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Luis Munoz Marin Intl

$137+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
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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 89 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$345
(Kiwi.com)

One-way from

$137
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$440
Provider with most accurate pricing for Knoxville McGhee Tyson-San Juan Luis Munoz Marin Intl flight deals.
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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
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One-way flight from Knoxville McGhee Tyson to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 7% potential increase in price ($45 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 September 2025
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Find 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 September 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Sun 10/199:01 pmTYS - SJU
1 stop18h 15mMultiple Airlines
Sun 10/269:06 pmSJU - TYS
2 stops22h 26mMultiple Airlines
Deal found 9/27$356
This American Airlines deal was found by Cheapflights users on 9/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:04 pmTYS - SJU
1 stop16h 09mAmerican Airlines
Tue 11/186:00 amSJU - TYS
1 stop11h 37mAmerican Airlines
Deal found 9/26$365
This Mytrip deal was found by Cheapflights users on 9/28. 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.
Mon 10/2010:46 amTYS - SJU
1 stop16h 05mMultiple Airlines
Tue 10/212:49 amSJU - TYS
1 stop11h 40mMultiple Airlines
Deal found 9/28$370
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/157:15 amTYS - SJU
1 stop18h 47mMultiple Airlines
Tue 10/212:49 amSJU - TYS
2 stops42h 18mMultiple Airlines
Deal found 9/27$375
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 12/412:43 pmTYS - SJU
2 stops29h 38mMultiple Airlines
Mon 12/812:10 pmSJU - TYS
1 stop10h 39mMultiple Airlines
Deal found 9/28$400
This American Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/293:49 pmTYS - SJU
1 stop6h 21mAmerican Airlines
Mon 11/32:47 pmSJU - TYS
1 stop10h 12mAmerican Airlines
Deal found 9/28$405
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Sat 10/184:26 pmTYS - SJU
1 stop18h 30mMultiple Airlines
Sat 10/253:19 pmSJU - TYS
2 stops29h 48mMultiple Airlines
Deal found 9/27$407

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 September 29, 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

Sun 10/19

9:01 pm-3:16 pm

1 stop18h 15m

San Juan Luis Munoz Marin Intl

Sun 10/26

9:06 pm-7:32 pm

2 stops22h 26m

$356

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 12/4

5:03 pm-10:07 am

1 stop16h 04m

San Juan Luis Munoz Marin Intl

Mon 12/8

5:10 pm-11:57 pm

1 stop7h 47m

$365

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 10/20

10:46 am-2:51 am

1 stop16h 05m

San Juan Luis Munoz Marin Intl

Tue 10/21

2:49 am-2:29 pm

1 stop11h 40m

$370

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 11/15

4:56 pm-10:17 am

1 stop16h 21m

San Juan Luis Munoz Marin Intl

Tue 11/18

5:59 pm-9:50 am

1 stop16h 51m

$385

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 11/10

12:01 pm-8:48 pm

1 stop7h 47m

San Juan Luis Munoz Marin Intl

Thu 11/13

4:44 pm-11:51 pm

1 stop8h 07m

$405

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 11/1

4:18 pm-11:55 pm

1 stop7h 37m

San Juan Luis Munoz Marin Intl

Sat 11/8

11:13 am-4:26 pm

1 stop6h 13m

$455

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 10/11

7:10 am-2:12 pm

2 stops31h 02m

San Juan Luis Munoz Marin Intl

Fri 10/17

2:49 am-1:18 pm

3 stops34h 29m

$487

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 10/19

9:01 pm-3:16 pm

1 stop18h 15m

$137

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 10/25

10:53 am-2:59 pm

2 stops28h 06m

$167

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 10/24

7:15 am-2:02 am

1 stop18h 47m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 September 26, 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 89 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, September is the cheapest month in which you can book a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Knoxville to San Juan Luis Munoz Marin Intl Airport 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 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 September 29, 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 45% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Knoxville to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Luis Munoz Marin Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Knoxville to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Knoxville to San Juan Luis Munoz Marin Intl Airport?

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 September 29, 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
8.0
Very good
7,964 reviews

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,964 reviews

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 04m. 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 $334, 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 United Airlines and American Airlines. You may be able to fly from Knoxville to San Juan Luis Munoz Marin Intl Airport for 36% 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, September is the cheapest month in which you can book a flight from Knoxville to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Knoxville to San Juan Luis Munoz Marin Intl Airport 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

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
Luquillo
Humacao

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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
Chattanooga to Luis Munoz Marin Intl flights
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 September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$334Average$502FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$353Average$590FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$373Average$555FlexibilityNo cancel feeOn-time71%

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