

Knoxville (undefined)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Knoxville

Cabin classes: