$149+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJU
Jun 7 — Jun 141
Round-trip
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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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 San Juan
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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 May 8, 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 May 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Sun 5/1712:55 pm
TYS
- SJU
1 stop25h 38m
Multiple Airlines
Fri 5/227:00 am
SJU
- TYS
1 stop15h 01m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 5/8. 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
TYS
- SJU
1 stop22h 50m
Multiple Airlines
Sat 9/56:00 am
SJU
- TYS
1 stop28h 04m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Mon 8/312:40 pm
TYS
- SJU
1 stop25h 54m
Multiple Airlines
Mon 8/104:05 pm
SJU
- TYS
1 stop6h 39m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/267:22 pm
TYS
- SJU
1 stop12h 33m
Multiple Airlines
Wed 7/16:00 am
SJU
- TYS
1 stop11h 59m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/149:40 pm
TYS
- SJU
1 stop19h 36m
Multiple Airlines
Fri 5/227:00 am
SJU
- TYS
1 stop15h 01m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 8/712:50 pm
TYS
- SJU
1 stop25h 44m
Multiple Airlines
Mon 8/109:24 am
SJU
- TYS
1 stop13h 20m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 8/242:51 pm
TYS
- SJU
1 stop22h 25m
Multiple Airlines
Sat 8/298:32 am
SJU
- TYS
2 stops25h 32m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/267:22 pm
TYS
- SJU
1 stop12h 33m
Multiple Airlines
Fri 7/37:00 am
SJU
- TYS
1 stop15h 00m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Sun 6/148:15 am
TYS
- SJU
1 stop16h 22m
Multiple Airlines
Sat 6/278:50 am
SJU
- TYS
2 stops37h 57m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$368
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 May 8, 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 May 8, 2026.
This Delta deal was found by Cheapflights users on 5/7. 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.
Mon 8/37:30 am
TYS
- SJU
1 stop9h 07m
Delta
Mon 8/1012:56 pm
SJU
- TYS
1 stop7h 14m
Delta
Deal found 5/7![Delta logo]()
$436
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
TYS
- SJU
1 stop12h 24m
American Airlines
Sun 8/96:00 am
SJU
- TYS
1 stop17h 59m
American Airlines
Deal found 5/6![American Airlines logo]()
$504
This Southwest deal was found by Cheapflights users on 5/4. 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.
Tue 5/198:15 am
TYS
- SJU
2 stops9h 55m
Southwest
Sat 5/235:45 am
SJU
- TYS
2 stops12h 45m
Southwest
Deal found 5/4![Southwest logo]()
$646
This Delta deal was found by Cheapflights users on 5/5. 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 7/267:35 am
TYS
- SJU
1 stop5h 57m
Delta
Fri 7/316:00 am
SJU
- TYS
1 stop7h 16m
Delta
Deal found 5/5![Delta logo]()
$536
This American Airlines deal was found by Cheapflights users on 5/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:00 am
TYS
- SJU
1 stop8h 06m
American Airlines
Fri 7/33:40 pm
SJU
- TYS
1 stop16h 51m
American Airlines
Deal found 5/4![American Airlines logo]()
$581
This Delta deal was found by Cheapflights users on 5/7. 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 5/285:40 am
TYS
- SJU
1 stop6h 21m
Delta
Tue 6/26:15 am
SJU
- TYS
1 stop8h 18m
Delta
Deal found 5/7![Delta logo]()
$551
This American Airlines deal was found by Cheapflights users on 5/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:34 pm
TYS
- SJU
1 stop15h 29m
American Airlines
Thu 5/286:00 am
SJU
- TYS
2 stops9h 15m
American Airlines
Deal found 5/3![American Airlines logo]()
$601
This Southwest deal was found by Cheapflights users on 5/7. 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.
Wed 7/12:45 pm
TYS
- SJU
2 stops10h 00m
Southwest
Tue 7/79:50 am
SJU
- TYS
2 stops10h 30m
Southwest
Deal found 5/7![Southwest logo]()
$696
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:34 pm
TYS
- SJU
1 stop14h 05m
American Airlines
Sun 5/2412:44 am
SJU
- TYS
1 stop10h 29m
American Airlines
Deal found 5/7![American Airlines logo]()
$656
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:00 am
TYS
- SJU
2 stops10h 48m
American Airlines
Tue 6/210:29 am
SJU
- TYS
1 stop13h 30m
American Airlines
Deal found 5/6![American Airlines logo]()
$741
Last-minute flights from Knoxville to San JuanDiscover last-minute flight deals from Knoxville to San Juan. Data last updated May 8, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to San Juan. Data last updated May 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/149:40 pm
TYS
- SJU
1 stop19h 36m
Multiple Airlines
Fri 5/227:00 am
SJU
- TYS
1 stop15h 01m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Sun 5/1712:55 pm
TYS
- SJU
1 stop25h 38m
Multiple Airlines
Fri 5/227:00 am
SJU
- TYS
1 stop15h 01m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Sun 5/1712:55 pm
TYS
- SJU
1 stop25h 38m
Multiple Airlines
Sat 5/235:15 pm
SJU
- TYS
2 stops27h 14m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/112:27 pm
TYS
- SJU
1 stop26h 06m
Multiple Airlines
Thu 6/45:15 pm
SJU
- TYS
2 stops30h 24m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/512:40 pm
TYS
- SJU
1 stop25h 53m
Multiple Airlines
Mon 6/87:00 am
SJU
- TYS
1 stop14h 50m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Wed 6/108:00 am
TYS
- SJU
1 stop16h 37m
Multiple Airlines
Sun 6/147:30 am
SJU
- TYS
2 stops33h 10m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Sun 6/148:15 am
TYS
- SJU
1 stop16h 22m
Multiple Airlines
Sat 6/278:50 am
SJU
- TYS
2 stops37h 57m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/254:05 pm
TYS
- SJU
2 stops21h 11m
Multiple Airlines
Wed 7/16:00 am
SJU
- TYS
1 stop11h 59m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/254:05 pm
TYS
- SJU
2 stops21h 11m
Multiple Airlines
Fri 7/37:00 am
SJU
- TYS
1 stop15h 00m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/267:22 pm
TYS
- SJU
1 stop12h 33m
Multiple Airlines
Wed 7/16:00 am
SJU
- TYS
1 stop11h 59m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/267:22 pm
TYS
- SJU
1 stop12h 33m
Multiple Airlines
Fri 7/37:00 am
SJU
- TYS
1 stop15h 00m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$364
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 May 8, 2026.
Search for one-way flight options from Knoxville to San Juan. Find affordable one-way fares based on user searches. Data last updated May 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 5/2512:27 pm
TYS
- SJU
1 stop26h 06m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Sun 5/1712:55 pm
TYS
- SJU
1 stop25h 38m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Sun 6/218:15 am
TYS
- SJU
1 stop16h 22m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$198
This eDestinos deal was found by Cheapflights users on 5/7. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/59:11 pm
TYS
- SJU
1 stop27h 17m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Thu 5/218:38 pm
TYS
- SJU
1 stop19h 17m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:49 pm
TYS
- SJU
1 stop13h 50m
American Airlines
Deal found 5/7![American Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Fri 5/151:15 pm
TYS
- SJU
1 stop9h 28m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$281
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 May 8, 2026.
Round-trip from | $295 (Kiwi.com) |
|---|---|
One-way from | $149 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $586 |
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 May 8, 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
Mon 8/3
7:30 am-4:37 pm
1 stop9h 07m
San Juan Luis Munoz Marin Intl
Mon 8/10
12:56 pm-8:10 pm
1 stop7h 14m
$436
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Tue 8/4
6:00 am-6:24 pm
1 stop12h 24m
San Juan Luis Munoz Marin Intl
Sun 8/9
6:00 am-11:59 pm
1 stop17h 59m
$504
Quickest round-trip
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Sun 7/26
7:35 am-1:32 pm
1 stop5h 57m
San Juan Luis Munoz Marin Intl
Fri 7/31
6:00 am-1:16 pm
1 stop7h 16m
$536
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Thu 5/28
5:40 am-12:01 pm
1 stop6h 21m
San Juan Luis Munoz Marin Intl
Tue 6/2
6:15 am-2:33 pm
1 stop8h 18m
$551
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Wed 6/24
6:00 am-2:06 pm
1 stop8h 06m
San Juan Luis Munoz Marin Intl
Fri 7/3
3:40 pm-8:31 am
1 stop16h 51m
$581
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Thu 5/21
7:34 pm-11:03 am
1 stop15h 29m
San Juan Luis Munoz Marin Intl
Thu 5/28
6:00 am-3:15 pm
2 stops9h 15m
$601
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Tue 5/19
8:15 am-6:10 pm
2 stops9h 55m
San Juan Luis Munoz Marin Intl
Sat 5/23
5:45 am-6:30 pm
2 stops12h 45m
$646
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Thu 5/21
7:34 pm-9:39 am
1 stop14h 05m
San Juan Luis Munoz Marin Intl
Sun 5/24
12:44 am-11:13 am
1 stop10h 29m
$656
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Wed 7/1
2:45 pm-12:45 am
2 stops10h 00m
San Juan Luis Munoz Marin Intl
Tue 7/7
9:50 am-8:20 pm
2 stops10h 30m
$696
KnoxvilleSan Juan
TYS - SJU
TYSSJU
Knoxville McGhee Tyson
Thu 5/28
5:00 am-3:48 pm
2 stops10h 48m
San Juan Luis Munoz Marin Intl
Tue 6/2
10:29 am-11:59 pm
1 stop13h 30m
$741
Showing 1-10 of 15 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?
To ensure you get the cheapest price possible for a flight from Knoxville to San Juan, you should look to book at least 29 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, July is the cheapest month in which you can book a flight from Knoxville to San Juan (average of $100). Flying from Knoxville to San Juan in March is currently the most expensive (average of $487). 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 May 8, 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.
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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Top 4 airlines flying from Knoxville to San Juan
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$345 | Average$514 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$376 | Average$516 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$385 | Average$551 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$460 | Average$664 | FlexibilityNo cancel fee | On-time69% |