$99 Find Cheap Flights from Knoxville to Houston

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 Houston departing on 2/25. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Houston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Houston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Houston, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$209
Overall average: $341
United Airlines
Wed 4/15Tue 4/21
TYS - IAH • Non-stop
Cheapest one-way
$99
Typical prices: $368-$384
Multiple Airlines
Wed 2/25
TYS - IAH • 1 stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers extra legroom benefits.
Allegiant's bundling option aids with early boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $209 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
TYS
-
HOU
Cheapest • 54% average savings
TYS
-
IAH
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
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Flight Deals

Cheap Flights from Knoxville to Houston (TYS-HOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Houston 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 Houston

Wed, Apr 15 - Tue, Apr 21
United Airlines Logo
9:00 am - 10:37 am
TYS
-
IAH
2h 37mnonstop
United Airlines Logo
2:55 pm - 6:15 pm
IAH
-
TYS
2h 20mnonstop
$209United Airlines
Thu, Apr 23 - Sun, Apr 26
Frontier Logo
4:28 pm - 12:48 am
TYS
-
IAH
9h 20m
1 stop
Frontier Logo
6:45 am - 3:33 pm
IAH
-
TYS
7h 48m
1 stop
$215Frontier
Fri, May 8 - Mon, May 11
United Airlines Logo
7:05 am - 8:46 am
TYS
-
IAH
2h 41mnonstop
United Airlines Logo
8:24 pm - 11:44 pm
IAH
-
TYS
2h 20mnonstop
$224United Airlines
Thu, Apr 9 - Wed, Apr 15
American Airlines Logo
6:54 pm - 11:47 pm
TYS
-
HOU
5h 53m
1 stop
American Airlines Logo
6:01 am - 12:30 pm
HOU
-
TYS
5h 29m
1 stop
$229American Airlines
Thu, Apr 9 - Wed, Apr 15
Delta Logo
5:40 am - 8:56 am
TYS
-
IAH
4h 16m
1 stop
Delta Logo
9:48 am - 5:08 pm
IAH
-
TYS
6h 20m
1 stop
$229Delta
Wed, Apr 8 - Sat, Apr 11
Southwest Logo
5:50 pm - 10:50 pm
TYS
-
HOU
6h 00m
1 stop
Southwest Logo
10:25 am - 6:30 pm
HOU
-
TYS
7h 05m
2 stops
$234Southwest
Thu, Mar 26 - Mon, Mar 30
Multiple Airlines Logo
1:21 pm - 10:00 pm
TYS
-
IAH
9h 39m
1 stop
Multiple Airlines Logo
8:00 am - 9:47 pm
IAH
-
TYS
12h 47m
1 stop
$247Multiple Airlines
Wed, Apr 15 - Tue, Apr 21
Southwest Logo
5:50 pm - 10:50 pm
TYS
-
HOU
6h 00m
1 stop
Southwest Logo
11:00 am - 8:50 pm
HOU
-
TYS
8h 50m
2 stops
$254Southwest
Wed, Feb 18 - Fri, Feb 20
Multiple Airlines Logo
10:58 am - 7:55 am
TYS
-
IAH
21h 57m
1 stop
Multiple Airlines Logo
9:40 pm - 6:58 pm
IAH
-
TYS
20h 18m
1 stop
$256Multiple Airlines
Thu, Apr 23 - Sun, Apr 26
American Airlines Logo
6:54 pm - 11:47 pm
TYS
-
HOU
5h 53m
1 stop
American Airlines Logo
6:01 am - 12:30 pm
HOU
-
TYS
5h 29m
1 stop
$268American Airlines
Booking Insights

KAYAK's insights & trends for Knoxville to Houston flights

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

What is the cheapest Knoxville to Houston flight route?

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

The cheapest return flight from Knoxville to Houston costs $61 on the route between Knoxville (TYS) and Houston Hobby Airport (HOU). Over the past month, this route was, on average, 54% cheaper than other Knoxville-Houston routes. The most popular route is between Knoxville (TYS) and Houston George Bush Intcntl Airport (IAH).

What’s the cheapest day of the week to fly from Knoxville to Houston?

The average price of all round-trip flights from Knoxville to Houston clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Houston on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Knoxville to Houston. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Knoxville to Houston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Houston, 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 Houston is August, where tickets cost $237 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $468 and $359 respectively.

How far in advance should I book a flight from Knoxville to Houston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to Houston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Knoxville to Houston, you should book around 3 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

Expert advice for your flight from Knoxville to Houston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Daniel Scheffler

Daniel Scheffler

Expert on Allegiant Air

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Good to know

Cheapest flight$99
Flight from Knoxville to Houston George Bush Airport

When to book flights from Knoxville to Houston

Are your dates flexible? Find out the best times to travel from Knoxville to Houston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Knoxville to Houston

  • What is the cheapest flight from Knoxville to Houston?

    In the last 3 days, the lowest price for a flight from Knoxville to Houston was $99 for a one-way ticket and $209 for a round-trip.

  • Do I need a passport to fly between Knoxville and Houston?

    A passport is required to fly from Knoxville to Houston.

  • Which airports will I be using when flying from Knoxville to Houston?

    On your way to Houston, you’ll fly out from Knoxville McGhee Tyson. You’ll be landing in one of Houston’s 2 airports: Houston Hobby or Houston George Bush Intcntl.

  • Which aircraft models fly most regularly from Knoxville to Houston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Knoxville to Houston?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Knoxville and Houston, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Knoxville to Houston?

    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 Houston.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston from Knoxville 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 Houston?

    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 to Houston with an airline and back to Knoxville with another airline.

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

    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 to Houston from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Knoxville to Houston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Knoxville McGhee Tyson to Houston.
Find which airlines fly direct from Knoxville McGhee Tyson Airport to Houston, which days they fly and book direct flights.

Direct departures

Knoxville McGhee Tyson to Houston

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Houston to Knoxville McGhee Tyson

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Knoxville to Houston

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Houston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to Houston? 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 8130 reviews
8.5Crew
7.8Entertainment
7.9Comfort
7.2Food
8.1Boarding
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

Delayed, toilets did not flush, pilot parked to far away from Gate

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Even though we were delayed, we were able to make our connection

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

They made me pay $40 to check a bag that was listed as free when I bought my ticket. Then before boarding they offered to check any bags free.

The seats from lax to DFW was so tight that I could not move my legs . No WiFi and had to pay . Not a good selection of entertainment

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

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.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Crew was great. No entertainment and food and beverage was for purchase only, even water

Everything you need to know for your flight from Knoxville to Houston

Information on your arrival and departure airports