TYS - SJU

$178 Find Cheap Flights from Knoxville to San Juan

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 San Juan departing on 1/6. 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 San Juan Luis Munoz Marin Intl Airport

 
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
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Everything you should know

Cheapest round-trip
$318
Typical prices: $477-$732
Multiple Airlines
Wed 12/24Thu 1/8
TYS - SJU • 1 stop
Cheapest one-way
$178
Typical prices: $262-$348
Multiple Airlines
Tue 1/6
TYS - SJU • 1 stop
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 7% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 30% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Knoxville to San Juan (TYS-SJU)

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

Wed, Dec 24 - Thu, Jan 8
Multiple Airlines Logo
5:31 pm - 10:05 pm
TYS
-
SJU
27h 34m1 stop
Multiple Airlines Logo
9:04 am - 1:40 pm
SJU
-
TYS
29h 36m1 stop
$318Multiple Airlines
Sat, Jan 3 - Sun, Jan 11
Multiple Airlines Logo
2:23 pm - 1:20 am
TYS
-
SJU
9h 57m1 stop
Multiple Airlines Logo
8:05 pm - 5:28 pm
SJU
-
TYS
22h 23m1 stop
$323Multiple Airlines
Wed, Dec 24 - Thu, Jan 8
Multiple Airlines Logo
5:31 pm - 10:05 pm
TYS
-
SJU
27h 34m1 stop
Multiple Airlines Logo
5:45 am - 5:53 pm
SJU
-
TYS
13h 08m2 stops
$337Multiple Airlines
Tue, Dec 23 - Wed, Jan 7
Multiple Airlines Logo
11:51 am - 12:58 am
TYS
-
SJU
12h 07m1 stop
Multiple Airlines Logo
3:28 pm - 5:53 pm
SJU
-
TYS
27h 25m2 stops
$351Multiple Airlines
Thu, Feb 26 - Fri, Mar 6
American Airlines Logo
6:02 am - 6:08 pm
TYS
-
SJU
11h 06m1 stop
American Airlines Logo
7:00 am - 6:32 pm
SJU
-
TYS
12h 32m1 stop
$365American Airlines
Tue, Dec 30 - Thu, Jan 8
Multiple Airlines Logo
6:33 pm - 10:05 pm
TYS
-
SJU
26h 32m1 stop
Multiple Airlines Logo
9:04 am - 1:40 pm
SJU
-
TYS
29h 36m1 stop
$368Multiple Airlines
Sat, Dec 20 - Tue, Dec 23
Multiple Airlines Logo
9:23 pm - 1:59 pm
TYS
-
SJU
15h 36m1 stop
Multiple Airlines Logo
4:10 am - 4:41 pm
SJU
-
TYS
13h 31m1 stop
$371Multiple Airlines
Mon, Dec 29 - Wed, Jan 7
Multiple Airlines Logo
9:20 pm - 12:29 pm
TYS
-
SJU
14h 09m1 stop
Multiple Airlines Logo
3:28 pm - 5:53 pm
SJU
-
TYS
27h 25m2 stops
$377Multiple Airlines
Sat, Dec 20 - Wed, Dec 24
Multiple Airlines Logo
9:23 pm - 1:59 pm
TYS
-
SJU
15h 36m1 stop
Multiple Airlines Logo
6:28 pm - 10:15 am
SJU
-
TYS
40h 47m2 stops
$382Multiple Airlines
Mon, Dec 29 - Wed, Jan 7
Multiple Airlines Logo
8:43 pm - 12:29 pm
TYS
-
SJU
14h 46m1 stop
Multiple Airlines Logo
8:08 pm - 8:39 am
SJU
-
TYS
13h 31m1 stop
$383Multiple Airlines
Booking Insights

KAYAK's insights & trends for Knoxville to San Juan flights

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.

How much is a round-trip flight from Knoxville to San Juan Luis Munoz Marin Intl Airport?

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 San Juan Luis Munoz Marin Intl Airport departing in December.

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

The average price of all round-trip flights from Knoxville to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.

When flying from Knoxville to San Juan, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Knoxville, you’ll find the best rates on Mondays and the most expensive ones on Sundays.

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 round-trip 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 February, where tickets cost $375 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $684 and $620 respectively.

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

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 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 week.

To get a below average price on the flight from Knoxville to San Juan Luis Munoz Marin Intl Airport, you should book around 4 weeks before departure, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$178
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 3% 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 $178 for a one-way ticket and $318 for a round-trip.

  • 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?

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

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

    The two airlines most popular with KAYAK users for flights from Knoxville to San Juan are Delta and United Airlines. With an average price for the route of $518 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $635 and an overall rating of 7.4.

  • 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.

Reviews of the 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.
7.9
DeltaOverall score based on 8013 reviews
8.5Crew
7.3Food
8.1Boarding
7.9Entertainment
7.9Comfort
Airline reviews

The food is terrible. The staff is wonderful. Comfort is good.

10.0 ExcellentRonda, Dec 2025
JAX - JFK
Read more Delta reviews

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight and crew were great. United didn't inform crew of immigration process which was disappointing!

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

AA delayed the flight for 3 hours and 50 minutes, but delayed the last 2 hours, 30 minutes at a time, so if we knew before, could have stayed at home and worked instead of being at the airport wasting time... The plane's crew was excellent, not their fault.

After arriving in Dallas, the aircraft taxied for an unusually long time and was unable to park at the gate, which caused a significant delay and made me miss my connecting flight. I then had to wait in a very long line to be rebooked, and I was told that no hotel or meal accommodations would be provided. What is even more unacceptable is that my luggage was mishandled and has still not been located. My suitcase contains important medications that I urgently need, and I have been unable to access them due to the airline’s mishandling. This situation has caused me considerable stress and inconvenience, and I need this issue to be resolved immediately.

RIC Staff was not enough. Elderly passengers had to wait 30 minutes to deplane, so we could board and still had to walk as no chairs were provided. And, passenger in front of my seat assignment rammed seat against my legs entire flight time. Was mildly bruised and left thigh still sore.

Liked that it was on time. Staff professional and friendly.

Things were delayed a little. But that didn’t affect my plans. It was fine. I was surprised it was so full thanksgiving day. The crew were friendly and professional.

Everything you need to know for your flight from Knoxville to San Juan

Information on your arrival and departure airports