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TYS - SJU

$180 Find cheap flights from Knoxville to San Juan

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to San Juan departing on 9/17. 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
Fri 6/14
Fri 6/21

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to San Juan, 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 San Juan, as well as popular online travel agencies
In the last 7 days travelers have searched 42,393,389 times on KAYAK, and here is why:

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Cheap flight deals from Knoxville to San Juan (TYS-SJU)

 
These are the cheapest deals for flights from Knoxville to San Juan currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Knoxville to San Juan

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Knoxville to San Juan.

Recent one-way flight deals from Knoxville to San Juan

Only flying one-way? Below are some of the best one-way flight deals from Knoxville to San Juan found on KAYAK recently.

Recent last minute flight deals from Knoxville to San Juan

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Knoxville to San Juan.

Recent direct flight deals from Knoxville to San Juan

The latest deals for direct flights from Knoxville to San Juan so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Knoxville to San Juan

Find recent round-trip train or bus tickets from Knoxville to San Juan.

All round-trip flight deals to San Juan

The cheapest plane tickets to San Juan found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:04 pm - 11:05 amTYS-SJU
13h 01m1 stop
8:09 pm - 8:04 amSJU-TYS
11h 55m1 stop
$180Frontier
Find Deal
Tue, Sep 17 - Sat, Sep 21
10:26 pm - 8:22 amTYS-SJU
9h 56m1 stop
10:44 am - 9:36 pmSJU-TYS
10h 52m1 stop
$244Frontier
Find Deal
Tue, Jun 11 - Tue, Jun 18
10:27 pm - 8:26 amTYS-SJU
9h 59m1 stop
10:15 pm - 7:51 amSJU-TYS
9h 36m1 stop
$264Frontier
Find Deal
Tue, Jul 9 - Mon, Aug 12
2:30 pm - 10:09 pmTYS-SJU
7h 39m1 stop
5:07 pm - 11:57 pmSJU-TYS
6h 50m1 stop
$298Delta
Find Deal
Mon, Aug 19 - Fri, Aug 23
10:00 am - 12:26 pmTYS-SJU
26h 26m3 stops
4:56 pm - 7:39 pmSJU-TYS
26h 43m2 stops
Tue, Jun 4 - Tue, Jun 18
10:00 am - 7:05 pmTYS-SJU
33h 05m3 stops
4:56 pm - 7:39 pmSJU-TYS
26h 43m2 stops
Tue, Jun 11 - Tue, Jun 18
3:20 pm - 11:54 pmTYS-SJU
8h 34m1 stop
7:00 am - 8:07 pmSJU-TYS
13h 07m1 stop
$355United Airlines
Find Deal
Sat, May 25 - Wed, May 29
5:29 am - 2:46 pmTYS-SJU
9h 17m2 stops
2:09 pm - 9:24 pmSJU-TYS
7h 15m2 stops
$379American Airlines
Find Deal
Tue, Sep 17 - Sat, Sep 21
7:41 am - 12:22 amTYS-SJU
16h 41m1 stop
2:10 am - 2:11 pmSJU-TYS
12h 01m2 stops
$381American Airlines
Find Deal
Thu, Sep 26 - Sat, Sep 28
7:00 am - 3:42 pmTYS-SJU
8h 42m1 stop
1:05 am - 2:40 pmSJU-TYS
13h 35m2 stops
$594United Airlines
Find Deal
Mon, Aug 19 - Thu, Aug 22
5:30 am - 2:44 pmTYS-SJU
9h 14m1 stop
7:30 am - 5:55 pmSJU-TYS
10h 25m1 stop
$729Delta
Find Deal
Sat, May 18 - Tue, May 21
7:00 am - 11:57 pmTYS-SJU
16h 57m2 stops
3:50 pm - 10:16 amSJU-TYS
18h 26m1 stop
$787United Airlines
Find Deal
Sat, May 18 - Tue, May 21
7:00 am - 11:57 pmTYS-SJU
16h 57m2 stops
3:50 pm - 10:41 pmSJU-TYS
30h 51m1 stop
$818United Airlines
Find Deal
Sat, May 18 - Tue, May 21
7:00 am - 3:42 pmTYS-SJU
8h 42m1 stop
1:05 am - 10:26 amSJU-TYS
9h 21m2 stops
$916United Airlines
Find Deal
Sat, May 18 - Mon, May 20
10:51 am - 11:57 pmTYS-SJU
13h 06m2 stops
1:05 am - 10:26 amSJU-TYS
9h 21m2 stops
$988United Airlines
Find Deal
Sat, May 18 - Mon, May 20
10:51 am - 11:57 pmTYS-SJU
13h 06m2 stops
1:05 am - 10:26 amSJU-TYS
9h 21m2 stops
$1,007United Airlines
Find Deal
Sat, May 18 - Mon, May 20
7:00 am - 3:42 pmTYS-SJU
8h 42m1 stop
1:05 am - 10:26 amSJU-TYS
9h 21m2 stops
$1,019United Airlines
Find Deal
Sat, May 18 - Mon, May 20
10:51 am - 11:57 pmTYS-SJU
13h 06m2 stops
7:25 am - 9:08 pmSJU-TYS
13h 43m2 stops
$1,043United Airlines
Find Deal
Sat, May 18 - Tue, May 21

Flights from Knoxville to San Juan - Travel Insights & Trends

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

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

The average price of all flights from Knoxville to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Knoxville to San Juan, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from San Juan, Thursday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from Knoxville to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Knoxville to San Juan Luis Munoz Marin Intl Airport, 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 San Juan Luis Munoz Marin Intl Airport is September, where tickets cost $445 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $769 and $651 respectively.

How far in advance should I book a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Knoxville to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Knoxville to San Juan Luis Munoz Marin Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 31 days before departure.

Good to know

Low season

July

High season

January

Cheapest flight

$180
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Knoxville to San Juan

When to book flights from Knoxville to San Juan

Are your dates flexible? Find out the best times to travel from Knoxville to San Juan 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 Knoxville to San Juan flights

  • What is the cheapest flight from Knoxville to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport was $180 for a round-trip ticket.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Knoxville and on arrival in San Juan.

  • Which aircraft models fly most regularly from Knoxville to San Juan?

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

  • Which airline alliances offer flights from Knoxville to San Juan?

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

  • Which is the best airline for flights from Knoxville to San Juan, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Knoxville to San Juan are Delta and American Airlines. With an average price for the route of $460 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $556 and an overall rating of 7.3.

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

    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 San Juan.

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

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

    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 San Juan with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and SJU can sometimes prove cheaper using this method.

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

    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 San Juan 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 3 airlines serving from Knoxville to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to San Juan. 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 San Juan? 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 10691 reviews
8.0Entertainment
8.2Boarding
8.6Crew
7.4Food
7.9Comfort
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

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.

Liked - nothing. Disliked - delayed 35+ min sitting on the plane. Caused me to miss my connection in Charlotte. American Airlines is the worst US Air Carrier company with atrocious customer service.

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

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.

I checked a bag because it was $5 less than carry on. They managed to lose my bag on a 2.5 hr direct flight! Frontier has no airport staff at baggage claim to help. As soon as I got home around 11 pm I tried to use their online system to file the claim for lost bag - system wouldn't take the # on my baggage claim ticket - said it was not the correct number. Also said that I had not checked a bag, which wasn't true - even my online boarding pass showed that I had checked a bag. Wasted about an hour on that process with no luck. Tried again in the morning - same thing. So tried online chat with Frontier bot - waited 35-40" twice to be connected to a baggage agent and it never happened. Eventually drove to PDX after work and waited 2 hrs for the Frontier ticket agents to arrive prior to the next Frontier flight out of PDX and FINALLY got some help from one of them, to take me to lost luggage area where I was able to retrive my bag. Probably took 4-5 hrs. of my time and endless frustration to get my bag. This was my first -- and LAST -- experience flying Frontier Airlines. Check-in was also extremely difficult and time consuming. The flight itself (and staff) were fine but everything else about the experience was a total disaster! The fact that Frontier literally has NO WAY to connect to a human voice for customer service (in this case for lost luggage) is the WORST!!!!!

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Last minute flights from Knoxville to San Juan

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Knoxville to San Juan that are departing in the next 10 days.
5/18Sat
multi-stopDelta
9h 14mTYS-SJU
5/21Tue
multi-stopDelta
10h 25mSJU-TYS
$729
5/18Sat
multi-stopUnited Airlines
16h 57mTYS-SJU
5/21Tue
multi-stopUnited Airlines
18h 26mSJU-TYS
$787
5/18Sat
multi-stopUnited Airlines
16h 57mTYS-SJU
5/21Tue
multi-stopUnited Airlines
30h 51mSJU-TYS
$818
5/18Sat
multi-stopUnited Airlines
8h 42mTYS-SJU
5/20Mon
multi-stopUnited Airlines
9h 21mSJU-TYS
$916
5/18Sat
multi-stopUnited Airlines
13h 06mTYS-SJU
5/20Mon
multi-stopUnited Airlines
9h 21mSJU-TYS
$988
5/18Sat
multi-stopUnited Airlines
13h 06mTYS-SJU
5/20Mon
multi-stopUnited Airlines
9h 21mSJU-TYS
$1,007
5/18Sat
multi-stopUnited Airlines
8h 42mTYS-SJU
5/20Mon
multi-stopUnited Airlines
9h 21mSJU-TYS
$1,019
5/18Sat
multi-stopUnited Airlines
13h 06mTYS-SJU
5/21Tue
multi-stopUnited Airlines
13h 43mSJU-TYS
$1,043

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Knoxville - San Juan Flights

Departure:

Knoxville (undefined)United States

Destination:

San Juan (SJU)Puerto Rico

Return flight deals:

San Juan - Knoxville

Cabin classes: