Cheap flights from Knoxville to Great Falls from $289

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Great Falls departing on 11/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Knoxville to Great Falls (TYS-GTF)

Cheap round-trip flights

Delta Logo
8:45 am - 5:30 pmTYS-GTF
10h 45m2 stops
Delta Logo
6:10 pm - 9:37 amGTF-TYS
13h 27m2 stops
$289Delta
Find Deal
Sat, Nov 15 - Tue, Nov 18
Delta Logo
7:30 am - 5:42 pmTYS-GTF
12h 12m2 stops
Delta Logo
6:20 pm - 9:11 amGTF-TYS
12h 51m2 stops
$344Delta
Find Deal
Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
5:45 am - 1:33 pmTYS-GTF
9h 48m2 stops
United Airlines Logo
6:20 am - 2:43 pmGTF-TYS
6h 23m1 stop
$374United Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
8:52 am - 1:37 pmTYS-GTF
6h 45m1 stop
United Airlines Logo
7:00 am - 3:06 pmGTF-TYS
6h 06m1 stop
$400United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
9:55 am - 9:28 pmTYS-GTF
13h 33m2 stops
United Airlines Logo
7:00 am - 3:06 pmGTF-TYS
6h 06m1 stop
$405United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
4:50 pm - 10:39 pmTYS-GTF
7h 49m1 stop
United Airlines Logo
2:30 pm - 10:30 pmGTF-TYS
6h 00m1 stop
$429United Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
5:45 am - 1:33 pmTYS-GTF
9h 48m2 stops
United Airlines Logo
6:20 am - 2:43 pmGTF-TYS
6h 23m1 stop
$439United Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
10:54 am - 9:28 pmTYS-GTF
12h 34m2 stops
United Airlines Logo
2:31 pm - 10:10 amGTF-TYS
17h 39m2 stops
$471United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
7:00 am - 9:28 pmTYS-GTF
16h 28m3 stops
United Airlines Logo
2:31 pm - 10:10 amGTF-TYS
17h 39m2 stops
$476United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
7:00 am - 1:26 pmTYS-GTF
32h 26m2 stops
United Airlines Logo
2:30 pm - 10:30 pmGTF-TYS
6h 00m1 stop
$676United Airlines
Find Deal
Mon, Oct 20 - Mon, Oct 27

Delta flights from Knoxville to Great Falls

Our best Delta deals on Knoxville to Great Falls flight tickets
Delta
Nov 15
TYS8:45 amKnoxville McGhee Tyson
10h 45m
2 stops
GTF5:30 pmGreat Falls
Nov 18
GTF6:10 pmGreat Falls
13h 27m
2 stops
TYS9:37 amKnoxville McGhee Tyson
Delta
Nov 15
TYS7:30 amKnoxville McGhee Tyson
12h 12m
2 stops
GTF5:42 pmGreat Falls
Nov 18
GTF6:20 pmGreat Falls
12h 51m
2 stops
TYS9:11 amKnoxville McGhee Tyson

United Airlines flights from Knoxville to Great Falls

Our best United Airlines deals on Knoxville to Great Falls flight tickets
United Airlines
Nov 15
TYS5:45 amKnoxville McGhee Tyson
9h 48m
2 stops
GTF1:33 pmGreat Falls
Nov 18
GTF6:20 amGreat Falls
6h 23m
1 stop
TYS2:43 pmKnoxville McGhee Tyson
United Airlines
Sep 20
TYS8:52 amKnoxville McGhee Tyson
6h 45m
1 stop
GTF1:37 pmGreat Falls
Sep 27
GTF7:00 amGreat Falls
6h 06m
1 stop
TYS3:06 pmKnoxville McGhee Tyson
United Airlines
Sep 20
TYS9:55 amKnoxville McGhee Tyson
13h 33m
2 stops
GTF9:28 pmGreat Falls
Sep 27
GTF7:00 amGreat Falls
6h 06m
1 stop
TYS3:06 pmKnoxville McGhee Tyson

momondo 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, momondo users made 832,500 searches. Data last updated August 25, 2025.
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

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 11/15

8:45 am-5:30 pm

2 stops10h 45m

Great Falls

Tue 11/18

6:10 pm-9:37 am

2 stops13h 27m

$289

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 11/15

7:30 am-5:42 pm

2 stops12h 12m

Great Falls

Tue 11/18

6:20 pm-9:11 am

2 stops12h 51m

$344

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 11/15

5:45 am-1:33 pm

2 stops9h 48m

Great Falls

Tue 11/18

6:20 am-2:43 pm

1 stop6h 23m

$374

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 9/20

8:52 am-1:37 pm

1 stop6h 45m

Great Falls

Sat 9/27

7:00 am-3:06 pm

1 stop6h 06m

$400

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 9/20

9:55 am-9:28 pm

2 stops13h 33m

Great Falls

Sat 9/27

7:00 am-3:06 pm

1 stop6h 06m

$405

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 11/15

4:50 pm-10:39 pm

1 stop7h 49m

Great Falls

Tue 11/18

2:30 pm-10:30 pm

1 stop6h 00m

$429

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 11/15

5:45 am-1:33 pm

2 stops9h 48m

Great Falls

Tue 11/18

6:20 am-2:43 pm

1 stop6h 23m

$439

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 9/20

10:54 am-9:28 pm

2 stops12h 34m

Great Falls

Sat 9/27

2:31 pm-10:10 am

2 stops17h 39m

$471

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Sat 9/20

7:00 am-9:28 pm

3 stops16h 28m

Great Falls

Sat 9/27

2:31 pm-10:10 am

2 stops17h 39m

$476

KnoxvilleGreat Falls

TYS - GTF

TYSGTF

Knoxville McGhee Tyson

Mon 10/20

7:00 am-1:26 pm

2 stops32h 26m

Great Falls

Mon 10/27

2:30 pm-10:30 pm

1 stop6h 00m

$676

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Great Falls from

How to get the cheapest flight ticket from Knoxville to Great Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Great Falls?

The cheapest day to depart on your flight to Great Falls is on a Saturday when prices can be found for as low as $593. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from Knoxville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $704.

What is the cheapest time of day to depart on your flight to Great Falls?

According to our data, the cheapest time of day to fly to Great Falls is in the afternoon. momondo users have found flights departing from Knoxville to Great Falls in the afternoon for as low as $593. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $704 on average. Flights to Great Falls from Knoxville in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Knoxville to Great Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Great Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Great Falls (TYS to GTF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Great Falls

Direct flights

None
There are no direct flights from Knoxville to Great Falls. There are no popular flight routes from Knoxville to Great Falls.
  • How far is Knoxville McGhee Tyson to Great Falls by plane?

    Knoxville McGhee Tyson and Great Falls are 1607.9 mi apart from one another. In terms of flight time, this usually takes a little over 6h 31m.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Great Falls Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Great Falls Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Great Falls Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Knoxville McGhee Tyson Airport to Great Falls Airport.

  • What documentation or ID do you need to fly to Great Falls Airport?

    The travel and health documents required for your trip to Great Falls Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Great Falls Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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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Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Great Falls?

Finding the right flight to Great Falls from Knoxville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Great Falls quick and easy, saving you time and money.

Can I find flights from Knoxville to Great Falls with flexible booking policies on momondo?

Flights from Knoxville to Great Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Knoxville to Great Falls?

momondo provides multiple filters to help you find the best flight to Great Falls from Knoxville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Knoxville to Great Falls right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Knoxville to Great Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Sat 8/30
Sat 9/6

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