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Cheap flights from the United States to Knoxville from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Knoxville departing on 11/21. 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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Find the cheapest flights from the United States to Knoxville

Recent round-trip flight deals from the United States to Knoxville

Enter your travel dates to find the best prices.
Allegiant Air Logo
8:23 pm - 10:03 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
12:24 pm - 2:08 pmTYS-IAD
1h 44mnonstop
$90Allegiant Air
Find Deal
Sun, Nov 23 - Tue, Nov 25
Allegiant Air Logo
7:57 pm - 9:37 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:23 pm - 7:07 pmTYS-IAD
1h 44mnonstop
$91Allegiant Air
Find Deal
Thu, Dec 4 - Sun, Dec 7
Allegiant Air Logo
7:57 pm - 9:37 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:23 pm - 7:07 pmTYS-IAD
1h 44mnonstop
$96Allegiant Air
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
11:12 am - 3:57 pmDEN-TYS
2h 45mnonstop
Frontier Logo
4:52 pm - 6:23 pmTYS-DEN
3h 31mnonstop
$111Frontier
Find Deal
Thu, Dec 11 - Mon, Dec 15
Frontier Logo
11:12 am - 3:57 pmDEN-TYS
2h 45mnonstop
Frontier Logo
4:52 pm - 6:23 pmTYS-DEN
3h 31mnonstop
$116Frontier
Find Deal
Sun, Dec 7 - Mon, Dec 8
United Airlines Logo
7:42 am - 10:32 amORD-TYS
1h 50mnonstop
United Airlines Logo
6:45 am - 7:48 amTYS-ORD
2h 03mnonstop
$189United Airlines
Find Deal
Fri, Jan 23 - Sun, Jan 25
Delta Logo
2:30 pm - 8:00 pmORD-TYS
4h 30m1 stop
Delta Logo
5:40 am - 10:14 amTYS-ORD
5h 34m1 stop
$209Delta
Find Deal
Wed, Dec 10 - Sun, Dec 14
Delta Logo
2:32 pm - 8:02 pmHOU-TYS
4h 30m1 stop
Delta Logo
5:40 am - 9:34 amTYS-HOU
4h 54m1 stop
$229Delta
Find Deal
Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
7:42 am - 2:00 pmJFK-TYS
6h 18m1 stop
American Airlines Logo
11:21 am - 3:09 pmTYS-JFK
3h 48m1 stop
$267American Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 17
American Airlines Logo
7:55 am - 3:20 pmJFK-TYS
7h 25m1 stop
American Airlines Logo
7:00 am - 1:52 pmTYS-JFK
6h 52m2 stops
$272American Airlines
Find Deal
Wed, Feb 11 - Sat, Feb 14

American Airlines flights from United States to Knoxville

Our best American Airlines deals on United States to Knoxville flight tickets
American Airlines
Dec 15
DEN6:00 amDenver Intl
7h 32m
1 stop
TYS3:32 pmKnoxville McGhee Tyson
Dec 15
TYS6:29 pmKnoxville McGhee Tyson
5h 51m
1 stop
DEN10:20 pmDenver Intl
$213
Find similar
American Airlines
Dec 12
ORD6:48 pmChicago O'Hare Intl
1h 52m
TYS9:40 pmKnoxville McGhee Tyson
Dec 15
TYS2:58 pmKnoxville McGhee Tyson
2h 08m
ORD4:06 pmChicago O'Hare Intl
$223
Find similar
American Airlines
Dec 10
ORD9:51 amChicago O'Hare Intl
1h 53m
TYS12:44 pmKnoxville McGhee Tyson
Dec 17
TYS4:59 pmKnoxville McGhee Tyson
5h 20m
1 stop
ORD9:19 pmChicago O'Hare Intl
$224
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Allegiant Air flights from United States to Knoxville

Our best Allegiant Air deals on United States to Knoxville flight tickets
Allegiant Air
Nov 20
IAD8:23 pmWashington, D.C. Dulles Intl
1h 40m
TYS10:03 pmKnoxville McGhee Tyson
Nov 23
TYS5:49 pmKnoxville McGhee Tyson
1h 44m
IAD7:33 pmWashington, D.C. Dulles Intl
$89
Find similar
Allegiant Air
Nov 23
IAD8:23 pmWashington, D.C. Dulles Intl
1h 40m
TYS10:03 pmKnoxville McGhee Tyson
Nov 25
TYS12:24 pmKnoxville McGhee Tyson
1h 44m
IAD2:08 pmWashington, D.C. Dulles Intl
$90
Find similar
Allegiant Air
Nov 20
IAD8:23 pmWashington, D.C. Dulles Intl
1h 40m
TYS10:03 pmKnoxville McGhee Tyson
Nov 23
TYS5:49 pmKnoxville McGhee Tyson
1h 44m
IAD7:33 pmWashington, D.C. Dulles Intl
$91
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States 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, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from the United States to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sun 11/23

8:23 pm-10:03 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Tue 11/25

12:24 pm-2:08 pm

Nonstop1h 44m

$90

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 12/4

7:57 pm-9:37 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 12/7

5:23 pm-7:07 pm

Nonstop1h 44m

$91

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 12/4

7:57 pm-9:37 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 12/7

5:23 pm-7:07 pm

Nonstop1h 44m

$96

DenverKnoxville

DEN - TYS

DENTYS

Denver Intl

Thu 12/11

11:12 am-3:57 pm

Nonstop2h 45m

Knoxville McGhee Tyson

Mon 12/15

4:52 pm-6:23 pm

Nonstop3h 31m

$111

DenverKnoxville

DEN - TYS

DENTYS

Denver Intl

Sun 12/7

11:12 am-3:57 pm

Nonstop2h 45m

Knoxville McGhee Tyson

Mon 12/8

4:52 pm-6:23 pm

Nonstop3h 31m

$116

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 1/23

7:42 am-10:32 am

Nonstop1h 50m

Knoxville McGhee Tyson

Sun 1/25

6:45 am-7:48 am

Nonstop2h 03m

$189

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Wed 12/10

2:30 pm-8:00 pm

1 stop4h 30m

Knoxville McGhee Tyson

Sun 12/14

5:40 am-10:14 am

1 stop5h 34m

$209

HoustonKnoxville

HOU - TYS

HOUTYS

Houston Hobby

Wed 12/3

2:32 pm-8:02 pm

1 stop4h 30m

Knoxville McGhee Tyson

Wed 12/10

5:40 am-9:34 am

1 stop4h 54m

$229

New YorkKnoxville

JFK - TYS

JFKTYS

New York John F Kennedy Intl

Wed 12/10

7:42 am-2:00 pm

1 stop6h 18m

Knoxville McGhee Tyson

Wed 12/17

11:21 am-3:09 pm

1 stop3h 48m

$267

New YorkKnoxville

JFK - TYS

JFKTYS

New York John F Kennedy Intl

Wed 2/11

7:55 am-3:20 pm

1 stop7h 25m

Knoxville McGhee Tyson

Sat 2/14

7:00 am-1:52 pm

2 stops6h 52m

$272

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Knoxville from

How to get the cheapest flight ticket from United States to Knoxville

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 month to fly to Knoxville?

The month of January is, on average, the cheapest month to fly to Knoxville from United States, with most prices found around $231. If you aren’t able to travel during the month of January, then book flights to Knoxville from United States during February instead. Flights to Knoxville in February, while not as cheap as those in January, still average around $264.

What is the cheapest day to depart on your flight to Knoxville?

The cheapest day to depart from United States to Knoxville is on a Wednesday. Travelers who choose to depart for Knoxville on a Wednesday will often find tickets for as low as $260. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from United States to Knoxville for around $409.

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

In the morning is the cheapest time of day to fly from United States to Knoxville when you can find flight prices for as low as $276. Flying to Knoxville in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the evening when prices are around $359.

What is the cheapest United States to Knoxville McGhee Tyson flight route?

Fly from Boston Logan Intl to Knoxville McGhee Tyson for the best United States - Knoxville McGhee Tyson flight prices

What cabin class options are available on United States to Knoxville McGhee Tyson flights?

There are 3 cabin classes available to choose from on United States to Knoxville McGhee Tyson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to Knoxville flights?

No. A direct flight is the cheapest option for a flight between United States to Knoxville.

Cheap United States to Knoxville flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Knoxville

Best Price Found

$50

Fastest flight time

1h 37m

Direct flights

Every day

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from United States in the past 72 hours is $50. The best round-trip flight deal from United States to Knoxville found on momondo in the last 72 hours is $84.
The fastest flight from United States to Knoxville takes 1h 37m
Direct flights go from United States to Knoxville every day.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)
Search flight deals

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

    Prices for flights from United States to Knoxville McGhee Tyson Airport refresh daily.

  • How many operators does momondo search for flights from United States to Knoxville McGhee Tyson Airport?

  • How old do you have to be to fly from United States to Knoxville McGhee Tyson Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Knoxville McGhee Tyson Airport.

  • What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

    The travel and health documents you'll need for your trip to Knoxville McGhee Tyson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from United States to Knoxville?

Best airlines flying from United States to Knoxville

Compare and see reviews for airlines that fly from United States to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $64Free CancellationRating
7.2
698 reviews
Search Allegiant Air flights
FrontierPriceFrom $81Free CancellationRating
5.8
3,114 reviews
Search Frontier flights
DeltaPriceFrom $133Free CancellationRating
7.9
8,007 reviews
Search Delta flights
American AirlinesPriceFrom $193Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $233Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Crossville
Maryville
Murphy
Alcoa
Oak Ridge
Newport
Lenoir City
Kodak
Dandridge
Clinton
Jefferson City
Rockford

Why use momondo?

Why should I use momondo to find a flight deal from United States to Knoxville?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United States to Knoxville. momondo saves you time and could save you money on your trip.

Can I find flights from United States to Knoxville with flexible booking policies on momondo?

All flight searches from United States to Knoxville on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from United States to Knoxville?

Once all potential United States to Knoxville flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Knoxville, momondo offers a useful price alert feature which will track prices for flights to Knoxville from United States and alert you when they change.

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