TYS - SJU

$147 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 4/20. 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 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$273
Overall average: $486
Multiple Airlines
Thu 4/16Thu 4/23
TYS - SJU • 1 stop
Cheapest one-way
$147
Overall average: $358
Multiple Airlines
Mon 4/20
TYS - SJU • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Knoxville and San Juan. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $567 (round-trip)
Shortest trip • 6h 14m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 21% compared to booking last minute.
Insights
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When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
+1
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Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
9:32 pm - 7:22 pm
TYS
-
SJU
21h 50m
1 stop
Multiple Airlines Logo
7:45 am - 9:57 pm
SJU
-
TYS
14h 12m
1 stop
$273Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Multiple Airlines Logo
2:56 pm - 6:55 pm
TYS
-
SJU
27h 59m
1 stop
Multiple Airlines Logo
7:54 pm - 10:36 am
SJU
-
TYS
14h 42m
1 stop
$295Multiple Airlines
Tue, Jun 2 - Sun, Jun 7
Multiple Airlines Logo
5:05 pm - 3:55 pm
TYS
-
SJU
22h 50m
1 stop
Multiple Airlines Logo
6:00 am - 4:40 pm
SJU
-
TYS
34h 40m
2 stops
$311Multiple Airlines
Wed, Apr 29 - Thu, May 7
Multiple Airlines Logo
4:25 pm - 7:22 pm
TYS
-
SJU
26h 57m
1 stop
Multiple Airlines Logo
11:00 am - 8:50 pm
SJU
-
TYS
9h 50m
1 stop
$316Multiple Airlines
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
1:36 pm - 3:55 pm
TYS
-
SJU
26h 19m
1 stop
Multiple Airlines Logo
7:00 am - 9:50 pm
SJU
-
TYS
14h 50m
1 stop
$319Multiple Airlines
Mon, Mar 30 - Thu, Apr 2
Multiple Airlines Logo
8:58 am - 6:55 pm
TYS
-
SJU
9h 57m
1 stop
Multiple Airlines Logo
7:54 pm - 8:10 am
SJU
-
TYS
12h 16m
1 stop
$320Multiple Airlines
Sat, Apr 4 - Wed, Apr 8
Multiple Airlines Logo
9:26 am - 11:07 am
TYS
-
SJU
25h 41m
2 stops
Multiple Airlines Logo
7:54 pm - 10:05 pm
SJU
-
TYS
26h 11m
1 stop
$328Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Multiple Airlines Logo
2:56 pm - 8:53 am
TYS
-
SJU
17h 57m
2 stops
Multiple Airlines Logo
7:54 pm - 10:36 am
SJU
-
TYS
14h 42m
1 stop
$331Multiple Airlines
Fri, Apr 10 - Tue, Apr 14
Multiple Airlines Logo
1:15 pm - 8:53 am
TYS
-
SJU
19h 38m
1 stop
Multiple Airlines Logo
7:54 pm - 10:36 am
SJU
-
TYS
14h 42m
1 stop
$333Multiple Airlines
Wed, Apr 29 - Thu, May 7
Multiple Airlines Logo
11:26 am - 7:22 pm
TYS
-
SJU
31h 56m
2 stops
Multiple Airlines Logo
11:00 am - 8:50 pm
SJU
-
TYS
9h 50m
1 stop
$336Multiple 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.

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 September, where tickets cost $436 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $720 and $704 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 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$147
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 8% 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 $147 for a one-way ticket and $273 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, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Knoxville to San Juan are Southwest and Delta. With an average price for the route of $516 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $547 and an overall rating of 7.9.

  • 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 4 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
SouthwestOverall score based on 4324 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
8.6Crew
Airline reviews

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

2.0 MediocreBeth, Mar 2026
MDW - PIT
Read more Southwest reviews

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Business class seats felt very cramped compared to other airlines.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Mostly good. The WiFi wasn’t working so that was not great.

I rated the experience "mediocre" because of the 2 hour delay in take off. This is the 4th flight from DFW on AA where there was a delay and in one of the instances (after 13 delays), the flight was cancelled. I understand weather but for the March 18th flight, there was no weather issue in Dallas or Detroit. I called Concierge Key and they were wonderful, booking me on a later flight in case my flight was cancelled. I have flown with American for many years and never has there been this consistent pattern of delays. Very disappointing.

They put me on an earlier and I got home sooner

Not good. One of my luggage is missing. And until now they can’t find it

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

Really good. I accidentally left my duffel on the plane and the reps were so friendly in retrieving it.

My 9:50AM flight was delayed to 3:40PM "due to incoming aircraft delay". No aircraft is "delayed" that long. Found out once we did board (after several changes in times) that the aircraft had a maintenance issue and we had to wait for another aircraft. Just tell us that. The aircraft we did get was old and the seats need to be updated. I have been traveling for several weeks with AA and you should refresh your entertainment content as frequent flyers have gone through most of your new content. I have Celiac and a shellfish allergy and continue to have struggles with meals on business and first class flights. Please keep this in mind. Sorry - was a long travel day yesterday and a bit cranky this morning with my experience comments. Still an AA fan.

The business steward was absolutely amazing! Smiles and kindness! Wish all AA flights are like this one!

As a first class customer, there was no power the entire flight which limited my ability to work. I find this unacceptable. The first 11 rows on the left side of the plan were out. I was only offered the option to charge my phone which was not the issue because my laptop was out of power. I asked if there was anything that can be done for me, and the answer was, "no". I was not offered any type of compensation for this AA problem which caused me unnecessary stress due to inability to address business issues on an already challenging travel day. Flight attendants tried to reset the power once but that was the extent of their support. Very disappointing for the lack of expected services on a flight. Please contact me with customer focused response to this complaint.

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

Information on your arrival and departure airports