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Luis Munoz Marin Intl

$178+ Cheap flights from Knoxville (TYS) to Luis Munoz Marin Intl (SJU)

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to San Juan Luis Munoz Marin Intl are usually found in February or September, booked 37 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Knoxville to Luis Munoz Marin Intl

Cheapest flights from Knoxville to Luis Munoz Marin Intl
Explore the most affordable flight options available from Knoxville to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 9, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/7. 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 1/89:04 amSJU - TYS
1 stop29h 36mMultiple Airlines
Deal found 12/7$368
This Kiwi.com deal was found by Cheapflights users on 12/7. 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 12/299:20 pmTYS - SJU
1 stop14h 09mMultiple Airlines
Wed 1/73:28 pmSJU - TYS
2 stops27h 25mMultiple Airlines
Deal found 12/7$377
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 12/202:53 pmTYS - SJU
2 stops33h 31mMultiple Airlines
Sat 12/277:15 amSJU - TYS
1 stop12h 22mMultiple Airlines
Deal found 12/8$383
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 12/189:08 amTYS - SJU
1 stop11h 57mMultiple Airlines
Tue 12/237:00 amSJU - TYS
2 stops34h 15mMultiple Airlines
Deal found 12/8$391
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 12/106:09 pmTYS - SJU
2 stops28h 16mMultiple Airlines
Fri 12/1211:05 amSJU - TYS
1 stop7h 15mMultiple Airlines
Deal found 12/6$395
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 12/225:38 pmTYS - SJU
1 stop7h 34mMultiple Airlines
Fri 12/266:00 amSJU - TYS
1 stop27h 03mMultiple Airlines
Deal found 12/6$405
This Kiwi.com deal was found by Cheapflights users on 12/7. 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 12/3012:02 pmTYS - SJU
1 stop11h 56mMultiple Airlines
Wed 1/73:28 pmSJU - TYS
2 stops27h 25mMultiple Airlines
Deal found 12/7$422
This Mytrip deal was found by Cheapflights users on 12/7. 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 12/115:12 pmTYS - SJU
2 stops21h 43mMultiple Airlines
Fri 12/124:10 amSJU - TYS
1 stop8h 53mMultiple Airlines
Deal found 12/7$428

Find flight deals from Knoxville to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Luis Munoz Marin Intl (SJU). 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 9, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$287
(Kiwi.com)

One-way from

$178
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$684
Provider with most accurate pricing for Knoxville McGhee Tyson-San Juan Luis Munoz Marin Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-San Juan Luis Munoz Marin Intl flights.
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From Knoxville McGhee Tyson to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from Knoxville McGhee Tyson to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
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 Luis Munoz Marin Intl 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 9, 2025.
Use the filters below to find and compare flights from Knoxville to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Knoxville

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 2/23

7:15 am-4:13 pm

1 stop7h 58m

San Juan Luis Munoz Marin Intl

Sun 3/1

2:29 am-11:36 pm

2 stops22h 07m

$287

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/3

2:23 pm-1:20 am

1 stop9h 57m

San Juan Luis Munoz Marin Intl

Sun 1/11

8:05 pm-5:28 pm

1 stop22h 23m

$323

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

Fri 1/30

8:31 pm-8:39 am

2 stops37h 08m

$333

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 2/27

6:02 am-11:27 pm

1 stop16h 25m

San Juan Luis Munoz Marin Intl

Fri 3/6

7:00 am-6:32 pm

1 stop12h 32m

$365

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 12/30

6:33 pm-10:05 pm

1 stop26h 32m

San Juan Luis Munoz Marin Intl

Thu 1/8

9:04 am-1:40 pm

1 stop29h 36m

$368

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 12/30

6:33 pm-10:05 pm

1 stop26h 32m

San Juan Luis Munoz Marin Intl

Sat 1/10

7:35 am-8:39 am

2 stops26h 04m

$377

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 1/23

6:00 am-10:26 pm

1 stop15h 26m

San Juan Luis Munoz Marin Intl

Mon 1/26

11:38 am-4:54 pm

1 stop6h 16m

$385

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 2/4

4:47 pm-9:47 am

2 stops16h 00m

San Juan Luis Munoz Marin Intl

Sun 2/8

7:10 am-12:05 pm

1 stop29h 55m

$386

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 1/30

12:55 pm-6:49 pm

3 stops28h 54m

San Juan Luis Munoz Marin Intl

Sat 2/14

5:20 am-2:04 pm

1 stop9h 44m

$391

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 1/6

7:22 pm-11:58 am

1 stop15h 36m

$178

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 14 results
1
2

Compare providers for flights from Knoxville to Luis Munoz Marin Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Luis Munoz Marin Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Knoxville-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Knoxville-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Luis Munoz Marin Intl. Price data was last updated on December 5, 2025.

To ensure you get the cheapest price possible for a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport, 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 Luis Munoz Marin Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport (average of $108). Flying from Knoxville to San Juan Luis Munoz Marin Intl Airport 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.

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

Find hourly flight availability from Knoxville to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 9, 2025.

A simple way to save on the total cost of your ticket is to fly from Knoxville to San Juan Luis Munoz Marin Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated December 9, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Knoxville to San Juan Luis Munoz Marin Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

Overall

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

Overall

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
9,089 reviews
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

Overall

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
11,045 reviews
Delta
7.9
Good
8,011 reviews

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

Overall

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 Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl?

    If you book a flight to San Juan Luis Munoz Marin Intl 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 Luis Munoz Marin Intl per day from 3 different airlines.

  • How long is the flight from Knoxville to San Juan Luis Munoz Marin Intl Airport?

    Airlines like American Airlines fly from Knoxville to San Juan Luis Munoz Marin Intl Airport in about 16h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from Knoxville to San Juan Luis Munoz Marin Intl Airport is about 1625 mi.

  • What are the cheapest airlines flying from Knoxville to San Juan Luis Munoz Marin Intl Airport round-trip?

    Delta, at $335, was found to be the cheapest airline from Knoxville to San Juan Luis Munoz Marin Intl Airport.Alternate airlines to your destination round-trip include American Airlines and United Airlines. You may be able to fly from Knoxville to San Juan Luis Munoz Marin Intl Airport for 37% less than the average price by searching for these airlines.

  • Can I find deals for flights from Knoxville to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Knoxville to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from Knoxville to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Knoxville to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport (average of $108). Flying from Knoxville to San Juan Luis Munoz Marin Intl Airport 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

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Humacao
Luquillo
Bayamón

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Alternative routes for Knoxville to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to Luis Munoz Marin Intl flights
Memphis to Luis Munoz Marin Intl flights
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Blountville to Luis Munoz Marin Intl flights

Top 3 airlines flying from Knoxville to Luis Munoz Marin Intl

Discover the top 3 airlines that operate flights from Knoxville to Luis Munoz Marin Intl. 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 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$335Average$495FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$365Average$550FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$435Average$635FlexibilityNo cancel feeOn-time69%

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