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$139+ Cheap flights from Knoxville to Buffalo (TYS - BUF)

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — BUF
Mar 22 — Mar 291
Sun 3/22
Sun 3/29
1 adult, Economy
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Cheap flight deals from Knoxville to Buffalo

Cheapest flights from Knoxville to Buffalo
Explore the most affordable flight options available from Knoxville to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2026.

This United Airlines deal was found by Cheapflights users on 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:00 am
TYS
-
BUF
1 stop6h 17m
United Airlines
Tue 3/2410:32 am
BUF
-
TYS
1 stop4h 18m
United Airlines
Deal found 2/17$277
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:25 pm
TYS
-
BUF
2 stops8h 15m
Southwest
Tue 3/244:40 pm
BUF
-
TYS
1 stop4h 30m
Southwest
Deal found 2/17$282
This Southwest deal was found by Cheapflights users on 2/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:50 am
TYS
-
BUF
1 stop3h 50m
Southwest
Thu 3/193:55 pm
BUF
-
TYS
1 stop6h 15m
Southwest
Deal found 2/15$317
This American Airlines deal was found by Cheapflights users on 2/16. 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.
Mon 9/141:10 pm
TYS
-
BUF
1 stop4h 25m
American Airlines
Fri 9/187:56 pm
BUF
-
TYS
1 stop4h 14m
American Airlines
Deal found 2/16$337
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:25 am
TYS
-
BUF
1 stop4h 20m
Southwest
Fri 9/189:40 am
BUF
-
TYS
2 stops7h 30m
Southwest
Deal found 2/16$342
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:15 pm
TYS
-
BUF
1 stop6h 20m
Southwest
Sun 6/76:00 pm
BUF
-
TYS
1 stop4h 25m
Southwest
Deal found 2/18$347
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:10 am
TYS
-
BUF
2 stops11h 15m
Southwest
Sat 8/295:45 am
BUF
-
TYS
2 stops8h 55m
Southwest
Deal found 2/16$353
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:00 am
TYS
-
BUF
1 stop4h 30m
Southwest
Sun 9/2711:30 am
BUF
-
TYS
1 stop10h 15m
Southwest
Deal found 2/18$362

Find flight deals from Knoxville to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Buffalo (BUF). 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 February 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$277
(United Airlines)

One-way from

$139
(Southwest)

Popular in

January

Cheapest in

March

Average price

$353
Provider with most accurate pricing for Knoxville McGhee Tyson-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Buffalo flights.
Search Deals
From Knoxville McGhee Tyson to Buffalo
Search Deals
One-way flight from Knoxville McGhee Tyson to Buffalo
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Buffalo 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 February 20, 2026.
Use the filters below to find and compare flights from Knoxville to Buffalo that are best for you.

Fly from

Knoxville

Fly to

Buffalo

Route

Depart

Return

Price

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Tue 3/17

7:00 am-1:17 pm

1 stop6h 17m

Buffalo

Tue 3/24

10:32 am-2:50 pm

1 stop4h 18m

$277

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Tue 3/17

2:25 pm-10:40 pm

2 stops8h 15m

Buffalo

Tue 3/24

4:40 pm-9:10 pm

1 stop4h 30m

$282

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Tue 3/17

7:50 am-11:40 am

1 stop3h 50m

Buffalo

Thu 3/19

3:55 pm-10:10 pm

1 stop6h 15m

$317

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Sun 3/15

9:43 pm-11:04 am

2 stops13h 21m

Buffalo

Sun 3/22

9:47 pm-6:27 pm

1 stop20h 40m

$380

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Sun 3/15

6:05 am-12:14 pm

1 stop6h 09m

Buffalo

Sun 3/22

5:29 am-10:58 am

1 stop5h 29m

$387

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Sun 4/12

4:31 pm-10:07 am

1 stop17h 36m

Buffalo

Wed 4/15

1:56 pm-3:41 pm

2 stops25h 45m

$389

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Sun 4/12

7:45 am-11:50 am

1 stop4h 05m

Buffalo

Wed 4/15

11:55 am-5:10 pm

1 stop5h 15m

$462

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Fri 3/6

1:20 pm-12:40 am

1 stop11h 20m

Buffalo

Tue 3/10

9:10 am-5:40 pm

2 stops8h 30m

$498

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Wed 2/25

6:05 am-4:52 pm

1 stop10h 47m

Buffalo

Sat 2/28

5:29 am-3:49 pm

1 stop10h 20m

$507

KnoxvilleBuffalo

TYS - BUF

TYSBUF

Knoxville McGhee Tyson

Sat 5/16

7:45 am-11:55 am

1 stop4h 10m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 17 results
1
2

Compare providers for flights from Knoxville to Buffalo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Buffalo in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Buffalo flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Buffalo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Buffalo

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

Cheapflights Insights

Everything you need to know about your flight from Knoxville to Buffalo

What is the cheapest month to book a flight from Knoxville to Buffalo?

Currently, April is the cheapest month in which you can book a flight from Knoxville to Buffalo (average of $159). Flying from Knoxville to Buffalo in January is currently the most expensive (average of $248). 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.

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated February 20, 2026.
Get a feel of what it's like to fly with Delta and American Airlines from Knoxville to Buffalo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,215 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
Delta
7.9
Good
8,215 reviews
Delta
7.9
Good
8,215 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
American Airlines
7.2
Good
11,320 reviews
Delta
7.9
Good
8,215 reviews

Food

7.2

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Related info for your journey

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

  • How long is the flight from Knoxville to Buffalo?

    United Airlines and Southwest can get you from Knoxville to Buffalo in just under 6h 17m. Your travel time can differ by up to 1h 58m. There are 567 mi between Knoxville and Buffalo. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Knoxville to Buffalo round-trip?

    Flying on Delta is currently your cheapest option to Buffalo, with prices starting at $164. Another option worth looking into is American Airlines, starting at $198 round trip. These flights start at 54% lower than the current average price 3 months from now.

  • Can I find deals for flights from Knoxville to Buffalo that include hotel bookings?

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

  • How can I find direct flights from Knoxville to Buffalo?

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

  • Can I find deals for business class flights from Knoxville to Buffalo?

    Yes. Cheapflights offers flight deals from Knoxville to Buffalo 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 Knoxville to Buffalo?

    Currently, April is the cheapest month in which you can book a flight from Knoxville to Buffalo (average of $159). Flying from Knoxville to Buffalo in January is currently the most expensive (average of $248). 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 Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Cheektowaga
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca

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Top 2 airlines flying from Knoxville to Buffalo

Discover the top 2 airlines that operate flights from Knoxville to Buffalo. 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 February 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$164Average$248FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$198Average$302FlexibilityNo cancel feeOn-time71%

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