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Flight Deals
Book Cheap Knoxville to Puerto Rico Plane Tickets
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Puerto Rico 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 Puerto Rico
Mon, Jan 25 - Sun, Jan 31
9:00 am - 11:00 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
25h 00m1 stop Philadelphia
3:54 am - 1:44 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
10h 50m2 stops Miami Philadelphia
$265Multiple Airlines
Wed, Nov 18 - Wed, Dec 2
6:17 pm - 1:25 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
18h 08m1 stop Fort Lauderdale
6:25 am - 4:19 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
10h 54m1 stop Fort Lauderdale
$306Multiple Airlines
Sat, Jan 30 - Wed, Feb 3
5:01 pm - 12:37 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
18h 36m1 stop Fort Lauderdale
6:00 am - 8:30 amSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
27h 30m1 stop Fort Lauderdale
$309Multiple Airlines
Thu, Dec 3 - Wed, Dec 16
1:00 pm - 12:50 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
10h 50m1 stop Orlando
7:40 am - 4:40 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
10h 00m1 stop Orlando
$451Southwest
Thu, Dec 3 - Wed, Dec 16
2:40 pm - 12:50 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
9h 10m2 stops Dallas Love Field Orlando
12:30 pm - 7:50 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
8h 20m2 stops Orlando Nashville Intl
$451Southwest
Sun, Jan 17 - Fri, Jan 22
5:00 pm - 11:58 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
5h 58m1 stop Atlanta Hartsfield-Jackson
6:30 am - 1:54 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
8h 24m1 stop Atlanta Hartsfield-Jackson
$466Delta
Thu, Dec 3 - Thu, Dec 17
2:40 pm - 12:50 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
9h 10m2 stops Dallas Love Field Orlando
11:20 am - 8:35 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
10h 15m2 stops Orlando Nashville Intl
$466Southwest
Sun, Jan 17 - Fri, Jan 22
5:00 pm - 11:58 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
5h 58m1 stop Atlanta Hartsfield-Jackson
6:30 am - 1:54 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
8h 24m1 stop Atlanta Hartsfield-Jackson
$486Delta
Sun, Dec 13 - Tue, Dec 22
7:35 pm - 9:36 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
13h 01m1 stop Miami
6:26 pm - 9:01 amSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
15h 35m1 stop Charlotte Douglas
$582American Airlines
Sun, Jan 17 - Fri, Jan 22
6:14 am - 6:03 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
10h 49m2 stops Charlotte Douglas Miami
10:00 am - 6:15 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
9h 15m1 stop Dallas/Fort Worth
$588American Airlines
Recent one-way flight deals from Knoxville to Puerto Rico
Wed, Feb 17
5:09 pm - 12:37 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
18h 28m1 stop Fort Lauderdale
$185Multiple Airlines
Mon, Dec 14
1:58 pm - 1:58 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
35h 00m3 stops Philadelphia Atlanta Hartsfield-Jackson Miami
$187Multiple Airlines
Thu, Dec 10
9:00 pm - 8:37 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
22h 37m1 stop Fort Lauderdale
$193Multiple Airlines
Mon, Dec 14
1:58 pm - 2:13 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
35h 15m2 stops Philadelphia Orlando
$205Multiple Airlines
Mon, Dec 14
1:00 pm - 12:50 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
10h 50m1 stop Orlando
$218Southwest
Mon, Dec 14
1:00 pm - 12:50 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
10h 50m1 stop Orlando
$218Southwest
Sat, Dec 12
8:15 am - 8:25 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
11h 10m2 stops Baltimore/Washington Orlando
$248Southwest
Sat, Jan 2
8:02 pm - 11:42 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
14h 40m1 stop Charlotte Douglas
$294American Airlines
Sat, Jan 2
8:02 pm - 11:42 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
14h 40m1 stop Charlotte Douglas
$304American Airlines
Sun, Jan 3
5:15 am - 12:06 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
5h 51m1 stop Miami
$306American Airlines
Recent last minute flight deals from Knoxville to Puerto Rico
Fri, Nov 6 - Sat, Nov 14
10:03 pm - 10:15 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
11h 12m1 stop Orlando Sanford Intl
3:55 pm - 11:23 amSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
20h 28m2 stops Atlanta Hartsfield-Jackson Washington, D.C. Dulles Intl
$405Multiple Airlines
Fri, Nov 6 - Sat, Nov 14
10:03 pm - 10:15 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
11h 12m1 stop Orlando Sanford Intl
11:20 am - 9:00 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
10h 40m1 stop Orlando
$419Multiple Airlines
Tue, Nov 10 - Tue, Nov 24
6:08 pm - 3:19 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
20h 11m1 stop Fort Lauderdale
8:53 am - 10:06 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
14h 13m1 stop Washington, D.C. Dulles Intl
$446Multiple Airlines
Tue, Nov 10 - Tue, Nov 24
6:08 pm - 3:19 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
20h 11m1 stop Fort Lauderdale
2:20 pm - 10:48 amSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
21h 28m2 stops Philadelphia Orlando
$482Multiple Airlines
Tue, Nov 10 - Tue, Nov 24
7:55 am - 10:25 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
13h 30m2 stops Baltimore/Washington Tampa
10:50 am - 10:40 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
12h 50m2 stops Orlando Nashville Intl
$599Southwest
Sat, Nov 7 - Fri, Nov 13
7:16 pm - 9:42 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
13h 26m1 stop Miami
7:05 am - 3:18 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
9h 13m1 stop Charlotte Douglas
$602American Airlines
Fri, Nov 6 - Sat, Nov 14
12:50 pm - 1:10 amTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
11h 20m2 stops Orlando Baltimore/Washington
8:45 am - 7:50 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
12h 05m2 stops Orlando Baltimore/Washington
$664Southwest
Sat, Nov 7 - Fri, Nov 13
6:01 am - 6:05 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
11h 04m2 stops Charlotte Douglas Miami
1:40 pm - 8:20 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
7h 40m1 stop Miami
$732American Airlines
Fri, Nov 6 - Sat, Nov 14
10:33 am - 9:00 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
9h 27m1 stop Chicago O'Hare Intl
8:25 am - 4:59 pmSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
9h 34m1 stop Chicago O'Hare Intl
$739United Airlines
Fri, Nov 6 - Fri, Nov 13
6:45 am - 3:40 pmTYS Knoxville McGhee Tyson-SJU San Juan Luis Munoz Marin Intl
7h 55m1 stop Chicago O'Hare Intl
2:05 am - 10:44 amSJU San Juan Luis Munoz Marin Intl-TYS Knoxville McGhee Tyson
9h 39m1 stop Newark
$742United Airlines
Booking Insights
Price, demand and travel trends for Knoxville to Puerto Rico flights
Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.
Prices
Airlines
More
Are flights from Knoxville to Puerto Rico cheaper or more expensive than last year?
Fares from Knoxville to Puerto Rico are running about the same as they were around this time last year, averaging $538 round-trip.
What are the cheapest fares from Knoxville to Puerto Rico right now?
The cheapest fares from Knoxville to Puerto Rico on KAYAK in the last week were to San Juan Luis Munoz Marin Intl (SJU) from $265 round-trip, and to Aguadilla Borinquen (BQN) from $402 round-trip.
What’s the cheapest month to fly from Knoxville to Puerto Rico?
These monthly figures are based on KAYAK fares from the past 12 months, with extreme outliers removed so each month's typical price is accurate.
September is the cheapest time of year to fly, with average fares of $436. Prices are highest in December, when average flight costs increase to around $705.
When is the best time to book flights from Knoxville to Puerto Rico?
Book your flights 22 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 56% compared to booking last-minute (within 2 weeks of departure).
Which airport in Puerto Rico is the cheapest to fly to from Knoxville?
All flights from Knoxville to Puerto Rico arrive at San Juan Luis Munoz Marin Intl (SJU). On average, round-trip fares are around $537.
What’s the cheapest day to fly from Knoxville to Puerto Rico?
Monday tends to be the cheapest day to fly from Knoxville to Puerto Rico, while Thursday is the most expensive. Fares run about 34% higher that day, based on the past 12 months of KAYAK data.
What are the cheapest airlines to fly with from Knoxville to Puerto Rico?
Fares reflect aggregated pricing data and may not include every trip type.
Looking at KAYAK data from the last 12 months, the cheapest airlines to fly with from Knoxville to Puerto Rico are:
• Delta (avg. price $495)
• Southwest (avg. price $516)
• United Airlines (avg. price $591)
• American Airlines (avg. price $620)
• JetBlue (avg. price $761)
What's the most popular airline to fly with from Knoxville to Puerto Rico?
Drawing on KAYAK data from the past three months, the most popular airlines to fly with from Knoxville to Puerto Rico are:
• American Airlines
• Delta
• Southwest
• United Airlines
What are the most popular flight destinations in Puerto Rico?
San Juan and Aguadilla are the most popular flight destinations in Puerto Rico, based on KAYAK data. San Juan is the clear favorite, making up 98% of that interest.
How many one-stop flights are there from Knoxville to Puerto Rico across the week?
There are typically 6 one-stop flights a day from Knoxville to Puerto Rico (44 a week), with the most operating on Saturday.
Key details for Knoxville to Puerto Rico flights
Low season | October |
|---|---|
High season | April |
Cheapest flight | $185 |
Your Knoxville to Puerto Rico flight questions, answered
Find helpful answers about this route, including flight times, airports, airlines and booking tips.
Your guide to booking Knoxville to Puerto Rico flights
Get tips on when to book, when to fly and what to know before your trip.Reviews of the top 3 airlines serving from Knoxville to Puerto Rico
8.0
SouthwestOverall score based on 4214 reviews
8.6Crew
7.5Entertainment
8.1Boarding
7.0Food
8.0Comfort
Airline reviews
Stop asking fir people to check carry on and then bind are free. Then the wait to get your luggage is ridiculous. This particular flight came with a 45 min wait, after waiting in tarmac waiting for a gate inhaling jet exhaust. And how about those landings?! Do the pilots not know the earth is coming up under the descending plane?! This is the only airline I get sick on. Every. Time.
4.0 OkayVera, Oct 2026
Stop asking fir people to check carry on and then bind are free. Then the wait to get your luggage is ridiculous. This particular flight came with a 45 min wait, after waiting in tarmac waiting for a gate inhaling jet exhaust. And how about those landings?! Do the pilots not know the earth is coming up under the descending plane?! This is the only airline I get sick on. Every. Time.
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
I didn't use the onboard amenities, so it is difficult to comment on those services. Otherwise, the flight from Nashville to Toronto was quite crowded, but the boarding process and the flight itself were perfectly fine.
I Love Delta but one of the flight crew training in courtesy snd hospitality.
The temperature on the flight was unbearably hot and they were unable to serve waters and did t make any adjustments. This impacted us both when leaving, we pushed away from the gate but didn’t taxi for takeoff for awhile then arrived ‘early’ yet were stuck in the plane for longer than we should have been.
My seats are comfortable because I choose to fly in the exit rows and this time upgraded to first class with minimum sky miles. Otherwise, I would not be happy in regular seats or even middle comfort seats. Onboarding on the return flight from Nashville to Atlanta was hot and very uncomfortable for over 30 minutes due to extreme hot weather. However, Delta should provide some other air flow option as it was almost unbearable until 10 minutes after take-off. First class seats should be equipped with cup holders. Currently, the middle console is used and is flat and prone to spilling drinks.
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."
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 !
Flight attendant, forgot her name, was in front cabin, she was great
The flight was overbooked. And the gate agent basically said that the flight will not leave unless two people came forward to give up their seats. Offered money. Raised the $$ too. But we were there for a while and flight was delayed. When passengers approached the gate agent asking what would happen if no one volunteered- the answer was flight would be cancelled! Ridiculous! It’s American’s fault for overbooking. The service level is going from Bad to worse it seems.
My wife has a scooter and they where supposed to send from departure to destination and had it go to connecting flight,not good.Nobody has knowledge of the scooters or the battery's.
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.
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.
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.
Wheelchair was waiting for me,changed to a better seat which was great as it's hard for me to walk
More options for your flight from Knoxville to Puerto Rico
Complete your trip to Puerto Rico with a hotel stay or car rental
Information on your arrival and departure airports
Cabin class types available on flights to Puerto Rico
Cabin classes available on flights to Puerto Rico. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights from other airports in Knoxville to Puerto Rico
Flights from all airports in Knoxville to Puerto Rico. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights to other popular destinations
The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.