$738+ Cheap flights from Great Falls to Knoxville (GTF - TYS)
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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — TYS
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from Great Falls to Knoxville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Great Falls to Knoxville
Cheapest
Best
Last-minute
Cheapest flights from Great Falls to KnoxvilleExplore the most affordable flight options available from Great Falls to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Great Falls to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/142:37 pm -
2 stops17h 08m
Tue 10/2010:42 am -
2 stops12h 40m
Deal found 9/7![United Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/232:37 pm -
1 stop5h 37m
Mon 10/267:35 pm -
2 stops20h 14m
Deal found 9/6![United Airlines logo]()
$841
Best flights from Great Falls to KnoxvilleDiscover carefully curated flight deals from Great Falls to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Great Falls to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/142:37 pm -
2 stops17h 08m
Tue 10/2010:42 am -
2 stops12h 40m
Deal found 9/7![United Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/232:37 pm -
1 stop5h 37m
Mon 10/267:35 pm -
2 stops20h 14m
Deal found 9/6![United Airlines logo]()
$841
Last-minute flights from Great Falls to KnoxvilleDiscover last-minute flight deals from Great Falls to Knoxville. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to Knoxville. Data last updated September 9, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/142:37 pm -
2 stops17h 08m
Tue 10/2010:42 am -
2 stops12h 40m
Deal found 9/7![United Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/232:37 pm -
1 stop5h 37m
Mon 10/267:35 pm -
2 stops20h 14m
Deal found 9/6![United Airlines logo]()
$841
Find flight deals from Great Falls to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Knoxville (TYS). 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 September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $738 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Great Falls to Knoxville 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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from Great Falls to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Great FallsKnoxville
GTF Great Falls - TYS Knoxville McGhee Tyson
GTFTYS
Great Falls
Wed 10/14
2:37 pm-9:45 am
2 stops17h 08m
Knoxville McGhee Tyson
Tue 10/20
10:42 am-9:22 pm
2 stops12h 40m
$738
Quickest round-trip
Great FallsKnoxville
GTF Great Falls - TYS Knoxville McGhee Tyson
GTFTYS
Great Falls
Fri 10/23
2:37 pm-10:14 pm
1 stop5h 37m
Knoxville McGhee Tyson
Mon 10/26
7:35 pm-1:49 pm
2 stops20h 14m
$841
Sorted by cheapest first
Compare providers for flights from Great Falls to Knoxville
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 Great Falls to Knoxville in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Great Falls-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Great Falls-Knoxville 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 Great Falls-Knoxville 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 Great Falls to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Great Falls with our price prediction graph.
GTF-TYS
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 Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated September 9, 2026.
Read reviews from past customers who have flown United Airlines from Great Falls to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Boarding
7.7
Entertainment
7.1
Crew
8.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Boarding
7.7
Entertainment
7.1
Crew
8.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Great Falls to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
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Top airline flying from Great Falls to Knoxville
Discover the top airline that operate flights from Great Falls to Knoxville. 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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$413 | Average$626 | FlexibilityNo cancel fee | On-time69% |