HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luis Munoz Marin Intl

$180+ 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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Knoxville to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Fri 8/285:08 pm
TYS
-
SJU
1 stop22h 50m
Multiple Airlines
Sat 9/56:00 am
SJU
-
TYS
1 stop28h 04m
Multiple Airlines
Deal found 5/8$326
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:27 pm
TYS
-
SJU
1 stop26h 06m
Multiple Airlines
Mon 6/17:00 am
SJU
-
TYS
1 stop15h 01m
Multiple Airlines
Deal found 5/10$346
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 9/264:43 pm
TYS
-
SJU
1 stop6h 55m
Multiple Airlines
Sat 10/35:12 pm
SJU
-
TYS
1 stop14h 53m
Multiple Airlines
Deal found 5/8$348
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Fri 7/107:20 pm
TYS
-
SJU
2 stops22h 14m
Multiple Airlines
Mon 8/37:00 am
SJU
-
TYS
1 stop15h 00m
Multiple Airlines
Deal found 5/12$361
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Fri 8/79:26 am
TYS
-
SJU
1 stop6h 39m
Multiple Airlines
Sun 8/96:31 pm
SJU
-
TYS
1 stop28h 13m
Multiple Airlines
Deal found 5/7$372
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:27 pm
TYS
-
SJU
1 stop26h 06m
Multiple Airlines
Fri 6/57:00 am
SJU
-
TYS
1 stop14h 50m
Multiple Airlines
Deal found 5/11$374
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 5/2512:27 pm
TYS
-
SJU
1 stop26h 06m
Multiple Airlines
Thu 6/258:00 am
SJU
-
TYS
2 stops37h 13m
Multiple Airlines
Deal found 5/12$378
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Mon 6/112:27 pm
TYS
-
SJU
1 stop26h 06m
Multiple Airlines
Thu 6/45:15 pm
SJU
-
TYS
2 stops30h 24m
Multiple Airlines
Deal found 5/8$387
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 5/2512:27 pm
TYS
-
SJU
1 stop26h 06m
Multiple Airlines
Fri 6/197:00 am
SJU
-
TYS
1 stop14h 50m
Multiple Airlines
Deal found 5/12$393
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 5/2512:27 pm
TYS
-
SJU
1 stop26h 06m
Multiple Airlines
Wed 6/248:50 am
SJU
-
TYS
2 stops30h 25m
Multiple Airlines
Deal found 5/12$394

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 May 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$326
(Kiwi.com)

One-way from

$180
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$605
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.
Search Deals
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. 5% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 13, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 8/3

4:38 pm-10:29 pm

1 stop5h 51m

San Juan Luis Munoz Marin Intl

Mon 8/10

12:56 pm-8:10 pm

1 stop7h 14m

$436

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 6/9

6:00 am-3:47 pm

1 stop9h 47m

San Juan Luis Munoz Marin Intl

Tue 6/16

10:29 am-11:59 pm

1 stop13h 30m

$476

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 6/25

8:15 am-12:37 am

1 stop16h 22m

San Juan Luis Munoz Marin Intl

Mon 6/29

6:00 am-4:40 pm

2 stops10h 40m

$496

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 5/28

5:40 am-12:01 pm

1 stop6h 21m

San Juan Luis Munoz Marin Intl

Tue 6/2

6:15 am-2:33 pm

1 stop8h 18m

$576

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/7

2:05 pm-11:50 pm

2 stops9h 45m

San Juan Luis Munoz Marin Intl

Sun 8/9

11:35 am-8:45 pm

2 stops9h 10m

$596
Quickest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 7/26

5:40 am-11:46 am

1 stop6h 06m

San Juan Luis Munoz Marin Intl

Fri 7/31

2:42 pm-9:35 pm

1 stop6h 53m

$606

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 7/31

2:20 pm-1:20 am

2 stops11h 00m

San Juan Luis Munoz Marin Intl

Sun 8/2

11:35 am-9:15 pm

2 stops9h 40m

$656

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 6/9

2:45 pm-12:45 am

2 stops10h 00m

San Juan Luis Munoz Marin Intl

Tue 6/16

9:50 am-9:15 pm

2 stops11h 25m

$706
Cheapest one-way

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 7/5

8:15 am-12:41 am

1 stop16h 26m

$181

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 6/1

12:27 pm-2:33 pm

1 stop26h 06m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 13 resultsSorted by cheapest first
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapOairPrice 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?

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 36 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 $406). Flying from Knoxville to San Juan Luis Munoz Marin Intl Airport in March is currently the most expensive (average of $761). 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.

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 May 13, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.
Southwest
7.9
Good
4,296 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
7.9
Good
4,296 reviews
Southwest
7.9
Good
4,296 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,450 reviews
Southwest
7.9
Good
4,296 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,706 reviews
Southwest
7.9
Good
4,296 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,662 reviews
Southwest
7.9
Good
4,296 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 4 different airlines.

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

    Airlines like Delta and American Airlines fly from Knoxville to San Juan Luis Munoz Marin Intl Airport in about 5h 51m. The time it takes to get you to your destination can typically vary by up to 3h 56m. The distance from Knoxville to San Juan Luis Munoz Marin Intl Airport is about 1625 mi. This flight may include one or multiple stops.

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

    Delta, at $345, 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 Southwest 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 $406). Flying from Knoxville to San Juan Luis Munoz Marin Intl Airport in March is currently the most expensive (average of $761). 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
Fajardo
Luquillo
Rio Grande
Dorado
Humacao
Bayamón

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Top 4 airlines flying from Knoxville to Luis Munoz Marin Intl

Discover the top 4 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 May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$345Average$514FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$376Average$516FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$385Average$547FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$460Average$635FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.