$139+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Mar 13 — Mar 201
1 adult, Economy
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Find cheap flights from Knoxville to San Juan with Cheapflights
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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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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 February 11, 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 February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/1811:30 am
TYS
- SJU
1 stop7h 25m
Multiple Airlines
Tue 3/247:54 pm
SJU
- TYS
1 stop14h 46m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/56:30 am
TYS
- SJU
1 stop7h 30m
Multiple Airlines
Sun 3/85:30 am
SJU
- TYS
1 stop16h 41m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/279:36 pm
TYS
- SJU
2 stops43h 22m
Multiple Airlines
Sat 3/77:00 am
SJU
- TYS
1 stop12h 08m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/15:53 pm
TYS
- SJU
2 stops39h 01m
Multiple Airlines
Thu 3/58:05 pm
SJU
- TYS
1 stop23h 22m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/168:58 am
TYS
- SJU
1 stop26h 51m
Multiple Airlines
Thu 3/195:30 am
SJU
- TYS
1 stop17h 21m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/72:56 pm
TYS
- SJU
1 stop20h 53m
Multiple Airlines
Sat 4/118:47 pm
SJU
- TYS
1 stop25h 46m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Mon 2/237:15 am
TYS
- SJU
1 stop8h 24m
Multiple Airlines
Fri 2/272:59 am
SJU
- TYS
2 stops43h 19m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/98:54 pm
TYS
- SJU
1 stop16h 31m
Multiple Airlines
Fri 3/135:30 am
SJU
- TYS
1 stop18h 02m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$333
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 February 11, 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 February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/56:30 am
TYS
- SJU
1 stop7h 30m
Multiple Airlines
Sun 3/86:00 am
SJU
- TYS
2 stops29h 01m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 2/8. 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.
Sat 5/96:40 am
TYS
- SJU
1 stop12h 25m
Southwest
Wed 5/138:10 am
SJU
- TYS
1 stop9h 00m
Southwest
Deal found 2/8![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 2/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/195:54 pm
TYS
- SJU
1 stop5h 18m
Delta
Mon 4/276:15 am
SJU
- TYS
1 stop10h 53m
Delta
Deal found 2/8![Delta logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/188:30 am
TYS
- SJU
2 stops11h 20m
Multiple Airlines
Tue 3/247:54 pm
SJU
- TYS
1 stop14h 46m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/2712:55 pm
TYS
- SJU
1 stop9h 14m
Multiple Airlines
Sat 3/77:00 am
SJU
- TYS
1 stop12h 08m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/72:56 pm
TYS
- SJU
1 stop20h 53m
Multiple Airlines
Wed 4/293:19 pm
SJU
- TYS
2 stops24h 22m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 4/224:25 pm
TYS
- SJU
1 stop28h 19m
Multiple Airlines
Tue 4/283:36 pm
SJU
- TYS
1 stop19h 00m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/288:00 am
TYS
- SJU
1 stop11h 06m
Multiple Airlines
Sat 4/49:06 am
SJU
- TYS
1 stop10h 02m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/118:30 am
TYS
- SJU
1 stop17h 28m
Multiple Airlines
Wed 3/1812:15 pm
SJU
- TYS
2 stops29h 07m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$389
Last-minute flights from Knoxville to San JuanDiscover last-minute flight deals from Knoxville to San Juan. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to San Juan. Data last updated February 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Mon 2/237:15 am
TYS
- SJU
1 stop8h 24m
Multiple Airlines
Fri 2/272:59 am
SJU
- TYS
2 stops43h 19m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 2/279:36 pm
TYS
- SJU
2 stops43h 22m
Multiple Airlines
Sat 3/77:00 am
SJU
- TYS
1 stop12h 08m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/15:53 pm
TYS
- SJU
2 stops39h 01m
Multiple Airlines
Thu 3/58:05 pm
SJU
- TYS
1 stop23h 22m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 3/56:30 am
TYS
- SJU
1 stop7h 30m
Multiple Airlines
Sun 3/85:30 am
SJU
- TYS
1 stop16h 41m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/98:54 pm
TYS
- SJU
1 stop16h 31m
Multiple Airlines
Fri 3/135:30 am
SJU
- TYS
1 stop18h 02m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/168:58 am
TYS
- SJU
1 stop26h 51m
Multiple Airlines
Thu 3/195:30 am
SJU
- TYS
1 stop17h 21m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/1811:30 am
TYS
- SJU
1 stop7h 25m
Multiple Airlines
Tue 3/247:54 pm
SJU
- TYS
1 stop14h 46m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$286
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 February 11, 2026.
Search for one-way flight options from Knoxville to San Juan. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/308:58 am
TYS
- SJU
1 stop9h 57m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Thu 2/195:56 pm
TYS
- SJU
1 stop30h 09m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Wed 4/18:30 am
TYS
- SJU
1 stop13h 29m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/114:25 pm
TYS
- SJU
2 stops32h 04m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Wed 2/183:52 pm
TYS
- SJU
2 stops30h 32m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$238
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 February 11, 2026.
Round-trip from | $286 (Kiwi.com) |
|---|---|
One-way from | $139 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $528 |
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 February 11, 2026.
Use the filters below to find and compare flights from Knoxville to San Juan that are best for you.
Fly from
Knoxville
Fly to
San Juan
Route
Depart
Return
Price
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Thu 3/5
6:30 am-3:00 pm
1 stop7h 30m
San Juan Luis Munoz Marin Intl
Sun 3/8
6:00 am-11:01 am
2 stops29h 01m
$327
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Wed 3/18
8:30 am-7:50 pm
2 stops11h 20m
San Juan Luis Munoz Marin Intl
Tue 3/24
7:54 pm-10:40 am
1 stop14h 46m
$331
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Fri 2/27
12:55 pm-11:09 pm
1 stop9h 14m
San Juan Luis Munoz Marin Intl
Sat 3/7
7:00 am-6:08 pm
1 stop12h 08m
$334
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Tue 4/7
2:56 pm-11:49 am
1 stop20h 53m
San Juan Luis Munoz Marin Intl
Wed 4/29
3:19 pm-3:41 pm
2 stops24h 22m
$338
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Wed 4/22
4:25 pm-8:44 pm
1 stop28h 19m
San Juan Luis Munoz Marin Intl
Tue 4/28
3:36 pm-10:36 am
1 stop19h 00m
$338
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sat 3/28
8:00 am-7:06 pm
1 stop11h 06m
San Juan Luis Munoz Marin Intl
Sat 4/4
9:06 am-7:08 pm
1 stop10h 02m
$343
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sat 5/9
6:40 am-7:05 pm
1 stop12h 25m
San Juan Luis Munoz Marin Intl
Wed 5/13
8:10 am-5:10 pm
1 stop9h 00m
$367
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sun 4/19
5:54 pm-11:12 pm
1 stop5h 18m
San Juan Luis Munoz Marin Intl
Mon 4/27
6:15 am-5:08 pm
1 stop10h 53m
$386
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Wed 3/11
8:30 am-1:58 am
1 stop17h 28m
San Juan Luis Munoz Marin Intl
Wed 3/18
12:15 pm-5:22 pm
2 stops29h 07m
$389
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Mon 3/30
8:58 am-6:55 pm
1 stop9h 57m
$139
Showing 1-10 of 14 results
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 February 6, 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 February is currently the most expensive (average of $365). 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.
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 February 11, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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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Alternative routes for Knoxville to San Juan
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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 February 11, 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 February 11, 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 February 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$337 | Average$486 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$345 | Average$559 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$385 | Average$558 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$435 | Average$635 | FlexibilityNo cancel fee | On-time69% |