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Niagara Falls

$297+ Cheap flights from Knoxville (TYS) to Niagara Falls, Canada

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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — YYZ
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$527
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
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Highest demand for flights based on searches. 25% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/179:29 pmTYS - YYZ
1 stop16h 36mMultiple Airlines
Fri 11/217:15 amYYZ - TYS
1 stop14h 15mMultiple Airlines
Deal found 10/13$297
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1811:24 amTYS - YYZ
1 stop24h 19mMultiple Airlines
Fri 11/217:15 amYYZ - TYS
1 stop14h 15mMultiple Airlines
Deal found 10/13$316
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/282:59 pmTYS - YYZ
1 stop9h 12mMultiple Airlines
Fri 12/512:50 pmYYZ - TYS
1 stop8h 59mMultiple Airlines
Deal found 10/14$347
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:32 pmTYS - YYZ
1 stop19h 11mMultiple Airlines
Tue 11/187:15 amYYZ - TYS
2 stops29h 42mMultiple Airlines
Deal found 10/13$353
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:00 amTYS - YYZ
2 stops41h 11mMultiple Airlines
Wed 12/39:35 amYYZ - TYS
1 stop26h 18mMultiple Airlines
Deal found 10/12$356
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/65:38 pmTYS - YYZ
1 stop18h 05mMultiple Airlines
Tue 11/115:15 pmYYZ - TYS
2 stops49h 07mMultiple Airlines
Deal found 10/14$386
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:15 amTYS - YYZ
1 stop11h 45mMultiple Airlines
Tue 11/47:45 pmYYZ - TYS
2 stops19h 57mMultiple Airlines
Deal found 10/14$409
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:30 amTYS - YYZ
2 stops12h 38mMultiple Airlines
Mon 11/37:00 amYYZ - TYS
1 stop11h 27mMultiple Airlines
Deal found 10/14$413
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:15 amTYS - YYZ
1 stop11h 45mMultiple Airlines
Thu 11/67:55 pmYYZ - TYS
1 stop20h 55mMultiple Airlines
Deal found 10/14$419

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 October 14, 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

Mon 11/17

9:29 pm-2:05 pm

1 stop16h 36m

Toronto Pearson Intl

Fri 11/21

7:15 am-9:30 pm

1 stop14h 15m

$297

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Tue 11/18

11:24 am-11:43 am

1 stop24h 19m

Toronto Pearson Intl

Fri 11/21

7:15 am-9:30 pm

1 stop14h 15m

$316

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Wed 11/12

4:32 pm-11:43 am

1 stop19h 11m

Toronto Pearson Intl

Tue 11/18

7:15 am-12:57 pm

2 stops29h 42m

$353

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Wed 11/26

7:00 am-12:11 am

2 stops41h 11m

Toronto Pearson Intl

Wed 12/3

9:35 am-11:53 am

1 stop26h 18m

$356

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Sat 11/8

7:54 am-4:04 pm

1 stop8h 10m

Toronto Pearson Intl

Sat 11/15

11:32 am-9:24 pm

1 stop9h 52m

$413

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Sat 11/1

7:30 am-8:08 pm

2 stops12h 38m

Toronto Pearson Intl

Mon 11/3

7:00 am-6:27 pm

1 stop11h 27m

$413

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Fri 10/31

8:15 am-8:00 pm

1 stop11h 45m

Toronto Pearson Intl

Thu 11/6

7:55 pm-4:50 pm

1 stop20h 55m

$419

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Fri 10/31

8:15 am-8:00 pm

1 stop11h 45m

Toronto Pearson Intl

Wed 11/5

3:15 pm-9:04 am

2 stops17h 49m

$425

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Fri 11/28

12:45 pm-12:26 am

3 stops35h 41m

Toronto Pearson Intl

Fri 12/5

12:50 pm-9:49 pm

1 stop8h 59m

$430

KnoxvilleToronto

TYS - YYZ

TYSYYZ

Knoxville McGhee Tyson

Thu 10/30

5:24 pm-11:43 am

1 stop18h 19m

Toronto Pearson Intl

Wed 11/5

3:15 pm-9:04 am

2 stops17h 49m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 11 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 October 14, 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 52% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from Knoxville to Niagara Falls?

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 October 14, 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
8,976 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,976 reviews
United Airlines
7.4
Good
8,976 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
American Airlines
7.2
Good
11,042 reviews
United Airlines
7.4
Good
8,976 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$372Average$755FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$488Average$755FlexibilityNo cancel feeOn-time69%

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