$409+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — GTF
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Great Falls 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 Knoxville to Great Falls
Cheapest
Best
Last-minute
Cheapest flights from Knoxville to Great FallsExplore 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 September 8, 2026.
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 September 8, 2026.
This Delta deal was found by Cheapflights users on 9/5. 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.
Sat 12/127:06 am -
2 stops12h 33m
Thu 1/71:10 pm -
2 stops8h 36m
Deal found 9/5![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:00 am -
1 stop6h 49m
Sat 11/142:45 pm -
1 stop5h 47m
Deal found 9/3![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/5. 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 12/124:25 pm -
1 stop7h 25m
Thu 1/76:15 am -
1 stop6h 21m
Deal found 9/5![United Airlines logo]()
$503
Best flights from Knoxville to Great FallsDiscover carefully curated flight deals from Knoxville to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from Knoxville to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Delta deal was found by Cheapflights users on 9/5. 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.
Sat 12/127:06 am -
2 stops12h 33m
Thu 1/71:10 pm -
2 stops8h 36m
Deal found 9/5![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:00 am -
1 stop6h 49m
Sat 11/142:45 pm -
1 stop5h 47m
Deal found 9/3![United Airlines logo]()
$448
Last-minute flights from Knoxville to Great FallsDiscover last-minute flight deals from Knoxville to Great Falls. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Great Falls. Data last updated September 8, 2026 and is based on user searches.
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.
Sun 10/49:00 am -
1 stop6h 41m
Sun 10/112:37 pm -
1 stop5h 37m
Deal found 9/6![United Airlines logo]()
$2,296
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $409 (Delta) |
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 7,457,451 searches. Data last updated September 8, 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
Cheapest round-trip
KnoxvilleGreat Falls
TYS Knoxville McGhee Tyson - GTF Great Falls
TYSGTF
Knoxville McGhee Tyson
Sat 12/12
7:06 am-5:39 pm
2 stops12h 33m
Great Falls
Thu 1/7
1:10 pm-11:46 pm
2 stops8h 36m
$409
Quickest round-trip
KnoxvilleGreat Falls
TYS Knoxville McGhee Tyson - GTF Great Falls
TYSGTF
Knoxville McGhee Tyson
Wed 11/11
9:00 am-1:49 pm
1 stop6h 49m
Great Falls
Sat 11/14
2:45 pm-10:32 pm
1 stop5h 47m
$448
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 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 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.
TYS-GTF
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 September 8, 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.
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Food
6.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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.
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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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$614 | FlexibilityNo cancel fee | On-time69% |