$146+ Cheap flights from Knoxville (TYS) to San Juan
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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Apr 28 — May 51
Round-trip
1 adult, Economy
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Best
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Cheapest flights from Knoxville to San JuanExplore the most affordable flight options available from Knoxville to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 29, 2026.
Explore the most affordable flight options available from Knoxville to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/1211:27 am
TYS
- SJU
2 stops36h 31m
Multiple Airlines
Thu 4/166:00 am
SJU
- TYS
1 stop8h 45m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/2512:56 pm
TYS
- SJU
1 stop23h 27m
Multiple Airlines
Sat 5/23:26 pm
SJU
- TYS
2 stops24h 15m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 5/149:40 pm
TYS
- SJU
1 stop19h 36m
Multiple Airlines
Sat 5/235:15 pm
SJU
- TYS
2 stops27h 14m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/269:32 pm
TYS
- SJU
1 stop15h 01m
Multiple Airlines
Wed 4/2912:57 pm
SJU
- TYS
1 stop25h 53m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/239:32 pm
TYS
- SJU
1 stop14h 51m
Multiple Airlines
Sat 4/253:21 am
SJU
- TYS
2 stops12h 20m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 5/149:40 pm
TYS
- SJU
1 stop19h 36m
Multiple Airlines
Wed 5/207:30 am
SJU
- TYS
2 stops37h 26m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/119:00 am
TYS
- SJU
1 stop25h 10m
Multiple Airlines
Sat 4/183:47 pm
SJU
- TYS
2 stops23h 54m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$302
Best flights from Knoxville to San JuanDiscover carefully curated flight deals from Knoxville to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 29, 2026.
Discover carefully curated flight deals from Knoxville to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 29, 2026.
This Southwest deal was found by Cheapflights users on 3/26. 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.
Sun 5/106:40 am
TYS
- SJU
2 stops10h 25m
Southwest
Sun 5/176:25 am
SJU
- TYS
2 stops14h 40m
Southwest
Deal found 3/26![Southwest logo]()
$441
This Delta deal was found by Cheapflights users on 3/28. 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 4/225:40 am
TYS
- SJU
1 stop6h 05m
Delta
Mon 4/276:15 am
SJU
- TYS
1 stop10h 53m
Delta
Deal found 3/28![Delta logo]()
$495
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
TYS
- SJU
1 stop7h 44m
United Airlines
Thu 4/307:20 am
SJU
- TYS
1 stop7h 14m
United Airlines
Deal found 3/23![United Airlines logo]()
$566
This Delta deal was found by Cheapflights users on 3/27. 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 5/101:59 pm
TYS
- SJU
1 stop8h 18m
Delta
Sun 5/175:43 pm
SJU
- TYS
1 stop6h 13m
Delta
Deal found 3/27![Delta logo]()
$550
This Southwest deal was found by Cheapflights users on 3/24. 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 4/116:40 am
TYS
- SJU
2 stops10h 55m
Southwest
Sat 4/185:45 am
SJU
- TYS
2 stops12h 45m
Southwest
Deal found 3/24![Southwest logo]()
$566
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Mon 4/1310:49 am
TYS
- SJU
1 stop9h 45m
United Airlines
Thu 4/162:55 pm
SJU
- TYS
1 stop8h 46m
United Airlines
Deal found 3/27![United Airlines logo]()
$706
This Southwest deal was found by Cheapflights users on 3/25. 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 4/96:35 am
TYS
- SJU
2 stops13h 25m
Southwest
Mon 4/136:50 am
SJU
- TYS
2 stops13h 30m
Southwest
Deal found 3/25![Southwest logo]()
$656
Last-minute flights from Knoxville to San JuanDiscover last-minute flight deals from Knoxville to San Juan. Data last updated March 29, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to San Juan. Data last updated March 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/105:39 pm
TYS
- SJU
1 stop16h 31m
Multiple Airlines
Mon 4/138:47 pm
SJU
- TYS
2 stops37h 49m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/119:00 am
TYS
- SJU
1 stop25h 10m
Multiple Airlines
Sat 4/183:47 pm
SJU
- TYS
2 stops23h 54m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/1211:27 am
TYS
- SJU
2 stops36h 31m
Multiple Airlines
Thu 4/166:00 am
SJU
- TYS
1 stop8h 45m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/239:32 pm
TYS
- SJU
1 stop14h 51m
Multiple Airlines
Sat 4/253:21 am
SJU
- TYS
2 stops12h 20m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/2512:56 pm
TYS
- SJU
1 stop23h 27m
Multiple Airlines
Sat 5/23:26 pm
SJU
- TYS
2 stops24h 15m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/269:32 pm
TYS
- SJU
1 stop15h 01m
Multiple Airlines
Wed 4/2912:57 pm
SJU
- TYS
1 stop25h 53m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$281
One-way flights from Knoxville to San JuanSearch for one-way flight options from Knoxville to San Juan. Find affordable one-way fares based on user searches. Data last updated March 29, 2026.
Search for one-way flight options from Knoxville to San Juan. Find affordable one-way fares based on user searches. Data last updated March 29, 2026.
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 4/166:30 am
TYS
- SJU
1 stop14h 54m
American Airlines
Deal found 3/26![American Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 6/227:26 pm
TYS
- SJU
3 stops44h 32m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 6/25:05 pm
TYS
- SJU
2 stops30h 54m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 4/54:01 pm
TYS
- SJU
2 stops16h 52m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 3/25. 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 6/23:30 pm
TYS
- SJU
1 stop6h 47m
Delta
Deal found 3/25![Delta logo]()
$208
Find flight deals from Knoxville to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 29, 2026.
Round-trip from | $240 (Kiwi.com) |
|---|---|
One-way from | $146 (American Airlines) |
Popular in | March |
Cheapest in | September |
Average price | $720 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to San Juan 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 March 29, 2026.
Use the filters below to find and compare flights from Knoxville to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sun 5/10
6:40 am-5:05 pm
2 stops10h 25m
San Juan Luis Munoz Marin Intl
Sun 5/17
6:25 am-9:05 pm
2 stops14h 40m
$441
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Wed 4/22
5:40 am-11:45 am
1 stop6h 05m
San Juan Luis Munoz Marin Intl
Mon 4/27
6:15 am-5:08 pm
1 stop10h 53m
$495
Quickest round-trip
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sun 5/10
1:59 pm-10:17 pm
1 stop8h 18m
San Juan Luis Munoz Marin Intl
Sun 5/17
5:43 pm-11:56 pm
1 stop6h 13m
$550
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Mon 4/27
7:00 am-2:44 pm
1 stop7h 44m
San Juan Luis Munoz Marin Intl
Thu 4/30
7:20 am-2:34 pm
1 stop7h 14m
$566
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sat 4/11
6:40 am-5:35 pm
2 stops10h 55m
San Juan Luis Munoz Marin Intl
Sat 4/18
5:45 am-6:30 pm
2 stops12h 45m
$566
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Thu 4/9
6:35 am-8:00 pm
2 stops13h 25m
San Juan Luis Munoz Marin Intl
Mon 4/13
6:50 am-8:20 pm
2 stops13h 30m
$656
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Mon 4/13
10:49 am-8:34 pm
1 stop9h 45m
San Juan Luis Munoz Marin Intl
Thu 4/16
2:55 pm-11:41 pm
1 stop8h 46m
$706
Cheapest one-way
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Mon 6/22
7:26 pm-3:58 pm
3 stops44h 32m
$184
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sun 4/5
7:30 am-7:19 pm
1 stop11h 49m
$207
Quickest one-way
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Tue 6/2
3:30 pm-10:17 pm
1 stop6h 47m
$208
Showing 1-10 of 14 resultsSorted by cheapest first
Best time to book a flight from Knoxville to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Knoxville with our price prediction graph.
TYS-PR1
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 San Juan
TYS-PR1
TYS-SJU
How far ahead should I book a flight from Knoxville to San Juan?
Use this chart to determine the optimal time to book a round-trip flight from Knoxville to San Juan. Price data was last updated on March 13, 2026.
To ensure you get the cheapest price possible for a flight from Knoxville to San Juan, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Knoxville to San Juan?
Currently, August is the cheapest month in which you can book a flight from Knoxville to San Juan (average of $108). Flying from Knoxville to San Juan in March is currently the most expensive (average of $382). 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 much does it cost to fly round-trip from Knoxville to San Juan?
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated March 29, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Knoxville to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Knoxville to San Juan. 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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Complete your trip
Complete your trip to San Juan by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Knoxville to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Knoxville and San Juan flights
Browse other Knoxville and San Juan flight options. Last updated on March 29, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on March 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Knoxville to San Juan
Discover the top 4 airlines that operate flights from Knoxville to San Juan. 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 March 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$345 | Average$525 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$376 | Average$516 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$385 | Average$550 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$435 | Average$635 | FlexibilityNo cancel fee | On-time69% |