$54 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 7/20. 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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Everything you should know

Cheapest round-trip
$81
Typical prices: $105-$336
Allegiant Air
Fri 8/14Mon 8/17
TYS - HOU • Non-stop
Cheapest one-way
$54
Typical prices: $104-$468
Allegiant Air
Mon 7/20
TYS - HOU • Non-stop
Top airlines
Cheapest • from $81 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines and Allegiant Air. Average duration is 2h 20m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 68% average savings
Most popular
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
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Flight Deals
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Expert advice
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

Fri, Aug 14 - Mon, Aug 17
Allegiant Air Logo
5:54 pm - 7:13 pm
TYS
-
HOU
2h 19mnonstop
Allegiant Air Logo
8:03 pm - 11:12 pm
HOU
-
TYS
2h 09mnonstop
$81Allegiant Air
Mon, Jul 20 - Mon, Jul 27
Allegiant Air Logo
5:32 pm - 6:49 pm
TYS
-
HOU
2h 17mnonstop
Allegiant Air Logo
7:39 pm - 10:48 pm
HOU
-
TYS
2h 09mnonstop
$101Allegiant Air
Mon, Jul 20 - Mon, Jul 27
Allegiant Air Logo
5:32 pm - 6:49 pm
TYS
-
HOU
2h 17mnonstop
Allegiant Air Logo
7:39 pm - 10:48 pm
HOU
-
TYS
2h 09mnonstop
$105Allegiant Air
Fri, Oct 2 - Mon, Oct 5
Allegiant Air Logo
12:57 pm - 2:14 pm
TYS
-
HOU
2h 17mnonstop
Allegiant Air Logo
7:19 pm - 10:23 pm
HOU
-
TYS
2h 04mnonstop
$107Allegiant Air
Fri, Jul 17 - Tue, Jul 21
Southwest Logo
6:40 am - 10:05 am
TYS
-
HOU
4h 25m
1 stop
Southwest Logo
7:45 am - 5:00 pm
HOU
-
TYS
8h 15m
1 stop
$211Southwest
Thu, Jul 16 - Mon, Jul 20
Southwest Logo
6:40 am - 12:00 pm
TYS
-
HOU
6h 20m
2 stops
Southwest Logo
5:05 am - 1:45 pm
HOU
-
TYS
7h 40m
1 stop
$216Southwest
Fri, Jul 17 - Tue, Jul 21
Multiple Airlines Logo
12:40 pm - 7:20 am
TYS
-
IAH
19h 40m
2 stops
Multiple Airlines Logo
8:20 am - 4:10 pm
IAH
-
TYS
6h 50m
1 stop
$224Multiple Airlines
Tue, Jul 14 - Tue, Jul 21
Multiple Airlines Logo
5:00 pm - 2:50 pm
TYS
-
IAH
22h 50m
1 stop
Multiple Airlines Logo
8:20 am - 4:10 pm
IAH
-
TYS
6h 50m
1 stop
$225Multiple Airlines
Thu, Jul 16 - Mon, Jul 20
United Airlines Logo
12:10 pm - 1:32 pm
TYS
-
IAH
2h 22mnonstop
United Airlines Logo
7:50 pm - 11:12 pm
IAH
-
TYS
2h 22mnonstop
$269United Airlines
Sat, Sep 5 - Wed, Sep 16
American Airlines Logo
6:05 pm - 10:22 pm
TYS
-
IAH
5h 17m
1 stop
American Airlines Logo
10:18 am - 4:42 pm
IAH
-
TYS
5h 24m
1 stop
$289American 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.

How much is a round-trip flight from Knoxville to Houston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to Houston departing in August.

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 $52 on the route between Knoxville (TYS) and Houston Hobby Airport (HOU). Over the past month, this route was, on average, 68% 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 Tuesdays 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 October, where tickets cost $48 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is $209 and $209 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 10 weeks before departure, which saves you about 31% 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$54
Flight from Knoxville to Houston Hobby 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 5 days, the lowest price for a flight from Knoxville to Houston was $43 for a one-way ticket and $81 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

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Houston to Knoxville McGhee Tyson

Monday

Allegiant Air,United Airlines

Allegiant Air,United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

Allegiant Air,United Airlines

Allegiant Air,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.
7.8
DeltaOverall score based on 8413 reviews
7.8Comfort
7.8Entertainment
8.1Boarding
8.5Crew
7.2Food
Airline reviews

We sat on the runway for over an hour before departure. That was unwelcome.

6.0 GoodAnonymous, Jun 2026
SEA - SFO
Read more Delta reviews

We sat on the runway for over an hour before departure. That was unwelcome.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

The flight had a delay but I made it to my connection. Flight was smooth overall

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

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.

Flight had mechanical issues and it was delayed 30 mins - some of us boarded and then had to deplane.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

The gate experience at LAX was abysmal (same for the arrival experience two days prior). Despite the LAX -> SAT schedule of two flights daily, our departure gate was at a smaller hub that we had to be bussed to from Terminal 4. Fortunately, I arrived at LAX extra early and had time to spare, but if I had not known, I might have missed my flight. I looked at the LAX airport map in the AA app and there was no indication of the additional boarding process. Lastly the gate area we were bussed to was crowded with limited food and beverage options. On flight, the fight attendant was hospitable and attentive, the flight was smooth, and AA's free (and working) wifi for AA members were all on the positive side.

The flight back to Dallas was delayed, which has happened to me several times with American Airlines. There was no announcement, no update sent out, no compensation offered for the inconvenience.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

Boarding was smooth and seamless and the flight was without incident.

Food is what you expect on a plane. Nothing gluten free. But that is expected. Drinks, apple juice, was fine. Seat, what I expected. Fine.

The flight took off an hour late which made the connection concerning

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

Information on your arrival and departure airports