Cheap flights from St. Louis to Knoxville (STL - TYS) from $98

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 9/18. 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.
STL — TYS
May 26 — Jun 21

The best prices from Lambert-St Louis to Knoxville McGhee Tyson are usually found in February or December, booked 46 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from St. Louis to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 21, 2024.

Popular in

March

Cheapest in

February

Round-trip from

$302

One-way from

$179
High demand for flights, 16% potential price rise
Best time to find cheap flights, 33% potential price drop
From Lambert-St Louis to Knoxville McGhee Tyson
One-way flight from Lambert-St Louis to Knoxville McGhee Tyson

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

Wednesday is generally a great day to depart. Flying on this day could help you save up to 80%.

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

Find a great deal and save up to 31% by booking at least 47 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Knoxville within the next two weeks, with the cheapest ticket starting at $250.

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

February is one of the best times of the year to fly to Knoxville from St. Louis. Prices for February average $354 per person but you can even find prices for as low as $198. The most expensive prices can be found in the month of March. Opting for a February flight can save you 19% on your journey compared to booking in March

When is the cheapest time to fly from St. Louis to Knoxville (STL - TYS)?

When flying from St. Louis to Knoxville, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 24% versus a flight in the afternoon.

Cheap American Airlines flights from St. Louis to Knoxville

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Knoxville. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.
Take a peek at the cheapest American Airlines flights we've detected traveling from St. Louis to Knoxville. Come back soon if you're not finding the exact deal you're looking for.
Sat 6/225:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Wed 6/265:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/20$210
Sat 7/273:18 pmSTL - TYS
1 stop5h 03mAmerican Airlines
Wed 7/315:10 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/20$219
Wed 10/235:37 amSTL - TYS
1 stop3h 42mAmerican Airlines
Tue 11/54:29 pmTYS - STL
1 stop7h 07mAmerican Airlines
Deal found 5/20$227
Thu 6/205:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Tue 6/255:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/19$265
Fri 7/267:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Tue 7/307:49 pmTYS - STL
1 stop4h 40mAmerican Airlines
Deal found 5/20$267
Fri 6/145:15 amSTL - TYS
1 stop4h 17mAmerican Airlines
Sat 6/155:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/20$280
Sat 6/156:00 amSTL - TYS
1 stop9h 10mAmerican Airlines
Sun 6/165:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/20$396
Sun 6/165:15 amSTL - TYS
1 stop4h 17mAmerican Airlines
Sat 6/225:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/21$440
Sat 7/135:17 amSTL - TYS
1 stop4h 15mAmerican Airlines
Wed 7/1711:14 amTYS - STL
2 stops10h 06mAmerican Airlines
Deal found 5/20$490

Cheap Frontier flights from St. Louis to Knoxville

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and Knoxville. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.
Have a look at some of the cheapest available Frontier flights departing from St. Louis and landing in Knoxville. Deals are refreshing constantly so come back soon for more options.
Mon 6/176:16 pmSTL - TYS
1 stop12h 46mFrontier
Mon 6/2410:41 pmTYS - STL
1 stop17h 06mFrontier
Deal found 5/20$259
Fri 7/265:19 pmSTL - TYS
1 stop26h 44mFrontier
Mon 7/2910:40 pmTYS - STL
1 stop17h 07mFrontier
Deal found 5/20$304
Tue 6/410:44 pmSTL - TYS
1 stop19h 03mFrontier
Thu 6/64:26 pmTYS - STL
1 stop15h 41mFrontier
Deal found 5/20$488
Mon 5/279:20 pmSTL - TYS
1 stop9h 37mFrontier
Fri 5/314:01 pmTYS - STL
1 stop18h 24mFrontier
Deal found 5/20$609
Sun 6/211:22 pmSTL - TYS
1 stop9h 38mFrontier
Wed 6/57:47 pmTYS - STL
1 stop19h 45mFrontier
Deal found 5/20$678

Cheap St. Louis to Knoxville flights in May & June 2024

Find cheap flight options from St. Louis to Knoxville specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,708,702 searches. Prices were last updated on May 21, 2024.
The lowest fares we've come across on flights traveling from St. Louis to Knoxville in May and June 2024. Check back soon for alternative fares.
Sat 6/225:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Wed 6/265:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/20$210
Mon 6/176:16 pmSTL - TYS
1 stop12h 46mFrontier
Mon 6/2410:41 pmTYS - STL
1 stop17h 06mFrontier
Deal found 5/20$259
Thu 6/205:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Tue 6/255:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/19$265
Sun 6/166:55 pmSTL - TYS
2 stops25h 19mMultiple Airlines
Sat 6/227:30 amTYS - STL
1 stop10h 58mMultiple Airlines
Deal found 5/21$277
Fri 6/145:15 amSTL - TYS
1 stop4h 17mAmerican Airlines
Sat 6/155:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/20$280
Thu 6/68:12 pmSTL - TYS
1 stop13h 19mMultiple Airlines
Fri 6/77:10 pmTYS - STL
2 stops17h 55mMultiple Airlines
Deal found 5/20$304
Sun 6/27:30 pmSTL - TYS
1 stop14h 04mMultiple Airlines
Wed 6/59:00 amTYS - STL
3 stops28h 05mMultiple Airlines
Deal found 5/20$305
Fri 6/147:06 pmSTL - TYS
1 stop3h 47mDelta
Sun 6/167:59 pmTYS - STL
1 stop4h 44mDelta
Deal found 5/20$313
Mon 6/1712:15 pmSTL - TYS
2 stops10h 18mMultiple Airlines
Mon 6/247:44 pmTYS - STL
2 stops17h 21mMultiple Airlines
Deal found 5/20$320

St. Louis to Knoxville 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Knoxville in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.
The lowest fares we've come across on flights traveling from St. Louis to Knoxville in May and June 2024. Check back soon for alternative fares.
Sat 8/175:05 pmSTL - TYS
1 stop5h 52mDelta
Wed 8/215:35 amTYS - STL
1 stop6h 12mDelta
Deal found 5/19$198
Sat 6/225:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Wed 6/265:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/20$210
Sat 7/273:18 pmSTL - TYS
1 stop5h 03mAmerican Airlines
Wed 7/315:10 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/20$219
Wed 10/235:37 amSTL - TYS
1 stop3h 42mAmerican Airlines
Tue 11/54:29 pmTYS - STL
1 stop7h 07mAmerican Airlines
Deal found 5/20$227
Mon 6/176:16 pmSTL - TYS
1 stop12h 46mFrontier
Mon 6/2410:41 pmTYS - STL
1 stop17h 06mFrontier
Deal found 5/20$259
Thu 6/205:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Tue 6/255:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 5/19$265
Fri 7/267:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Tue 7/307:49 pmTYS - STL
1 stop4h 40mAmerican Airlines
Deal found 5/20$267
Sun 6/166:55 pmSTL - TYS
2 stops25h 19mMultiple Airlines
Sat 6/227:30 amTYS - STL
1 stop10h 58mMultiple Airlines
Deal found 5/21$277
Fri 6/145:15 amSTL - TYS
1 stop4h 17mAmerican Airlines
Sat 6/155:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 5/20$280

St. Louis to Knoxville flights leaving soon

Find last-minute flight options from St. Louis to Knoxville for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.
Check out these flights departing soon from St. Louis to Knoxville. Users should examine the flight details to ensure there are no surprises.
Tue 5/286:30 pmSTL - TYS
1 stop4h 21mDelta
Sun 6/25:30 amTYS - STL
1 stop4h 24mDelta
Deal found 5/20$442
Tue 5/282:35 pmSTL - TYS
3 stops28h 08mMultiple Airlines
Sun 6/27:30 amTYS - STL
1 stop10h 59mMultiple Airlines
Deal found 5/20$495
Wed 5/2910:15 amSTL - TYS
1 stop5h 42mUnited Airlines
Fri 5/314:37 pmTYS - STL
1 stop21h 09mUnited Airlines
Deal found 5/21$501
Tue 5/282:35 pmSTL - TYS
3 stops28h 08mMultiple Airlines
Sun 6/27:30 amTYS - STL
3 stops29h 35mMultiple Airlines
Deal found 5/20$510
Mon 5/273:55 pmSTL - TYS
3 stops26h 46mMultiple Airlines
Fri 5/316:00 amTYS - STL
3 stops31h 05mMultiple Airlines
Deal found 5/20$526
Mon 5/273:55 pmSTL - TYS
3 stops26h 46mMultiple Airlines
Fri 5/314:18 pmTYS - STL
2 stops19h 10mMultiple Airlines
Deal found 5/20$544
Tue 5/281:01 pmSTL - TYS
2 stops9h 50mAmerican Airlines
Sun 6/26:34 pmTYS - STL
1 stop4h 13mAmerican Airlines
Deal found 5/20$583
Mon 5/279:20 pmSTL - TYS
1 stop9h 37mFrontier
Fri 5/314:01 pmTYS - STL
1 stop18h 24mFrontier
Deal found 5/20$609
Mon 5/276:30 amSTL - TYS
1 stop6h 26mUnited Airlines
Fri 5/317:05 pmTYS - STL
2 stops21h 36mUnited Airlines
Deal found 5/20$672

One-way flights to Knoxville from St. Louis

Search for one-way flight options from St. Louis to Knoxville. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.
Take a look at some of the best available options we've come across on one-way flights from St. Louis to Knoxville. Those seeking round-trip flights from St. Louis to Knoxville should utilize the search form at the the top of the page.
Wed 9/185:37 amSTL - TYS
1 stop3h 42mAmerican Airlines
Deal found 5/21$98
Fri 6/1412:15 pmSTL - TYS
2 stops10h 18mMultiple Airlines
Deal found 5/20$159
Fri 6/149:06 amSTL - TYS
1 stop5h 26mAmerican Airlines
Deal found 5/20$176
Fri 7/265:19 pmSTL - TYS
1 stop26h 44mFrontier
Deal found 5/20$179
Fri 6/216:08 amSTL - TYS
1 stop8h 24mAmerican Airlines
Deal found 5/19$181
Fri 7/2612:15 pmSTL - TYS
2 stops9h 41mMultiple Airlines
Deal found 5/20$183
Fri 6/1412:15 pmSTL - TYS
3 stops22h 19mMultiple Airlines
Deal found 5/20$221
Fri 6/217:45 amSTL - TYS
3 stops27h 42mMultiple Airlines
Deal found 5/19$223
Fri 6/216:11 amSTL - TYS
2 stops11h 49mAmerican Airlines
Deal found 5/19$260

Find flights from St. Louis to Knoxville within your budget

Customize your flight search to find flights from St. Louis to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$198 - $363

Route

Depart

Return

Price

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Sat 8/17

1 stop5h 52m

Knoxville McGhee Tyson

Wed 8/21

1 stop6h 12m

$198

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Sat 6/22

1 stop5h 20m

Knoxville McGhee Tyson

Wed 6/26

1 stop4h 21m

$210

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Wed 7/31

1 stop4h 16m

Knoxville McGhee Tyson

Sun 8/4

1 stop4h 37m

$213

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Sat 7/27

1 stop5h 03m

Knoxville McGhee Tyson

Wed 7/31

1 stop4h 20m

$219

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Wed 10/23

1 stop3h 42m

Knoxville McGhee Tyson

Tue 11/5

1 stop7h 07m

$227

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Mon 6/17

1 stop12h 46m

Knoxville McGhee Tyson

Mon 6/24

1 stop17h 06m

$259

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Sun 6/16

2 stops25h 19m

Knoxville McGhee Tyson

Sat 6/22

1 stop10h 58m

$277

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Fri 7/26

1 stop26h 44m

Knoxville McGhee Tyson

Mon 7/29

1 stop17h 07m

$304

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Sat 6/22

1 stop4h 05m

Knoxville McGhee Tyson

Wed 6/26

2 stops10h 51m

$363

Flights are sorted by cheapest first

Deals found on 5/19

When is the best time to book a flight from St. Louis to Knoxville?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Knoxville. Price data was last updated on May 10, 2024.
The price you pay for your flight from St. Louis to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from St. Louis to Knoxville?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Knoxville. Price data was last updated on May 19, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Knoxville flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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

Have a flexible travel schedule? Discover the best time to fly to Knoxville from St. Louis 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.

Temperature and rainfall in Knoxville by month

Plan your trip to Knoxville by taking into account the average temperature and rainfall totals by month.

TYS

Temperature

39.2 - 78.8 °F

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated May 21, 2024.
To help decide which airline to fly from St. Louis to Knoxville, see what other customers have to say about American Airlines, Frontier and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,595 reviews

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

8.0
Very good
10,595 reviews
8.0
Very good
10,595 reviews

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.4
Good
10,884 reviews
8.0
Very good
10,595 reviews

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

7.3
Good
14,447 reviews
8.0
Very good
10,595 reviews

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

6.3
Okay
4,049 reviews
8.0
Very good
10,595 reviews

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from St. Louis to Knoxville for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Knoxville for under $200. The cheapest flight booked recently is on Delta for just $198, but on average you can expect to pay $281.

  • Are there last-minute flights available from St. Louis to Knoxville for under $500?

    There are currently 12+ open flights from St. Louis to Knoxville within the next 7 days for less than $500.

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

    According to our current data, Delta ($198), American Airlines ($210), and Frontier ($259) offers the cheapest pricing from St. Louis to Knoxville. Delta is priced at 44% lower than the current average price of a flight leaving 3 months from now.

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

  • What does STL to TYS mean?

    Great question - STL to TYS just means Lambert-St Louis Airport to Knoxville McGhee Tyson Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from St. Louis to Knoxville that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Knoxville flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Knoxville with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Knoxville flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from St. Louis to Knoxville that allow pets onboard?

    Many airlines flying from St. Louis to Knoxville offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Knoxville?

    Yes, you can often find last-minute deals on St. Louis to Knoxville flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Knoxville flight deals updated?

    The St. Louis to Knoxville flight deals you see on this page were last updated on 5/21.

  • When is the best time to book a flight from St. Louis to Knoxville?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Knoxville (average of $302). Flying from St. Louis to Knoxville in May is currently the most expensive (average of $377). 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

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

Top 3 airlines flying from St. Louis to Knoxville

Discover the top 3 airlines that operate flights from St. Louis to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,708,702 searches. Data last updated May 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$206Average$350FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$227Average$362FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$288Average$526FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Search flights from St. Louis to Knoxville by cabin class

Find flights from St. Louis to Knoxville, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Knoxville?

Cheapflights helps you search for flights from St. Louis to Knoxville via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Knoxville?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Knoxville.

Can Cheapflights find flights from St. Louis to Knoxville with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Knoxville flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from St. Louis to Knoxville become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.