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Cheap flights from Knoxville to Puerto Rico from $143

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 Puerto Rico departing on 7/6. 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 Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
7:00 am - 10:24 pm
SJU
-
TYS
15h 24m
1 stop
$281Multiple Airlines
Mon, Aug 3 - Mon, Aug 10
Multiple Airlines Logo
7:24 pm - 11:59 pm
TYS
-
SJU
28h 35m
2 stops
Multiple Airlines Logo
7:00 am - 9:50 pm
SJU
-
TYS
14h 50m
1 stop
$300Multiple Airlines
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
12:27 pm - 2:33 pm
TYS
-
SJU
26h 06m
1 stop
Multiple Airlines Logo
7:00 am - 9:50 pm
SJU
-
TYS
14h 50m
1 stop
$308Multiple Airlines
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
7:00 am - 10:00 pm
SJU
-
TYS
15h 00m
1 stop
$312Multiple Airlines
Mon, Jul 6 - Fri, Jul 10
Multiple Airlines Logo
12:40 pm - 2:29 pm
TYS
-
SJU
25h 49m
1 stop
Multiple Airlines Logo
7:30 am - 4:42 pm
SJU
-
TYS
33h 12m
2 stops
$316Multiple Airlines
Fri, Jul 3 - Thu, Jul 9
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
9:00 am - 10:24 pm
SJU
-
TYS
37h 24m
2 stops
$319Multiple Airlines
Mon, Jul 6 - Wed, Jul 15
Multiple Airlines Logo
7:04 pm - 12:37 am
TYS
-
SJU
29h 33m
1 stop
Multiple Airlines Logo
7:00 am - 10:00 pm
SJU
-
TYS
15h 00m
1 stop
$322Multiple Airlines
Fri, Jul 3 - Fri, Jul 10
Multiple Airlines Logo
12:40 pm - 2:29 pm
TYS
-
SJU
25h 49m
1 stop
Multiple Airlines Logo
5:15 pm - 11:33 pm
SJU
-
TYS
30h 18m
2 stops
$324Multiple Airlines
Fri, Jul 3 - Thu, Jul 16
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
7:00 am - 10:24 pm
SJU
-
TYS
15h 24m
1 stop
$327Multiple Airlines
Mon, Aug 3 - Fri, Aug 7
Multiple Airlines Logo
12:40 pm - 2:34 pm
TYS
-
SJU
25h 54m
1 stop
Multiple Airlines Logo
5:15 pm - 8:36 am
SJU
-
TYS
15h 21m
2 stops
$328Multiple Airlines
Mon, Aug 3 - Thu, Aug 6

American Airlines flights from Knoxville to Puerto Rico

Our best American Airlines deals on Knoxville to Puerto Rico flight tickets
American Airlines
May 28
TYS6:00 amKnoxville McGhee Tyson
9h 48m
1 stop
SJU3:48 pmSan Juan Luis Munoz Marin Intl
Jun 2
SJU4:38 pmSan Juan Luis Munoz Marin Intl
7h 21m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$606
American Airlines
May 28
TYS6:55 amKnoxville McGhee Tyson
8h 53m
2 stops
SJU3:48 pmSan Juan Luis Munoz Marin Intl
Jun 2
SJU10:29 amSan Juan Luis Munoz Marin Intl
13h 30m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$636
American Airlines
May 28
TYS6:00 amKnoxville McGhee Tyson
15h 59m
1 stop
SJU9:59 pmSan Juan Luis Munoz Marin Intl
Jun 2
SJU6:00 amSan Juan Luis Munoz Marin Intl
9h 15m
2 stops
TYS3:15 pmKnoxville McGhee Tyson
$666

United Airlines flights from Knoxville to Puerto Rico

Our best United Airlines deals on Knoxville to Puerto Rico flight tickets
United Airlines
May 30
TYS5:45 amKnoxville McGhee Tyson
6h 49m
1 stop
SJU12:34 pmSan Juan Luis Munoz Marin Intl
Jun 2
SJU2:05 amSan Juan Luis Munoz Marin Intl
9h 14m
1 stop
TYS11:19 amKnoxville McGhee Tyson
$866
United Airlines
May 28
TYS5:45 amKnoxville McGhee Tyson
18h 05m
2 stops
SJU11:50 pmSan Juan Luis Munoz Marin Intl
Jun 2
SJU7:40 amSan Juan Luis Munoz Marin Intl
27h 02m
2 stops
TYS10:42 amKnoxville McGhee Tyson
$970
United Airlines
May 28
TYS5:45 amKnoxville McGhee Tyson
15h 39m
1 stop
SJU9:24 pmSan Juan Luis Munoz Marin Intl
Jun 2
SJU1:25 pmSan Juan Luis Munoz Marin Intl
31h 31m
3 stops
TYS8:56 pmKnoxville McGhee Tyson
$986

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Puerto Rico 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 18, 2026.
Use the filters below to find and compare flights from Knoxville to Puerto Rico 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

12:40 pm-2:34 pm

1 stop25h 54m

San Juan Luis Munoz Marin Intl

Mon 8/10

7:00 am-10:24 pm

1 stop15h 24m

$281

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 6/1

7:24 pm-11:59 pm

2 stops28h 35m

San Juan Luis Munoz Marin Intl

Fri 6/5

7:00 am-9:50 pm

1 stop14h 50m

$300

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 6/1

12:27 pm-2:33 pm

1 stop26h 06m

San Juan Luis Munoz Marin Intl

Fri 6/5

7:00 am-9:50 pm

1 stop14h 50m

$308
Quickest round-trip

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 7/6

12:40 pm-2:34 pm

1 stop25h 54m

San Juan Luis Munoz Marin Intl

Fri 7/10

7:00 am-10:00 pm

1 stop15h 00m

$312

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 7/3

12:40 pm-2:29 pm

1 stop25h 49m

San Juan Luis Munoz Marin Intl

Thu 7/9

7:30 am-4:42 pm

2 stops33h 12m

$316

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 7/6

12:40 pm-2:34 pm

1 stop25h 54m

San Juan Luis Munoz Marin Intl

Wed 7/15

9:00 am-10:24 pm

2 stops37h 24m

$319

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 7/3

7:04 pm-12:37 am

1 stop29h 33m

San Juan Luis Munoz Marin Intl

Fri 7/10

7:00 am-10:00 pm

1 stop15h 00m

$322

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Fri 7/3

12:40 pm-2:29 pm

1 stop25h 49m

San Juan Luis Munoz Marin Intl

Thu 7/16

5:15 pm-11:33 pm

2 stops30h 18m

$324

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

Fri 8/7

7:00 am-10:24 pm

1 stop15h 24m

$327

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

Thu 8/6

5:15 pm-8:36 am

2 stops15h 21m

$328

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 Puerto Rico from

How to get the cheapest flight ticket from Knoxville to Puerto Rico

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 cheapest month to fly to Puerto Rico?

If you don’t want to visit Puerto Rico in July, then you should wait until August to fly from Knoxville, when ticket prices are also cheap, with an average price of $107.

How far in advance should I book a flight from Knoxville to Puerto Rico?

You are more likely to see cheaper flights to Puerto Rico from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $555 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from Knoxville for as low as $243 on momondo.

Can stopping save me money on Knoxville to Puerto Rico flights?

You could potentially save up to 58% on your flight if you consider stops on a Knoxville to Puerto Rico flight.

Cheap Knoxville to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Puerto Rico

Fastest flight time

6h 01m

Direct flights

None
The fastest flight from Knoxville to Puerto Rico takes 6h 01m
There are no direct flights from Knoxville to Puerto Rico. There are no popular flight routes from Knoxville to Puerto Rico.
Search flight deals

Frequently asked questions about flying from Knoxville to Puerto Rico

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Puerto Rico?

    Prices for flights from Knoxville McGhee Tyson Airport to Puerto Rico were last updated today.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Puerto Rico?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Puerto Rico?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The travel and health documents required for your trip to Puerto Rico can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Puerto Rico. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Knoxville to Puerto Rico

Compare and see reviews for airlines that fly from Knoxville to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $345Free CancellationRating
7.9
8,447 reviews
Search Delta flights
SouthwestPriceFrom $376Free CancellationRating
7.9
4,287 reviews
Search Southwest flights
American AirlinesPriceFrom $385Free CancellationRating
7.1
11,648 reviews
Search American Airlines flights
United AirlinesPriceFrom $460Free CancellationRating
7.4
9,737 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Puerto Rico?

Finding the right flight to Puerto Rico from Knoxville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Puerto Rico quick and easy, saving you time and money.

Can I find flights from Knoxville to Puerto Rico with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Puerto Rico from Knoxville with this policy.

How can momondo help me find flights from Knoxville to Puerto Rico?

momondo provides multiple filters to help you find the best flight to Puerto Rico 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 Puerto Rico right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Knoxville to Puerto Rico flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Puerto Rico 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
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