$123+ Cheap flights from Knoxville (TYS) to Puerto Rico
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Oct 23 — Oct 301
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 September 23, 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 September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/137:04 pm -
1 stop20h 14m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/20![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/156:15 am -
1 stop7h 16m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/22![Multiple Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/163:54 pm -
1 stop18h 25m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/21![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/129:33 pm -
1 stop17h 45m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/20![Multiple Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 12/41:58 pm -
1 stop10h 20m
Thu 12/102:49 am -
1 stop16h 53m
Deal found 9/22![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/207:04 pm -
1 stop20h 14m
Tue 10/278:45 am -
1 stop25h 20m
Deal found 9/22![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 11/55:37 pm -
1 stop18h 48m
Thu 11/122:51 pm -
1 stop28h 06m
Deal found 9/21![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/163:54 pm -
1 stop18h 25m
Sun 10/1812:59 am -
1 stop20h 22m
Deal found 9/21![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/156:15 am -
1 stop7h 16m
Sun 10/1812:59 am -
1 stop20h 22m
Deal found 9/21![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/284:14 pm -
1 stop20h 32m
Tue 11/38:45 am -
1 stop26h 20m
Deal found 9/20![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/137:04 pm -
1 stop20h 14m
Tue 10/208:45 am -
1 stop25h 20m
Deal found 9/20![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/222:01 pm -
1 stop10h 07m
Thu 10/292:51 pm -
1 stop26h 46m
Deal found 9/20![Multiple Airlines logo]()
$293
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 September 23, 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 September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 10/189:25 am -
1 stop28h 06m
Sun 10/256:42 pm -
1 stop16h 32m
Deal found 9/18![Multiple Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 9/22. 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 10/201:00 pm -
1 stop10h 50m
Tue 10/276:35 am -
1 stop10h 05m
Deal found 9/22![Southwest logo]()
$420
This Delta deal was found by Cheapflights users on 9/21. 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 10/224:11 pm -
1 stop6h 07m
Wed 10/287:15 am -
1 stop8h 11m
Deal found 9/21![Delta logo]()
$446
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Wed 12/96:20 am -
1 stop7h 20m
Thu 12/105:50 pm -
1 stop7h 09m
Deal found 9/21![United Airlines logo]()
$592
This Southwest deal was found by Cheapflights users on 9/20. 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 10/221:50 pm -
2 stops11h 35m
Thu 10/2910:10 am -
2 stops11h 25m
Deal found 9/20![Southwest logo]()
$438
This Delta deal was found by Cheapflights users on 9/23. 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.
Wed 10/145:40 am -
1 stop8h 09m
Tue 10/207:15 am -
1 stop6h 25m
Deal found 9/23![Delta logo]()
$498
This Southwest deal was found by Cheapflights users on 9/20. 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 12/17:55 am -
2 stops13h 30m
Sun 12/66:05 am -
2 stops9h 55m
Deal found 9/20![Southwest logo]()
$486
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Sun 10/115:45 am -
1 stop6h 49m
Tue 10/201:25 pm -
1 stop7h 20m
Deal found 9/20![United Airlines logo]()
$601
This Southwest deal was found by Cheapflights users on 9/22. 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 11/912:50 pm -
1 stop7h 00m
Sun 11/157:30 am -
1 stop10h 20m
Deal found 9/22![Southwest logo]()
$508
This Southwest deal was found by Cheapflights users on 9/18. 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 12/47:55 am -
2 stops12h 55m
Sat 12/128:45 am -
2 stops12h 00m
Deal found 9/18![Southwest logo]()
$571
This Southwest deal was found by Cheapflights users on 9/22. 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 1/412:50 pm -
2 stops11h 15m
Thu 1/145:45 am -
2 stops13h 55m
Deal found 9/22![Southwest logo]()
$576
Last-minute flights from Knoxville to Puerto RicoDiscover last-minute flight deals from Knoxville to Puerto Rico. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Puerto Rico. Data last updated September 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/129:33 pm -
1 stop17h 45m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/20![Multiple Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/137:04 pm -
1 stop20h 14m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/20![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/137:04 pm -
1 stop20h 14m
Tue 10/208:45 am -
1 stop25h 20m
Deal found 9/20![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/156:15 am -
1 stop7h 16m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/22![Multiple Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/156:15 am -
1 stop7h 16m
Sun 10/1812:59 am -
1 stop20h 22m
Deal found 9/21![Multiple Airlines logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/163:54 pm -
1 stop18h 25m
Sun 10/184:34 pm -
1 stop6h 56m
Deal found 9/21![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/163:54 pm -
1 stop18h 25m
Sun 10/1812:59 am -
1 stop20h 22m
Deal found 9/21![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/207:04 pm -
1 stop20h 14m
Tue 10/278:45 am -
1 stop25h 20m
Deal found 9/22![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/222:01 pm -
1 stop10h 07m
Thu 10/292:51 pm -
1 stop26h 46m
Deal found 9/20![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/284:14 pm -
1 stop20h 32m
Tue 11/38:45 am -
1 stop26h 20m
Deal found 9/20![Multiple Airlines logo]()
$286
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 September 23, 2026.
Search for one-way flight options from Knoxville to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/163:54 pm -
1 stop8h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 stop11h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/144:14 pm -
1 stop21h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/156:15 am -
1 stop7h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/207:04 pm -
1 stop20h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/96:55 pm -
1 stop15h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/137:04 pm -
1 stop20h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/109:36 pm -
1 stop15h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/284:14 pm -
1 stop20h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 10/197:00 am -
3 stops57h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$166
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 September 23, 2026.
Round-trip from | $250 (Kiwi.com) |
|---|---|
One-way from | $123 (Kiwi.com) |
Popular in | March |
Cheapest in | April |
Average price | $496 |
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 7,457,451 searches. Data last updated September 23, 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
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Sat 10/17
10:55 am-9:55 pm
1 stop11h 00m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$125
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Wed 10/21
4:14 pm-1:31 pm
1 stop21h 17m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$155
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Mon 10/12
4:51 pm-10:19 am
1 stop17h 28m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Thu 10/22
2:01 pm-11:54 pm
2 stops33h 53m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$179
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Mon 10/19
7:00 am-4:06 pm
2 stops33h 06m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Sun 10/18
9:25 am-1:31 pm
1 stop28h 06m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$202
Quickest round-trip
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Wed 10/28
8:20 am-5:45 pm
2 stops9h 25m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$210
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Tue 10/13
1:00 pm-11:10 pm
2 stops10h 10m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$210
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Sun 10/18
9:25 am-1:31 pm
1 stop28h 06m
San Juan Luis Munoz Marin Intl
Sun 10/25
6:42 pm-11:14 am
1 stop16h 32m
$417
KnoxvilleSan Juan
TYS Knoxville McGhee Tyson - SJU San Juan Luis Munoz Marin Intl
TYSSJU
Knoxville McGhee Tyson
Tue 10/20
1:00 pm-11:50 pm
1 stop10h 50m
San Juan Luis Munoz Marin Intl
Tue 10/27
6:35 am-4:40 pm
1 stop10h 05m
$420
Showing 1-10 of 19 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, April is the cheapest month in which you can book a flight from Knoxville to Puerto Rico (average of $486). 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 82 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 September 23, 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.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
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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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 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$365 | Average$608 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$376 | Average$516 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$384 | Average$465 | FlexibilityNo cancel fee | On-timeN/A |