$39 Find Cheap Flights from Knoxville to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to the United States departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Knoxville to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
Newarknonstop$138
Orlando
Orlandononstop$117
Burbank
Burbank2 stops$305
Las Vegas
Las Vegasnonstop$187
Chicago
Chicagononstop$189
Miami
Miami1 stop$187
San Francisco
San Francisco1 stop$221
Boston
Bostonnonstop$93
Denver
Denvernonstop$129
Fort Lauderdale
Fort Lauderdalenonstop$136
Seattle
Seattle1 stop$213
Atlanta
Atlanta1 stop$175
Dallas
Dallas1 stop$160
Tampa
Tampa1 stop$160
Houston
Houston1 stop$195
Honolulu
Honolulu2 stops$586
San Diego
San Diego1 stop$237
Philadelphia
Philadelphianonstop$146
New York
Newarknonstop$138
Orlando
Orlandononstop$117
Burbank
Burbank2 stops$305
Las Vegas
Las Vegasnonstop$187
Chicago
Chicagononstop$189
Miami
Miami1 stop$187
San Francisco
San Francisco1 stop$221
Boston
Bostonnonstop$93
Denver
Denvernonstop$129
Fort Lauderdale
Fort Lauderdalenonstop$136
Seattle
Seattle1 stop$213
Atlanta
Atlanta1 stop$175
Dallas
Dallas1 stop$160
Tampa
Tampa1 stop$160
Houston
Houston1 stop$195
Honolulu
Honolulu2 stops$586
San Diego
San Diego1 stop$237
Philadelphia
Philadelphianonstop$146

Book Cheap Knoxville to the United States Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to the United States that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Fri, Jun 5 - Mon, Jun 15
Allegiant Air Logo
7:27 pm - 9:03 pm
TYS
-
MCO
1h 36mnonstop
Allegiant Air Logo
9:48 pm - 11:34 pm
MCO
-
TYS
1h 46mnonstop
$117Allegiant Air
Fri, May 8 - Mon, May 11
Allegiant Air Logo
1:15 pm - 2:51 pm
TYS
-
MCO
1h 36mnonstop
Allegiant Air Logo
3:41 pm - 5:30 pm
MCO
-
TYS
1h 49mnonstop
$118Allegiant Air
Thu, May 7 - Sun, May 10
Frontier Logo
4:28 pm - 6:00 pm
TYS
-
DEN
3h 32mnonstop
Frontier Logo
10:45 am - 3:33 pm
DEN
-
TYS
2h 48mnonstop
$129Frontier
Thu, May 7 - Sun, May 10
Frontier Logo
4:28 pm - 6:00 pm
TYS
-
DEN
3h 32mnonstop
Frontier Logo
10:45 am - 3:33 pm
DEN
-
TYS
2h 48mnonstop
$130Frontier
Thu, Apr 9 - Sun, Apr 12
United Airlines Logo
7:00 am - 7:55 am
TYS
-
ORD
1h 55mnonstop
United Airlines Logo
7:15 am - 10:08 am
ORD
-
TYS
1h 53mnonstop
$189United Airlines
Fri, Mar 20 - Tue, Mar 24
United Airlines Logo
7:00 am - 8:00 am
TYS
-
ORD
2h 00mnonstop
United Airlines Logo
6:06 pm - 8:47 pm
ORD
-
TYS
1h 41mnonstop
$204United Airlines
Tue, Mar 31 - Tue, Apr 7
Southwest Logo
2:25 pm - 6:50 pm
TYS
-
HOU
5h 25m
1 stop
Southwest Logo
9:30 am - 2:20 pm
HOU
-
TYS
3h 50m
1 stop
$204Southwest
Sat, May 30 - Tue, Jun 2
American Airlines Logo
8:11 pm - 9:41 pm
TYS
-
DFW
2h 30mnonstop
American Airlines Logo
8:40 pm - 11:53 pm
DFW
-
TYS
2h 13mnonstop
$207American Airlines
Fri, Apr 17 - Fri, Apr 24
American Airlines Logo
8:48 pm - 9:57 pm
TYS
-
ORD
2h 09mnonstop
American Airlines Logo
6:30 pm - 9:21 pm
ORD
-
TYS
1h 51mnonstop
$208American Airlines
Sat, Mar 28 - Mon, Mar 30
Southwest Logo
7:10 pm - 12:45 am
TYS
-
HOU
6h 35m
1 stop
Southwest Logo
11:45 am - 6:45 pm
HOU
-
TYS
6h 00m
1 stop
$209Southwest
Booking Insights

KAYAK's insights & trends for Knoxville to the United States flights

Get data-powered insights and trends into flights from Knoxville to the United States to help you find the cheapest flights, the best time to fly and much more.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United States from Knoxville found in the last 72 hours was to Boston, at $75 round-trip. The most popular route is from Knoxville (TYS) to Atlanta (ATL), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $249.

Can I save money by flying with a layover from Knoxville to the United States?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $292, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Knoxville to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to the United States, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to the United States is April, when tickets cost $224 (return) on average. On the other hand, the most expensive months are March and November, when the average cost of round-trip tickets is $470 and $414 respectively.

Good to know

Low seasonFebruary
Cheapest flight$39
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Knoxville to Denver

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Knoxville to the United States?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Knoxville to the United States is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to the United States?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Knoxville to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to the United States?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Knoxville to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally in the morning, when round-trip flights cost $294 on average. Morning departures are around 22% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the evening, which is peak travel time and where the average cost of a ticket is $375.

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from Knoxville to the following destinations at these prices or less: Atlanta $217 one-way - $407 round-trip; Dallas $211 one-way - $430 round-trip; Chicago $233 one-way - $367 round-trip

Reviews of the top 5 airlines serving from Knoxville to the United States

 
Need help choosing which airline to fly with from Knoxville to the United States? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8270 reviews
7.8Entertainment
8.1Boarding
8.5Crew
7.9Comfort
7.2Food
Airline reviews

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

8.0 ExcellentAnonymous, Mar 2026
SEA - RDU
Read more Delta reviews

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

Good flight. Connector flight was delayed so made a short turnaround in Atlanta which was stressful. Otherwise, great crew, Staff in ATL was very informative about the delay and ensured people their connections were fine. Notified the ones that were not. Great communication.

The flight went very well, but the flight attendants didn't serve and food or drinks other than 1st class due to rough air but to be honest it wasn't that bumpy and I felt that they could've at least offered water and coffee perhaps. Also serving 1st class only is a bad look. I've been in 1st class many times and I would've felt that if the turbulence was too rough for the main cabin, it would be too rough for 1st class too.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

My seatback screen didn’t work so that sucked because that’s what I was going to do on the plane.

Left a few minutes early. Got in 15 minutes early. Very attentive service on board. Very organized boarding.

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

The baggage claim experience was poor. The plane crew and the AA app said that checked baggage in CLT would be at carousel 7 but the sign at Baggage Claim said carousel 1. The carousel 1 sign had the correct flight # listed above the belt. But the luggage never came. I went to an AA baggage claim office after about 1 hour and the clerk directed me to another AA room that was poorly marked, with a closed door and no obvious way to know what to do. Finally someone opened the door and my bag was inside. The clerk was totally unable to explain why.

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Forced to check bags. Crew uninterested in collecting trash. Unclean seats.

why would I bother with this airline and pick seats when I am asked to move for a weight imbalance

Flight pulled out on time but sat on runway for 30 mins. It was extremely cold in the aircraft despite wearing a winter coat. Surprisingly they had a vegetarian meal but could have some better snack choices for a 8 hour flight.

We had a male flight attendant who was super attentive and wonderful! Very professional. I have both gluten and dairy intolerance, and was only able to get a gluten free part, and not the dairy free part of the meal. Easy to order ahead of time and I appreciate being able to do that.

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

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