TYS - SJU

$122 Find Cheap Flights from Knoxville to San Juan - Compare and Save

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 10/17. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$240
Typical prices: $504-$661
Multiple Airlines
Tue 10/27Tue 11/3
TYS - SJU • 1 stop
Cheapest one-way
$122
Typical prices: $258-$308
Multiple Airlines
Sat 10/17
TYS - SJU • 1 stop
Top airlines
Cheapest • from $416 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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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 $571 (round-trip)
Shortest trip • 6h 15m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 32% compared to booking last minute.
Insights
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When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
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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

Tue, Oct 27 - Tue, Nov 3
Multiple Airlines Logo
6:04 pm - 11:38 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
29h 34m1 stop Fort Lauderdale
Multiple Airlines Logo
6:12 pm - 10:05 amSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
16h 53m1 stop Fort Lauderdale
$240Multiple Airlines
Fri, Sep 11 - Wed, Sep 16
Multiple Airlines Logo
1:54 pm - 12:01 amTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
10h 07m1 stop Philadelphia
Multiple Airlines Logo
8:45 am - 10:04 amSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
25h 19m1 stop Fort Lauderdale
$243Multiple Airlines
Mon, Sep 28 - Mon, Nov 2
Multiple Airlines Logo
5:40 pm - 3:17 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
21h 37m1 stop Fort Lauderdale
Multiple Airlines Logo
6:12 pm - 5:14 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
24h 02m1 stop Fort Lauderdale
$245Multiple Airlines
Tue, Nov 10 - Thu, Nov 12
Delta Logo
4:03 pm - 11:13 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
6h 10m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 3:18 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
9h 18m1 stop Atlanta Hartsfield-Jackson
$416Delta
Tue, Nov 10 - Fri, Nov 13
Delta Logo
2:40 pm - 11:13 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
7h 33m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:55 pm - 8:09 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
7h 14m1 stop Atlanta Hartsfield-Jackson
$416Delta
Mon, Nov 9 - Thu, Nov 12
Southwest Logo
12:50 pm - 1:05 amTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
11h 15m2 stops Orlando Baltimore/Washington
Southwest Logo
6:05 am - 3:00 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
9h 55m2 stops Tampa Dallas Love Field
$416Southwest
Tue, Sep 15 - Mon, Sep 21
Southwest Logo
7:00 am - 4:25 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
9h 25m2 stops Nashville Intl Orlando
Southwest Logo
6:30 am - 6:40 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
12h 10m2 stops Orlando Nashville Intl
$416Southwest
Tue, Oct 27 - Tue, Nov 3
Delta Logo
5:40 am - 1:49 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
8h 09m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:15 am - 1:31 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
6h 16m1 stop Atlanta Hartsfield-Jackson
$416Delta
Thu, Oct 22 - Wed, Oct 28
American Airlines Logo
6:00 am - 3:23 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
9h 23m1 stop Dallas/Fort Worth
American Airlines Logo
6:30 am - 5:36 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
11h 06m2 stops Miami Charlotte Douglas
$466American Airlines
Mon, Sep 28 - Mon, Nov 2
American Airlines Logo
6:05 am - 3:40 pmTYS  Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
9h 35m1 stop Miami
American Airlines Logo
3:17 pm - 10:48 pmSJU  San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
8h 31m2 stops Miami Charlotte Douglas
$466American 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 October.

Flight prices are below average for this route right now.

Flights to San Juan Luis Munoz Marin Intl Airport from Knoxville usually cost between $441 and $641 in October.
The lowest price found in the past 5 days was $240 on Multiple Airlines (Oct 27-Nov 3).

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 $456 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is $761 and $650 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 3 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low season

February

Cheapest flight

$122
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 15% increase in price.
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 5 days, the lowest price for a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport was $122 for a one-way ticket and $240 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?

    SkyTeam, 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, 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 $496 and an overall rating of 7.8.

  • 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.

  • Which airlines provide the cheapest flights from Knoxville to San Juan?

    In the past 5 days, the cheapest round-trip tickets from Knoxville to San Juan were found on United Airlines ($416) and Delta ($436).

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.
8.0
SouthwestOverall score based on 4217 reviews
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

I'm glad it wasn't only 75% full because I could get a good seat

8.0 ExcellentBobby, May 2026
Read more Southwest reviews

I'm glad it wasn't only 75% full because I could get a good seat

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

Worst experience I had on Southwest. Still better than most, but the seating was barely tolerable.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

No space for our carryon and needed to check at plane before boarding !

Flight attendants were in a bad mood and we were late

it was great. the crew is exceptional. the flight was on time.

There is consistently no communication/updated time slots in the app on when a flight will board when its delayed, which is the most frustrating as a consumer trying to understand if they need to get food now, or if there is actually a chance for them to eat during their layover. This keeps being my experience with delta and a potential reason to change airlines.

My flight home from Knoxville, TN, included a layover in Atlanta. I boarded the aircraft in Zone 5 and although there was limited overhead space, I was able to put my 'backpack' style roller-bag above my seat. Unfortunately, due to continued bad weather, we had to deplane. There were many people who would have missed their connection, so they rebooked. When we were re-boarding, the gate agent welcomed zone 5 and then made an announcement: All roller-bags for zone 5 passengers and higher will need to be gate checked. I promptly pushed the telescoping handle in and held my bag like a backpack. I was able to bring it on board, which was a relief. Upon entering the aircraft it became apparent that there was easily 40% open overhead space. There were audible signs of angry passengers who felt duped into checking their bags when in fact there were noticeably LESS passengers on the aircraft and TONS of overhead space. I'm not sure what kinds of parameters are used to determine when to cut off roller-bags from being brought on board, but it seemed deceptive and underhanded to have so many people get stuck checking their bags when clearly there was ample room for at least one more zone.

The CRJ-900 was clean but the overhead air vents were broken in our First Class row, making the cabin very hot until about 30 mins into the flight. The flight attendants were both extremely apologetic and accommodating though so that is why I rated the flight as very good. They checked on us many times and truly showed they cared. The snacks for an hour and a half flight could be better. Would be nice if there was a small plated meal over convenient store snacks. WiFi also was not working. And it would be nice if Delta had adjustable headrests on these planes.

I was in Comfort and we didn’t get any drinks, chips or anything! First Class got full service on the flight and Comfort got nothing. Seat was horrible and uncomfortable

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

The tray table was broken and the food was terrible.

It was good. The leg room was not great in Row 1.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

When we checked in my friend and I were sitting seperate. By the time we got to boarding, they automatically switched our seats. I really liked that.

I trust Delta. I travel comfortable. The snacks could improve or could go to something as a little sandwich.

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The plane was broken so we had to change planes.

Uncomfortable seats and flight attendant was rude as she insisted on waking up my husband to ask him if he wanted a drink. When he said that he was sleeping, she replied “without an attitude “. He was seated at 8c

I didn’t like anything, being platinum pro get you absolutely nowhere and does not increase the customer service treatment whatsoever anymore. My flight was canceled and they put me on a flight eight hours later that would’ve got me back in the middle of the night. They could’ve easily move me up to an hour Prior on an earlier flight. My second flight was unreasonable to take, the third flight was also canceled due to mechanical issues like the first flight. I don’t know what’s going on with American, but they are falling apart, after seven flight changes I finally got home, Unreasonable.

This was a horrible American Airlines experience, and it discourages me from flying with them again. It may have stemmed from a mechanical delay, but it appeared that the team was unprepared to respond to the delay. After boarding, we waited an hour before finally taking off. After landing at our destination, we waited an additional hour on the tarmac waiting for a gate (at 8:00pm) to be assigned and cleared. The flight crew did their best, but they were clearly tired and also ready to be done for the day. Because of the delay, I missed a connecting flight. It was a very poor experience.

Airlines must do something with overweight people... Maybe reserve a business class seat for them, or you could pay the consequences if someone overweight seat side by side to you in economy.

Fantastic! If it had not been for a check-in agent in Knoxville I may have not gotten my passes on British Airways. I couldn’t check-in online because British Airways had messed us the info on my tickets to London & Inverness. AA’s was great! British Airways was a continuous series of delays and frustrations.

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

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