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Puerto Rico

$172+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$303
(Mytrip)

One-way from

$172
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$559
From Knoxville McGhee Tyson to Puerto Rico
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One-way flight from Knoxville McGhee Tyson to Puerto Rico
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Highest demand for flights based on searches. 9% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/108:54 pmTYS - SJU
1 stop24h 15mMultiple Airlines
Thu 7/1710:14 pmSJU - TYS
1 stop9h 48mMultiple Airlines
Deal found 6/10$303
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amTYS - SJU
1 stop12h 14mAmerican Airlines
Wed 9/241:36 pmSJU - TYS
1 stop10h 09mAmerican Airlines
Deal found 6/11$365
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:26 pmTYS - SJU
2 stops17h 49mFrontier
Thu 10/91:11 amSJU - TYS
2 stops18h 26mFrontier
Deal found 6/10$475
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:00 amTYS - SJU
1 stop7h 40mUnited Airlines
Fri 10/311:05 amSJU - TYS
2 stops12h 12mUnited Airlines
Deal found 6/11$526
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/114:11 pmTYS - SJU
1 stop6h 37mDelta
Sun 6/157:30 amSJU - TYS
1 stop7h 45mDelta
Deal found 6/11$650

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 June 12, 2025.
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 7/10

8:54 pm-9:09 pm

1 stop24h 15m

San Juan Luis Munoz Marin Intl

Thu 7/17

10:14 pm-8:02 am

1 stop9h 48m

$303

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 9/16

6:00 am-6:14 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Wed 9/24

1:36 pm-11:45 pm

1 stop10h 09m

$365

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 10/5

8:26 pm-2:15 pm

2 stops17h 49m

San Juan Luis Munoz Marin Intl

Thu 10/9

1:11 am-7:37 pm

2 stops18h 26m

$475

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 10/30

7:00 am-2:40 pm

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Fri 10/31

1:05 am-1:17 pm

2 stops12h 12m

$526

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 7/7

6:00 am-7:19 pm

2 stops37h 19m

$172

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 7/8

5:58 pm-12:27 am

1 stop6h 29m

$233

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 8/4

5:45 am-12:34 pm

1 stop6h 49m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, September is the cheapest month in which you can book a flight from Knoxville to Puerto Rico (average of $254). Flying from Knoxville to Puerto Rico in June is currently the most expensive (average of $339). 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.

What is the cheapest time of day to fly from TYS to PR?

Find hourly flight availability from Knoxville to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Knoxville to Puerto Rico as you normally would.

Rainfall in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Puerto Rico ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit Puerto Rico when rainfall is around 2.2 in.

Temperature in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Puerto Rico, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines and Frontier from Knoxville to Puerto Rico to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Frontier
6.0
Okay
3,295 reviews
United Airlines
7.4
Good
8,790 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • 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, September is the cheapest month in which you can book a flight from Knoxville to Puerto Rico (average of $254). Flying from Knoxville to Puerto Rico in June is currently the most expensive (average of $339). 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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Alternative routes for Knoxville to Puerto Rico

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$294Average$456FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$310Average$522FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$361Average$559FlexibilityNo cancel feeOn-time71%

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