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$301+ Cheap flights from Kingsport, TN to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — STL
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 December 15, 2025.

This Delta deal was found by Cheapflights users on 12/13. 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.
Sun 12/286:49 pmTRI - STL
1 stop5h 53mDelta
Thu 1/17:00 amSTL - TRI
1 stop6h 22mDelta
Deal found 12/13$597
This American Airlines deal was found by Cheapflights users on 12/13. 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.
Sun 12/287:56 amTRI - STL
1 stop6h 18mAmerican Airlines
Thu 1/15:30 amSTL - TRI
2 stops7h 49mAmerican Airlines
Deal found 12/13$602

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$301
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$415
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
Highest demand for flights based on searches. 12% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 15, 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

Fri 1/16

12:07 pm-6:34 pm

1 stop7h 27m

Lambert-St Louis

Tue 1/20

9:25 am-4:01 pm

1 stop5h 36m

$301

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Mon 1/12

5:08 pm-10:33 pm

1 stop6h 25m

Lambert-St Louis

Thu 1/15

5:11 pm-12:13 pm

1 stop18h 02m

$349

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Mon 1/12

10:06 am-3:04 pm

1 stop5h 58m

Lambert-St Louis

Thu 1/15

9:33 am-6:49 pm

2 stops8h 16m

$507

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Sun 12/28

6:49 pm-11:42 pm

1 stop5h 53m

Lambert-St Louis

Thu 1/1

7:00 am-2:22 pm

1 stop6h 22m

$597

BlountvilleSt. Louis

TRI - STL

TRISTL

Blountville Tri Cities TN/VA

Sun 12/28

7:56 am-1:14 pm

1 stop6h 18m

Lambert-St Louis

Thu 1/1

5:30 am-2:19 pm

2 stops7h 49m

$602

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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, April is the cheapest month in which you can book a flight from Kingsport to St. Louis (average of $198). Flying from Kingsport to St. Louis in December is currently the most expensive (average of $265). 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 December 15, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 14% on flights from Kingsport to St. Louis by exploring options for tickets in the morning.

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 Saturday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 15, 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
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.9

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.9

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
7.2
Good
11,052 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.9

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 2 different airlines.

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

    For as low as $301, American Airlines can have you in St. Louis from Kingsport in 7h 27m. 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, April is the cheapest month in which you can book a flight from Kingsport to St. Louis (average of $198). Flying from Kingsport to St. Louis in December is currently the most expensive (average of $265). 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
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Top 2 airlines flying from Kingsport to St. Louis

Discover the top 2 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$198Average$350FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$338FlexibilityNo cancel feeOn-timeN/A

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