Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Knoxville to San Juan from $138

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 3/9. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
5:56 pm - 1:05 am
TYS
-
SJU
30h 09m
1 stop
Multiple Airlines Logo
6:00 am - 12:09 pm
SJU
-
TYS
31h 09m
1 stop
$243Multiple Airlines
Sun, Feb 22 - Sat, Feb 28
Multiple Airlines Logo
7:00 am - 2:25 am
TYS
-
SJU
18h 25m
1 stop
Multiple Airlines Logo
3:30 pm - 12:02 pm
SJU
-
TYS
21h 32m
1 stop
$272Multiple Airlines
Sun, Mar 1 - Wed, Mar 4
Multiple Airlines Logo
7:21 pm - 2:25 pm
TYS
-
SJU
18h 04m
1 stop
Multiple Airlines Logo
3:30 pm - 12:02 pm
SJU
-
TYS
21h 32m
1 stop
$273Multiple Airlines
Mon, Mar 2 - Wed, Mar 4
Multiple Airlines Logo
1:52 pm - 2:25 pm
TYS
-
SJU
23h 33m
1 stop
Multiple Airlines Logo
3:30 pm - 12:02 pm
SJU
-
TYS
21h 32m
1 stop
$281Multiple Airlines
Sat, Feb 28 - Wed, Mar 4
Multiple Airlines Logo
9:36 pm - 5:32 pm
TYS
-
SJU
18h 56m
2 stops
Multiple Airlines Logo
7:00 am - 6:08 pm
SJU
-
TYS
12h 08m
1 stop
$285Multiple Airlines
Mon, Mar 2 - Sat, Mar 7
Multiple Airlines Logo
5:53 pm - 10:47 am
TYS
-
SJU
15h 54m
1 stop
Multiple Airlines Logo
7:00 am - 6:08 pm
SJU
-
TYS
12h 08m
1 stop
$300Multiple Airlines
Sun, Mar 1 - Sat, Mar 7
Multiple Airlines Logo
9:40 pm - 12:33 pm
TYS
-
SJU
14h 53m
1 stop
Multiple Airlines Logo
7:00 am - 5:30 pm
SJU
-
TYS
10h 30m
1 stop
$301Multiple Airlines
Thu, May 7 - Mon, May 11
Multiple Airlines Logo
7:00 am - 2:25 am
TYS
-
SJU
18h 25m
1 stop
Multiple Airlines Logo
11:04 am - 6:27 pm
SJU
-
TYS
8h 23m
1 stop
$303Multiple Airlines
Sun, Mar 1 - Fri, Mar 6
Multiple Airlines Logo
2:06 pm - 2:53 am
TYS
-
SJU
11h 47m
1 stop
Multiple Airlines Logo
7:00 am - 6:08 pm
SJU
-
TYS
12h 08m
1 stop
$304Multiple Airlines
Mon, Mar 2 - Sat, Mar 7
Multiple Airlines Logo
1:15 pm - 10:09 pm
TYS
-
SJU
8h 54m
1 stop
Multiple Airlines Logo
7:53 pm - 4:40 pm
SJU
-
TYS
20h 47m
1 stop
$308Multiple Airlines
Mon, May 18 - Thu, May 28

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
Apr 22
TYS5:00 amKnoxville McGhee Tyson
9h 52m
2 stops
SJU2:52 pmSan Juan Luis Munoz Marin Intl
Apr 27
SJU11:59 pmSan Juan Luis Munoz Marin Intl
12h 31m
1 stop
TYS12:30 pmKnoxville McGhee Tyson
$386
American Airlines
Apr 12
TYS5:00 amKnoxville McGhee Tyson
15h 51m
1 stop
SJU8:51 pmSan Juan Luis Munoz Marin Intl
Apr 26
SJU11:59 pmSan Juan Luis Munoz Marin Intl
12h 31m
1 stop
TYS12:30 pmKnoxville McGhee Tyson
$426

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
Mar 3
TYS2:21 pmKnoxville McGhee Tyson
7h 01m
1 stop
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Mar 10
SJU7:05 amSan Juan Luis Munoz Marin Intl
7h 45m
1 stop
TYS2:50 pmKnoxville McGhee Tyson
$381
United Airlines
Feb 7
TYS11:07 amKnoxville McGhee Tyson
8h 53m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Feb 9
SJU7:45 amSan Juan Luis Munoz Marin Intl
11h 20m
1 stop
TYS6:05 pmKnoxville McGhee Tyson
$651
United Airlines
Feb 7
TYS9:30 amKnoxville McGhee Tyson
11h 52m
1 stop
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Feb 9
SJU8:35 amSan Juan Luis Munoz Marin Intl
27h 22m
2 stops
TYS10:57 amKnoxville McGhee Tyson
$667

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 February 5, 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

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 2/22

5:56 pm-1:05 am

1 stop30h 09m

San Juan Luis Munoz Marin Intl

Sat 2/28

6:00 am-12:09 pm

1 stop31h 09m

$243

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 3/1

7:00 am-2:25 am

1 stop18h 25m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:30 pm-12:02 pm

1 stop21h 32m

$272

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 3/2

7:21 pm-2:25 pm

1 stop18h 04m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:30 pm-12:02 pm

1 stop21h 32m

$273

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 2/28

1:52 pm-2:25 pm

1 stop23h 33m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:30 pm-12:02 pm

1 stop21h 32m

$281

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 3/2

9:36 pm-5:32 pm

2 stops18h 56m

San Juan Luis Munoz Marin Intl

Sat 3/7

7:00 am-6:08 pm

1 stop12h 08m

$285

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 3/1

5:53 pm-10:47 am

1 stop15h 54m

San Juan Luis Munoz Marin Intl

Sat 3/7

7:00 am-6:08 pm

1 stop12h 08m

$300

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 5/7

9:40 pm-12:33 pm

1 stop14h 53m

San Juan Luis Munoz Marin Intl

Mon 5/11

7:00 am-5:30 pm

1 stop10h 30m

$301

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 3/1

7:00 am-2:25 am

1 stop18h 25m

San Juan Luis Munoz Marin Intl

Fri 3/6

11:04 am-6:27 pm

1 stop8h 23m

$303

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 3/2

2:06 pm-2:53 am

1 stop11h 47m

San Juan Luis Munoz Marin Intl

Sat 3/7

7:00 am-6:08 pm

1 stop12h 08m

$304

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 5/18

1:15 pm-10:09 pm

1 stop8h 54m

San Juan Luis Munoz Marin Intl

Thu 5/28

7:53 pm-4:40 pm

1 stop20h 47m

$308

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $440.

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 $539 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 $382 on momondo.

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

You could potentially save up to 11% 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 February 2026, prices for Knoxville to San Juan Luis Munoz Marin Intl Airport flights are approximately 61% 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 05m

Direct flights

None
The fastest flight from Knoxville to San Juan Luis Munoz Marin Intl Airport takes 6h 05m
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 6h 05m 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 $335Free CancellationRating
7.9
8,151 reviews
Search Delta flights
American AirlinesPriceFrom $385Free CancellationRating
7.2
11,237 reviews
Search American Airlines flights
United AirlinesPriceFrom $435Free CancellationRating
7.4
9,240 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
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.

An easier way to manage your San Juan Luis Munoz Marin Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/7
Sat 3/14
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to San Juan