$202+ Cheap flights from Knoxville (TYS) to Costa Rica
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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJO
Jun 6 — Jun 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Knoxville to Costa Rica 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 Costa Rica
Cheapest
Best
Last-minute
One-way
Cheapest flights from Knoxville to Costa RicaExplore the most affordable flight options available from Knoxville to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.
Explore the most affordable flight options available from Knoxville to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 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.
Wed 5/272:20 pm
TYS
- SJO
1 stop26h 58m
Multiple Airlines
Mon 6/17:07 am
SJO
- TYS
1 stop14h 30m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$482
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.
Mon 6/2210:03 pm
TYS
- SJO
1 stop19h 08m
Multiple Airlines
Mon 6/297:07 am
SJO
- TYS
1 stop12h 06m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$490
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.
Fri 7/105:32 pm
TYS
- SJO
2 stops33h 43m
Multiple Airlines
Thu 7/239:35 am
SJO
- TYS
1 stop10h 49m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$519
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.
Wed 7/82:23 pm
TYS
- SJO
1 stop26h 48m
Multiple Airlines
Sun 7/267:07 am
SJO
- TYS
1 stop13h 56m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$531
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.
Wed 7/82:23 pm
TYS
- SJO
1 stop26h 48m
Multiple Airlines
Mon 7/277:07 am
SJO
- TYS
1 stop12h 08m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$532
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.
Thu 7/93:53 pm
TYS
- SJO
1 stop25h 18m
Multiple Airlines
Thu 7/239:35 am
SJO
- TYS
1 stop10h 49m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$557
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.
Wed 7/82:23 pm
TYS
- SJO
1 stop26h 48m
Multiple Airlines
Sat 7/257:07 am
SJO
- TYS
1 stop12h 54m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$559
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.
Fri 7/105:32 pm
TYS
- SJO
2 stops33h 43m
Multiple Airlines
Mon 7/277:07 am
SJO
- TYS
1 stop12h 08m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$561
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.
Sat 6/135:56 pm
TYS
- SJO
1 stop16h 24m
Multiple Airlines
Sun 6/219:35 am
SJO
- TYS
1 stop11h 12m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$567
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:00 am
TYS
- LIR
1 stop7h 10m
United Airlines
Tue 11/38:35 am
LIR
- TYS
1 stop13h 44m
United Airlines
Deal found 5/3![United Airlines logo]()
$646
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.
Sat 10/38:39 pm
TYS
- LIR
2 stops16h 21m
American Airlines
Wed 10/71:15 pm
LIR
- TYS
2 stops21h 13m
American Airlines
Deal found 5/3![American Airlines logo]()
$651
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.
Sat 12/124:31 pm
TYS
- LIR
1 stop20h 59m
American Airlines
Thu 12/241:21 pm
LIR
- TYS
1 stop10h 17m
American Airlines
Deal found 5/3![American Airlines logo]()
$653
Best flights from Knoxville to Costa RicaDiscover carefully curated flight deals from Knoxville to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 7, 2026.
Discover carefully curated flight deals from Knoxville to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 7, 2026.
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:20 pm
TYS
- SJO
2 stops12h 40m
Southwest
Thu 10/159:00 am
SJO
- TYS
2 stops10h 55m
Southwest
Deal found 5/3![Southwest logo]()
$593
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:00 am
TYS
- LIR
1 stop7h 10m
United Airlines
Tue 11/38:35 am
LIR
- TYS
1 stop13h 44m
United Airlines
Deal found 5/3![United Airlines logo]()
$646
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:40 am
TYS
- LIR
1 stop8h 20m
Delta
Wed 7/81:25 pm
LIR
- TYS
1 stop8h 27m
Delta
Deal found 5/6![Delta logo]()
$656
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.
Tue 5/266:07 pm
TYS
- SJO
2 stops21h 02m
American Airlines
Tue 6/27:00 am
SJO
- TYS
2 stops14h 56m
American Airlines
Deal found 5/4![American Airlines logo]()
$661
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.
Thu 9/177:10 am
TYS
- SJO
2 stops13h 30m
Southwest
Sun 9/209:00 am
SJO
- TYS
2 stops10h 45m
Southwest
Deal found 5/7![Southwest logo]()
$603
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.
Tue 6/26:30 pm
TYS
- SJO
2 stops20h 39m
American Airlines
Tue 6/93:08 pm
SJO
- TYS
1 stop6h 51m
American Airlines
Deal found 5/3![American Airlines logo]()
$661
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 7/125:40 am
TYS
- SJO
1 stop8h 11m
Delta
Tue 7/211:16 pm
SJO
- TYS
1 stop8h 36m
Delta
Deal found 5/5![Delta logo]()
$683
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 am
TYS
- LIR
1 stop7h 22m
American Airlines
Thu 6/253:37 pm
LIR
- TYS
1 stop17h 36m
American Airlines
Deal found 5/5![American Airlines logo]()
$676
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 am
TYS
- LIR
2 stops12h 37m
United Airlines
Fri 10/307:35 am
LIR
- TYS
1 stop13h 44m
United Airlines
Deal found 5/6![United Airlines logo]()
$771
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.
Thu 5/287:13 am
TYS
- SJO
2 stops14h 11m
American Airlines
Sat 6/66:01 am
SJO
- TYS
2 stops13h 30m
American Airlines
Deal found 5/4![American Airlines logo]()
$697
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:19 pm
TYS
- LIR
2 stops21h 06m
United Airlines
Tue 6/303:27 pm
LIR
- TYS
2 stops29h 07m
United Airlines
Deal found 5/4![United Airlines logo]()
$793
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/196:00 am
TYS
- SJO
2 stops18h 39m
United Airlines
Mon 6/2212:30 am
SJO
- TYS
2 stops18h 26m
United Airlines
Deal found 5/3![United Airlines logo]()
$799
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.
Wed 7/16:00 am
TYS
- LIR
1 stop7h 22m
American Airlines
Wed 7/82:47 pm
LIR
- TYS
2 stops18h 58m
American Airlines
Deal found 5/3![American Airlines logo]()
$731
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:00 am
TYS
- SJO
2 stops30h 11m
United Airlines
Wed 8/512:30 am
SJO
- TYS
2 stops20h 04m
United Airlines
Deal found 5/3![United Airlines logo]()
$805
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:00 am
TYS
- SJO
2 stops18h 39m
United Airlines
Sat 6/1311:13 am
SJO
- TYS
2 stops21h 29m
United Airlines
Deal found 5/7![United Airlines logo]()
$817
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:45 am
TYS
- SJO
2 stops18h 54m
United Airlines
Thu 6/1112:30 am
SJO
- TYS
2 stops42h 26m
United Airlines
Deal found 5/7![United Airlines logo]()
$821
Last-minute flights from Knoxville to Costa RicaDiscover last-minute flight deals from Knoxville to Costa Rica. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Costa Rica. Data last updated May 7, 2026 and is based on user searches.
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.
Fri 5/226:07 pm
TYS
- LIR
2 stops19h 15m
American Airlines
Fri 6/52:19 pm
LIR
- TYS
2 stops18h 17m
American Airlines
Deal found 5/6![American Airlines logo]()
$823
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.
Fri 5/227:59 pm
TYS
- LIR
1 stop17h 36m
American Airlines
Thu 5/283:37 pm
LIR
- TYS
1 stop17h 36m
American Airlines
Deal found 5/7![American Airlines logo]()
$834
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.
Wed 5/272:20 pm
TYS
- SJO
1 stop26h 58m
Multiple Airlines
Mon 6/17:07 am
SJO
- TYS
1 stop14h 30m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$482
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.
Thu 5/283:46 pm
TYS
- SJO
2 stops25h 32m
Multiple Airlines
Mon 6/87:07 am
SJO
- TYS
1 stop14h 32m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$594
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 6/32:19 pm
TYS
- SJO
1 stop26h 52m
Multiple Airlines
Wed 6/102:59 pm
SJO
- TYS
2 stops29h 17m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$633
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 6/113:47 pm
TYS
- SJO
2 stops25h 24m
Multiple Airlines
Fri 6/197:07 am
SJO
- TYS
1 stop14h 31m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$602
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 6/127:22 pm
TYS
- SJO
1 stop21h 49m
Multiple Airlines
Fri 6/197:07 am
SJO
- TYS
1 stop14h 31m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$532
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.
Sat 6/135:56 pm
TYS
- SJO
1 stop16h 24m
Multiple Airlines
Sun 6/219:35 am
SJO
- TYS
1 stop11h 12m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$567
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 am
TYS
- LIR
1 stop7h 22m
American Airlines
Thu 6/253:37 pm
LIR
- TYS
1 stop17h 36m
American Airlines
Deal found 5/5![American Airlines logo]()
$676
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.
Wed 6/176:00 am
TYS
- SJO
1 stop9h 08m
American Airlines
Wed 7/2911:41 pm
SJO
- TYS
1 stop17h 49m
American Airlines
Deal found 5/6![American Airlines logo]()
$632
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.
Mon 6/2210:03 pm
TYS
- SJO
1 stop19h 08m
Multiple Airlines
Mon 6/297:07 am
SJO
- TYS
1 stop12h 06m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$490
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2412:10 pm
TYS
- LIR
1 stop23h 40m
United Airlines
Tue 6/303:27 pm
LIR
- TYS
2 stops29h 07m
United Airlines
Deal found 5/4![United Airlines logo]()
$793
One-way flights from Knoxville to Costa RicaSearch for one-way flight options from Knoxville to Costa Rica. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
Search for one-way flight options from Knoxville to Costa Rica. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:24 pm
TYS
- SJO
1 stop21h 47m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$202
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.
Fri 6/1910:03 pm
TYS
- SJO
1 stop19h 08m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$208
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 6/183:42 pm
TYS
- SJO
1 stop25h 29m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$222
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.
Tue 6/164:45 pm
TYS
- SJO
1 stop24h 26m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$227
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.
Sat 6/135:56 pm
TYS
- SJO
1 stop16h 24m
Multiple Airlines
Deal found 5/4![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.
Wed 6/172:19 pm
TYS
- SJO
1 stop20h 01m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$258
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/28:15 am
TYS
- SJO
2 stops12h 45m
Southwest
Deal found 5/3![Southwest logo]()
$266
Find flight deals from Knoxville to Costa Rica
Keep the following information in mind while searching for Knoxville to Costa Rica flight deals. Data was last updated May 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $482 (Kiwi.com) |
One-way from | $202 (Trip.com) |
Popular in | December |
Cheapest in | February |
Average price | $636 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to Costa Rica 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 7, 2026.
Use the filters below to find and compare flights from Knoxville to Costa Rica that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Mon 10/12
7:20 pm-6:00 am
2 stops12h 40m
San José Juan Santamaria Intl
Thu 10/15
9:00 am-9:55 pm
2 stops10h 55m
$593
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Thu 9/17
7:10 am-6:40 pm
2 stops13h 30m
San José Juan Santamaria Intl
Sun 9/20
9:00 am-9:45 pm
2 stops10h 45m
$603
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 10/28
7:00 am-12:10 pm
1 stop7h 10m
Liberia
Tue 11/3
8:35 am-11:19 pm
1 stop13h 44m
$646
Quickest round-trip
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 7/1
5:40 am-12:00 pm
1 stop8h 20m
Liberia
Wed 7/8
1:25 pm-11:52 pm
1 stop8h 27m
$656
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Tue 5/26
6:07 pm-1:09 pm
2 stops21h 02m
San José Juan Santamaria Intl
Tue 6/2
7:00 am-11:56 pm
2 stops14h 56m
$661
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Tue 6/2
6:30 pm-1:09 pm
2 stops20h 39m
San José Juan Santamaria Intl
Tue 6/9
3:08 pm-11:59 pm
1 stop6h 51m
$661
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Tue 6/16
6:00 am-11:22 am
1 stop7h 22m
Liberia
Thu 6/25
3:37 pm-11:13 am
1 stop17h 36m
$676
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Sun 7/12
5:40 am-11:51 am
1 stop8h 11m
San José Juan Santamaria Intl
Tue 7/21
1:16 pm-11:52 pm
1 stop8h 36m
$683
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Thu 5/28
7:13 am-7:24 pm
2 stops14h 11m
San José Juan Santamaria Intl
Sat 6/6
6:01 am-9:31 pm
2 stops13h 30m
$697
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 7/1
6:00 am-11:22 am
1 stop7h 22m
Liberia
Wed 7/8
2:47 pm-11:45 am
2 stops18h 58m
$731
Showing 1-10 of 24 resultsSorted by cheapest first
Best time to book a flight from Knoxville to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Knoxville with our price prediction graph.
TYS-SJO
TYS-LIR
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 Costa Rica
TYS-CR0
TYS-SJO
TYS-LIR
What is the cheapest month to book a flight from Knoxville to Costa Rica?
Currently, December is the cheapest month in which you can book a flight from Knoxville to Costa Rica (average of $324). Flying from Knoxville to Costa Rica in April is currently the most expensive (average of $574). 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 Costa Rica
Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated May 7, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Knoxville to Costa Rica to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.9
Entertainment
7.8
Comfort
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Food
7.2
Overall
7.9
Entertainment
7.8
Comfort
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Food
7.2
Overall
7.9
Entertainment
7.8
Comfort
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Food
7.2
Overall
7.9
Entertainment
7.8
Comfort
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Related info for your journey
Find useful and relevant information for your journey from Knoxville to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Alternative routes for Knoxville to Costa Rica
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Knoxville to Costa Rica by cabin class
Find flights from Knoxville to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Knoxville and Costa Rica flights
Browse other Knoxville and Costa Rica flight options. Last updated on May 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Knoxville to Costa Rica
Discover the top 3 airlines that operate flights from Knoxville to Costa Rica. 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 May 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$491 | Average$675 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$536 | Average$638 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$550 | Average$664 | FlexibilityNo cancel fee | On-time69% |