Cheap flights from Knoxville to the United States from $38

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to the United States departing on 12/18. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
4:47 pm - 6:58 pm
TYS
-
FLL
2h 11mnonstop
Allegiant Air Logo
9:00 am - 11:09 am
FLL
-
TYS
2h 09mnonstop
$70Allegiant Air
Wed, Jan 21 - Sat, Jan 24
Allegiant Air Logo
9:25 pm - 11:31 pm
TYS
-
FLL
2h 06mnonstop
Allegiant Air Logo
6:00 am - 8:03 am
FLL
-
TYS
2h 03mnonstop
$76Allegiant Air
Fri, Dec 19 - Mon, Jan 5
Frontier Logo
4:25 pm - 12:33 am
TYS
-
IAH
9h 08m1 stop
Frontier Logo
6:45 am - 3:35 pm
IAH
-
TYS
7h 50m1 stop
$128Frontier
Fri, Jan 30 - Mon, Feb 2
Frontier Logo
4:25 pm - 12:33 am
TYS
-
IAH
9h 08m1 stop
Frontier Logo
10:51 am - 3:35 pm
IAH
-
TYS
27h 44m1 stop
$137Frontier
Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
6:45 am - 7:47 am
TYS
-
ORD
2h 02mnonstop
United Airlines Logo
7:25 am - 10:12 am
ORD
-
TYS
1h 47mnonstop
$189United Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
7:54 am - 9:02 am
TYS
-
ORD
2h 08mnonstop
American Airlines Logo
10:07 am - 12:46 pm
ORD
-
TYS
1h 39mnonstop
$190American Airlines
Thu, Jan 8 - Sun, Jan 11
United Airlines Logo
7:00 am - 8:01 am
TYS
-
ORD
2h 01mnonstop
United Airlines Logo
7:48 pm - 10:39 pm
ORD
-
TYS
1h 51mnonstop
$204United Airlines
Wed, Dec 17 - Sat, Jan 3
Delta Logo
7:30 am - 1:08 pm
TYS
-
ORD
6h 38m1 stop
Delta Logo
1:55 pm - 8:47 pm
ORD
-
TYS
5h 52m1 stop
$209Delta
Wed, Jan 7 - Sun, Jan 11
Delta Logo
5:40 am - 10:21 am
TYS
-
HOU
5h 41m1 stop
Delta Logo
5:04 pm - 11:45 pm
HOU
-
TYS
5h 41m1 stop
$229Delta
Fri, Feb 6 - Mon, Feb 9
American Airlines Logo
6:00 am - 10:00 am
TYS
-
JFK
4h 00m1 stop
American Airlines Logo
2:29 pm - 10:03 pm
JFK
-
TYS
7h 34m1 stop
$244American Airlines
Wed, Feb 18 - Wed, Feb 25

Frontier flights from Knoxville to United States

Our best Frontier deals on Knoxville to United States flight tickets
Frontier
Dec 8
TYS4:52 pmKnoxville McGhee Tyson
3h 31m
DEN6:23 pmDenver Intl
Dec 15
DEN11:12 amDenver Intl
2h 45m
TYS3:57 pmKnoxville McGhee Tyson
Frontier
Dec 8
TYS4:52 pmKnoxville McGhee Tyson
3h 31m
DEN6:23 pmDenver Intl
Dec 14
DEN11:12 amDenver Intl
2h 45m
TYS3:57 pmKnoxville McGhee Tyson
Frontier
Jan 30
TYS4:25 pmKnoxville McGhee Tyson
9h 08m
1 stop
IAH12:33 amHouston George Bush Intcntl
Feb 2
IAH6:45 amHouston George Bush Intcntl
7h 50m
1 stop
TYS3:35 pmKnoxville McGhee Tyson

Delta flights from Knoxville to United States

Our best Delta deals on Knoxville to United States flight tickets
Delta
Jan 21
TYS5:40 amKnoxville McGhee Tyson
3h 54m
1 stop
EWR9:34 amNewark
Jan 24
EWR6:00 amNewark
5h 08m
1 stop
TYS11:08 amKnoxville McGhee Tyson
Delta
Jan 7
TYS7:30 amKnoxville McGhee Tyson
6h 38m
1 stop
ORD1:08 pmChicago O'Hare Intl
Jan 11
ORD1:55 pmChicago O'Hare Intl
5h 52m
1 stop
TYS8:47 pmKnoxville McGhee Tyson
Delta
Jan 7
TYS6:10 pmKnoxville McGhee Tyson
6h 45m
1 stop
DEN10:55 pmDenver Intl
Jan 10
DEN7:05 amDenver Intl
4h 45m
1 stop
TYS1:50 pmKnoxville McGhee Tyson

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to United States 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 December 4, 2025.
Use the filters below to find and compare flights from Knoxville to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleFort Lauderdale

TYS - FLL

TYSFLL

Knoxville McGhee Tyson

Wed 1/21

4:47 pm-6:58 pm

Nonstop2h 11m

Fort Lauderdale

Sat 1/24

9:00 am-11:09 am

Nonstop2h 09m

$70

KnoxvilleFort Lauderdale

TYS - FLL

TYSFLL

Knoxville McGhee Tyson

Fri 12/19

9:25 pm-11:31 pm

Nonstop2h 06m

Fort Lauderdale

Mon 1/5

6:00 am-8:03 am

Nonstop2h 03m

$76

KnoxvilleHouston

TYS - IAH

TYSIAH

Knoxville McGhee Tyson

Fri 1/30

4:25 pm-12:33 am

1 stop9h 08m

Houston George Bush Intcntl

Mon 2/2

6:45 am-3:35 pm

1 stop7h 50m

$128

KnoxvilleHouston

TYS - IAH

TYSIAH

Knoxville McGhee Tyson

Fri 1/23

4:25 pm-12:33 am

1 stop9h 08m

Houston George Bush Intcntl

Sun 1/25

10:51 am-3:35 pm

1 stop27h 44m

$137

KnoxvilleChicago

TYS - ORD

TYSORD

Knoxville McGhee Tyson

Thu 2/26

6:45 am-7:47 am

Nonstop2h 02m

Chicago O'Hare Intl

Mon 3/2

7:25 am-10:12 am

Nonstop1h 47m

$189

KnoxvilleChicago

TYS - ORD

TYSORD

Knoxville McGhee Tyson

Thu 1/8

7:54 am-9:02 am

Nonstop2h 08m

Chicago O'Hare Intl

Sun 1/11

10:07 am-12:46 pm

Nonstop1h 39m

$190

KnoxvilleChicago

TYS - ORD

TYSORD

Knoxville McGhee Tyson

Wed 12/17

7:00 am-8:01 am

Nonstop2h 01m

Chicago O'Hare Intl

Sat 1/3

7:48 pm-10:39 pm

Nonstop1h 51m

$204

KnoxvilleChicago

TYS - ORD

TYSORD

Knoxville McGhee Tyson

Wed 1/7

7:30 am-1:08 pm

1 stop6h 38m

Chicago O'Hare Intl

Sun 1/11

1:55 pm-8:47 pm

1 stop5h 52m

$209

KnoxvilleHouston

TYS - HOU

TYSHOU

Knoxville McGhee Tyson

Fri 2/6

5:40 am-10:21 am

1 stop5h 41m

Houston Hobby

Mon 2/9

5:04 pm-11:45 pm

1 stop5h 41m

$229

KnoxvilleNew York

TYS - JFK

TYSJFK

Knoxville McGhee Tyson

Wed 2/18

6:00 am-10:00 am

1 stop4h 00m

New York John F Kennedy Intl

Wed 2/25

2:29 pm-10:03 pm

1 stop7h 34m

$244

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 the United States from

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

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 United States?

In general, February is the cheapest month to fly from Knoxville to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $214. If you aren’t able to travel during the month of February, then book flights to United States from Knoxville during April instead. Flights to United States in April, while not as cheap as those in February, still average around $216.

What is the cheapest day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from Knoxville. The lowest ticket price found for a Wednesday departure recently was $255. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $339. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

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

The cheapest time of day to fly to United States is in the morning when flights can be purchased for as low as $291. Try not to purchase tickets in the afternoon because they tend to be around $355. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

There are 4 cabin classes available to choose from on Knoxville McGhee Tyson to United States 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 Knoxville to United States flights?

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

Cheap Knoxville to United States flight deals and tips

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

Best Price Found

$54

Fastest flight time

1h 02m

Direct flights

Every day

Airports in United States

2 airports
The best one-way flight to United States from Knoxville in the past 72 hours is $54. The best round-trip flight deal from Knoxville to United States found on momondo in the last 72 hours is $82.
The fastest flight from Knoxville to United States takes 1h 02m
Direct flights go from Knoxville to United States every day.
There are 2 airports near United States: Newark (EWR), Orlando Sanford Intl (SFB)
  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to United States?

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to United States.

  • What documentation or ID do you need to fly to United States?

    The travel and health documents required for your trip to United States 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 United States. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Knoxville to United States

Compare and see reviews for airlines that fly from Knoxville to United States with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $71Free CancellationRating
7.2
698 reviews
Search Allegiant Air flights
FrontierPriceFrom $77Free CancellationRating
5.8
3,092 reviews
Search Frontier flights
DeltaPriceFrom $182Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $198Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights
SouthwestPriceFrom $237Free CancellationRating
8.0
4,252 reviews
Search Southwest flights

Why use momondo?

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

It is quick and easy to find Knoxville to United States flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United States that suits you.

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

Yes. momondo allows you to filter the results for Knoxville to United States flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to United States 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 United States right now. Can momondo alert me if prices change?

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

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1 adult
Sat 1/3
Sat 1/10

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