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$434+ Cheap flights from Knoxville to Great Falls (TYS - GTF)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — GTF
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
1 adult, Economy
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Cheap flight deals from Knoxville to Great Falls

Cheapest flights from Knoxville to Great Falls
Explore the most affordable flight options available from Knoxville to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.

This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:50 pm
TYS
-
GTF
1 stop6h 22m
United Airlines
Tue 8/186:15 am
GTF
-
TYS
2 stops13h 30m
United Airlines
Deal found 7/16$434
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 8/299:00 am
TYS
-
GTF
1 stop6h 29m
United Airlines
Tue 9/16:15 am
GTF
-
TYS
1 stop7h 39m
United Airlines
Deal found 7/20$438
This United Airlines deal was found by Cheapflights users on 7/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/64:56 pm
TYS
-
GTF
1 stop6h 38m
United Airlines
Sun 8/92:37 pm
GTF
-
TYS
1 stop5h 42m
United Airlines
Deal found 7/18$453
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Sun 8/164:50 pm
TYS
-
GTF
1 stop6h 22m
United Airlines
Sun 8/232:25 pm
GTF
-
TYS
1 stop6h 04m
United Airlines
Deal found 7/19$507
This Delta deal was found by Cheapflights users on 7/19. 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 8/1612:01 pm
TYS
-
GTF
2 stops12h 37m
Delta
Sun 8/236:18 pm
GTF
-
TYS
2 stops13h 18m
Delta
Deal found 7/19$514
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Fri 9/44:50 pm
TYS
-
GTF
1 stop6h 22m
United Airlines
Mon 9/72:25 pm
GTF
-
TYS
1 stop6h 04m
United Airlines
Deal found 7/20$552
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sun 9/134:50 pm
TYS
-
GTF
1 stop6h 22m
United Airlines
Sat 9/196:15 am
GTF
-
TYS
2 stops8h 43m
United Airlines
Deal found 7/20$623

Find flight deals from Knoxville to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Great Falls (GTF). 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 July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$434
(United Airlines)
Provider with most accurate pricing for Knoxville McGhee Tyson-Great Falls flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Great Falls flights.
Search Deals
From Knoxville McGhee Tyson to Great Falls
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Great 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 July 21, 2026.
Use the filters below to find and compare flights from Knoxville to Great Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 8/29

9:00 am-1:29 pm

1 stop6h 29m

Great Falls

Tue 9/1

6:15 am-3:54 pm

1 stop7h 39m

$438
Quickest round-trip

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sun 8/16

4:50 pm-9:12 pm

1 stop6h 22m

Great Falls

Sun 8/23

2:25 pm-10:29 pm

1 stop6h 04m

$507

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sun 8/16

12:01 pm-10:38 pm

2 stops12h 37m

Great Falls

Sun 8/23

6:18 pm-9:36 am

2 stops13h 18m

$514

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Fri 9/4

4:50 pm-9:12 pm

1 stop6h 22m

Great Falls

Mon 9/7

2:25 pm-10:29 pm

1 stop6h 04m

$552

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Sorted by cheapest first

Compare providers for flights from Knoxville to Great Falls

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 Great Falls in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Great Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Great Falls 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-Great Falls 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 Great Falls

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

Reviews of airlines servicing Great Falls

Get insights into the airlines that provide service to Great 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 Great Falls. Reviews last updated July 21, 2026.
See what other customers who have flown with United Airlines from Knoxville to Great Falls have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,011 reviews

Boarding

7.7

Overall

7.4

Food

6.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,011 reviews
United Airlines
7.4
Good
10,011 reviews

Boarding

7.7

Overall

7.4

Food

6.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

Related info for your journey

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

    Departing from Knoxville to Great Falls will take you 6h 29m. There are 1614 mi between Knoxville and Great Falls.

  • What is the cheapest airline to fly from Knoxville to Great Falls round-trip?

    Flying on United Airlines is currently your cheapest option to Great Falls, with prices starting at $298.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Knoxville to Great 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.

See more FAQs

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
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Top airline flying from Knoxville to Great Falls

Discover the top airline that operate flights from Knoxville to Great 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 July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$298Average$637FlexibilityNo cancel feeOn-time69%

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