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Cheap flights from Knoxville to San Juan from $149

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 5/25. 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
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
5:08 pm - 3:58 pm
TYS
-
SJU
22h 50m
1 stop
Multiple Airlines Logo
6:00 am - 10:04 am
SJU
-
TYS
28h 04m
1 stop
$326Multiple Airlines
Fri, Aug 28 - Sat, Sep 5
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
4:05 pm - 10:44 pm
SJU
-
TYS
6h 39m
1 stop
$339Multiple Airlines
Mon, Aug 3 - Mon, Aug 10
Multiple Airlines Logo
12:27 pm - 2:33 pm
TYS
-
SJU
26h 06m
1 stop
Multiple Airlines Logo
7:00 am - 10:01 pm
SJU
-
TYS
15h 01m
1 stop
$346Multiple Airlines
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
6:00 am - 10:24 pm
SJU
-
TYS
16h 24m
2 stops
$347Multiple Airlines
Mon, Aug 3 - Mon, Aug 10
Multiple Airlines Logo
4:43 pm - 11:38 pm
TYS
-
SJU
6h 55m
1 stop
Multiple Airlines Logo
5:12 pm - 8:05 am
SJU
-
TYS
14h 53m
1 stop
$348Multiple Airlines
Sat, Sep 26 - Sat, Oct 3
Multiple Airlines Logo
5:08 pm - 3:58 pm
TYS
-
SJU
22h 50m
1 stop
Multiple Airlines Logo
6:00 am - 1:04 pm
SJU
-
TYS
7h 04m
1 stop
$356Multiple Airlines
Fri, Aug 28 - Sat, Sep 5
Multiple Airlines Logo
5:08 pm - 3:58 pm
TYS
-
SJU
22h 50m
1 stop
Multiple Airlines Logo
6:00 am - 1:04 pm
SJU
-
TYS
7h 04m
1 stop
$361Multiple Airlines
Fri, Aug 28 - Sat, Sep 5
Multiple Airlines Logo
9:26 am - 4:05 pm
TYS
-
SJU
6h 39m
1 stop
Multiple Airlines Logo
6:31 pm - 10:44 pm
SJU
-
TYS
28h 13m
1 stop
$372Multiple Airlines
Fri, Aug 7 - Sun, Aug 9
Multiple Airlines Logo
3:49 pm - 2:15 pm
TYS
-
SJU
22h 26m
2 stops
Multiple Airlines Logo
6:00 am - 4:02 pm
SJU
-
TYS
10h 02m
1 stop
$373Multiple Airlines
Wed, Aug 19 - Sun, Aug 23
Multiple Airlines Logo
8:40 pm - 4:05 pm
TYS
-
SJU
19h 25m
1 stop
Multiple Airlines Logo
6:31 pm - 7:39 pm
SJU
-
TYS
25h 08m
2 stops
$381Multiple Airlines
Sat, Jul 25 - Wed, Aug 5

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
Oct 22
TYS7:13 amKnoxville McGhee Tyson
5h 27m
1 stop
SJU12:40 pmSan Juan Luis Munoz Marin Intl
Oct 28
SJU8:30 amSan Juan Luis Munoz Marin Intl
10h 50m
2 stops
TYS7:20 pmKnoxville McGhee Tyson
$436
American Airlines
Aug 21
TYS6:00 amKnoxville McGhee Tyson
15h 55m
1 stop
SJU9:55 pmSan Juan Luis Munoz Marin Intl
Aug 25
SJU1:38 pmSan Juan Luis Munoz Marin Intl
9h 20m
2 stops
TYS10:58 pmKnoxville McGhee Tyson
$441
American Airlines
Jun 9
TYS6:00 amKnoxville McGhee Tyson
12h 25m
1 stop
SJU6:25 pmSan Juan Luis Munoz Marin Intl
Jul 9
SJU6:00 amSan Juan Luis Munoz Marin Intl
12h 47m
1 stop
TYS6:47 pmKnoxville McGhee Tyson
$456

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
Aug 28
TYS12:30 pmKnoxville McGhee Tyson
9h 45m
1 stop
SJU10:15 pmSan Juan Luis Munoz Marin Intl
Sep 5
SJU10:25 amSan Juan Luis Munoz Marin Intl
8h 55m
2 stops
TYS7:20 pmKnoxville McGhee Tyson
$446
Southwest
Oct 18
TYS6:25 amKnoxville McGhee Tyson
10h 05m
2 stops
SJU4:30 pmSan Juan Luis Munoz Marin Intl
Oct 23
SJU5:00 amSan Juan Luis Munoz Marin Intl
10h 20m
2 stops
TYS3:20 pmKnoxville McGhee Tyson
$461
Southwest
Aug 28
TYS8:25 amKnoxville McGhee Tyson
11h 40m
2 stops
SJU8:05 pmSan Juan Luis Munoz Marin Intl
Sep 5
SJU10:25 amSan Juan Luis Munoz Marin Intl
8h 55m
2 stops
TYS7:20 pmKnoxville McGhee Tyson
$466

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 May 10, 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

Fri 8/28

5:08 pm-3:58 pm

1 stop22h 50m

San Juan Luis Munoz Marin Intl

Sat 9/5

6:00 am-10:04 am

1 stop28h 04m

$326

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 8/3

12:40 pm-2:34 pm

1 stop25h 54m

San Juan Luis Munoz Marin Intl

Mon 8/10

4:05 pm-10:44 pm

1 stop6h 39m

$339

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 5/29

12:27 pm-2:33 pm

1 stop26h 06m

San Juan Luis Munoz Marin Intl

Mon 6/1

7:00 am-10:01 pm

1 stop15h 01m

$346

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 8/3

12:40 pm-2:34 pm

1 stop25h 54m

San Juan Luis Munoz Marin Intl

Mon 8/10

6:00 am-10:24 pm

2 stops16h 24m

$347
Quickest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 9/26

4:43 pm-11:38 pm

1 stop6h 55m

San Juan Luis Munoz Marin Intl

Sat 10/3

5:12 pm-8:05 am

1 stop14h 53m

$348

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/28

5:08 pm-3:58 pm

1 stop22h 50m

San Juan Luis Munoz Marin Intl

Sat 9/5

6:00 am-1:04 pm

1 stop7h 04m

$356

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/28

5:08 pm-3:58 pm

1 stop22h 50m

San Juan Luis Munoz Marin Intl

Sat 9/5

6:00 am-1:04 pm

1 stop7h 04m

$361

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 8/7

9:26 am-4:05 pm

1 stop6h 39m

San Juan Luis Munoz Marin Intl

Sun 8/9

6:31 pm-10:44 pm

1 stop28h 13m

$372

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Wed 8/19

3:49 pm-2:15 pm

2 stops22h 26m

San Juan Luis Munoz Marin Intl

Sun 8/23

6:00 am-4:02 pm

1 stop10h 02m

$373

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 7/25

8:40 pm-4:05 pm

1 stop19h 25m

San Juan Luis Munoz Marin Intl

Wed 8/5

6:31 pm-7:39 pm

2 stops25h 08m

$381

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 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 from Knoxville 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 $546 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 $263 on momondo.

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

You could potentially save up to 58% 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 May 2026, prices for Knoxville to San Juan Luis Munoz Marin Intl Airport flights are approximately 5% more expensive 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

6h 01m

Direct flights

None
The fastest flight from Knoxville to San Juan Luis Munoz Marin Intl Airport takes 6h 01m
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

Frequently asked questions about flying from Knoxville to San Juan Luis Munoz Marin Intl Airport

  • 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 6h 01m 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
8,451 reviews
Search Delta flights
SouthwestPriceFrom $376Free CancellationRating
8.0
4,298 reviews
Search Southwest flights
American AirlinesPriceFrom $385Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
United AirlinesPriceFrom $460Free CancellationRating
7.4
9,699 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
Humacao
Caguas
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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