$104 Cheap United flights from Knoxville to St. Louis (TYS to STL)

Find The Best Day To Fly from Knoxville to St. Louis

Amazing United TYS to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $287 round trip and $104 one way. Prices and availability subject to change. Additional terms may apply.

Sat, May 25 - Tue, Jun 4
TYS
Knoxville
STL
St. Louis
$287 Roundtrip, found 4 days ago
$287
Roundtrip
found 4 days ago
Select United flight, departing Sat, May 25 from Knoxville to St. Louis, returning Tue, Jun 4, priced at $287 found 4 days ago
Sat, May 25 - Thu, May 30
TYS
Knoxville
STL
St. Louis
$306 Roundtrip, found 4 days ago
$306
Roundtrip
found 4 days ago
Select United flight, departing Sat, May 25 from Knoxville to St. Louis, returning Thu, May 30, priced at $306 found 4 days ago
Fri, May 31 - Fri, May 31
TYS
Knoxville
STL
St. Louis
$358 Roundtrip, just found
$358
Roundtrip
just found
Select United flight, departing Fri, May 31 from Knoxville to St. Louis, returning Fri, May 31, priced at $358 just found
Thu, May 30 - Sat, Jun 8
TYS
Knoxville
STL
St. Louis
$441 Roundtrip, just found
$441
Roundtrip
just found
Select United flight, departing Thu, May 30 from Knoxville to St. Louis, returning Sat, Jun 8, priced at $441 just found

Frequently asked questions

Can I catch a flight from McGhee Tyson Airport (TYS) to St. Louis Lambert International Airport right now?
For info on any current Lambert Field quarantine requirements and travel advice, go to our Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught out en route.
What terminal is United Airlines at Knoxville Airport?
As soon as you’re issued your boarding pass for your United Airlines flight from TYS to St. Louis Lambert International Airport, see if the terminal details are listed on it. If not, you might like to contact your carrier. They’ll be able to tell you where you’ll be flying in and out of.
Are there United Airlines non-stop flights from TYS to STL?
There aren’t any nonstop flights with United Airlines from Knoxville Airport to Lambert Field. But think of it this way — you can make the most of this time to stretch out those legs before jumping on your connecting flight.
How long is a United Airlines flight from TYS to STL?
Just 3 hours and 30 minutes is approximately how long you can anticipate being in your seat for if you’re flying with United Airlines from TYS to Lambert Field. That’ll allow you just enough time to finish a couple of chapters of your book or enjoy a quick snooze.
How many direct and indirect flights does United Airlines fly from TYS to STL?
You’ll enjoy lots of flexibility if you want to fly with United Airlines between TYS and STL. At the moment, it operates no fewer than 4 flights per day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to STL, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Knoxville TYS to St. Louis STL 

To find the best deals on flights to Knoxville from St. Louis with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Knoxville TYS to St. Louis STL with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $287 to $441, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Knoxville TYS to St. Louis STL 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Knoxville to St. Louis costs from $104. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to St. Louis STL from  Knoxville TYS with United 

To find a cheap United flight from Knoxville TYS to St. Louis STL, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Knoxville TYS to St. Louis STL 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as May, or if you book a flight with a stopover. 

 

Find nonstop flights from Knoxville TYS to St. Louis STL with United 

If you’re keen to be on St. Louis soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Knoxville TYS to St. Louis STL 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to St. Louis STL from  Knoxville TYS with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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This smoke-free hotel features 2 restaurants, a bar/lounge, and a 24-hour gym. Traveling on business? Take advantage of the 24-hour business center, express ...
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Hilton St. Louis Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.