$122+ Cheap flights from Knoxville (TYS) to Puerto Rico
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Sep 7 — Sep 141
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Puerto Rico with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Knoxville to Puerto Rico
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Cheapest flights from Knoxville to Puerto RicoExplore the most affordable flight options available from Knoxville to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 8, 2026.
Explore the most affordable flight options available from Knoxville to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:04 pm -
1 stop29h 34m
Tue 11/36:12 pm -
1 stop16h 53m
Deal found 8/6![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:54 pm -
1 stop10h 07m
Wed 9/168:45 am -
1 stop25h 19m
Deal found 8/3![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:40 pm -
1 stop21h 37m
Mon 11/26:12 pm -
1 stop24h 02m
Deal found 8/5![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:55 am -
1 stop12h 43m
Sun 11/159:30 am -
1 stop13h 35m
Deal found 8/3![Multiple Airlines logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:55 pm -
1 stop21h 16m
Sat 9/1210:30 am -
1 stop23h 34m
Deal found 8/4![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:08 pm -
1 stop23h 03m
Thu 9/37:00 am -
1 stop9h 21m
Deal found 8/8![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:55 pm -
1 stop21h 16m
Wed 9/92:58 pm -
1 stop19h 46m
Deal found 8/6![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:33 am -
1 stop15h 24m
Sat 10/315:12 pm -
1 stop16h 13m
Deal found 8/5![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:51 pm -
1 stop11h 24m
Tue 9/16:35 am -
1 stop27h 29m
Deal found 8/3![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/54:41 pm -
1 stop7h 20m
Mon 11/26:12 pm -
1 stop24h 02m
Deal found 8/5![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:29 pm -
1 stop16h 47m
Mon 8/176:26 am -
1 stop15h 58m
Deal found 8/4![Multiple Airlines logo]()
$294
Best flights from Knoxville to Puerto RicoDiscover carefully curated flight deals from Knoxville to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
Discover carefully curated flight deals from Knoxville to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:40 am -
1 stop8h 09m
Tue 11/38:15 am -
1 stop6h 16m
Deal found 8/7![Delta logo]()
$416
This Southwest deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:05 pm -
2 stops9h 45m
Thu 9/35:30 am -
2 stops11h 40m
Deal found 8/8![Southwest logo]()
$436
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/212:20 pm -
1 stop7h 02m
Tue 1/268:10 am -
1 stop7h 32m
Deal found 8/4![United Airlines logo]()
$446
This American Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:15 am -
2 stops9h 25m
Mon 11/23:17 pm -
2 stops8h 31m
Deal found 8/8![American Airlines logo]()
$536
This Southwest deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:55 am -
2 stops13h 25m
Mon 11/167:40 am -
1 stop10h 00m
Deal found 8/6![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:05 pm -
2 stops9h 50m
Wed 9/1610:30 am -
2 stops8h 30m
Deal found 8/3![Southwest logo]()
$461
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:38 pm -
1 stop5h 51m
Sun 8/307:00 am -
1 stop10h 19m
Deal found 8/7![Delta logo]()
$526
This Southwest deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:55 am -
2 stops13h 25m
Thu 12/1010:45 am -
2 stops10h 00m
Deal found 8/7![Southwest logo]()
$496
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:15 am -
2 stops9h 30m
Mon 11/25:35 am -
2 stops10h 25m
Deal found 8/5![Southwest logo]()
$516
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/211:00 pm -
1 stop7h 05m
Tue 8/258:20 am -
2 stops11h 30m
Deal found 8/5![Southwest logo]()
$531
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:45 am -
1 stop12h 20m
Sat 11/216:05 am -
1 stop9h 25m
Deal found 8/3![Southwest logo]()
$531
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:45 pm -
1 stop8h 20m
Sun 8/306:35 am -
1 stop8h 25m
Deal found 8/5![Southwest logo]()
$566
Last-minute flights from Knoxville to Puerto RicoDiscover last-minute flight deals from Knoxville to Puerto Rico. Data last updated August 8, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Puerto Rico. Data last updated August 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:29 pm -
1 stop16h 47m
Mon 8/176:26 am -
1 stop15h 58m
Deal found 8/4![Multiple Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:29 pm -
1 stop7h 46m
Fri 8/146:00 am -
1 stop28h 26m
Deal found 8/6![Multiple Airlines logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:55 pm -
1 stop27h 06m
Tue 8/256:35 am -
1 stop27h 29m
Deal found 8/5![Multiple Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:51 pm -
1 stop11h 24m
Tue 9/16:35 am -
1 stop27h 29m
Deal found 8/3![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:08 pm -
1 stop23h 03m
Thu 9/37:00 am -
1 stop9h 21m
Deal found 8/8![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:55 pm -
1 stop21h 16m
Sat 9/1210:30 am -
1 stop23h 34m
Deal found 8/4![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:55 pm -
1 stop21h 16m
Wed 9/92:58 pm -
1 stop19h 46m
Deal found 8/6![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:54 pm -
1 stop10h 07m
Wed 9/168:45 am -
1 stop25h 19m
Deal found 8/3![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:40 pm -
1 stop21h 37m
Mon 11/26:12 pm -
1 stop24h 02m
Deal found 8/5![Multiple Airlines logo]()
$245
One-way flights from Knoxville to Puerto RicoSearch for one-way flight options from Knoxville to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
Search for one-way flight options from Knoxville to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:55 am -
1 stop12h 46m
Deal found 8/4![Multiple Airlines logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:14 pm -
1 stop27h 24m
Deal found 8/4![Multiple Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:56 pm -
1 stop21h 15m
Deal found 8/7![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:40 pm -
1 stop21h 37m
Deal found 8/3![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:54 am -
1 stop26h 40m
Deal found 8/3![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:00 am -
1 stop12h 43m
Deal found 8/7![Multiple Airlines logo]()
$180
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:40 am -
1 stop6h 06m
Deal found 8/5![Delta logo]()
$208
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:55 pm -
2 stops8h 55m
Deal found 8/4![Southwest logo]()
$228
Find flight deals from Knoxville to Puerto Rico
Keep the following information in mind while searching for Knoxville to Puerto Rico flight deals. Data was last updated August 8, 2026.
Round-trip from | $240 (Kiwi.com) |
|---|---|
One-way from | $122 (Kiwi.com) |
Popular in | March |
Cheapest in | February |
Average price | $536 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 8, 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
Cheapest round-trip
Quickest round-trip
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Tue 10/27
5:40 am-1:49 pm
1 stop8h 09m
San Juan Luis Munoz Marin Intl
Tue 11/3
8:15 am-1:31 pm
1 stop6h 16m
$416
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Fri 8/28
2:05 pm-11:50 pm
2 stops9h 45m
San Juan Luis Munoz Marin Intl
Thu 9/3
5:30 am-5:10 pm
2 stops11h 40m
$436
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Tue 11/10
7:55 am-10:20 pm
2 stops13h 25m
San Juan Luis Munoz Marin Intl
Mon 11/16
7:40 am-4:40 pm
1 stop10h 00m
$441
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Thu 1/21
2:20 pm-10:22 pm
1 stop7h 02m
San Juan Luis Munoz Marin Intl
Tue 1/26
8:10 am-2:42 pm
1 stop7h 32m
$446
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Fri 9/11
2:05 pm-11:55 pm
2 stops9h 50m
San Juan Luis Munoz Marin Intl
Wed 9/16
10:30 am-7:00 pm
2 stops8h 30m
$461
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Thu 12/3
7:55 am-10:20 pm
2 stops13h 25m
San Juan Luis Munoz Marin Intl
Thu 12/10
10:45 am-7:45 pm
2 stops10h 00m
$496
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Mon 10/5
7:15 am-4:45 pm
2 stops9h 30m
San Juan Luis Munoz Marin Intl
Mon 11/2
5:35 am-3:00 pm
2 stops10h 25m
$516
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Thu 8/27
4:38 pm-10:29 pm
1 stop5h 51m
San Juan Luis Munoz Marin Intl
Sun 8/30
7:00 am-5:19 pm
1 stop10h 19m
$526
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Fri 8/21
1:00 pm-8:05 pm
1 stop7h 05m
San Juan Luis Munoz Marin Intl
Tue 8/25
8:20 am-7:50 pm
2 stops11h 30m
$531
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Fri 11/20
11:45 am-1:05 am
1 stop12h 20m
San Juan Luis Munoz Marin Intl
Sat 11/21
6:05 am-2:30 pm
1 stop9h 25m
$531
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from Knoxville to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Knoxville with our price prediction graph.
TYS-SJU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Knoxville to Puerto Rico
TYS-PR0
TYS-SJU
What is the cheapest month to book a flight from Knoxville to Puerto Rico?
Currently, February is the cheapest month in which you can book a flight from Knoxville to Puerto Rico (average of $456). Flying from Knoxville to Puerto Rico in March is currently the most expensive (average of $761). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Knoxville to Puerto Rico?
The price you pay for your flight from Knoxville to Puerto Rico may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Puerto Rico
Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated August 8, 2026.
See what other customers who have flown with Southwest,Delta, andAmerican Airlines from Knoxville to Puerto Rico have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Knoxville to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Knoxville to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Knoxville and Puerto Rico flights
Browse other Knoxville and Puerto Rico flight options. Last updated on August 8, 2026.
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Top 3 airlines flying from Knoxville to Puerto Rico
Discover the top 3 airlines that operate flights from Knoxville to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$376 | Average$516 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$385 | Average$597 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$426 | Average$496 | FlexibilityNo cancel fee | On-timeN/A |