$565+ Cheap flights from Knoxville (TYS) to Costa Rica
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJO
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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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
Last-minute
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 June 4, 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 June 4, 2026.
This Southwest deal was found by Cheapflights users on 5/30. 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 6/47:30 am
TYS
- SJO
2 stops14h 10m
Southwest
Tue 6/98:45 am
SJO
- TYS
2 stops10h 30m
Southwest
Deal found 5/30![Southwest logo]()
$565
This Delta deal was found by Cheapflights users on 6/1. 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 11/248:47 am
TYS
- SJO
1 stop14h 28m
Delta
Tue 12/17:00 am
SJO
- TYS
1 stop7h 05m
Delta
Deal found 6/1![Delta logo]()
$608
This United Airlines deal was found by Cheapflights users on 6/2. 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 9/167:15 am
TYS
- SJO
1 stop7h 06m
United Airlines
Wed 9/231:25 pm
SJO
- TYS
2 stops18h 20m
United Airlines
Deal found 6/2![United Airlines logo]()
$613
This American Airlines deal was found by Cheapflights users on 6/2. 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 9/167:00 am
TYS
- SJO
1 stop15h 07m
American Airlines
Wed 9/236:00 am
SJO
- TYS
1 stop13h 58m
American Airlines
Deal found 6/2![American Airlines logo]()
$628
This Kiwi.com deal was found by Cheapflights users on 5/31. 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 stop27h 32m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$635
This Delta deal was found by Cheapflights users on 5/31. 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 10/45:45 am
TYS
- LIR
1 stop8h 15m
Delta
Thu 10/81:25 pm
LIR
- TYS
1 stop8h 21m
Delta
Deal found 5/31![Delta logo]()
$646
This American Airlines deal was found by Cheapflights users on 5/31. 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.
Sun 10/46:15 am
TYS
- LIR
1 stop9h 03m
American Airlines
Fri 10/91:15 pm
LIR
- TYS
2 stops21h 12m
American Airlines
Deal found 5/31![American Airlines logo]()
$651
This American Airlines deal was found by Cheapflights users on 6/1. 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.
Mon 11/237:38 am
TYS
- SJO
2 stops14h 17m
American Airlines
Tue 12/17:00 am
SJO
- TYS
2 stops13h 04m
American Airlines
Deal found 6/1![American Airlines logo]()
$652
This American Airlines deal was found by Cheapflights users on 6/1. 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.
Mon 11/236:18 pm
TYS
- LIR
1 stop21h 27m
American Airlines
Tue 12/11:21 pm
LIR
- TYS
1 stop9h 24m
American Airlines
Deal found 6/1![American Airlines logo]()
$657
This American Airlines deal was found by Cheapflights users on 6/2. 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 10/105:08 pm
TYS
- SJO
2 stops19h 57m
American Airlines
Sat 10/242:45 pm
SJO
- TYS
2 stops18h 03m
American Airlines
Deal found 6/2![American Airlines logo]()
$658
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Sun 7/265:37 am
TYS
- SJO
1 stop19h 01m
American Airlines
Sun 8/211:41 pm
SJO
- TYS
1 stop17h 49m
American Airlines
Deal found 6/3![American Airlines logo]()
$674
This American Airlines deal was found by Cheapflights users on 6/3. 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 7/235:37 am
TYS
- LIR
1 stop11h 03m
American Airlines
Wed 7/292:47 pm
LIR
- TYS
1 stop7h 12m
American Airlines
Deal found 6/3![American Airlines logo]()
$676
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 June 4, 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 June 4, 2026.
This United Airlines deal was found by Cheapflights users on 6/2. 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 9/167:15 am
TYS
- SJO
1 stop7h 06m
United Airlines
Wed 9/231:25 pm
SJO
- TYS
2 stops18h 20m
United Airlines
Deal found 6/2![United Airlines logo]()
$613
This American Airlines deal was found by Cheapflights users on 6/2. 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 9/167:00 am
TYS
- SJO
1 stop15h 07m
American Airlines
Wed 9/236:00 am
SJO
- TYS
1 stop13h 58m
American Airlines
Deal found 6/2![American Airlines logo]()
$628
This Delta deal was found by Cheapflights users on 5/31. 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 10/45:45 am
TYS
- LIR
1 stop8h 15m
Delta
Thu 10/81:25 pm
LIR
- TYS
1 stop8h 21m
Delta
Deal found 5/31![Delta logo]()
$646
This American Airlines deal was found by Cheapflights users on 5/31. 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.
Sun 10/46:15 am
TYS
- LIR
1 stop9h 03m
American Airlines
Thu 10/81:15 pm
LIR
- TYS
2 stops19h 12m
American Airlines
Deal found 5/31![American Airlines logo]()
$651
This United Airlines deal was found by Cheapflights users on 5/31. 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 6/306:00 am
TYS
- LIR
2 stops10h 25m
United Airlines
Tue 7/71:20 pm
LIR
- TYS
2 stops18h 23m
United Airlines
Deal found 5/31![United Airlines logo]()
$711
This Delta deal was found by Cheapflights users on 5/31. 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 10/55:45 am
TYS
- LIR
1 stop8h 15m
Delta
Thu 10/81:25 pm
LIR
- TYS
1 stop8h 21m
Delta
Deal found 5/31![Delta logo]()
$726
This American Airlines deal was found by Cheapflights users on 6/3. 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 7/235:37 am
TYS
- LIR
1 stop11h 03m
American Airlines
Wed 7/292:47 pm
LIR
- TYS
1 stop7h 12m
American Airlines
Deal found 6/3![American Airlines logo]()
$676
This United Airlines deal was found by Cheapflights users on 6/3. 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 9/116:00 am
TYS
- SJO
2 stops15h 37m
United Airlines
Wed 9/167:55 am
SJO
- TYS
1 stop8h 20m
United Airlines
Deal found 6/3![United Airlines logo]()
$724
This Delta deal was found by Cheapflights users on 5/31. 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 10/55:45 am
TYS
- SJO
1 stop8h 09m
Delta
Fri 10/91:23 pm
SJO
- TYS
1 stop8h 23m
Delta
Deal found 5/31![Delta logo]()
$737
This American Airlines deal was found by Cheapflights users on 6/2. 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.
Mon 11/305:51 pm
TYS
- LIR
2 stops19h 25m
American Airlines
Sat 12/51:39 pm
LIR
- TYS
1 stop8h 19m
American Airlines
Deal found 6/2![American Airlines logo]()
$677
This Delta deal was found by Cheapflights users on 5/31. 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 10/55:45 am
TYS
- SJO
1 stop8h 09m
Delta
Thu 10/81:23 pm
SJO
- TYS
1 stop8h 23m
Delta
Deal found 5/31![Delta logo]()
$737
This United Airlines deal was found by Cheapflights users on 6/2. 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 7/112:10 pm
TYS
- SJO
1 stop9h 27m
United Airlines
Mon 7/612:30 am
SJO
- TYS
2 stops11h 57m
United Airlines
Deal found 6/2![United Airlines logo]()
$804
This Delta deal was found by Cheapflights users on 6/1. 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 11/253:55 pm
TYS
- SJO
1 stop7h 20m
Delta
Mon 11/307:00 am
SJO
- TYS
1 stop15h 46m
Delta
Deal found 6/1![Delta logo]()
$752
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Sun 7/266:00 am
TYS
- LIR
1 stop7h 22m
American Airlines
Sun 8/22:47 pm
LIR
- TYS
2 stops17h 51m
American Airlines
Deal found 6/4![American Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 6/1. 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 8/2210:40 am
TYS
- SJO
2 stops10h 57m
United Airlines
Wed 8/261:25 pm
SJO
- TYS
2 stops18h 32m
United Airlines
Deal found 6/1![United Airlines logo]()
$829
This Delta deal was found by Cheapflights users on 5/31. 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 10/45:45 am
TYS
- SJO
1 stop8h 09m
Delta
Fri 10/91:23 pm
SJO
- TYS
1 stop8h 23m
Delta
Deal found 5/31![Delta logo]()
$788
This Delta deal was found by Cheapflights users on 5/31. 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 10/45:45 am
TYS
- SJO
1 stop8h 09m
Delta
Thu 10/81:23 pm
SJO
- TYS
1 stop8h 23m
Delta
Deal found 5/31![Delta logo]()
$788
Last-minute flights from Knoxville to Costa RicaDiscover last-minute flight deals from Knoxville to Costa Rica. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Costa Rica. Data last updated June 4, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 5/30. 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 6/47:30 am
TYS
- SJO
2 stops14h 10m
Southwest
Tue 6/98:45 am
SJO
- TYS
2 stops10h 30m
Southwest
Deal found 5/30![Southwest logo]()
$565
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Thu 6/43:25 pm
TYS
- SJO
1 stop9h 14m
United Airlines
Tue 6/97:55 am
SJO
- TYS
1 stop8h 12m
United Airlines
Deal found 5/30![United Airlines logo]()
$742
This United Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 6/97:15 am
TYS
- SJO
1 stop7h 06m
United Airlines
Mon 6/157:55 am
SJO
- TYS
1 stop13h 17m
United Airlines
Deal found 6/3![United Airlines logo]()
$773
This Kiwi.com deal was found by Cheapflights users on 5/31. 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 stop27h 32m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$635
This Southwest deal was found by Cheapflights users on 5/31. 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 6/137:00 am
TYS
- SJO
2 stops8h 35m
Southwest
Sun 6/218:45 am
SJO
- TYS
2 stops10h 30m
Southwest
Deal found 5/31![Southwest logo]()
$778
This American Airlines deal was found by Cheapflights users on 6/2. 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 6/167:01 am
TYS
- LIR
1 stop8h 40m
American Airlines
Thu 6/252:45 pm
LIR
- TYS
1 stop7h 14m
American Airlines
Deal found 6/2![American Airlines logo]()
$784
This United Airlines deal was found by Cheapflights users on 5/31. 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 6/306:00 am
TYS
- LIR
2 stops10h 25m
United Airlines
Tue 7/71:20 pm
LIR
- TYS
2 stops18h 23m
United Airlines
Deal found 5/31![United Airlines logo]()
$711
This Delta deal was found by Cheapflights users on 5/31. 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 5/31![Delta logo]()
$706
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Mon 7/205:37 am
TYS
- LIR
1 stop10h 05m
American Airlines
Fri 7/2412:35 pm
LIR
- TYS
2 stops20h 03m
American Airlines
Deal found 6/3![American Airlines logo]()
$681
This American Airlines deal was found by Cheapflights users on 6/3. 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 7/235:37 am
TYS
- LIR
1 stop11h 03m
American Airlines
Wed 7/292:47 pm
LIR
- TYS
1 stop7h 12m
American Airlines
Deal found 6/3![American Airlines logo]()
$676
This American Airlines deal was found by Cheapflights users on 6/3. 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.
Sun 7/265:37 am
TYS
- SJO
1 stop19h 01m
American Airlines
Sun 8/211:41 pm
SJO
- TYS
1 stop17h 49m
American Airlines
Deal found 6/3![American Airlines logo]()
$674
This American Airlines deal was found by Cheapflights users on 6/2. 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.
Sun 7/266:07 pm
TYS
- LIR
2 stops19h 15m
American Airlines
Sun 8/22:15 pm
LIR
- TYS
2 stops18h 23m
American Airlines
Deal found 6/2![American Airlines logo]()
$686
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 June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $608 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $644 |
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 June 4, 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
Wed 9/16
7:15 am-12:21 pm
1 stop7h 06m
San José Juan Santamaria Intl
Wed 9/23
1:25 pm-9:45 am
2 stops18h 20m
$613
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Wed 9/16
7:00 am-8:07 pm
1 stop15h 07m
San José Juan Santamaria Intl
Wed 9/23
6:00 am-9:58 pm
1 stop13h 58m
$628
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Sun 10/4
5:45 am-12:00 pm
1 stop8h 15m
Liberia
Thu 10/8
1:25 pm-11:46 pm
1 stop8h 21m
$646
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Sun 10/4
6:15 am-1:18 pm
1 stop9h 03m
Liberia
Thu 10/8
1:15 pm-10:27 am
2 stops19h 12m
$651
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Thu 7/23
5:37 am-2:40 pm
1 stop11h 03m
Liberia
Wed 7/29
2:47 pm-11:59 pm
1 stop7h 12m
$676
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Mon 11/30
5:51 pm-12:16 pm
2 stops19h 25m
Liberia
Sat 12/5
1:39 pm-10:58 pm
1 stop8h 19m
$677
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Tue 6/30
6:00 am-2:25 pm
2 stops10h 25m
Liberia
Tue 7/7
1:20 pm-9:43 am
2 stops18h 23m
$711
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Fri 9/11
6:00 am-7:37 pm
2 stops15h 37m
San José Juan Santamaria Intl
Wed 9/16
7:55 am-6:15 pm
1 stop8h 20m
$724
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Mon 10/5
5:45 am-12:00 pm
1 stop8h 15m
Liberia
Thu 10/8
1:25 pm-11:46 pm
1 stop8h 21m
$726
Quickest round-trip
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Mon 10/5
5:45 am-11:54 am
1 stop8h 09m
San José Juan Santamaria Intl
Fri 10/9
1:23 pm-11:46 pm
1 stop8h 23m
$737
Showing 1-10 of 17 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.
How often are flights from Knoxville to Costa Rica delayed?
About 100% of weekly flights between Knoxville and Costa Rica have experienced delays in the past year, with the average delay time being 48 minutes.
What is the most punctual flight time for Knoxville to Costa Rica flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
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 June 4, 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.
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
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Alternative routes for Knoxville to Costa Rica
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Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
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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 June 4, 2026.
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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 June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$491 | Average$693 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$536 | Average$638 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$550 | Average$664 | FlexibilityNo cancel fee | On-time69% |