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Puerto Rico

$188+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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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 February 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/266:30 am
TYS
-
SJU
1 stop17h 38m
Multiple Airlines
Wed 3/411:52 am
SJU
-
TYS
2 stops25h 10m
Multiple Airlines
Deal found 2/1$294
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 5/79:40 pm
TYS
-
SJU
1 stop14h 53m
Multiple Airlines
Mon 5/117:00 am
SJU
-
TYS
1 stop10h 30m
Multiple Airlines
Deal found 2/3$301
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 5/181:15 pm
TYS
-
SJU
1 stop8h 54m
Multiple Airlines
Thu 5/287:53 pm
SJU
-
TYS
1 stop20h 47m
Multiple Airlines
Deal found 2/2$308
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 5/193:48 pm
TYS
-
SJU
1 stop16h 59m
Multiple Airlines
Thu 5/287:53 pm
SJU
-
TYS
1 stop20h 47m
Multiple Airlines
Deal found 2/2$324
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 stop14h 53m
Multiple Airlines
Sat 5/163:18 pm
SJU
-
TYS
2 stops24h 23m
Multiple Airlines
Deal found 2/2$334
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 4/213:48 pm
TYS
-
SJU
1 stop10h 13m
Multiple Airlines
Wed 4/297:53 pm
SJU
-
TYS
1 stop19h 48m
Multiple Airlines
Deal found 2/3$339
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 5/181:15 pm
TYS
-
SJU
1 stop8h 54m
Multiple Airlines
Wed 5/273:36 pm
SJU
-
TYS
1 stop20h 37m
Multiple Airlines
Deal found 2/2$340
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 5/111:15 pm
TYS
-
SJU
1 stop8h 54m
Multiple Airlines
Fri 5/157:15 am
SJU
-
TYS
1 stop14h 33m
Multiple Airlines
Deal found 2/2$342
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 5/123:48 pm
TYS
-
SJU
1 stop16h 59m
Multiple Airlines
Wed 5/207:05 pm
SJU
-
TYS
1 stop24h 43m
Multiple Airlines
Deal found 2/2$346
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:50 pm
TYS
-
SJU
1 stop5h 20m
Southwest
Tue 5/195:05 am
SJU
-
TYS
2 stops12h 05m
Southwest
Deal found 2/2$347

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 February 3, 2026.

Round-trip from

$294
(Kiwi.com)

One-way from

$188
(Southwest)

Popular in

December

Cheapest in

February

Average price

$375
From Knoxville McGhee Tyson to Puerto Rico
Search Deals
One-way flight from Knoxville McGhee Tyson to Puerto Rico
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
Use the filters below to find and compare flights from Knoxville to Puerto Rico that are best for you.

Fly from

Knoxville

Fly to

Puerto Rico

Route

Depart

Return

Price

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 2/26

6:30 am-1:08 am

1 stop17h 38m

San Juan Luis Munoz Marin Intl

Wed 3/4

11:52 am-12:02 pm

2 stops25h 10m

$294

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 4/21

3:48 pm-2:01 am

1 stop10h 13m

San Juan Luis Munoz Marin Intl

Wed 4/29

7:53 pm-3:41 pm

1 stop19h 48m

$339

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 4/25

12:56 pm-12:33 pm

1 stop23h 37m

San Juan Luis Munoz Marin Intl

Tue 4/28

3:36 pm-10:36 am

1 stop19h 00m

$357

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 4/22

5:00 am-2:52 pm

2 stops9h 52m

San Juan Luis Munoz Marin Intl

Mon 4/27

11:59 pm-12:30 pm

1 stop12h 31m

$386

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 4/3

7:11 pm-7:56 am

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Sun 4/5

8:47 pm-9:48 pm

1 stop25h 01m

$391

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 4/24

1:15 pm-10:48 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Sun 4/26

3:08 am-5:30 pm

1 stop14h 22m

$396

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 4/21

8:15 am-9:05 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Wed 4/29

5:35 am-7:40 pm

2 stops14h 05m

$412

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 4/12

8:00 am-8:51 pm

1 stop12h 51m

San Juan Luis Munoz Marin Intl

Sun 4/26

11:59 pm-12:30 pm

1 stop12h 31m

$426

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 2/26

2:38 pm-9:12 pm

1 stop5h 34m

San Juan Luis Munoz Marin Intl

Fri 3/6

6:15 am-3:15 pm

1 stop10h 00m

$461

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 4/22

7:05 am-6:10 pm

2 stops11h 05m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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 May is currently the most expensive (average of $343). 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 February 3, 2026.
See what other customers who have flown with Delta, United Airlines, and American 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.
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,138 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,236 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,216 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 52m. 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 May is currently the most expensive (average of $343). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Knoxville to Puerto Rico

Discover the top 3 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$335Average$550FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$385Average$556FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$435Average$635FlexibilityNo cancel feeOn-time69%

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