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Cheap flights from Knoxville to San Juan from $152

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to San Juan departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Knoxville to San Juan

Cheap round-trip flights

Logo
7:30 am - 8:56 pmTYS-SJU
13h 26m2 stops
Logo
6:44 am - 8:15 pmSJU-TYS
13h 31m1 stop
$334
Find Deal
Tue, Sep 23 - Sat, Sep 27
Logo
8:49 pm - 11:05 amTYS-SJU
38h 16m2 stops
Logo
6:44 am - 5:34 pmSJU-TYS
10h 50m1 stop
$343
Find Deal
Fri, Sep 12 - Fri, Sep 19
Logo
11:25 am - 8:56 pmTYS-SJU
9h 31m1 stop
Logo
6:44 am - 8:41 pmSJU-TYS
13h 57m1 stop
$348
Find Deal
Tue, Sep 23 - Sat, Sep 27
American Airlines Logo
8:24 pm - 11:45 amTYS-SJU
14h 21m1 stop
American Airlines Logo
6:45 am - 3:23 pmSJU-TYS
9h 38m1 stop
$390American Airlines
Find Deal
Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
6:00 am - 2:15 pmTYS-SJU
8h 15m1 stop
American Airlines Logo
1:37 pm - 11:50 pmSJU-TYS
10h 13m1 stop
$405American Airlines
Find Deal
Fri, Sep 26 - Wed, Oct 1
American Airlines Logo
6:30 am - 2:59 pmTYS-SJU
8h 29m1 stop
American Airlines Logo
3:34 pm - 12:23 amSJU-TYS
8h 49m1 stop
$413American Airlines
Find Deal
Thu, Oct 2 - Tue, Oct 7
American Airlines Logo
5:05 am - 2:59 pmTYS-SJU
9h 54m1 stop
American Airlines Logo
1:35 pm - 12:23 amSJU-TYS
10h 48m2 stops
$415American Airlines
Find Deal
Thu, Oct 2 - Tue, Oct 7
United Airlines Logo
7:15 am - 3:42 pmTYS-SJU
8h 27m1 stop
United Airlines Logo
7:00 am - 6:10 pmSJU-TYS
11h 10m1 stop
$455United Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 10
United Airlines Logo
5:45 am - 11:57 pmTYS-SJU
18h 12m2 stops
United Airlines Logo
1:05 am - 2:45 pmSJU-TYS
13h 40m2 stops
$501United Airlines
Find Deal
Tue, Sep 23 - Fri, Sep 26
United Airlines Logo
7:00 am - 11:57 pmTYS-SJU
16h 57m2 stops
United Airlines Logo
7:00 am - 6:10 pmSJU-TYS
11h 10m1 stop
$575United Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 10

United Airlines flights from Knoxville to San Juan Luis Munoz Marin Intl Airport

Our best United Airlines deals on Knoxville to San Juan Luis Munoz Marin Intl Airport flight tickets
United Airlines
Oct 3
TYS7:15 amKnoxville McGhee Tyson
8h 27m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Oct 10
SJU7:00 amSan Juan Luis Munoz Marin Intl
11h 10m
1 stop
TYS6:10 pmKnoxville McGhee Tyson
$455
Find similar
United Airlines
Sep 23
TYS5:45 amKnoxville McGhee Tyson
18h 12m
2 stops
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU1:05 amSan Juan Luis Munoz Marin Intl
13h 40m
2 stops
TYS2:45 pmKnoxville McGhee Tyson
$501
Find similar
United Airlines
Oct 3
TYS7:00 amKnoxville McGhee Tyson
16h 57m
2 stops
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Oct 10
SJU7:00 amSan Juan Luis Munoz Marin Intl
11h 10m
1 stop
TYS6:10 pmKnoxville McGhee Tyson
$575
Find similar

American Airlines flights from Knoxville to San Juan Luis Munoz Marin Intl Airport

Our best American Airlines deals on Knoxville to San Juan Luis Munoz Marin Intl Airport flight tickets
American Airlines
Jan 31
TYS8:24 pmKnoxville McGhee Tyson
14h 21m
1 stop
SJU11:45 amSan Juan Luis Munoz Marin Intl
Feb 7
SJU6:45 amSan Juan Luis Munoz Marin Intl
9h 38m
1 stop
TYS3:23 pmKnoxville McGhee Tyson
$390
Find similar
American Airlines
Sep 26
TYS6:00 amKnoxville McGhee Tyson
8h 15m
1 stop
SJU2:15 pmSan Juan Luis Munoz Marin Intl
Oct 1
SJU1:37 pmSan Juan Luis Munoz Marin Intl
10h 13m
1 stop
TYS11:50 pmKnoxville McGhee Tyson
$405
Find similar
American Airlines
Oct 2
TYS6:30 amKnoxville McGhee Tyson
8h 29m
1 stop
SJU2:59 pmSan Juan Luis Munoz Marin Intl
Oct 7
SJU3:34 pmSan Juan Luis Munoz Marin Intl
8h 49m
1 stop
TYS12:23 amKnoxville McGhee Tyson
$413
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated August 21, 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

Fly to

Route

Depart

Return

Price

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 9/23

7:30 am-8:56 pm

2 stops13h 26m

San Juan Luis Munoz Marin Intl

Sat 9/27

6:44 am-8:15 pm

1 stop13h 31m

$334

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 9/12

8:49 pm-11:05 am

2 stops38h 16m

San Juan Luis Munoz Marin Intl

Fri 9/19

6:44 am-5:34 pm

1 stop10h 50m

$343

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 9/23

11:25 am-8:56 pm

1 stop9h 31m

San Juan Luis Munoz Marin Intl

Sat 9/27

6:44 am-8:41 pm

1 stop13h 57m

$348

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/31

8:24 pm-11:45 am

1 stop14h 21m

San Juan Luis Munoz Marin Intl

Sat 2/7

6:45 am-3:23 pm

1 stop9h 38m

$390

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 9/26

6:00 am-2:15 pm

1 stop8h 15m

San Juan Luis Munoz Marin Intl

Wed 10/1

1:37 pm-11:50 pm

1 stop10h 13m

$405

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 10/2

6:30 am-2:59 pm

1 stop8h 29m

San Juan Luis Munoz Marin Intl

Tue 10/7

3:34 pm-12:23 am

1 stop8h 49m

$413

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 10/2

5:05 am-2:59 pm

1 stop9h 54m

San Juan Luis Munoz Marin Intl

Tue 10/7

1:35 pm-12:23 am

2 stops10h 48m

$415

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 10/3

7:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Fri 10/10

7:00 am-6:10 pm

1 stop11h 10m

$455

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Tue 9/23

5:45 am-11:57 pm

2 stops18h 12m

San Juan Luis Munoz Marin Intl

Fri 9/26

1:05 am-2:45 pm

2 stops13h 40m

$501

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 10/3

7:00 am-11:57 pm

2 stops16h 57m

San Juan Luis Munoz Marin Intl

Fri 10/10

7:00 am-6:10 pm

1 stop11h 10m

$575

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Knoxville to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Knoxville and San Juan Luis Munoz Marin Intl Airport?

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $440.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Knoxville is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $445. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Knoxville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $579.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as $314. Flights at noon are often more expensive with an average ticket price of $562.

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $522 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Knoxville for as low as $384 on momondo.

How have Knoxville to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

When to book flights from Knoxville to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to San Juan Luis Munoz Marin Intl Airport (TYS to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to San Juan Luis Munoz Marin Intl Airport

Direct flights

None
There are no direct flights from Knoxville to San Juan Luis Munoz Marin Intl Airport. There are no popular flight routes from Knoxville to San Juan Luis Munoz Marin Intl Airport.
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  • How far is Knoxville McGhee Tyson to San Juan Luis Munoz Marin Intl by plane?

    Knoxville McGhee Tyson and San Juan Luis Munoz Marin Intl are 1629.5 mi apart from one another. Typically, this will take 5h 28m by plane in normal conditions.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to San Juan Luis Munoz Marin Intl Airport are updated daily.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to San Juan Luis Munoz Marin Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The required travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Knoxville to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Knoxville to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Knoxville to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $324Free CancellationRating
7.9
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $353Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
American AirlinesPriceFrom $378Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Caguas
Humacao
Rio Grande
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to San Juan?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Knoxville to San Juan for you.

Can I find flights from Knoxville to San Juan with flexible booking policies on momondo?

Flights from Knoxville to San Juan with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Knoxville to San Juan?

momondo provides multiple filters to help you find the best flight to San Juan from Knoxville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Knoxville to San Juan right now. Can momondo alert me if prices change?

Price alerts on flights to San Juan from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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