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Cheap flights from Knoxville to Puerto Rico from $257

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 12/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:52 pm - 11:56 pmTYS-SJU
30h 04m2 stops
Multiple Airlines Logo
7:10 am - 2:55 pmSJU-TYS
8h 45m1 stop
$297Multiple Airlines
Find Deal
Thu, Dec 4 - Sat, Dec 13
Multiple Airlines Logo
1:39 pm - 1:42 amTYS-SJU
35h 03m2 stops
Multiple Airlines Logo
3:39 pm - 11:05 pmSJU-TYS
8h 26m1 stop
$305Multiple Airlines
Find Deal
Sun, Jan 11 - Thu, Jan 15
Multiple Airlines Logo
1:22 pm - 1:36 pmTYS-SJU
23h 14m1 stop
Multiple Airlines Logo
7:10 am - 2:55 pmSJU-TYS
8h 45m1 stop
$309Multiple Airlines
Find Deal
Thu, Dec 4 - Sat, Dec 13
Multiple Airlines Logo
1:39 pm - 12:59 pmTYS-SJU
46h 20m2 stops
Multiple Airlines Logo
3:39 pm - 11:05 pmSJU-TYS
8h 26m1 stop
$310Multiple Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
4:52 pm - 10:32 amTYS-SJU
16h 40m2 stops
Multiple Airlines Logo
5:09 pm - 4:02 pmSJU-TYS
23h 53m1 stop
$313Multiple Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
Multiple Airlines Logo
7:15 am - 3:13 amTYS-SJU
18h 58m1 stop
Multiple Airlines Logo
3:39 pm - 11:05 pmSJU-TYS
8h 26m1 stop
$314Multiple Airlines
Find Deal
Mon, Jan 12 - Thu, Jan 15
Multiple Airlines Logo
6:06 pm - 5:23 pmTYS-SJU
22h 17m1 stop
Multiple Airlines Logo
3:55 am - 10:28 pmSJU-TYS
19h 33m1 stop
$316Multiple Airlines
Find Deal
Mon, Jan 5 - Sun, Jan 11
Multiple Airlines Logo
1:22 pm - 1:36 pmTYS-SJU
23h 14m1 stop
Multiple Airlines Logo
8:00 am - 3:57 pmSJU-TYS
32h 57m2 stops
$317Multiple Airlines
Find Deal
Thu, Dec 4 - Sat, Dec 13
American Airlines Logo
7:11 pm - 1:08 pmTYS-SJU
16h 57m1 stop
American Airlines Logo
5:51 pm - 11:59 pmSJU-TYS
7h 08m1 stop
$365American Airlines
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Sat, Jan 24 - Mon, Feb 2
American Airlines Logo
12:15 pm - 11:59 pmTYS-SJU
10h 44m2 stops
American Airlines Logo
6:00 am - 4:54 pmSJU-TYS
11h 54m1 stop
$390American Airlines
Find Deal
Sat, Jan 24 - Mon, Feb 2

American Airlines flights from Knoxville to Puerto Rico

Our best American Airlines deals on Knoxville to Puerto Rico flight tickets
American Airlines
Jan 24
TYS7:11 pmKnoxville McGhee Tyson
16h 57m
1 stop
SJU1:08 pmSan Juan Luis Munoz Marin Intl
Feb 2
SJU5:51 pmSan Juan Luis Munoz Marin Intl
7h 08m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$365
Find similar
American Airlines
Jan 24
TYS12:15 pmKnoxville McGhee Tyson
10h 44m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Feb 2
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 54m
1 stop
TYS4:54 pmKnoxville McGhee Tyson
$390
Find similar
American Airlines
Dec 2
TYS5:07 pmKnoxville McGhee Tyson
6h 37m
1 stop
SJU12:44 amSan Juan Luis Munoz Marin Intl
Dec 9
SJU3:45 pmSan Juan Luis Munoz Marin Intl
9h 14m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$405
Find similar

United Airlines flights from Knoxville to Puerto Rico

Our best United Airlines deals on Knoxville to Puerto Rico flight tickets
United Airlines
Nov 8
TYS10:50 amKnoxville McGhee Tyson
9h 10m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Nov 10
SJU3:46 pmSan Juan Luis Munoz Marin Intl
8h 58m
1 stop
TYS11:44 pmKnoxville McGhee Tyson
$630
Find similar
United Airlines
Nov 16
TYS5:45 amKnoxville McGhee Tyson
6h 32m
1 stop
SJU1:17 pmSan Juan Luis Munoz Marin Intl
Nov 20
SJU8:10 amSan Juan Luis Munoz Marin Intl
16h 49m
2 stops
TYS11:59 pmKnoxville McGhee Tyson
$645
Find similar
United Airlines
Nov 20
TYS7:20 pmKnoxville McGhee Tyson
18h 20m
2 stops
SJU2:40 pmSan Juan Luis Munoz Marin Intl
Nov 24
SJU5:50 pmSan Juan Luis Munoz Marin Intl
17h 58m
1 stop
TYS10:48 amKnoxville McGhee Tyson
$710
Find similar

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 November 6, 2025.
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

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 12/4

4:52 pm-11:56 pm

2 stops30h 04m

San Juan Luis Munoz Marin Intl

Sat 12/13

7:10 am-2:55 pm

1 stop8h 45m

$297

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sun 1/11

1:39 pm-1:42 am

2 stops35h 03m

San Juan Luis Munoz Marin Intl

Thu 1/15

3:39 pm-11:05 pm

1 stop8h 26m

$305

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 12/4

1:22 pm-1:36 pm

1 stop23h 14m

San Juan Luis Munoz Marin Intl

Sat 12/13

7:10 am-2:55 pm

1 stop8h 45m

$309

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 1/8

1:39 pm-12:59 pm

2 stops46h 20m

San Juan Luis Munoz Marin Intl

Thu 1/15

3:39 pm-11:05 pm

1 stop8h 26m

$310

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 12/11

4:52 pm-10:32 am

2 stops16h 40m

San Juan Luis Munoz Marin Intl

Mon 12/15

5:09 pm-4:02 pm

1 stop23h 53m

$313

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 1/12

7:15 am-3:13 am

1 stop18h 58m

San Juan Luis Munoz Marin Intl

Thu 1/15

3:39 pm-11:05 pm

1 stop8h 26m

$314

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Mon 1/5

6:06 pm-5:23 pm

1 stop22h 17m

San Juan Luis Munoz Marin Intl

Sun 1/11

3:55 am-10:28 pm

1 stop19h 33m

$316

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Thu 12/4

1:22 pm-1:36 pm

1 stop23h 14m

San Juan Luis Munoz Marin Intl

Sat 12/13

8:00 am-3:57 pm

2 stops32h 57m

$317

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/24

7:11 pm-1:08 pm

1 stop16h 57m

San Juan Luis Munoz Marin Intl

Mon 2/2

5:51 pm-11:59 pm

1 stop7h 08m

$365

KnoxvilleSan Juan

TYS - SJU

TYSSJU

Knoxville McGhee Tyson

Sat 1/24

12:15 pm-11:59 pm

2 stops10h 44m

San Juan Luis Munoz Marin Intl

Mon 2/2

6:00 am-4:54 pm

1 stop11h 54m

$390

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 February, then you should wait until September to fly from Knoxville, when ticket prices are also cheap, with an average price of $423.

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from Knoxville is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $445. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Friday, with ticket prices averaging around $579.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is in the evening. Flights from Knoxville to Puerto Rico during this time can be as low as $314. In contrast, the most expensive time of day to depart to Puerto Rico is at noon when prices are around $562.

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 $527 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 $361 on momondo.

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

Direct flights

None
There are no direct flights from Knoxville to Puerto Rico. There are no popular flight routes from Knoxville to Puerto Rico.
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  • 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 $334Free CancellationRating
7.9
8,001 reviews
Search Delta flights
American AirlinesPriceFrom $365Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $435Free CancellationRating
7.4
9,007 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

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