Cheap flights from Knoxville to St. Louis (TYS - STL) from $55

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 5/16. 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.
TYS — STL
Apr 23 — Apr 301

The best prices from Knoxville McGhee Tyson to Lambert-St Louis are usually found in November or August, booked 76 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Knoxville to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to St. Louis (STL). 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 April 18, 2024.

Popular in

June

Cheapest in

November

Round-trip from

$323

One-way from

$140
High demand for flights, 28% potential price rise
Best time to find cheap flights, 29% potential price drop
From Knoxville McGhee Tyson to Lambert-St Louis
One-way flight from Knoxville McGhee Tyson to Lambert-St Louis

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

Sunday 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.

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

Users have found that booking a flight from Knoxville to St. Louis at least 28 days early can save you up to 101% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from Knoxville to St. Louis for as little as $451 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $558 for flights departing within the next 3 days.

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

The best pricing can be found in the month of November. Prices to St. Louis from Knoxville average $429. You can even find prices in November for less than $429, as users have found deals to St. Louis from as low as $254. The month of June 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%.

When is the cheapest time to fly from Knoxville to St. Louis (TYS - 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 36% on your trip compared to booking a flight in the morning.

Cheap Frontier flights from Knoxville to St. Louis

Explore cheap flight options specifically provided by Frontier for the route between Knoxville and St. Louis. 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 3,192,047 searches. Data last updated April 18, 2024.
Find some of the cheapest Frontier flights traveling from Knoxville to St. Louis. Deals update often to give you more flight options matching your criteria
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Wed 5/89:53 pmSTL - TYS
1 stop8h 30mFrontier
Deal found 4/16$97
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Wed 5/89:53 pmSTL - TYS
1 stop8h 30mFrontier
Deal found 4/16$100
Thu 5/239:55 pmTYS - STL
1 stop10h 13mFrontier
Sat 5/255:56 pmSTL - TYS
1 stop13h 06mFrontier
Deal found 4/16$227
Fri 5/179:02 pmTYS - STL
1 stop13h 23mFrontier
Fri 5/248:45 pmSTL - TYS
1 stop18h 23mFrontier
Deal found 4/17$258
Fri 5/179:02 pmTYS - STL
1 stop13h 23mFrontier
Fri 5/248:45 pmSTL - TYS
1 stop18h 23mFrontier
Deal found 4/17$263
Fri 5/248:43 pmTYS - STL
1 stop13h 42mFrontier
Mon 5/279:20 pmSTL - TYS
1 stop9h 37mFrontier
Deal found 4/18$302
Mon 5/206:38 pmTYS - STL
1 stop19h 31mFrontier
Fri 5/248:45 pmSTL - TYS
1 stop18h 23mFrontier
Deal found 4/17$327
Mon 5/206:38 pmTYS - STL
2 stops16h 35mFrontier
Fri 5/248:45 pmSTL - TYS
1 stop18h 23mFrontier
Deal found 4/17$332
Sun 7/2810:18 pmTYS - STL
1 stop23h 02mFrontier
Fri 8/28:00 pmSTL - TYS
1 stop19h 50mFrontier
Deal found 4/18$341

Cheap American Airlines flights from Knoxville to St. Louis

Explore cheap flight options specifically provided by American Airlines for the route between Knoxville and St. Louis. 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 3,192,047 searches. Data last updated April 18, 2024.
Some of the lowest-priced American Airlines flights we've found at this time heading from Knoxville to St. Louis. Deals frequently update to provide users with more options.
Mon 7/17:40 pmTYS - STL
1 stop5h 23mAmerican Airlines
Thu 7/45:15 amSTL - TYS
1 stop6h 35mAmerican Airlines
Deal found 4/17$229
Mon 5/65:30 amTYS - STL
1 stop6h 07mAmerican Airlines
Mon 5/135:04 amSTL - TYS
1 stop4h 33mAmerican Airlines
Deal found 4/17$231
Thu 5/212:40 pmTYS - STL
1 stop6h 22mAmerican Airlines
Mon 5/65:04 amSTL - TYS
1 stop4h 33mAmerican Airlines
Deal found 4/17$235
Thu 4/256:24 pmTYS - STL
1 stop5h 18mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop5h 55mAmerican Airlines
Deal found 4/18$243
Wed 5/112:40 pmTYS - STL
1 stop6h 22mAmerican Airlines
Sun 5/55:15 amSTL - TYS
1 stop5h 55mAmerican Airlines
Deal found 4/17$260
Fri 4/2612:40 pmTYS - STL
1 stop6h 22mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop4h 29mAmerican Airlines
Deal found 4/17$265
Thu 4/255:19 amTYS - STL
1 stop5h 54mAmerican Airlines
Sun 4/287:01 amSTL - TYS
1 stop5h 24mAmerican Airlines
Deal found 4/17$266
Tue 5/75:19 amTYS - STL
1 stop5h 34mAmerican Airlines
Wed 5/85:04 amSTL - TYS
1 stop6h 04mAmerican Airlines
Deal found 4/17$410
Fri 5/247:53 pmTYS - STL
1 stop4h 29mAmerican Airlines
Mon 5/275:55 amSTL - TYS
2 stops7h 18mAmerican Airlines
Deal found 4/18$480

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

Find cheap flight options from Knoxville to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,192,047 searches. Prices were last updated on April 18, 2024.
These are some of the most attractive deals on flights from Knoxville to St. Louis in 2024. Check back in a little while for more flight options.
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Wed 5/89:53 pmSTL - TYS
1 stop8h 30mFrontier
Deal found 4/16$97
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Wed 5/89:53 pmSTL - TYS
1 stop8h 30mFrontier
Deal found 4/16$100
Thu 5/239:55 pmTYS - STL
1 stop10h 13mFrontier
Sat 5/255:56 pmSTL - TYS
1 stop13h 06mFrontier
Deal found 4/16$227
Mon 5/65:30 amTYS - STL
1 stop6h 07mAmerican Airlines
Mon 5/135:04 amSTL - TYS
1 stop4h 33mAmerican Airlines
Deal found 4/17$231
Thu 5/212:40 pmTYS - STL
1 stop6h 22mAmerican Airlines
Mon 5/65:04 amSTL - TYS
1 stop4h 33mAmerican Airlines
Deal found 4/17$235
Thu 4/256:24 pmTYS - STL
1 stop5h 18mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop5h 55mAmerican Airlines
Deal found 4/18$243
Fri 5/316:00 amTYS - STL
1 stop7h 28mMultiple Airlines
Sun 6/27:44 pmSTL - TYS
1 stop13h 50mMultiple Airlines
Deal found 4/17$249
Sat 4/2012:40 pmTYS - STL
1 stop4h 09mAmerican Airlines
Sat 4/277:10 amSTL - TYS
1 stop4h 00mAmerican Airlines
Deal found 4/18$252
Fri 5/179:02 pmTYS - STL
1 stop13h 23mFrontier
Fri 5/248:45 pmSTL - TYS
1 stop18h 23mFrontier
Deal found 4/17$258

Knoxville to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Knoxville and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 18, 2024.
These are some of the most attractive deals on flights from Knoxville to St. Louis in 2024. Check back in a little while for more flight options.
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Wed 5/89:53 pmSTL - TYS
1 stop8h 30mFrontier
Deal found 4/16$97
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Wed 5/89:53 pmSTL - TYS
1 stop8h 30mFrontier
Deal found 4/16$100
Thu 5/239:55 pmTYS - STL
1 stop10h 13mFrontier
Sat 5/255:56 pmSTL - TYS
1 stop13h 06mFrontier
Deal found 4/16$227
Mon 7/17:40 pmTYS - STL
1 stop5h 23mAmerican Airlines
Thu 7/45:15 amSTL - TYS
1 stop6h 35mAmerican Airlines
Deal found 4/17$229
Mon 5/65:30 amTYS - STL
1 stop6h 07mAmerican Airlines
Mon 5/135:04 amSTL - TYS
1 stop4h 33mAmerican Airlines
Deal found 4/17$231
Thu 5/212:40 pmTYS - STL
1 stop6h 22mAmerican Airlines
Mon 5/65:04 amSTL - TYS
1 stop4h 33mAmerican Airlines
Deal found 4/17$235
Thu 4/256:24 pmTYS - STL
1 stop5h 18mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop5h 55mAmerican Airlines
Deal found 4/18$243
Fri 5/316:00 amTYS - STL
1 stop7h 28mMultiple Airlines
Sun 6/27:44 pmSTL - TYS
1 stop13h 50mMultiple Airlines
Deal found 4/17$249
Sat 4/2012:40 pmTYS - STL
1 stop4h 09mAmerican Airlines
Sat 4/277:10 amSTL - TYS
1 stop4h 00mAmerican Airlines
Deal found 4/18$252

Knoxville to St. Louis flights leaving soon

Find last-minute flight options from Knoxville to St. Louis 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 3,192,047 searches. Data last updated April 18, 2024.
Have a look at some of the flights available from Knoxville to St. Louis departing last-minute. Users should be sure to double check the price, date, and time of their last-minute flight.
Thu 4/256:24 pmTYS - STL
1 stop5h 18mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop5h 55mAmerican Airlines
Deal found 4/18$243
Fri 4/2612:40 pmTYS - STL
1 stop6h 22mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop4h 29mAmerican Airlines
Deal found 4/17$265
Thu 4/255:19 amTYS - STL
1 stop5h 54mAmerican Airlines
Sun 4/287:01 amSTL - TYS
1 stop5h 24mAmerican Airlines
Deal found 4/17$266
Fri 4/267:00 amTYS - STL
1 stop4h 14mUnited Airlines
Sun 4/288:47 amSTL - TYS
2 stops13h 18mUnited Airlines
Deal found 4/17$482
Fri 4/267:00 amTYS - STL
1 stop4h 14mUnited Airlines
Sun 4/286:00 amSTL - TYS
2 stops12h 24mUnited Airlines
Deal found 4/18$491
Thu 4/255:19 amTYS - STL
2 stops7h 12mAmerican Airlines
Sun 4/287:10 amSTL - TYS
1 stop4h 00mAmerican Airlines
Deal found 4/17$600
Thu 4/255:19 amTYS - STL
2 stops7h 12mAmerican Airlines
Sun 4/285:15 amSTL - TYS
1 stop5h 55mAmerican Airlines
Deal found 4/18$620
Thu 4/257:13 amTYS - STL
2 stops9h 33mUnited Airlines
Sun 4/2811:10 amSTL - TYS
2 stops7h 14mUnited Airlines
Deal found 4/17$990

One-way flights to St. Louis from Knoxville

Search for one-way flight options from Knoxville to St. Louis. 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 3,192,047 searches. Data last updated April 18, 2024.
If you're seeking multiple options on one-way flights from Knoxville to St. Louis, be sure to check out these deals, which are updated often. For those needing a return trip from Knoxville, there is a search form available above.
Thu 5/169:55 pmTYS - STL
1 stop10h 13mFrontier
Deal found 4/17$55
Sat 5/410:58 amTYS - STL
1 stop28h 31mFrontier
Deal found 4/17$59
Fri 5/179:02 pmTYS - STL
1 stop13h 23mFrontier
Deal found 4/17$65
Wed 5/157:53 pmTYS - STL
1 stop4h 29mAmerican Airlines
Deal found 4/17$103
Sun 5/1910:07 pmTYS - STL
1 stop23h 19mFrontier
Deal found 4/17$132
Fri 4/2610:56 amTYS - STL
1 stop23h 51mFrontier
Deal found 4/16$140
Fri 4/266:02 pmTYS - STL
2 stops17h 38mMultiple Airlines
Deal found 4/16$180
Sun 5/197:30 amTYS - STL
2 stops27h 43mMultiple Airlines
Deal found 4/17$220
Fri 5/177:30 amTYS - STL
2 stops27h 58mMultiple Airlines
Deal found 4/17$224

Find flights from Knoxville to St. Louis within your budget

Customize your flight search to find flights from Knoxville to St. Louis 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 3,192,047 searches. Data last updated April 18, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$97 - $547

Route

Depart

Return

Price

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 5/4

1 stop28h 31m

Lambert-St Louis

Wed 5/8

1 stop8h 30m

$97

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 5/4

1 stop28h 31m

Lambert-St Louis

Wed 5/8

1 stop8h 30m

$100

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 5/23

1 stop10h 13m

Lambert-St Louis

Sat 5/25

1 stop13h 06m

$227

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Mon 7/1

1 stop5h 23m

Lambert-St Louis

Thu 7/4

1 stop6h 35m

$229

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Mon 5/6

1 stop6h 07m

Lambert-St Louis

Mon 5/13

1 stop4h 33m

$231

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 5/2

1 stop6h 22m

Lambert-St Louis

Mon 5/6

1 stop4h 33m

$235

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Fri 5/31

1 stop7h 28m

Lambert-St Louis

Sun 6/2

1 stop13h 50m

$249

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Sat 5/18

1 stop4h 35m

Lambert-St Louis

Tue 5/21

1 stop5h 23m

$323

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Tue 5/7

2 stops13h 19m

Lambert-St Louis

Wed 5/8

1 stop4h 40m

$547

Flights are sorted by cheapest first

Deals found on 4/16

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

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to St. Louis. Price data was last updated on January 28, 2024.
The price you pay for your flight from Knoxville to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 73 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 Knoxville to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to St. Louis. Price data was last updated on April 14, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
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.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Knoxville to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Knoxville to St. Louis is currently $131 while a round-trip flight costs $249. Price data was last updated on April 14, 2024.

Currently, October is the cheapest month in which you can book a flight from Knoxville to St. Louis (average of $323). Flying from Knoxville to St. Louis in July 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.

January

$326

February

$331

March

$357

April

$339

May

$352

June

$374

July

$376

August

$336

September

$324

October

$323

November

$336

December

$326

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated April 18, 2024.
Peruse reviews from past customers who have flown with Frontier, 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.
8.1
Very good
11,104 reviews

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

8.1
Very good
11,104 reviews
8.1
Very good
11,104 reviews

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.4
Good
11,341 reviews
8.1
Very good
11,104 reviews

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.3
Good
14,963 reviews
8.1
Very good
11,104 reviews

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

6.3
Okay
4,168 reviews
8.1
Very good
11,104 reviews

Entertainment

8.0

Comfort

7.9

Crew

8.6

Food

7.5

Boarding

8.2

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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.
  • Can I find flights from Knoxville to St. Louis for under $100 on Cheapflights?

    Yes, there are multiple flights from Knoxville to St. Louis for under $100. The cheapest flight booked recently is on Frontier for just $97, but on average you can expect to pay $298.

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

    There are currently 8+ open flights from Knoxville to St. Louis within the next 7 days for less than $300.

  • 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 $97. Other airlines that can offer you cheap pricing are American Airlines, from $229, and Delta, from $323. These flights start at 77% 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 Frontier. According to our data, you can fly for as low as $55. Users have also found prices from $103 and $294 on American Airlines and United Airlines, respectively.

  • What does TYS to STL mean?

    This is defined as Knoxville McGhee Tyson Airport (TYS) and Lambert-St Louis Airport (STL). Codes like Lambert-St Louis Airport are often used to just call airports uniquely.

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

    The amount of baggage you can bring on your Knoxville to St. Louis 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 Knoxville to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Knoxville to St. Louis 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 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.

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

    Many airlines flying from Knoxville to St. Louis 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 Knoxville to St. Louis?

    Yes, you can often find last-minute deals on Knoxville to St. Louis 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 Knoxville to St. Louis flight deals updated?

    The Knoxville to St. Louis flight deals you see on this page were last updated on 4/18.

See more FAQs

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Top 2 airlines flying from Knoxville to St. Louis

Discover the top 2 airlines that operate flights from Knoxville to St. Louis. 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 3,192,047 searches. Data last updated April 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$206Average$300FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$232Average$376FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Search flights from Knoxville to St. Louis by cabin class

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

Fly with Cheapflights

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

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

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

Need flexible booking options for your flight to St. Louis from Knoxville? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

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