What are the cheapest airlines flying from Knoxville to St. Louis round-trip?

Cheapflights users have booked flights from Knoxville to St. Louis round-trip from $119. Other airlines that can offer you cheap pricing are Delta, from $218, and American Airlines, from $228. These flights start at 58% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Knoxville to St. Louis one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as $104. Users have also found prices from $174 and $279 on American Airlines and United Airlines, respectively.

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

Travelers seeking maximum savings on their Knoxville to St. Louis flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Knoxville to St. Louis?

Consider American Airlines, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Knoxville to St. Louis.

What is the cheapest day to fly round-trip from Knoxville to St. Louis?

Saturday flights are found to be more expensive to fly from Knoxville to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

The best pricing can be found in the month of April. Prices to St. Louis from Knoxville average $287. You can even find prices in April for less than $287, as users have found deals to St. Louis from as low as $214. The month of May appears to be one of the more expensive times to travel to St. Louis from Knoxville. Flying in the targeted month can save you up to 38%.

Most accurate provider : When it comes to deals on Knoxville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Knoxville-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Knoxville to St. Louis that include hotel bookings?

Yes. In addition to deals on Knoxville to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Knoxville to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to St. Louis.

Can I find deals for business class flights from Knoxville to St. Louis?

Yes. Cheapflights offers flight deals from Knoxville to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$104+ Flights from Knoxville, Tennessee to St. Louis, Missouri

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Cheap flight deals from Knoxville to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	May
Cheapest in	April
Round-trip from	$119 (Frontier)
One-way from	$104 (Delta)

Provider with most accurate pricing for Knoxville McGhee Tyson-Lambert-St Louis flight deals.

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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Lambert-St Louis flights.

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High demand for flights, 28% potential price rise

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Best time to find cheap flights, 12% potential price drop

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From Knoxville McGhee Tyson to Lambert-St Louis

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One-way flight from Knoxville McGhee Tyson to Lambert-St Louis

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Find flight deals from Knoxville to St. Louis

Cheapest flights from Knoxville to St. Louis
Explore the most affordable flight options available from Knoxville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

Thu 12/125:20 amTYS - STL

1 stop5h 02mDelta

Sat 12/147:15 amSTL - TYS

1 stop5h 04mDelta

Deal found 11/20

$218

Thu 12/199:08 amTYS - STL

1 stop5h 29mAmerican Airlines

Wed 12/255:03 amSTL - TYS

1 stop3h 56mAmerican Airlines

Deal found 11/19

$228

Thu 12/125:45 amTYS - STL

2 stops10h 49mUnited Airlines

Sat 12/1411:05 amSTL - TYS

1 stop7h 57mUnited Airlines

Deal found 11/20

$362

Mon 12/25:44 pmTYS - STL

2 stops23h 42mMultiple Airlines

Thu 12/54:26 pmSTL - TYS

2 stops18h 34mMultiple Airlines

Deal found 11/20

$455

Best flights from Knoxville to St. Louis
Discover carefully curated flight deals from Knoxville to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2024.

Sun 1/124:19 pmTYS - STL

1 stop17h 47mFrontier

Sat 1/187:09 pmSTL - TYS

1 stop19h 10mFrontier

Deal found 11/18

$119

Thu 12/125:20 amTYS - STL

1 stop5h 02mDelta

Sat 12/147:15 amSTL - TYS

1 stop5h 04mDelta

Deal found 11/20

$218

Thu 12/199:08 amTYS - STL

1 stop5h 29mAmerican Airlines

Wed 12/255:03 amSTL - TYS

1 stop3h 56mAmerican Airlines

Deal found 11/19

$228

Thu 12/125:45 amTYS - STL

2 stops10h 49mUnited Airlines

Sat 12/1411:05 amSTL - TYS

1 stop7h 57mUnited Airlines

Deal found 11/20

$362

Mon 12/25:44 pmTYS - STL

2 stops23h 42mMultiple Airlines

Thu 12/54:26 pmSTL - TYS

2 stops18h 34mMultiple Airlines

Deal found 11/20

$455

Last-minute flights from Knoxville to St. Louis
Discover last-minute flight deals from Knoxville to St. Louis. Data last updated November 20, 2024 and is based on user searches.

Wed 11/2711:42 amTYS - STL

1 stop4h 32mAmerican Airlines

Sun 12/15:45 amSTL - TYS

1 stop4h 26mAmerican Airlines

Deal found 11/20

$483

Wed 11/2710:55 amTYS - STL

1 stop4h 30mUnited Airlines

Sun 12/14:43 pmSTL - TYS

2 stops16h 25mUnited Airlines

Deal found 11/20

$1,441

Mon 12/25:44 pmTYS - STL

2 stops23h 42mMultiple Airlines

Thu 12/54:26 pmSTL - TYS

2 stops18h 34mMultiple Airlines

Deal found 11/20

$455

Thu 12/125:20 amTYS - STL

1 stop5h 02mDelta

Sat 12/147:15 amSTL - TYS

1 stop5h 04mDelta

Deal found 11/20

$218

Thu 12/125:45 amTYS - STL

2 stops10h 49mUnited Airlines

Sat 12/1411:05 amSTL - TYS

1 stop7h 57mUnited Airlines

Deal found 11/20

$362

Thu 12/199:08 amTYS - STL

1 stop5h 29mAmerican Airlines

Wed 12/255:03 amSTL - TYS

1 stop3h 56mAmerican Airlines

Deal found 11/19

$228

One-way flights from Knoxville to St. Louis
Search for one-way flight options from Knoxville to St. Louis. Find affordable one-way fares based on user searches. Data last updated November 20, 2024.

Wed 12/182:32 pmTYS - STL

1 stop6h 42mDelta

Deal found 11/18

$104

Wed 12/1810:59 amTYS - STL

2 stops6h 22mAmerican Airlines

Deal found 11/18

$174

Wed 1/1511:00 amTYS - STL

3 stops33h 55mMultiple Airlines

Deal found 11/19

$190

Thu 12/59:25 amTYS - STL

1 stop8h 13mUnited Airlines

Deal found 11/19

$279

Find flights from Knoxville to St. Louis within your budget

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sun 1/12

4:19 pm-9:06 am

1 stop17h 47m

Lambert-St Louis

Sat 1/18

7:09 pm-3:19 pm

1 stop19h 10m

$119

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 12/12

5:20 am-9:22 am

1 stop5h 02m

Lambert-St Louis

Sat 12/14

7:15 am-1:19 pm

1 stop5h 04m

$218

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 12/19

9:08 am-1:37 pm

1 stop5h 29m

Lambert-St Louis

Wed 12/25

5:03 am-9:59 am

1 stop3h 56m

$228

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 12/12

5:45 am-3:34 pm

2 stops10h 49m

Lambert-St Louis

Sat 12/14

11:05 am-8:02 pm

1 stop7h 57m

$362

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Mon 12/2

5:44 pm-4:26 pm

2 stops23h 42m

Lambert-St Louis

Thu 12/5

4:26 pm-12:00 pm

2 stops18h 34m

$455

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Wed 12/18

2:32 pm-8:14 pm

1 stop6h 42m

$104

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Wed 12/18

10:59 am-4:21 pm

2 stops6h 22m

$174

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Wed 1/15

11:00 am-7:55 pm

3 stops33h 55m

$190

KnoxvilleSt. Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 12/5

9:25 am-4:38 pm

1 stop8h 13m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Compare providers for flights from Knoxville to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to St. Louis in November.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Knoxville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Knoxville-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Knoxville with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Knoxville to St. Louis

Get recent, data-driven insights about flights from Knoxville to St. Louis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Knoxville to St. Louis?

Currently, September is the cheapest month in which you can book a flight from Knoxville to St. Louis (average of $308). Flying from Knoxville to St. Louis in March is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TYS to STL?

A simple way to save on the total cost of your ticket is to fly from Knoxville to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 8% on your trip compared to booking a flight in the morning.

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with American Airlines and United Airlines from Knoxville to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,756 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

8,756 reviews

Delta

8.0

Very good

8,756 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

9,171 reviews

Delta

8.0

Very good

8,756 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

8,756 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Frontier

6.1

Okay

3,539 reviews

Delta

8.0

Very good

8,756 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines flying from Knoxville to St. Louis round-trip?
Cheapflights users have booked flights from Knoxville to St. Louis round-trip from $119. Other airlines that can offer you cheap pricing are Delta, from $218, and American Airlines, from $228. These flights start at 58% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Knoxville to St. Louis one-way?
For one-way options, check prices for Delta. According to our data, you can fly for as low as $104. Users have also found prices from $174 and $279 on American Airlines and United Airlines, respectively.
Can I find deals for flights from Knoxville to St. Louis that include hotel bookings?
Yes. In addition to deals on Knoxville to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Knoxville to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to St. Louis.
Can I find deals for business class flights from Knoxville to St. Louis?
Yes. Cheapflights offers flight deals from Knoxville to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Knoxville to St. Louis?
Currently, September is the cheapest month in which you can book a flight from Knoxville to St. Louis (average of $308). Flying from Knoxville to St. Louis in March is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Knoxville to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$212	Average$269	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$213	Average$310	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$240	Average$288	FlexibilityNo cancel fee	On-time69%

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

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Knoxville to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Knoxville to St. Louis

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Round-trip from

One-way from

Find flight deals from Knoxville to St. Louis

Cheapest flights from Knoxville to St. LouisExplore the most affordable flight options available from Knoxville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

Explore the most affordable flight options available from Knoxville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

Find flights from Knoxville to St. Louis within your budget

Compare providers for flights from Knoxville to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to St. Louis in November.

Best time to book a flight from Knoxville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Knoxville with our price prediction graph.

Travel insights for flights from Knoxville to St. Louis

Get recent, data-driven insights about flights from Knoxville to St. Louis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Knoxville to St. Louis?

What is the cheapest time of day to fly from TYS to STL?

Find hourly flight availability from Knoxville to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with American Airlines and United Airlines from Knoxville to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Knoxville to St. Louis round-trip?

What are the cheapest airlines to fly from Knoxville to St. Louis one-way?

Can I find deals for flights from Knoxville to St. Louis that include hotel bookings?

How can I find direct flights from Knoxville to St. Louis?

Can I find deals for business class flights from Knoxville to St. Louis?

What is the cheapest month to book a flight from Knoxville to St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Knoxville to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Knoxville to St. Louis

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Cheapest flights from Knoxville to St. Louis
Explore the most affordable flight options available from Knoxville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.