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$425+ Cheap flights from Kingsport, TN to Seattle (SEA)

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Kingsport to Seattle

Keep the following information in mind while searching for Kingsport to Seattle flight deals. Data was last updated September 15, 2025.

Round-trip from

$476
(Delta)

One-way from

$425
(American Airlines)

Popular in

October

Cheapest in

September

Average price

$468
From Kingsport to Seattle/Tacoma Intl
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One-way flight from Kingsport to Seattle/Tacoma Intl
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($15 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 Seattle

Cheapest flights from Kingsport to Seattle
Explore the most affordable flight options available from Kingsport to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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 11/44:12 pmTRI - SEA
1 stop10h 30mAmerican Airlines
Fri 11/1410:07 pmSEA - TRI
1 stop7h 13mAmerican Airlines
Deal found 9/14$497
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 11/312:03 pmTRI - SEA
1 stop9h 47mAmerican Airlines
Sat 11/810:07 pmSEA - TRI
1 stop7h 10mAmerican Airlines
Deal found 9/13$499
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 10/204:28 pmTRI - SEA
1 stop8h 18mAmerican Airlines
Sun 10/2610:32 amSEA - TRI
1 stop9h 24mAmerican Airlines
Deal found 9/14$507
This Delta deal was found by Cheapflights users on 9/12. 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 - SEA
1 stop8h 53mDelta
Tue 10/79:55 pmSEA - TRI
1 stop8h 27mDelta
Deal found 9/12$535
This American Airlines deal was found by Cheapflights users on 9/12. 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 9/307:11 amTRI - SEA
1 stop8h 01mAmerican Airlines
Tue 10/77:44 amSEA - TRI
2 stops10h 09mAmerican Airlines
Deal found 9/12$540
This Delta deal was found by Cheapflights users on 9/12. 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.
Mon 9/297:17 pmTRI - SEA
1 stop7h 37mDelta
Tue 10/79:55 pmSEA - TRI
1 stop8h 27mDelta
Deal found 9/12$551
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Mon 9/296:22 amTRI - SEA
1 stop7h 57mAmerican Airlines
Tue 10/711:24 pmSEA - TRI
2 stops9h 22mAmerican Airlines
Deal found 9/12$556
This Delta deal was found by Cheapflights users on 9/14. 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 9/267:17 pmTRI - SEA
1 stop7h 37mDelta
Sat 10/49:45 pmSEA - TRI
1 stop8h 59mDelta
Deal found 9/14$575

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kingsport to Seattle 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 15, 2025.
Use the filters below to find and compare flights from Kingsport to Seattle that are best for you.

Fly from

Kingsport

Fly to

Seattle

Route

Depart

Return

Price

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Fri 2/27

10:15 am-2:54 pm

1 stop7h 39m

Seattle/Tacoma Intl

Tue 3/3

3:20 pm-9:35 am

1 stop15h 15m

$476

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Wed 3/4

6:55 am-11:56 am

1 stop8h 01m

Seattle/Tacoma Intl

Wed 3/11

10:40 pm-8:26 am

1 stop6h 46m

$487

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Wed 3/4

10:15 am-5:50 pm

1 stop10h 35m

Seattle/Tacoma Intl

Wed 3/11

6:00 am-6:12 pm

1 stop9h 12m

$487

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Mon 11/3

4:12 pm-9:18 pm

1 stop8h 06m

Seattle/Tacoma Intl

Fri 11/7

12:41 am-2:14 pm

2 stops10h 33m

$504

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Tue 9/30

6:11 am-12:04 pm

1 stop8h 53m

Seattle/Tacoma Intl

Tue 10/7

9:55 pm-9:22 am

1 stop8h 27m

$535

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Sat 9/27

2:50 pm-8:05 pm

1 stop8h 15m

Seattle/Tacoma Intl

Wed 10/1

10:09 am-10:40 pm

1 stop9h 31m

$535

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Tue 9/30

7:11 am-12:12 pm

1 stop8h 01m

Seattle/Tacoma Intl

Tue 10/7

7:44 am-8:53 pm

2 stops10h 09m

$540

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Sat 9/27

7:11 am-12:12 pm

1 stop8h 01m

$425

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Wed 9/24

12:27 pm-6:13 pm

1 stop8h 46m

$425

BlountvilleSeattle

TRI - SEA

TRISEA

Blountville Tri Cities TN/VA

Tue 12/2

6:08 am-11:40 am

1 stop8h 32m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 12 results
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Best time to book a flight from Kingsport to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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 Seattle

What is the cheapest month to book a flight from Kingsport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Kingsport to Seattle (average of $238). Flying from Kingsport to Seattle in June is currently the most expensive (average of $387). 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 SEA?

Find hourly flight availability from Kingsport to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Kingsport to Seattle, 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 Seattle?

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

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Delta and American Airlines from Kingsport to Seattle 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.
Delta
8.0
Very good
7,956 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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
7,956 reviews
Delta
8.0
Very good
7,956 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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
7,956 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

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 Seattle. 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 Seattle from Kingsport?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Kingsport to Seattle. 4 airlines have flights to Seattle/Tacoma Intl from Kingsport on a regular basis. Booking flights from Kingsport to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from Kingsport per day.

  • How long is the flight from Kingsport to Seattle?

    Airlines like Delta and American Airlines fly from Kingsport to Seattle in about 7h 39m. The time it takes to get you to your destination can typically vary by up to 22m. The distance between Kingsport and Seattle is about 2156 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Kingsport to Seattle that include hotel bookings?

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

  • How can I find direct flights from Kingsport to Seattle?

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

  • Can I find deals for business class flights from Kingsport to Seattle?

    Yes. Cheapflights offers flight deals from Kingsport to Seattle 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 Seattle?

    Currently, January is the cheapest month in which you can book a flight from Kingsport to Seattle (average of $238). Flying from Kingsport to Seattle in June is currently the most expensive (average of $387). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Lacey
Renton
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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Alternative routes for Kingsport to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Kingsport to Seattle

Discover the top 4 airlines that operate flights from Kingsport to Seattle. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$178Average$368FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$308Average$580FlexibilityNo cancel feeOn-time71%
DeltaCheapest$327Average$581FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$352Average$604FlexibilityNo cancel feeOn-time69%

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