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TYS - SJU

Find cheap flights from Knoxville to San Juan from $139

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 5/12. 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
Thu 5/23
Thu 5/30

Search hundreds of travel sites at once for deals on flights to San Juan

 
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 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
8:57 am - 7:27 pmTYS-SJU
10h 30m1 stop
10:15 pm - 9:57 amSJU-TYS
11h 42m1 stop
$219Frontier
Find Deal
Tue, May 21 - Wed, Jun 5
10:26 pm - 2:00 amTYS-SJU
27h 34m1 stop
8:09 pm - 7:51 amSJU-TYS
11h 42m1 stop
$277Frontier
Find Deal
Tue, Jun 25 - Mon, Jul 15
10:28 am - 11:32 amTYS-SJU
25h 04m2 stops
5:10 am - 5:46 pmSJU-TYS
12h 36m1 stop
Tue, May 21 - Wed, Jun 5
10:28 am - 11:32 amTYS-SJU
25h 04m2 stops
1:59 am - 7:39 pmSJU-TYS
17h 40m2 stops
Tue, May 21 - Tue, Jun 4
7:41 am - 12:22 amTYS-SJU
16h 41m1 stop
3:54 pm - 8:21 amSJU-TYS
16h 27m1 stop
$323American Airlines
Find Deal
Tue, Oct 1 - Tue, Oct 8
5:00 pm - 11:08 pmTYS-SJU
6h 08m1 stop
7:30 am - 2:51 pmSJU-TYS
7h 21m1 stop
$380Delta
Find Deal
Tue, Jun 25 - Wed, Jul 3
7:11 am - 4:15 pmTYS-SJU
9h 04m2 stops
3:54 pm - 8:21 amSJU-TYS
16h 27m1 stop
$384American Airlines
Find Deal
Tue, Oct 1 - Tue, Oct 8
10:12 am - 8:35 pmTYS-SJU
10h 23m1 stop
7:30 am - 2:51 pmSJU-TYS
7h 21m1 stop
$411Delta
Find Deal
Wed, Jun 26 - Wed, Jul 3
7:00 am - 11:57 pmTYS-SJU
16h 57m2 stops
1:05 am - 4:50 pmSJU-TYS
15h 45m2 stops
$555United Airlines
Find Deal
Tue, May 7 - Fri, May 10
5:50 am - 12:50 pmTYS-SJU
7h 00m1 stop
1:05 am - 10:26 amSJU-TYS
9h 21m2 stops
$666United Airlines
Find Deal
Mon, Aug 19 - Thu, Aug 22

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, Monday 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 October, where tickets cost $423 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $959 and $805 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 87 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $139. KAYAK users also found Knoxville to San Juan round-trip flights on Frontier from $219 and on American Airlines from $323.

Good to know

Low season

April

High season

March

Cheapest flight

$139
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 4% 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 $139 for a one-way ticket and $219 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?

    oneworld, SkyTeam, and Star Alliance 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 $571 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 11028 reviews
7.5food
7.9comfort
8.0entertainment
8.6crew
8.2boarding
Airline reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

2.0 MediocreMarisol, Apr 2024DFW - ATL
Read more about Delta reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

The crew, food, and entertainment were all good. But my screen had some sort of bug where if I turned it off, it would turn back on after 2-5 minutes. At full brightness. It made it very hard to get any shut-eye on the overnight flight. Also, the older Boeing plane, while nicely cared for (and no doors fell off 😅👏) doesn't have the nice air quality of newer planes. So I felt a bit greasy by the time we landed in Sweden.

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Ac was broken so we deplaned, waited 2 hours, taxiing for takeoff they said the plane would not fly so we went back to the gate and got a new plane which took another hour. In all a 4 hour delay for an 80 min flight.

Missed the flight because of them and up geting a rental car

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Terrible. Seats are bad and the baggage policy is inconsistent

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

Book cheap flights from Knoxville to San Juan

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Knoxville to San Juan found on KAYAK in the last 72 hours.
5/12Sun
1 stopFrontier
5h 43mTYS-SJU
$139
5/14Tue
1 stopFrontier
25h 50mTYS-SJU
$161
5/13Mon
2 stopsAmerican Airlines
9h 53mTYS-SJU
$266
5/16Thu
1 stopDelta
9h 14mTYS-SJU
$267
5/16Thu
2 stopsAmerican Airlines
9h 39mTYS-SJU
$336
5/12Sun
3 stops
16h 14mTYS-SJU
$359
5/12Sun
2 stopsAmerican Airlines
7h 21mTYS-SJU
$381

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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.
4/25Thu
multi-stopFrontier
15h 37mTYS-SJU
4/27Sat
multi-stopFrontier
10h 47mSJU-TYS
$228
4/25Thu
multi-stopFrontier
15h 37mTYS-SJU
4/26Fri
multi-stopFrontier
27h 43mSJU-TYS
$235
4/27Sat
multi-stop
9h 46mTYS-SJU
5/3Fri
multi-stop
11h 22mSJU-TYS
$462
4/27Sat
multi-stop
17h 10mTYS-SJU
5/3Fri
multi-stop
11h 22mSJU-TYS
$474
4/27Sat
multi-stop
9h 46mTYS-SJU
5/4Sat
multi-stop
17h 26mSJU-TYS
$483
4/25Thu
multi-stop
19h 39mTYS-SJU
4/27Sat
multi-stop
14h 33mSJU-TYS
$488
4/27Sat
multi-stop
17h 10mTYS-SJU
5/4Sat
multi-stop
17h 26mSJU-TYS
$495
4/27Sat
multi-stop
29h 56mTYS-SJU
5/3Fri
multi-stop
11h 22mSJU-TYS
$499
4/27Sat
multi-stop
29h 56mTYS-SJU
5/4Sat
multi-stop
17h 26mSJU-TYS
$520
4/25Thu
multi-stop
10h 30mTYS-SJU
4/27Sat
multi-stop
31h 12mSJU-TYS
$566

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Knoxville - San Juan Flights

Departure:

Knoxville (TYS)United States

Destination:

San Juan (SJU)Puerto Rico

Return flight deals:

San Juan - Knoxville

Cabin classes: