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Cheap flights from Knoxville to San Juan from $146

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 4/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Knoxville to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:27 am - 11:58 pm
TYS
-
SJU
36h 31m
2 stops
Multiple Airlines Logo
6:00 am - 2:45 pm
SJU
-
TYS
8h 45m
1 stop
$240Multiple Airlines
Sun, Apr 12 - Thu, Apr 16
Multiple Airlines Logo
12:56 pm - 12:23 pm
TYS
-
SJU
23h 27m
1 stop
Multiple Airlines Logo
3:26 pm - 3:41 pm
SJU
-
TYS
24h 15m
2 stops
$267Multiple Airlines
Sat, Apr 25 - Sat, May 2
Multiple Airlines Logo
5:10 pm - 6:55 pm
TYS
-
SJU
25h 45m
1 stop
Multiple Airlines Logo
6:00 am - 2:45 pm
SJU
-
TYS
8h 45m
1 stop
$269Multiple Airlines
Sun, Apr 12 - Thu, Apr 16
Multiple Airlines Logo
12:56 pm - 12:23 pm
TYS
-
SJU
23h 27m
1 stop
Multiple Airlines Logo
12:57 pm - 2:50 pm
SJU
-
TYS
25h 53m
1 stop
$273Multiple Airlines
Sat, Apr 25 - Sat, May 2
Multiple Airlines Logo
9:40 pm - 5:16 pm
TYS
-
SJU
19h 36m
1 stop
Multiple Airlines Logo
5:15 pm - 8:29 pm
SJU
-
TYS
27h 14m
2 stops
$279Multiple Airlines
Thu, May 14 - Sat, May 23
Multiple Airlines Logo
9:32 pm - 12:33 pm
TYS
-
SJU
15h 01m
1 stop
Multiple Airlines Logo
12:57 pm - 2:50 pm
SJU
-
TYS
25h 53m
1 stop
$281Multiple Airlines
Sun, Apr 26 - Wed, Apr 29
Multiple Airlines Logo
9:32 pm - 12:23 pm
TYS
-
SJU
14h 51m
1 stop
Multiple Airlines Logo
3:21 am - 3:41 pm
SJU
-
TYS
12h 20m
2 stops
$289Multiple Airlines
Thu, Apr 23 - Sat, Apr 25
Multiple Airlines Logo
9:32 pm - 12:23 pm
TYS
-
SJU
14h 51m
1 stop
Multiple Airlines Logo
3:21 am - 3:41 pm
SJU
-
TYS
12h 20m
2 stops
$290Multiple Airlines
Thu, Apr 23 - Sat, Apr 25
Multiple Airlines Logo
9:32 pm - 12:33 pm
TYS
-
SJU
15h 01m
1 stop
Multiple Airlines Logo
3:19 pm - 3:41 pm
SJU
-
TYS
24h 22m
2 stops
$292Multiple Airlines
Sun, Apr 26 - Wed, Apr 29
Multiple Airlines Logo
11:27 am - 2:08 am
TYS
-
SJU
14h 41m
2 stops
Multiple Airlines Logo
7:00 am - 10:01 pm
SJU
-
TYS
15h 01m
1 stop
$296Multiple Airlines
Thu, May 14 - Fri, May 22

Southwest flights from Knoxville to San Juan Luis Munoz Marin Intl Airport

Our best Southwest deals on Knoxville to San Juan Luis Munoz Marin Intl Airport flight tickets
Southwest
Apr 11
TYS6:40 amKnoxville McGhee Tyson
10h 55m
2 stops
SJU5:35 pmSan Juan Luis Munoz Marin Intl
Apr 17
SJU6:50 amSan Juan Luis Munoz Marin Intl
13h 30m
2 stops
TYS8:20 pmKnoxville McGhee Tyson
$586
Southwest
Apr 11
TYS6:40 amKnoxville McGhee Tyson
10h 55m
2 stops
SJU5:35 pmSan Juan Luis Munoz Marin Intl
Apr 15
SJU5:35 amSan Juan Luis Munoz Marin Intl
14h 05m
2 stops
TYS7:40 pmKnoxville McGhee Tyson
$596
Southwest
Apr 1
TYS6:35 amKnoxville McGhee Tyson
12h 55m
2 stops
SJU7:30 pmSan Juan Luis Munoz Marin Intl
Apr 3
SJU1:05 pmSan Juan Luis Munoz Marin Intl
9h 05m
2 stops
TYS10:10 pmKnoxville McGhee Tyson
$656

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
Apr 4
TYS7:05 amKnoxville McGhee Tyson
8h 37m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Apr 11
SJU7:20 amSan Juan Luis Munoz Marin Intl
7h 49m
1 stop
TYS3:09 pmKnoxville McGhee Tyson
$706
United Airlines
Apr 4
TYS7:05 amKnoxville McGhee Tyson
8h 37m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Apr 11
SJU7:20 amSan Juan Luis Munoz Marin Intl
7h 49m
1 stop
TYS3:09 pmKnoxville McGhee Tyson
$716
United Airlines
Apr 4
TYS7:05 amKnoxville McGhee Tyson
8h 37m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Apr 11
SJU7:20 amSan Juan Luis Munoz Marin Intl
15h 14m
2 stops
TYS10:34 pmKnoxville McGhee Tyson
$801

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 March 30, 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

Sun 4/12

11:27 am-11:58 pm

2 stops36h 31m

San Juan Luis Munoz Marin Intl

Thu 4/16

6:00 am-2:45 pm

1 stop8h 45m

$240

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 4/25

12:56 pm-12:23 pm

1 stop23h 27m

San Juan Luis Munoz Marin Intl

Sat 5/2

3:26 pm-3:41 pm

2 stops24h 15m

$267

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 4/12

5:10 pm-6:55 pm

1 stop25h 45m

San Juan Luis Munoz Marin Intl

Thu 4/16

6:00 am-2:45 pm

1 stop8h 45m

$269

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 4/25

12:56 pm-12:23 pm

1 stop23h 27m

San Juan Luis Munoz Marin Intl

Sat 5/2

12:57 pm-2:50 pm

1 stop25h 53m

$273

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 5/14

9:40 pm-5:16 pm

1 stop19h 36m

San Juan Luis Munoz Marin Intl

Sat 5/23

5:15 pm-8:29 pm

2 stops27h 14m

$279

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 4/26

9:32 pm-12:33 pm

1 stop15h 01m

San Juan Luis Munoz Marin Intl

Wed 4/29

12:57 pm-2:50 pm

1 stop25h 53m

$281
Quickest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 4/23

9:32 pm-12:23 pm

1 stop14h 51m

San Juan Luis Munoz Marin Intl

Sat 4/25

3:21 am-3:41 pm

2 stops12h 20m

$289

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 4/23

9:32 pm-12:23 pm

1 stop14h 51m

San Juan Luis Munoz Marin Intl

Sat 4/25

3:21 am-3:41 pm

2 stops12h 20m

$290

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 4/26

9:32 pm-12:33 pm

1 stop15h 01m

San Juan Luis Munoz Marin Intl

Wed 4/29

3:19 pm-3:41 pm

2 stops24h 22m

$292

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 5/14

11:27 am-2:08 am

2 stops14h 41m

San Juan Luis Munoz Marin Intl

Fri 5/22

7:00 am-10:01 pm

1 stop15h 01m

$296

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

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 September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $445.

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 $555 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 $388 on momondo.

Can stopping save me money on Knoxville to San Juan Luis Munoz Marin Intl Airport flights?

You could potentially save up to 6% on your flight if you consider stops on a Knoxville to San Juan Luis Munoz Marin Intl Airport flight.

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

As of March 2026, prices for Knoxville to San Juan Luis Munoz Marin Intl Airport flights are approximately 16% cheaper when compared to flights at the same time last year.

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

Fastest flight time

7h 09m

Direct flights

None
The fastest flight from Knoxville to San Juan Luis Munoz Marin Intl Airport takes 7h 09m
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.
Search flight deals

  • 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 7h 09m 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 $345Free CancellationRating
7.9
8,359 reviews
Search Delta flights
SouthwestPriceFrom $376Free CancellationRating
8.0
4,329 reviews
Search Southwest flights
American AirlinesPriceFrom $385Free CancellationRating
7.1
11,530 reviews
Search American Airlines flights
United AirlinesPriceFrom $435Free CancellationRating
7.4
9,514 reviews
Search United 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
Rio Grande
Humacao
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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