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St. Louis

$176+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — STL
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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Cheap 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 March 20, 2026.

This American Airlines deal was found by Cheapflights users on 3/16. 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 3/317:15 am
TRI
-
STL
1 stop7h 01m
American Airlines
Sat 4/44:13 pm
STL
-
TRI
1 stop5h 13m
American Airlines
Deal found 3/16$299
This American Airlines deal was found by Cheapflights users on 3/17. 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 4/175:05 am
TRI
-
STL
1 stop4h 25m
American Airlines
Mon 4/202:12 pm
STL
-
TRI
1 stop6h 45m
American Airlines
Deal found 3/17$309
This American Airlines deal was found by Cheapflights users on 3/17. 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 4/25:30 am
TRI
-
STL
1 stop6h 29m
American Airlines
Mon 4/66:57 pm
STL
-
TRI
1 stop3h 50m
American Airlines
Deal found 3/17$319
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:08 pm
TRI
-
STL
1 stop7h 50m
Multiple Airlines
Sun 4/124:59 pm
STL
-
TRI
1 stop18h 14m
Multiple Airlines
Deal found 3/18$454
This American Airlines deal was found by Cheapflights users on 3/17. 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 4/245:05 am
TRI
-
STL
1 stop4h 25m
American Airlines
Tue 4/285:53 pm
STL
-
TRI
1 stop4h 04m
American Airlines
Deal found 3/17$462

Find 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 March 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$299
(American Airlines)

One-way from

$125
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$463
Provider with most accurate pricing for Blountville Tri Cities TN/VA-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Blountville Tri Cities TN/VA-Lambert-St Louis flights.
Search Deals
From Kingsport to Lambert-St Louis
Search Deals
One-way flight from Kingsport to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 20, 2026.
Use the filters below to find and compare flights from Kingsport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Tue 3/31

7:15 am-1:16 pm

1 stop7h 01m

Lambert-St Louis

Sat 4/4

4:13 pm-10:26 pm

1 stop5h 13m

$299
Quickest round-trip

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 4/17

5:05 am-8:30 am

1 stop4h 25m

Lambert-St Louis

Mon 4/20

2:12 pm-9:57 pm

1 stop6h 45m

$309

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Thu 4/2

5:00 am-8:35 am

1 stop4h 35m

Lambert-St Louis

Mon 4/6

6:00 am-2:21 pm

2 stops7h 21m

$324

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 4/24

7:45 am-4:41 pm

2 stops9h 56m

Lambert-St Louis

Tue 4/28

5:53 pm-10:57 pm

1 stop4h 04m

$467

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 4/10

7:45 am-4:41 pm

2 stops9h 56m

Lambert-St Louis

Sun 4/12

5:51 am-2:30 pm

2 stops7h 39m

$487

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 8/21

6:00 am-12:30 am

1 stop19h 30m

Lambert-St Louis

Tue 8/25

9:16 am-10:20 am

1 stop24h 04m

$710
Cheapest one-way

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Fri 4/24

5:08 pm-6:50 am

2 stops14h 42m

$176

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Mon 3/30

5:08 pm-10:32 am

2 stops18h 24m

$219

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Sun 5/17

9:28 pm-6:36 pm

3 stops22h 08m

$252

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Sat 5/16

5:08 pm-10:59 pm

1 stop6h 51m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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, January is the cheapest month in which you can book a flight from Kingsport to St. Louis (average of $152). Flying from Kingsport to St. Louis in December is currently the most expensive (average of $260). 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.

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 March 20, 2026.
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
7.9
Good
8,303 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,303 reviews
Delta
7.9
Good
8,303 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,480 reviews
Delta
7.9
Good
8,303 reviews

Food

7.2

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 $299, American Airlines can have you in St. Louis from Kingsport in 7h 01m. Kingsport and St. Louis are separated by a distance of 463 mi.

  • 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, January is the cheapest month in which you can book a flight from Kingsport to St. Louis (average of $152). Flying from Kingsport to St. Louis in December is currently the most expensive (average of $260). 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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
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 March 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$152Average$338FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$162Average$355FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$308FlexibilityNo cancel feeOn-time69%

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