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Niagara Falls

$219+ Cheap flights from Knoxville (TYS) to Niagara Falls, ON, Canada

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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — YYZ
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Knoxville to Niagara Falls

Cheapest flights from Knoxville to Niagara Falls
Explore the most affordable flight options available from Knoxville to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Sat 12/1312:53 pmTYS - YYZ
1 stop10h 27mMultiple Airlines
Tue 12/167:10 amYYZ - TYS
2 stops49h 08mMultiple Airlines
Deal found 12/3$484
This American Airlines deal was found by Cheapflights users on 12/3. 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 12/285:42 amTYS - YYZ
1 stop4h 34mAmerican Airlines
Tue 12/3012:34 pmYYZ - TYS
1 stop8h 09mAmerican Airlines
Deal found 12/3$719
This FlightHub deal was found by Cheapflights users on 12/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:39 amTYS - YYZ
1 stop3h 40mWestJet
Tue 12/3010:15 pmYYZ - TYS
2 stops36h 16mWestJet
Deal found 12/3$1,016

Find flight deals from Knoxville to Niagara Falls

Keep the following information in mind while searching for Knoxville to Niagara Falls flight deals. Data was last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$303
(Kiwi.com)

One-way from

$219
(American Airlines)

Popular in

August

Cheapest in

March

Average price

$635
Provider with most accurate pricing for Knoxville McGhee Tyson-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Toronto (YTO) flights.
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From Knoxville McGhee Tyson to Niagara Falls
Search Deals
One-way flight from Knoxville McGhee Tyson to Niagara Falls
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Highest demand for flights based on searches. 23% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Niagara Falls 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 4, 2025.
Use the filters below to find and compare flights from Knoxville to Niagara Falls that are best for you.

Fly from

Knoxville

Fly to

Niagara Falls

Route

Depart

Return

Price

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Sat 1/17

11:59 am-11:20 pm

1 stop11h 21m

Toronto Pearson Intl

Sat 1/24

3:40 pm-8:39 am

1 stop16h 59m

$303

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Wed 1/7

6:00 am-4:35 pm

1 stop10h 35m

Toronto Pearson Intl

Sun 1/11

10:59 am-9:44 pm

1 stop10h 45m

$465

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Fri 1/23

9:30 am-6:57 pm

1 stop9h 27m

Toronto Pearson Intl

Sun 1/25

2:15 pm-10:57 am

1 stop20h 42m

$535

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Fri 1/23

1:36 pm-4:35 pm

1 stop26h 59m

Toronto Pearson Intl

Sun 1/25

5:15 pm-3:56 pm

1 stop22h 41m

$556

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Sun 12/28

5:42 am-10:16 am

1 stop4h 34m

Toronto Pearson Intl

Tue 12/30

12:34 pm-8:43 pm

1 stop8h 09m

$719

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Sat 1/31

7:54 am-4:03 pm

1 stop8h 09m

$219

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Sat 1/31

8:30 am-2:53 pm

3 stops54h 23m

$244

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Mon 12/29

5:46 pm-11:20 pm

2 stops29h 34m

$259

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Wed 12/31

11:21 am-9:26 pm

1 stop10h 05m

$266

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Thu 1/1

7:15 am-8:52 pm

2 stops13h 37m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 13 results
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Best time to book a flight from Knoxville to Niagara Falls

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

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

Currently, April is the cheapest month in which you can book a flight from Knoxville to Niagara Falls (average of $158). Flying from Knoxville to Niagara Falls in August is currently the most expensive (average of $815). 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 TYS to NI4?

Find hourly flight availability from Knoxville to Niagara Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

A simple way to save on the total cost of your ticket is to fly from Knoxville to Niagara Falls in the evening. If you’re flexible enough to do this you can expect to save up to 35% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Niagara Falls

Get insights into the airlines that provide service to Niagara Falls. 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 Niagara Falls. Reviews last updated December 4, 2025.
Read through reviews of airlines operating flights from Knoxville to Niagara Falls, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,047 reviews
United Airlines
7.4
Good
9,066 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Niagara Falls. 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 from for flights from Knoxville to Niagara Falls?

    For a flight from Knoxville to Niagara Falls, you will be flying from McGhee Tyson. Knoxville McGhee Tyson (TYS) is just 11.3 mi from the center of the city. McGhee Tyson is the only Knoxville airport and it handles 0 outbound flights to Niagara Falls per day. 2 airlines have flights to Niagara Falls from Knoxville McGhee Tyson on a regular basis.

  • How long is the flight from Knoxville to Niagara Falls?

    American Airlines can get you from Knoxville to Niagara Falls in just under 10h 35m. Your travel time can differ by up to . The distance from Knoxville to Niagara Falls is about 591 mi.

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

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

  • How can I find direct flights from Knoxville to Niagara Falls?

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

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

    Yes. Cheapflights offers flight deals from Knoxville to Niagara Falls 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 Niagara Falls?

    Currently, April is the cheapest month in which you can book a flight from Knoxville to Niagara Falls (average of $158). Flying from Knoxville to Niagara Falls in August is currently the most expensive (average of $815). 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

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Top 2 airlines flying from Knoxville to Niagara Falls

Discover the top 2 airlines that operate flights from Knoxville to Niagara Falls. 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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$443Average$755FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$488Average$755FlexibilityNo cancel feeOn-time69%

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