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St. Louis

$209+ Cheap flights from Kingsport, TN to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — STL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Kingsport to St. Louis

Keep the following information in mind while searching for Kingsport to St. Louis flight deals. Data was last updated September 17, 2025.

Round-trip from

$314
(American Airlines)

One-way from

$209
(Delta)

Popular in

November

Cheapest in

August

Average price

$428
From Kingsport to Lambert-St Louis
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One-way flight from Kingsport to Lambert-St Louis
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Highest demand for flights based on searches. 18% potential increase in price ($121 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($59 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Kingsport to St. Louis

Cheapest flights from Kingsport to St. Louis
Explore the most affordable flight options available from Kingsport to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:02 pmTRI - STL
1 stop5h 05mAmerican Airlines
Wed 10/86:25 amSTL - TRI
1 stop4h 21mAmerican Airlines
Deal found 9/15$314
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:11 amTRI - STL
1 stop4h 48mDelta
Sat 10/46:01 amSTL - TRI
1 stop5h 36mDelta
Deal found 9/15$319
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3012:27 pmTRI - STL
2 stops9h 05mAmerican Airlines
Sat 10/49:44 amSTL - TRI
1 stop5h 15mAmerican Airlines
Deal found 9/15$324
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:02 pmTRI - STL
1 stop5h 05mAmerican Airlines
Mon 10/135:30 amSTL - TRI
1 stop4h 15mAmerican Airlines
Deal found 9/15$353
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:12 pmTRI - STL
1 stop4h 41mAmerican Airlines
Wed 10/86:00 amSTL - TRI
2 stops10h 00mAmerican Airlines
Deal found 9/15$379
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:04 amTRI - STL
2 stops7h 32mAmerican Airlines
Mon 11/102:17 pmSTL - TRI
2 stops8h 10mAmerican Airlines
Deal found 9/15$449
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:17 pmTRI - STL
1 stop5h 07mDelta
Thu 10/97:05 amSTL - TRI
1 stop4h 38mDelta
Deal found 9/15$489
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:17 pmTRI - STL
1 stop5h 07mDelta
Thu 10/96:00 amSTL - TRI
1 stop5h 43mDelta
Deal found 9/15$519

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kingsport 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 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Kingsport to St. Louis that are best for you.

Fly from

Kingsport

Fly to

St. Louis

Route

Depart

Return

Price

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Thu 10/2

10:56 am-4:05 pm

1 stop6h 09m

Lambert-St Louis

Wed 10/8

7:05 am-12:43 pm

1 stop4h 38m

$314

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 10/3

7:02 pm-11:07 pm

1 stop5h 05m

Lambert-St Louis

Wed 10/8

6:25 am-11:46 am

1 stop4h 21m

$314

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 11/7

7:22 pm-11:07 pm

1 stop4h 45m

Lambert-St Louis

Mon 11/10

3:23 pm-11:27 pm

2 stops7h 04m

$314

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Tue 9/30

6:11 am-9:59 am

1 stop4h 48m

Lambert-St Louis

Sat 10/4

6:01 am-12:37 pm

1 stop5h 36m

$319

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Tue 9/30

12:27 pm-9:53 pm

2 stops10h 26m

Lambert-St Louis

Sat 10/4

7:23 am-4:49 pm

2 stops8h 26m

$329

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 10/3

7:02 pm-11:07 pm

1 stop5h 05m

Lambert-St Louis

Mon 10/13

5:30 am-10:45 am

1 stop4h 15m

$353

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Thu 10/2

8:12 pm-11:53 pm

1 stop4h 41m

Lambert-St Louis

Wed 10/8

6:00 am-5:00 pm

2 stops10h 00m

$379

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Thu 10/2

7:17 pm-11:24 pm

1 stop5h 07m

Lambert-St Louis

Thu 10/9

7:05 am-12:43 pm

1 stop4h 38m

$489

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 10/3

7:17 pm-11:24 pm

1 stop5h 07m

Lambert-St Louis

Thu 10/9

6:00 am-12:43 pm

1 stop5h 43m

$519

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Mon 10/6

7:17 pm-11:41 pm

1 stop5h 24m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 13 results
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Best time to book a flight from Kingsport to St. Louis

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

Cheapflights Insights

Everything you need to know about your flight from Kingsport to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Kingsport to St. Louis (average of $311). Flying from Kingsport to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from K1N to STL?

Find hourly flight availability from Kingsport to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Kingsport to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Use this chart to determine the cheapest time to fly round-trip from Kingsport to St. Louis. Price data was last updated on December 16, 2024.

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

How much does it cost to fly round-trip from Kingsport to St. Louis?

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 September 17, 2025.
Read through reviews of airlines operating flights from Kingsport to St. Louis, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • What airport do you fly into for flights to St. Louis from Kingsport?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to St. Louis from Kingsport. Booking flights from Kingsport to Lambert-St Louis (STL) should be relatively easy as there are 0 daily inbound flights from Kingsport from 3 different airlines.

  • How long is the flight from Kingsport to St. Louis?

    For as low as $314, Delta can have you in St. Louis from Kingsport in 5h 05m. Kingsport and St. Louis are separated by a distance of 463 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Kingsport to St. Louis (average of $311). Flying from Kingsport to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Kingsport to St. Louis

Discover the top 3 airlines that operate flights from Kingsport 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 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$343FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$213Average$288FlexibilityNo cancel feeOn-time69%
DeltaCheapest$228Average$346FlexibilityNo cancel feeOn-timeN/A

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