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Cheap flights from Knoxville to Puerto Rico 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 Puerto Rico 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
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
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 Puerto Rico

Our best Southwest deals on Knoxville to Puerto Rico 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 Puerto Rico

Our best United Airlines deals on Knoxville to Puerto Rico 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 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 March 29, 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

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 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 September, then you should wait until October to fly from Knoxville, when ticket prices are also cheap, with an average price of $445.

How far in advance should I book a flight 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 $388 on momondo.

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

You could potentially save up to 6% 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

7h 09m

Direct flights

None
The fastest flight from Knoxville to Puerto Rico takes 7h 09m
There are no direct flights from Knoxville to Puerto Rico. There are no popular flight routes from Knoxville to Puerto Rico.
Search flight deals

  • 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
8,359 reviews
Search Delta flights
SouthwestPriceFrom $376Free CancellationRating
8.0
4,331 reviews
Search Southwest flights
American AirlinesPriceFrom $385Free CancellationRating
7.1
11,521 reviews
Search American Airlines flights
United AirlinesPriceFrom $435Free CancellationRating
7.4
9,509 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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