Puerto Rico

$146+ Cheap flights from Knoxville (TYS) to Puerto Rico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Apr 26 — May 31
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Cheap flight deals from Knoxville to Puerto Rico

Cheapest flights from Knoxville to Puerto Rico
Explore the most affordable flight options available from Knoxville to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:40 pm
TYS
-
SJU
1 stop19h 36m
Multiple Airlines
Sat 5/235:15 pm
SJU
-
TYS
2 stops27h 14m
Multiple Airlines
Deal found 3/25$279
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:32 pm
TYS
-
SJU
1 stop15h 01m
Multiple Airlines
Wed 4/2912:57 pm
SJU
-
TYS
1 stop25h 53m
Multiple Airlines
Deal found 3/25$281
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:32 pm
TYS
-
SJU
1 stop14h 51m
Multiple Airlines
Sat 4/253:21 am
SJU
-
TYS
2 stops12h 20m
Multiple Airlines
Deal found 3/25$289
This American Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:34 pm
TYS
-
SJU
1 stop14h 05m
American Airlines
Mon 6/112:44 am
SJU
-
TYS
1 stop12h 18m
American Airlines
Deal found 3/23$292
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:40 pm
TYS
-
SJU
1 stop19h 36m
Multiple Airlines
Wed 5/207:30 am
SJU
-
TYS
2 stops37h 26m
Multiple Airlines
Deal found 3/24$297
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/119:00 am
TYS
-
SJU
1 stop25h 10m
Multiple Airlines
Sat 4/183:47 pm
SJU
-
TYS
2 stops23h 54m
Multiple Airlines
Deal found 3/24$302
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:30 am
TYS
-
SJU
1 stop11h 52m
Multiple Airlines
Thu 5/77:00 am
SJU
-
TYS
1 stop15h 20m
Multiple Airlines
Deal found 3/25$310
This Kiwi.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/812:49 pm
TYS
-
SJU
2 stops13h 19m
Multiple Airlines
Fri 6/126:00 am
SJU
-
TYS
1 stop26h 35m
Multiple Airlines
Deal found 3/26$312
This Kiwi.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/109:40 pm
TYS
-
SJU
1 stop19h 36m
Multiple Airlines
Sat 5/166:00 am
SJU
-
TYS
2 stops33h 41m
Multiple Airlines
Deal found 3/26$317

Find flight deals from Knoxville to Puerto Rico

Keep the following information in mind while searching for Knoxville to Puerto Rico flight deals. Data was last updated March 27, 2026.

Round-trip from

$279
(Kiwi.com)

One-way from

$146
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$720
From Knoxville McGhee Tyson to Puerto Rico
One-way flight from Knoxville McGhee Tyson to Puerto Rico
Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Average for round-trip flights in March 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Puerto Rico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
Use the filters below to find and compare flights from Knoxville to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 5/28

3:46 pm-12:54 am

1 stop9h 08m

San Juan Luis Munoz Marin Intl

Wed 6/3

3:58 pm-4:40 pm

2 stops48h 42m

$342

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 4/6

2:06 pm-8:53 am

1 stop18h 47m

San Juan Luis Munoz Marin Intl

Fri 4/10

7:00 am-5:30 pm

1 stop10h 30m

$393

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 5/10

6:40 am-5:05 pm

2 stops10h 25m

San Juan Luis Munoz Marin Intl

Sun 5/17

6:25 am-9:05 pm

2 stops14h 40m

$446

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/28

8:25 am-8:05 pm

2 stops11h 40m

San Juan Luis Munoz Marin Intl

Sat 9/5

5:55 am-7:20 pm

1 stop13h 25m

$456

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 7/21

7:10 am-5:05 pm

2 stops9h 55m

San Juan Luis Munoz Marin Intl

Tue 7/28

9:50 am-9:15 pm

2 stops11h 25m

$476

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 5/15

8:05 am-8:00 pm

2 stops11h 55m

San Juan Luis Munoz Marin Intl

Wed 6/3

5:05 am-5:10 pm

2 stops12h 05m

$521

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 5/28

8:05 am-8:00 pm

2 stops11h 55m

San Juan Luis Munoz Marin Intl

Wed 6/3

5:05 am-5:10 pm

2 stops12h 05m

$541
Quickest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 4/27

7:00 am-2:44 pm

1 stop7h 44m

San Juan Luis Munoz Marin Intl

Thu 4/30

7:20 am-2:34 pm

1 stop7h 14m

$566

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 6/29

6:40 am-5:40 pm

2 stops11h 00m

San Juan Luis Munoz Marin Intl

Fri 7/3

11:35 am-9:10 pm

2 stops9h 35m

$571
Cheapest one-way

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 4/5

7:30 am-7:19 pm

1 stop11h 49m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Knoxville to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to Puerto Rico

What is the cheapest month to book a flight from Knoxville to Puerto Rico?

Currently, August is the cheapest month in which you can book a flight from Knoxville to Puerto Rico (average of $108). Flying from Knoxville to Puerto Rico in March is currently the most expensive (average of $382). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated March 27, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Knoxville to Puerto Rico have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Knoxville to Puerto Rico?

    For a flight from Knoxville to Puerto Rico, you will be flying from McGhee Tyson. Knoxville McGhee Tyson (TYS) is just 11.3 mi from the center of the city.

  • How long is the flight from Knoxville to Puerto Rico?

    Departing from Knoxville to Puerto Rico will take you 10h 25m. Knoxville and Puerto Rico are separated by a distance of 1625 mi.

  • Can I find deals for flights from Knoxville to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Knoxville to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Puerto Rico.

  • Can I find deals for business class flights from Knoxville to Puerto Rico?

    Yes. Cheapflights offers flight deals from Knoxville to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Puerto Rico?

    Currently, August is the cheapest month in which you can book a flight from Knoxville to Puerto Rico (average of $108). Flying from Knoxville to Puerto Rico in March is currently the most expensive (average of $382). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Knoxville to Puerto Rico

Discover the top 4 airlines that operate flights from Knoxville to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$345Average$565FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$376Average$516FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$385Average$551FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$435Average$635FlexibilityNo cancel feeOn-time69%

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