Cheap flights from Knoxville to St. Louis (TYS - STL) from $85

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 6/28. 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
Jun 11 — Jun 181

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

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 June 6, 2024.

Popular in

June

Cheapest in

April

Round-trip from

$318

One-way from

$85
High demand for flights, 28% potential price rise
Best time to find cheap flights, 25% 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 44 days early can save you up to 36% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Knoxville to St. Louis for as little as $267 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 $464 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 April. Prices to St. Louis from Knoxville average $341. You can even find prices in April for less than $341, as users have found deals to St. Louis from as low as $214. 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%.

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 35% on your trip compared to booking a flight in the morning.

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

Find cheap flight options from Knoxville to St. Louis specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 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.
Fri 6/2810:32 pmTYS - STL
1 stop11h 57mFrontier
Mon 7/17:29 pmSTL - TYS
1 stop11h 33mFrontier
Deal found 6/6$158
Tue 7/25:25 amTYS - STL
1 stop4h 44mDelta
Tue 7/96:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/6$198
Thu 7/42:32 pmTYS - STL
1 stop5h 11mAmerican Airlines
Thu 7/117:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Deal found 6/6$213
Thu 7/117:56 pmTYS - STL
1 stop4h 43mDelta
Sat 7/135:34 pmSTL - TYS
1 stop3h 40mDelta
Deal found 6/6$228
Thu 6/136:21 amTYS - STL
1 stop6h 55mAmerican Airlines
Thu 6/275:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 6/6$237
Thu 7/46:45 amTYS - STL
2 stops7h 09mAmerican Airlines
Thu 7/117:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Deal found 6/6$242
Thu 6/1312:14 pmTYS - STL
1 stop3h 43mDelta
Tue 6/186:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/5$246
Fri 6/711:42 amTYS - STL
1 stop6h 36mAmerican Airlines
Thu 6/135:15 amSTL - TYS
1 stop4h 17mAmerican Airlines
Deal found 6/6$255
Sat 6/85:25 amTYS - STL
1 stop4h 45mDelta
Sun 6/96:30 amSTL - TYS
1 stop4h 05mDelta
Deal found 6/5$264

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 3,050,429 searches. Data last updated June 6, 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.
Fri 6/2810:32 pmTYS - STL
1 stop11h 57mFrontier
Mon 7/17:29 pmSTL - TYS
1 stop11h 33mFrontier
Deal found 6/6$158
Tue 7/25:25 amTYS - STL
1 stop4h 44mDelta
Tue 7/96:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/6$198
Thu 7/42:32 pmTYS - STL
1 stop5h 11mAmerican Airlines
Thu 7/117:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Deal found 6/6$213
Thu 8/1512:14 pmTYS - STL
1 stop3h 30mDelta
Thu 8/226:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/6$218
Thu 8/812:09 pmTYS - STL
1 stop5h 11mDelta
Sun 8/116:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/6$223
Thu 7/117:56 pmTYS - STL
1 stop4h 43mDelta
Sat 7/135:34 pmSTL - TYS
1 stop3h 40mDelta
Deal found 6/6$228
Thu 6/136:21 amTYS - STL
1 stop6h 55mAmerican Airlines
Thu 6/275:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 6/6$237
Thu 7/46:45 amTYS - STL
2 stops7h 09mAmerican Airlines
Thu 7/117:00 amSTL - TYS
1 stop5h 25mAmerican Airlines
Deal found 6/6$242
Thu 6/1312:14 pmTYS - STL
1 stop3h 43mDelta
Tue 6/186:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/5$246

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 3,050,429 searches. Data last updated June 6, 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 6/136:21 amTYS - STL
1 stop6h 55mAmerican Airlines
Thu 6/275:38 pmSTL - TYS
1 stop5h 20mAmerican Airlines
Deal found 6/6$237
Thu 6/1312:14 pmTYS - STL
1 stop3h 43mDelta
Tue 6/186:00 amSTL - TYS
1 stop4h 19mDelta
Deal found 6/5$246
Thu 6/1312:24 pmTYS - STL
3 stops28h 06mMultiple Airlines
Tue 6/1811:57 amSTL - TYS
3 stops30h 42mMultiple Airlines
Deal found 6/5$354
Thu 6/1312:24 pmTYS - STL
3 stops28h 06mMultiple Airlines
Tue 6/1811:57 amSTL - TYS
2 stops23h 58mMultiple Airlines
Deal found 6/5$373
Thu 6/137:00 amTYS - STL
1 stop6h 13mUnited Airlines
Tue 6/189:05 amSTL - TYS
2 stops13h 23mUnited Airlines
Deal found 6/5$461
Thu 6/136:45 amTYS - STL
2 stops7h 27mAmerican Airlines
Thu 6/275:15 amSTL - TYS
1 stop5h 59mAmerican Airlines
Deal found 6/6$518
Wed 6/129:00 amTYS - STL
3 stops32h 45mMultiple Airlines
Thu 6/138:12 pmSTL - TYS
2 stops24h 02mMultiple Airlines
Deal found 6/5$537
Thu 6/132:24 pmTYS - STL
2 stops23h 17mMultiple Airlines
Tue 6/1811:57 amSTL - TYS
2 stops23h 58mMultiple Airlines
Deal found 6/5$539
Wed 6/1211:02 amTYS - STL
1 stop6h 04mAmerican Airlines
Thu 6/136:00 amSTL - TYS
1 stop4h 14mAmerican Airlines
Deal found 6/5$748

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 3,050,429 searches. Data last updated June 6, 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.
Fri 6/2810:32 pmTYS - STL
1 stop11h 57mFrontier
Deal found 6/5$85
Sat 9/215:20 amTYS - STL
1 stop4h 46mDelta
Deal found 6/6$99
Sat 6/156:21 amTYS - STL
1 stop5h 04mAmerican Airlines
Deal found 6/6$191
Mon 6/1711:21 amTYS - STL
3 stops28h 02mMultiple Airlines
Deal found 6/5$204
Sat 6/157:10 amTYS - STL
2 stops11h 18mMultiple Airlines
Deal found 6/5$234
Fri 6/286:00 amTYS - STL
3 stops33h 50mMultiple Airlines
Deal found 6/5$241
Sat 9/2112:44 pmTYS - STL
2 stops9h 09mAmerican Airlines
Deal found 6/6$260
Sun 6/166:21 amTYS - STL
1 stop6h 55mAmerican Airlines
Deal found 6/5$266
Sat 6/157:10 amTYS - STL
3 stops34h 22mMultiple Airlines
Deal found 6/5$267

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 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$198 - $392

Route

Depart

Return

Price

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Tue 7/2

1 stop4h 44m

Lambert-St Louis

Tue 7/9

1 stop4h 19m

$198

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 7/4

1 stop5h 11m

Lambert-St Louis

Thu 7/11

1 stop5h 25m

$213

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 8/15

1 stop6h 25m

Lambert-St Louis

Thu 8/22

1 stop6h 11m

$218

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 8/8

1 stop5h 11m

Lambert-St Louis

Sun 8/11

1 stop4h 19m

$223

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 7/11

1 stop4h 43m

Lambert-St Louis

Sat 7/13

1 stop3h 40m

$228

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Thu 7/4

2 stops7h 09m

Lambert-St Louis

Thu 7/11

1 stop5h 25m

$242

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Fri 6/28

1 stop7h 40m

Lambert-St Louis

Sun 6/30

2 stops25h 19m

$275

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Fri 6/28

1 stop7h 40m

Lambert-St Louis

Sun 6/30

3 stops31h 59m

$321

Knoxville McGhee TysonLambert-St Louis

TYS - STL

TYSSTL

Knoxville McGhee Tyson

Tue 7/2

2 stops10h 50m

Lambert-St Louis

Tue 7/9

1 stop4h 12m

$392

Flights are sorted by cheapest first

Deals found on 6/6

How far ahead should I 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 May 31, 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 74 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 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 June 2, 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

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.

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

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

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 June 6, 2024.
Peruse reviews from past customers who have flown with United Airlines, American Airlines and Delta 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.
8.0
Very good
10,368 reviews

Entertainment

8.0

Overall

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

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.

8.0
Very good
10,368 reviews
8.0
Very good
10,368 reviews

Entertainment

8.0

Overall

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

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.

7.4
Good
10,696 reviews
8.0
Very good
10,368 reviews

Entertainment

8.0

Overall

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

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.

7.3
Good
14,227 reviews
8.0
Very good
10,368 reviews

Entertainment

8.0

Overall

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

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.

7.0
Good
7,524 reviews
8.0
Very good
10,368 reviews

Entertainment

8.0

Overall

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

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.

6.2
Okay
3,985 reviews
8.0
Very good
10,368 reviews

Entertainment

8.0

Overall

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

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 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 $200 on Cheapflights?

    Yes, there are multiple flights from Knoxville to St. Louis for under $200. The cheapest flight booked recently is on Delta for just $198, but on average you can expect to pay $350.

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

    There are currently 11+ 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 $198. Other airlines that can offer you cheap pricing are American Airlines, from $213, and United Airlines, from $392. These flights start at 41% 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 $85. Users have also found prices from $99 and $191 on Delta and American 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 6/6.

  • 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 $318). Flying from Knoxville to St. Louis in July is currently the most expensive (average of $365). 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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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 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$206Average$293FlexibilityNo cancel feeOn-time71%
DeltaCheapest$230Average$376FlexibilityNo cancel feeOn-timeN/A

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