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Cheap flights from St. Louis to Knoxville (STL - TYS) from $99

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
Jun 7 — Jun 141
From?
To?
Fri 6/7
Fri 6/14
1 adult, Economy
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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 June 2, 2024.

Popular in

March

Cheapest in

February

Round-trip from

$302

One-way from

$99
High demand for flights, 17% potential price rise
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Best time to find cheap flights, 32% potential price drop
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From Lambert-St Louis to Knoxville McGhee Tyson
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One-way flight from Lambert-St Louis to Knoxville McGhee Tyson
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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 86%.

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 $351 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 20% on your journey compared to booking in March

What is the cheapest time of day to fly from STL to 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 23% versus a flight at noon.

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 2,807,690 searches. Data last updated June 2, 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 7/135:30 pmSTL - TYS
1 stop5h 42mAmerican Airlines
Tue 7/167:49 pmTYS - STL
1 stop4h 40mAmerican Airlines
Deal found 6/1$213
Thu 8/225:00 amSTL - TYS
1 stop7h 39mAmerican Airlines
Mon 8/265:10 amTYS - STL
1 stop4h 01mAmerican Airlines
Deal found 6/1$218
Mon 6/247:00 amSTL - TYS
1 stop5h 42mAmerican Airlines
Sat 6/295:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 6/1$228
Sat 6/85:27 amSTL - TYS
1 stop7h 15mAmerican Airlines
Mon 6/1011:21 amTYS - STL
1 stop6h 30mAmerican Airlines
Deal found 6/1$246
Fri 6/712:56 pmSTL - TYS
1 stop6h 44mAmerican Airlines
Sun 6/95:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 6/2$255
Thu 7/45:15 amSTL - TYS
1 stop6h 35mAmerican Airlines
Thu 7/112:16 pmTYS - STL
1 stop7h 31mAmerican Airlines
Deal found 6/2$268
Sun 7/217:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Sat 7/275:10 amTYS - STL
1 stop4h 23mAmerican Airlines
Deal found 6/2$283
Wed 7/35:27 pmSTL - TYS
1 stop5h 57mAmerican Airlines
Mon 7/87:49 pmTYS - STL
1 stop5h 05mAmerican Airlines
Deal found 6/2$292
Wed 6/195:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Sat 6/222:32 pmTYS - STL
1 stop5h 45mAmerican Airlines
Deal found 6/1$403

Cheap Delta flights from St. Louis to Knoxville

Explore cheap flight options specifically provided by Delta 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 2,807,690 searches. Data last updated June 2, 2024.
Have a look at some of the cheapest available Delta flights departing from St. Louis and landing in Knoxville. Deals are refreshing constantly so come back soon for more options.
Wed 9/116:00 amSTL - TYS
1 stop4h 11mDelta
Fri 9/1312:16 pmTYS - STL
1 stop4h 58mDelta
Deal found 6/2$208
Thu 10/315:05 pmSTL - TYS
1 stop5h 44mDelta
Sun 11/35:20 amTYS - STL
1 stop6h 23mDelta
Deal found 6/1$438

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

Find cheap flight options from St. Louis to Knoxville specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Prices were last updated on June 2, 2024.
The lowest fares we've come across on flights traveling from St. Louis to Knoxville in June and July 2024. Check back soon for alternative fares.
Mon 6/247:00 amSTL - TYS
1 stop5h 42mAmerican Airlines
Sat 6/295:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 6/1$228
Sat 6/85:27 amSTL - TYS
1 stop7h 15mAmerican Airlines
Mon 6/1011:21 amTYS - STL
1 stop6h 30mAmerican Airlines
Deal found 6/1$246
Fri 6/712:56 pmSTL - TYS
1 stop6h 44mAmerican Airlines
Sun 6/95:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 6/2$255
Thu 6/208:12 pmSTL - TYS
2 stops24h 02mMultiple Airlines
Sat 6/227:30 amTYS - STL
1 stop10h 58mMultiple Airlines
Deal found 6/1$311
Mon 6/242:41 pmSTL - TYS
2 stops25h 41mMultiple Airlines
Sat 6/297:30 amTYS - STL
1 stop10h 58mMultiple Airlines
Deal found 6/1$335
Mon 6/2412:15 pmSTL - TYS
3 stops31h 28mMultiple Airlines
Sat 6/297:30 amTYS - STL
1 stop10h 58mMultiple Airlines
Deal found 6/1$345
Sun 6/3011:10 amSTL - TYS
1 stop7h 25mMultiple Airlines
Sun 7/76:30 amTYS - STL
1 stop11h 02mMultiple Airlines
Deal found 6/2$393
Sat 6/811:34 amSTL - TYS
1 stop10h 08mMultiple Airlines
Sun 6/96:00 amTYS - STL
2 stops12h 11mMultiple Airlines
Deal found 6/2$394
Mon 6/242:41 pmSTL - TYS
2 stops20h 50mMultiple Airlines
Sat 6/295:44 pmTYS - STL
3 stops48h 01mMultiple Airlines
Deal found 6/1$397

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 2,807,690 searches. Data last updated June 2, 2024.
The lowest fares we've come across on flights traveling from St. Louis to Knoxville in June and July 2024. Check back soon for alternative fares.
Wed 9/116:00 amSTL - TYS
1 stop4h 11mDelta
Fri 9/1312:16 pmTYS - STL
1 stop4h 58mDelta
Deal found 6/2$208
Sat 7/135:30 pmSTL - TYS
1 stop5h 42mAmerican Airlines
Tue 7/167:49 pmTYS - STL
1 stop4h 40mAmerican Airlines
Deal found 6/1$213
Thu 8/225:00 amSTL - TYS
1 stop7h 39mAmerican Airlines
Mon 8/265:10 amTYS - STL
1 stop4h 01mAmerican Airlines
Deal found 6/1$218
Mon 6/247:00 amSTL - TYS
1 stop5h 42mAmerican Airlines
Sat 6/295:12 amTYS - STL
1 stop4h 20mAmerican Airlines
Deal found 6/1$228
Fri 12/67:20 amSTL - TYS
1 stop4h 57mAmerican Airlines
Sat 1/117:47 amTYS - STL
1 stop5h 28mAmerican Airlines
Deal found 6/1$237
Fri 12/67:20 amSTL - TYS
1 stop4h 57mAmerican Airlines
Sat 1/114:16 pmTYS - STL
2 stops6h 15mAmerican Airlines
Deal found 6/1$242
Sat 6/85:27 amSTL - TYS
1 stop7h 15mAmerican Airlines
Mon 6/1011:21 amTYS - STL
1 stop6h 30mAmerican Airlines
Deal found 6/1$246
Fri 6/712:56 pmSTL - TYS
1 stop6h 44mAmerican Airlines
Sun 6/95:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 6/2$255
Thu 7/45:15 amSTL - TYS
1 stop6h 35mAmerican Airlines
Thu 7/112:16 pmTYS - STL
1 stop7h 31mAmerican Airlines
Deal found 6/2$268

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 2,807,690 searches. Data last updated June 2, 2024.
Check out these flights departing soon from St. Louis to Knoxville. Users should examine the flight details to ensure there are no surprises.
Sat 6/85:27 amSTL - TYS
1 stop7h 15mAmerican Airlines
Mon 6/1011:21 amTYS - STL
1 stop6h 30mAmerican Airlines
Deal found 6/1$246
Fri 6/712:56 pmSTL - TYS
1 stop6h 44mAmerican Airlines
Sun 6/95:12 amTYS - STL
1 stop4h 21mAmerican Airlines
Deal found 6/2$255
Sat 6/811:34 amSTL - TYS
1 stop10h 08mMultiple Airlines
Sun 6/96:00 amTYS - STL
2 stops12h 11mMultiple Airlines
Deal found 6/2$394
Fri 6/73:07 pmSTL - TYS
2 stops25h 44mMultiple Airlines
Mon 6/106:00 amTYS - STL
3 stops29h 57mMultiple Airlines
Deal found 6/2$518
Fri 6/76:08 amSTL - TYS
2 stops7h 05mAmerican Airlines
Mon 6/107:40 pmTYS - STL
1 stop5h 23mAmerican Airlines
Deal found 6/2$523
Fri 6/77:30 amSTL - TYS
3 stops27h 25mMultiple Airlines
Mon 6/106:00 amTYS - STL
3 stops29h 57mMultiple Airlines
Deal found 6/2$524
Sat 6/812:56 pmSTL - TYS
2 stops10h 02mAmerican Airlines
Sun 6/95:12 amTYS - STL
2 stops8h 04mAmerican Airlines
Deal found 6/2$528
Fri 6/77:45 amSTL - TYS
3 stops27h 10mMultiple Airlines
Sun 6/96:00 amTYS - STL
2 stops12h 11mMultiple Airlines
Deal found 6/2$552
Fri 6/73:07 pmSTL - TYS
2 stops25h 44mMultiple Airlines
Sun 6/96:00 amTYS - STL
2 stops12h 11mMultiple Airlines
Deal found 6/2$557

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 2,807,690 searches. Data last updated June 2, 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 9/186:00 amSTL - TYS
1 stop4h 11mDelta
Deal found 6/2$99
Mon 7/812:15 pmSTL - TYS
2 stops10h 18mMultiple Airlines
Deal found 6/1$123
Tue 7/1610:11 amSTL - TYS
2 stops25h 44mMultiple Airlines
Deal found 6/1$127
Mon 7/87:33 pmSTL - TYS
1 stop11h 29mFrontier
Deal found 6/1$135
Tue 7/23:23 pmSTL - TYS
2 stops20h 32mMultiple Airlines
Deal found 6/2$146
Tue 7/1610:11 amSTL - TYS
3 stops25h 44mMultiple Airlines
Deal found 6/1$149
Sat 6/811:34 amSTL - TYS
1 stop10h 08mMultiple Airlines
Deal found 6/2$165
Mon 7/85:00 pmSTL - TYS
3 stops26h 36mMultiple Airlines
Deal found 6/1$177
Wed 7/1012:15 pmSTL - TYS
3 stops24h 14mMultiple Airlines
Deal found 6/1$195

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 2,807,690 searches. Data last updated June 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$208 - $413

Route

Depart

Return

Price

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Wed 9/11

1 stop4h 11m

Knoxville McGhee Tyson

Fri 9/13

1 stop4h 58m

$208

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Sat 7/13

1 stop5h 42m

Knoxville McGhee Tyson

Tue 7/16

1 stop4h 40m

$213

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Thu 8/22

1 stop7h 39m

Knoxville McGhee Tyson

Mon 8/26

1 stop4h 01m

$218

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Mon 6/24

1 stop5h 42m

Knoxville McGhee Tyson

Sat 6/29

1 stop4h 20m

$228

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Thu 7/4

1 stop6h 35m

Knoxville McGhee Tyson

Thu 7/11

1 stop7h 31m

$268

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Thu 7/4

2 stops20h 31m

Knoxville McGhee Tyson

Thu 7/11

1 stop11h 59m

$270

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Thu 6/20

2 stops24h 02m

Knoxville McGhee Tyson

Sat 6/22

1 stop10h 58m

$311

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Mon 7/22

1 stop11h 29m

Knoxville McGhee Tyson

Fri 7/26

1 stop11h 49m

$328

Lambert-St LouisKnoxville McGhee Tyson

STL - TYS

STLTYS

Lambert-St Louis

Wed 9/11

2 stops11h 34m

Knoxville McGhee Tyson

Fri 9/13

1 stop4h 07m

$413

Flights are sorted by cheapest first

Deals found on 6/2

How far ahead should I 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 31, 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

What is the cheapest day 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 26, 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 June 2, 2024.
To help decide which airline to fly from St. Louis to Knoxville, see what other customers have to say about American Airlines, Delta and Frontier. 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.
Delta
8.0
Very good
10,402 reviews
Check prices

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

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.

Delta
8.0
Very good
10,402 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

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.

United Airlines
7.4
Good
10,755 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

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.

American Airlines
7.3
Good
14,260 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

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.

Frontier
6.2
Okay
3,998 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Comfort

7.9

Entertainment

8.0

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.4

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 $300 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Knoxville for under $300. The cheapest flight booked recently is on Delta for just $208, but on average you can expect to pay $315.

  • Are there last-minute flights available from St. Louis to Knoxville for under $300?

    There are currently 10+ open flights from St. Louis to Knoxville within the next 7 days for less than $300.

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

    According to our current data, Delta ($208), American Airlines ($213), and Frontier ($328) offers the cheapest pricing from St. Louis to Knoxville. Delta is priced at 40% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $99. Users have also found prices from $135 and $260 on Frontier and American Airlines, respectively.

  • 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 6/2.

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

    American Airlines, Delta and United Airlines are the most popular airlines when flying from St. Louis to Knoxville.

  • What is the cheapest month 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 April is currently the most expensive (average of $376). 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

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Alternative routes for St. Louis to Knoxville
See prices for flight routes from nearby airports that may be better suited for you.

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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 2,807,690 searches. Data last updated June 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$205Average$344FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$227Average$347FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$287Average$507FlexibilityNo cancel feeOn-time69%
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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.
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Business Class
Prem Econ Class
Economy Class

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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!

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