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San Juan

$120+ Cheap flights from Knoxville (TYS) to San Juan

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Knoxville to San Juan

Cheapest flights from Knoxville to San Juan
Explore the most affordable flight options available from Knoxville to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/25. 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.
Mon 12/295:46 pmTYS - SJU
1 stop21h 13mMultiple Airlines
Wed 12/3110:08 amSJU - TYS
1 stop13h 43mMultiple Airlines
Deal found 12/25$489
This Kiwi.com deal was found by Cheapflights users on 12/26. 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 12/296:00 amTYS - SJU
1 stop8h 59mMultiple Airlines
Fri 1/25:23 pmSJU - TYS
1 stop28h 48mMultiple Airlines
Deal found 12/26$583
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Tue 12/306:33 pmTYS - SJU
1 stop26h 32mMultiple Airlines
Thu 1/11:21 pmSJU - TYS
2 stops20h 12mMultiple Airlines
Deal found 12/26$612
This Kiwi.com deal was found by Cheapflights users on 12/27. 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.
Wed 12/3111:08 amTYS - SJU
1 stop9h 57mMultiple Airlines
Fri 1/27:10 amSJU - TYS
1 stop29h 45mMultiple Airlines
Deal found 12/27$631
This Kiwi.com deal was found by Cheapflights users on 12/26. 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 12/2812:31 pmTYS - SJU
2 stops35h 23mMultiple Airlines
Thu 1/16:00 amSJU - TYS
1 stop29h 15mMultiple Airlines
Deal found 12/26$643

Find flight deals from Knoxville to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 28, 2025.

Round-trip from

$198
(Kiwi.com)

One-way from

$120
(eDestinos)

Popular in

December

Cheapest in

February

Average price

$702
From Knoxville McGhee Tyson to San Juan
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One-way flight from Knoxville McGhee Tyson to San Juan
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Highest demand for flights based on searches. 7% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to San Juan 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 December 28, 2025.
Use the filters below to find and compare flights from Knoxville to San Juan that are best for you.

Fly from

Knoxville

Fly to

San Juan

Route

Depart

Return

Price

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 1/11

1:39 pm-12:13 am

1 stop9h 34m

San Juan Luis Munoz Marin Intl

Wed 1/14

7:34 pm-5:53 pm

2 stops23h 19m

$236

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 1/11

1:39 pm-12:13 am

1 stop9h 34m

San Juan Luis Munoz Marin Intl

Tue 1/13

4:35 pm-3:57 pm

2 stops24h 22m

$267

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/10

11:59 am-11:44 pm

1 stop10h 45m

San Juan Luis Munoz Marin Intl

Thu 1/29

12:55 pm-11:05 pm

2 stops11h 10m

$303

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 1/9

8:30 am-11:44 pm

1 stop14h 14m

San Juan Luis Munoz Marin Intl

Sun 1/25

2:59 am-5:28 pm

2 stops15h 29m

$305

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/10

11:59 am-11:44 pm

1 stop10h 45m

San Juan Luis Munoz Marin Intl

Fri 1/30

4:26 pm-11:09 am

2 stops19h 43m

$309

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/10

11:59 am-11:44 pm

1 stop10h 45m

San Juan Luis Munoz Marin Intl

Wed 1/28

4:40 pm-8:39 am

1 stop16h 59m

$323

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 4/1

8:30 am-2:59 pm

1 stop6h 29m

San Juan Luis Munoz Marin Intl

Fri 4/10

6:00 am-5:30 pm

1 stop11h 30m

$347

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 4/1

8:30 am-8:11 pm

1 stop11h 41m

San Juan Luis Munoz Marin Intl

Wed 4/8

4:06 pm-11:35 am

2 stops19h 29m

$349

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 2/2

7:15 am-4:22 pm

1 stop8h 07m

San Juan Luis Munoz Marin Intl

Tue 2/10

4:11 pm-10:08 am

2 stops18h 57m

$361

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 2/25

5:00 pm-11:58 pm

1 stop5h 58m

San Juan Luis Munoz Marin Intl

Sat 3/7

6:37 pm-11:52 pm

1 stop6h 15m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 14 results
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Best time to book a flight from Knoxville to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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 San Juan

How far ahead should I book a flight from Knoxville to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to San Juan. Price data was last updated on December 19, 2025.

To ensure you get the cheapest price possible for a flight from Knoxville to San Juan, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Knoxville to San Juan?

Currently, August is the cheapest month in which you can book a flight from Knoxville to San Juan (average of $108). Flying from Knoxville to San Juan in May is currently the most expensive (average of $346). 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 San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated December 28, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Knoxville to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,019 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.9

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
8,019 reviews
Delta
7.9
Good
8,019 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.9

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
9,113 reviews
Delta
7.9
Good
8,019 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.9

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
11,072 reviews
Delta
7.9
Good
8,019 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Overall

7.9

Boarding

8.1

Entertainment

7.9

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 San Juan. 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 San Juan?

    If you book a flight to San Juan from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 0 flights from McGhee Tyson to San Juan per day from 3 different airlines.

  • What are the cheapest airlines flying from Knoxville to San Juan round-trip?

    Currently priced at $335, Delta will fly you from Knoxville to San Juan and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $365 and $435, respectively. These flights start at 37% lower than the current average price 3 months from now.

  • Can I find deals for flights from Knoxville to San Juan that include hotel bookings?

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

  • How can I find direct flights from Knoxville to San Juan?

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

  • Can I find deals for business class flights from Knoxville to San Juan?

    Yes. Cheapflights offers flight deals from Knoxville to San Juan 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 San Juan?

    Currently, August is the cheapest month in which you can book a flight from Knoxville to San Juan (average of $108). Flying from Knoxville to San Juan in May is currently the most expensive (average of $346). 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 3 airlines flying from Knoxville to San Juan

Discover the top 3 airlines that operate flights from Knoxville to San Juan. 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$335Average$518FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$365Average$548FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$435Average$635FlexibilityNo cancel feeOn-time69%

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