Puerto Rico

$169+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Apr 14 — Apr 211
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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 15, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Tue 4/72:56 pm
TYS
-
SJU
1 stop27h 59m
Multiple Airlines
Tue 4/147:54 pm
SJU
-
TYS
1 stop14h 42m
Multiple Airlines
Deal found 3/15$295
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/136:20 pm
TYS
-
SJU
1 stop14h 33m
Multiple Airlines
Mon 4/207:01 pm
SJU
-
TYS
1 stop14h 39m
Multiple Airlines
Deal found 3/12$313
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/105:39 pm
TYS
-
SJU
1 stop16h 31m
Multiple Airlines
Tue 4/147:54 pm
SJU
-
TYS
1 stop14h 42m
Multiple Airlines
Deal found 3/12$320
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/1611:27 am
TYS
-
SJU
2 stops22h 27m
Multiple Airlines
Sun 4/198:27 pm
SJU
-
TYS
1 stop25h 57m
Multiple Airlines
Deal found 3/13$321
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/1211:27 am
TYS
-
SJU
2 stops25h 28m
Multiple Airlines
Sun 4/198:27 pm
SJU
-
TYS
1 stop21h 03m
Multiple Airlines
Deal found 3/13$332
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Tue 5/265:05 pm
TYS
-
SJU
1 stop22h 50m
Multiple Airlines
Wed 6/36:00 am
SJU
-
TYS
1 stop11h 58m
Multiple Airlines
Deal found 3/11$337
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 4/115:57 pm
TYS
-
SJU
1 stop16h 51m
American Airlines
Fri 4/1711:59 pm
SJU
-
TYS
1 stop10h 27m
American Airlines
Deal found 3/10$340

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 15, 2026.

Round-trip from

$295
(Kiwi.com)

One-way from

$169
(Kiwi.com)

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 15, 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 6/4

9:20 pm-3:55 pm

1 stop18h 35m

San Juan Luis Munoz Marin Intl

Thu 6/11

6:10 am-10:16 pm

1 stop16h 06m

$399

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/28

7:10 am-4:55 pm

2 stops9h 45m

San Juan Luis Munoz Marin Intl

Sat 9/5

5:55 am-7:20 pm

1 stop13h 25m

$461

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 4/16

12:15 pm-11:40 pm

2 stops11h 25m

San Juan Luis Munoz Marin Intl

Sat 4/18

6:25 am-6:30 pm

2 stops12h 05m

$468

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 5/13

7:05 am-6:10 pm

2 stops11h 05m

San Juan Luis Munoz Marin Intl

Tue 5/19

8:10 am-8:50 pm

2 stops12h 40m

$468

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 4/12

12:15 pm-11:45 pm

1 stop11h 30m

San Juan Luis Munoz Marin Intl

Sun 4/19

9:45 pm-11:40 am

2 stops13h 55m

$526

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/7

8:25 am-8:05 pm

2 stops11h 40m

San Juan Luis Munoz Marin Intl

Fri 8/14

6:30 am-6:35 pm

2 stops12h 05m

$526

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 6/14

12:45 pm-6:15 pm

1 stop5h 30m

San Juan Luis Munoz Marin Intl

Sat 6/20

7:00 am-4:40 pm

1 stop9h 40m

$536
Quickest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 8/19

10:05 am-4:35 pm

1 stop6h 30m

San Juan Luis Munoz Marin Intl

Fri 8/21

5:45 pm-11:47 pm

1 stop6h 02m

$546

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 4/16

8:05 am-8:00 pm

2 stops11h 55m

San Juan Luis Munoz Marin Intl

Tue 4/21

8:10 am-8:50 pm

2 stops12h 40m

$556

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

Mon 6/8

1:15 pm-10:20 pm

2 stops9h 05m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 18 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 15, 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.

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

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 9h 45m. 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

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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 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$337Average$516FlexibilityNo cancel feeOn-time63%
DeltaCheapest$345Average$529FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$385Average$552FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$435Average$635FlexibilityNo cancel feeOn-time69%

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