Vuelos de United de Knoxville (TYS) a St. Louis (STL) desde $104

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.

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.

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.

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.

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.

For more info about changing your flight to STL, please visit our Customer Service Portal.

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.

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.

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.