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Find cheap flights from Knoxville to Puerto Rico from $135

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 Puerto Rico departing on 7/9. 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
0 bags
Sat 6/22
Sat 6/29

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Good to know

Low season

July

High season

January

Cheapest flight

$135
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Knoxville to San Juan

FAQs - booking Puerto Rico flights

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

    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 Puerto Rico.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Puerto Rico 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 Puerto Rico?

    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 Puerto Rico 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 Puerto Rico?

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

See more FAQs

Top tips for finding cheap flights to Puerto Rico

  • On average*, there is no price difference when choosing to fly in the morning or the evening on this flight route.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 3 airlines serving from Knoxville to Puerto Rico

 
Need help choosing which airline to fly with from Knoxville to Puerto Rico? 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
DeltaOverall score based on 10561 reviews
8.2Boarding
7.9Comfort
8.0Entertainment
8.6Crew
7.4Food
Airline reviews

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

6.0 GoodPeter, May 2024SLC - HNL
Read more about Delta reviews

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

Delayed so that missed connecting flight. Connecting flight was also delayed on the tarmac but they closed the gate before the rescheduled time.

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Took off over an hour late with multiple mechanical issues. Gate agent in Dallas was lazy and was slow as molasses. Had a line 10 people long. Spirit bad..

The preferred seats where awful. Impossible to use them again

The flight was short. However, my bag was delayed and was put on another flight.

Flight attendant was incredible. Very efficient, friendly and pleasant. Patricia was one of the best I have ever seen. Please give her a big raise!

Delayed multiple times. Boarding was ok but getting off the aircraft was a mess. So disorganized with staff trying to help the elderly but completely blocking path for anyone else to move. Bathroom was disgusting, probably caused by one of the customers but staff couldn't care less to help clean it. No one wanted to use it since the floor was completely soaked so everyone just lined up the other restroom while the staff just chit chat with each other while looking at us.

LIT to DFW - 3 hours late; the entire plane had been boarded before they told us there was a delay due to a weather-related ground stop in Dallas. DFW to MAY - 2+ hours late due to A/C needing to be repaired after everyone had boarded, then when we finally reach the runway, the First Officer timed out and we had to taxi all the way back to the gate and wait for a new one. I arrived in New Orleans 5+ hours later than I should have. Return flights were completely cancelled; rebooked through the app to fly through CLT instead of DFW. MSY to CLT had no issues, but CLT to LIT was delayed 1.25 hrs because flight attendants had not arrived to the airport yet. At least they didn’t make us all sit on the plane to wait for them. I should have driven.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in flight WiFi Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay (especially this much) for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a terrible attitude for no reason, nor will they act the way this woman did. Unacceptable.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in-flight WiFi. Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay that much for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a shitty attitude for no reason, nor will they act the way this woman did. Unacceptable.

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Check in online was easy. Seats aren’t very comfortable

Fecal matter in seat back pocket. Presumably from a kids diaper.

Worst airline to travel with. They treat you like a prisoner in a jailhouse barking out orders and threats. Nickle and dime you to the same price or higher than a respectable airline like one of the big 3 . Might as well fly with standard airlines

Well I mean u get what u pay for so 🤷‍♂️

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

I fly Frontier because it’s affordable. I understand that the seats are tight and not the most comfortable…but that’s part of it. The problem with this flight was that there was a group of travelers directly behind me at the back of the plane who were ridiculously loud and obnoxious the entire flight. I’m pretty sure they were drunk and I could periodically smell an odd odor that I believe was one of them using a smokeless vape pen. The stewards had to remind them to keep quiet during the pre-flight instruction, but that was it. They never said another thing to them for the rest of the flight. It was a miserable.

Book cheap flights from Knoxville to Puerto Rico

Recent round-trip flight deals

9/9Mon
2 stops
18h 42mTYS-SJU
9/13Fri
1 stop
16h 05mSJU-TYS
$244
8/22Thu
1 stop
15h 03mTYS-SJU
8/26Mon
1 stop
16h 35mSJU-TYS
$250
6/16Sun
1 stopFrontier
7h 00mTYS-SJU
6/19Wed
1 stopFrontier
11h 42mSJU-TYS
$268
6/10Mon
2 stopsFrontier
16h 20mTYS-SJU
6/15Sat
1 stopFrontier
13h 52mSJU-TYS
$284
8/19Mon
1 stopAmerican Airlines
5h 53mTYS-SJU
8/23Fri
1 stopAmerican Airlines
6h 24mSJU-TYS
$297
9/17Tue
1 stopDelta
8h 59mTYS-SJU
9/27Fri
1 stopDelta
9h 27mSJU-TYS
$298
8/13Tue
1 stopDelta
9h 08mTYS-SJU
8/19Mon
1 stopDelta
8h 51mSJU-TYS
$311
8/19Mon
1 stopAmerican Airlines
7h 54mTYS-SJU
8/23Fri
2 stopsAmerican Airlines
11h 07mSJU-TYS
$379
8/16Fri
1 stopUnited Airlines
6h 39mTYS-SJU
8/16Fri
1 stopUnited Airlines
6h 48mSJU-TYS
$558
8/19Mon
1 stopUnited Airlines
7h 00mTYS-SJU
8/22Thu
2 stopsUnited Airlines
13h 35mSJU-TYS
$594

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Recent one-way flight deals

7/9Tue
1 stopFrontier
9h 59mTYS-SJU
$135
7/9Tue
2 stopsAmerican Airlines
7h 30mTYS-SJU
$231

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Last minute flights from Knoxville to Puerto Rico

Last minute flight, train and bus deals

5/28Tue
multi-stopFrontier
27h 50mTYS-SJU
6/4Tue
multi-stopFrontier
7h 17mSJU-TYS
$457
5/26Sun
multi-stopAmerican Airlines
9h 53mTYS-SJU
5/28Tue
multi-stopAmerican Airlines
5h 56mSJU-TYS
$511
5/28Tue
multi-stop
26h 43mTYS-SJU
6/4Tue
multi-stop
25h 40mSJU-TYS
$596
5/28Tue
multi-stopAmerican Airlines
9h 53mTYS-SJU
6/4Tue
multi-stopAmerican Airlines
7h 43mSJU-TYS
$611
5/28Tue
multi-stopAmerican Airlines
9h 08mTYS-SJU
6/3Mon
multi-stopAmerican Airlines
12h 55mSJU-TYS
$613
5/28Tue
multi-stop
26h 43mTYS-SJU
6/4Tue
multi-stop
31h 17mSJU-TYS
$614
5/26Sun
multi-stopAmerican Airlines
8h 22mTYS-SJU
5/28Tue
multi-stopAmerican Airlines
15h 48mSJU-TYS
$651
5/28Tue
multi-stopUnited Airlines
19h 37mTYS-SJU
6/3Mon
multi-stopUnited Airlines
21h 31mSJU-TYS
$765
5/26Sun
multi-stop
9h 35mTYS-SJU
5/27Mon
multi-stop
16h 11mSJU-TYS
$843
5/26Sun
multi-stop
17h 20mTYS-SJU
5/28Tue
multi-stop
37h 58mSJU-TYS
$870

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Knoxville - Puerto Rico Flights

Departure:

Knoxville (TYS)United States

Return flight deals:

Puerto Rico - Knoxville

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