$31 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 5/14. 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.
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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$125
Orlando
Orlandononstop$103
Los Angeles
Los Angeles1 stop$223
Las Vegas
Las Vegasnonstop$175
Chicago
Chicago1 stop$203
San Francisco
San Francisco1 stop$253
Miami
Miami1 stop$197
Boston
Bostonnonstop$112
Washington, D.C.
Washington, D.C.nonstop$116
Fort Lauderdale
Fort Lauderdalenonstop$121
Denver
Denvernonstop$130
Seattle
Seattle2 stops$308
Atlanta
Atlanta1 stop$151
Dallas
Dallasnonstop$177
Tampa
Tampa1 stop$161
Houston
Houstonnonstop$90
San Diego
San Diego1 stop$241
Honolulu
Honolulu1 stop$704
Philadelphia
Philadelphianonstop$83
New York
Newarknonstop$125
Orlando
Orlandononstop$103
Los Angeles
Los Angeles1 stop$223
Las Vegas
Las Vegasnonstop$175
Chicago
Chicago1 stop$203
San Francisco
San Francisco1 stop$253
Miami
Miami1 stop$197
Boston
Bostonnonstop$112
Washington, D.C.
Washington, D.C.nonstop$116
Fort Lauderdale
Fort Lauderdalenonstop$121
Denver
Denvernonstop$130
Seattle
Seattle2 stops$308
Atlanta
Atlanta1 stop$151
Dallas
Dallasnonstop$177
Tampa
Tampa1 stop$161
Houston
Houstonnonstop$90
San Diego
San Diego1 stop$241
Honolulu
Honolulu1 stop$704
Philadelphia
Philadelphianonstop$83

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

금, 6월 26 - 월, 7월 6
Allegiant Air Logo
5:30 pm - 6:41 pm
TYS
-
HOU
2h 11mnonstop
Allegiant Air Logo
7:39 pm - 10:48 pm
HOU
-
TYS
2h 09mnonstop
$90Allegiant Air
월, 6월 15 - 금, 6월 19
Allegiant Air Logo
5:30 pm - 6:41 pm
TYS
-
HOU
2h 11mnonstop
Allegiant Air Logo
7:44 pm - 10:53 pm
HOU
-
TYS
2h 09mnonstop
$91Allegiant Air
목, 5월 14 - 월, 6월 1
Multiple Airlines Logo
11:27 am - 1:11 pm
TYS
-
IAD
1h 44mnonstop
Multiple Airlines Logo
6:22 pm - 4:15 pm
IAD
-
TYS
21h 53m
1 stop
$116Multiple Airlines
목, 5월 7 - 월, 5월 11
Multiple Airlines Logo
11:27 am - 1:11 pm
TYS
-
IAD
1h 44mnonstop
Multiple Airlines Logo
7:27 pm - 9:40 am
IAD
-
TYS
14h 13m
1 stop
$127Multiple Airlines
금, 6월 5 - 금, 6월 12
Frontier Logo
8:32 pm - 10:02 pm
TYS
-
DEN
3h 30mnonstop
Frontier Logo
2:46 pm - 7:37 pm
DEN
-
TYS
2h 51mnonstop
$148Frontier
월, 6월 8 - 수, 6월 10
Frontier Logo
8:32 pm - 10:02 pm
TYS
-
DEN
3h 30mnonstop
Frontier Logo
2:46 pm - 7:37 pm
DEN
-
TYS
2h 51mnonstop
$165Frontier
수, 5월 20 - 수, 5월 27
American Airlines Logo
6:54 pm - 8:29 pm
TYS
-
DFW
2h 35mnonstop
American Airlines Logo
9:50 am - 1:02 pm
DFW
-
TYS
2h 12mnonstop
$177American Airlines
수, 5월 20 - 수, 5월 27
Delta Logo
7:33 pm - 12:12 am
TYS
-
DFW
5h 39m
1 stop
Delta Logo
8:20 am - 2:33 pm
DFW
-
TYS
5h 13m
1 stop
$197Delta
수, 5월 27 - 월, 6월 1
American Airlines Logo
5:36 am - 7:10 am
TYS
-
DFW
2h 34mnonstop
American Airlines Logo
8:43 pm - 11:56 pm
DFW
-
TYS
2h 13mnonstop
$203American Airlines
월, 9월 14 - 토, 9월 19
Delta Logo
7:20 pm - 11:57 pm
TYS
-
ORD
5h 37m
1 stop
Delta Logo
1:15 pm - 6:17 pm
ORD
-
TYS
4h 02m
1 stop
$213Delta
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 $95 round-trip. The most popular route is from Knoxville (TYS) to Dallas/Fort Worth Airport (DFW), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $274.

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

The average price for all round-trip flights from Knoxville to the United States depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United States is generally in the morning, when round-trip flights cost $312 on average. Morning departures are around 21% 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 $393.

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 $305, 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 June, when tickets cost $244 (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 $439 respectively.

Good to know

Low seasonFebruary
Cheapest flight$31
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Knoxville to Washington Dulles Airport

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.

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 $234 one-way - $403 round-trip; Dallas $226 one-way - $417 round-trip; Chicago $201 one-way - $383 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.
8.0
SouthwestOverall score based on 4331 reviews
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
8.1Boarding
Airline reviews

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

4.0 OkayDavid, Apr 2026
COS - DAL
Read more Southwest reviews

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

The seat was not comfortable. 1D. My back was sore all night and the next day.

Great flight. I didn't get a drink because I was asleep whole on the flight.

Great flight from Seattle to Phoenix and to Chicago-Midway from Phoenix

The new boarding process was easy and straightforward. Very pleasant.

The flight was okay. The pilots did an amazing job and kept us updated on the flight. The flight attendants were okay. They found time to be chatty with each other rather than focus on the guests. One of the attendants was a little less warm when asking about my bag I had on my lap that I was using during latter part of the mid- flight. Mind you, it was not the departure descent. I’m respectful to each and every attendant, it was the tone in her voice reminding me to place my carryon bag on the floor. I hope to have a better experience next time.

The entire travel day was a disaster from beginning to end. Woke up at two in the morning to make it to San Juan airport in time for a 5:30 am flight to Milwaukee which connected in Baltimore. Massive delays lead to me missing original connection out of Baltimore. Sixteen hours of delays/rebooking/layover time later, arrived in Milwaukee to find that only one of two checked bags made it there (despite the fact that Southwest brought another 737 jet to San Juan to fly us out to our original Baltimore connection—-not squeezed into another booked flight). The flight from Baltimore to Milwaukee was barely half full, so there was no logical reason to ship my bags out of Baltimore on a different flight to Chicago to then ship to Milwaukee. Southwest decided that my bags should not have been on the same connecting flight I WAS ON to Milwaukee, and then proceeded to accidentally leave my larger bag with the important items in Chicago. Terrible logic and support all around. Extremely angered and disappointed with SW. What a clownish operation your company has become!

It was as expected and I was grateful for the wheel chair help and ease of use.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

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.

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

The crew was very kind, but no in-flight entertainment monitors and a 2 hour and 30 minute delay was extremely frustrating.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

Got home at 3am after deboarding the plane. No compensation offered by American

Delayed flight. Missed connection, AA put us on a later connecting flight. The connection flight was delayed 4 times and we had to deplane. Didnt get home until 3am, when I was supposed to be home at 8:30p. Zero compensation offered from American. I would not fly them again.

The seats need better cushioning for a nearly 5-hour flight, it was a bit uncomfortable. I'm glad American has free wi-fi but there were was a bout 30 minutes in the middle of the flight when there was no connection which was frustrating.

My original flight got delayed day of so I had to rebook it from one layover to two layovers. The flight also left earlier which was a slight inconvenience but manageable. Then my first connection flight got delayed 3 separate times for a total of 2 hours delayed, causing me to miss my second connection flight back to Santa Barbara. Now, because of this missed flight, I am missing my college classes that I pay for.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

Everything you need to know for your flight from Knoxville to the United States

Information on your arrival and departure airports