$348+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJO
Aug 3 — Aug 101
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Costa Rica 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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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 July 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 July 4, 2026.
This Southwest deal was found by Cheapflights users on 7/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:20 am
TYS
- SJO
2 stops13h 20m
Southwest
Thu 10/229:00 am
SJO
- TYS
2 stops11h 40m
Southwest
Deal found 7/2![Southwest logo]()
$458
This Southwest deal was found by Cheapflights users on 7/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:20 am
TYS
- SJO
2 stops13h 20m
Southwest
Fri 10/309:00 am
SJO
- TYS
2 stops11h 40m
Southwest
Deal found 7/2![Southwest logo]()
$471
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:25 pm
TYS
- SJO
2 stops39h 30m
Multiple Airlines
Thu 10/227:07 am
SJO
- TYS
1 stop27h 07m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$548
This Southwest deal was found by Cheapflights users on 6/29. 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.
Fri 7/37:30 am
TYS
- SJO
2 stops14h 10m
Southwest
Sun 7/58:45 am
SJO
- TYS
2 stops10h 35m
Southwest
Deal found 6/29![Southwest logo]()
$585
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 11/27:00 am
TYS
- SJO
1 stop9h 18m
Multiple Airlines
Mon 11/167:00 am
SJO
- TYS
1 stop11h 59m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$604
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 11/74:55 pm
TYS
- SJO
1 stop23h 23m
Multiple Airlines
Sun 11/157:00 am
SJO
- TYS
1 stop28h 48m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$622
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:54 pm
TYS
- SJO
1 stop22h 17m
Multiple Airlines
Sun 8/99:35 am
SJO
- TYS
1 stop30h 04m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$630
This American Airlines deal was found by Cheapflights users on 6/29. 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 10/56:00 am
TYS
- SJO
1 stop10h 00m
American Airlines
Mon 10/121:00 pm
SJO
- TYS
1 stop8h 22m
American Airlines
Deal found 6/29![American Airlines logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:00 am
TYS
- SJO
1 stop10h 11m
Multiple Airlines
Fri 10/307:07 am
SJO
- TYS
2 stops49h 37m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$640
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:20 pm
TYS
- SJO
1 stop15h 10m
Multiple Airlines
Fri 7/317:07 am
SJO
- TYS
1 stop14h 26m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$645
This American Airlines deal was found by Cheapflights users on 7/2. 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 10/216:00 am
TYS
- LIR
1 stop9h 18m
American Airlines
Tue 10/272:45 pm
LIR
- TYS
2 stops21h 38m
American Airlines
Deal found 7/2![American Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/217:25 pm
TYS
- LIR
2 stops18h 45m
United Airlines
Tue 10/274:20 pm
LIR
- TYS
2 stops16h 29m
United Airlines
Deal found 7/2![United Airlines logo]()
$675
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 July 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 July 4, 2026.
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/217:25 pm
TYS
- LIR
2 stops18h 45m
United Airlines
Tue 10/274:20 pm
LIR
- TYS
2 stops16h 29m
United Airlines
Deal found 7/2![United Airlines logo]()
$675
This American Airlines deal was found by Cheapflights users on 6/29. 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 6/29![American Airlines logo]()
$677
This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:30 am
TYS
- LIR
1 stop8h 15m
Delta
Mon 11/162:00 pm
LIR
- TYS
1 stop8h 46m
Delta
Deal found 7/3![Delta logo]()
$698
This Booking.com deal was found by Cheapflights users on 6/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:45 am
TYS
- SJO
2 stops18h 55m
Avianca
Sun 11/1512:40 pm
SJO
- TYS
3 stops21h 09m
Avianca
Deal found 6/29![Avianca logo]()
$740
This American Airlines deal was found by Cheapflights users on 7/2. 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 12/136:20 pm
TYS
- LIR
2 stops19h 05m
American Airlines
Sun 12/2011:55 am
LIR
- TYS
2 stops20h 01m
American Airlines
Deal found 7/2![American Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 8/277:15 am
TYS
- SJO
1 stop14h 22m
United Airlines
Thu 9/37:55 am
SJO
- TYS
2 stops24h 02m
United Airlines
Deal found 7/2![United Airlines logo]()
$758
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am
TYS
- LIR
1 stop9h 13m
American Airlines
Mon 11/163:13 pm
LIR
- TYS
1 stop7h 32m
American Airlines
Deal found 6/30![American Airlines logo]()
$698
This American Airlines deal was found by Cheapflights users on 7/2. 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 12/111:25 am
TYS
- SJO
2 stops10h 30m
American Airlines
Mon 12/73:38 pm
SJO
- TYS
1 stop7h 19m
American Airlines
Deal found 7/2![American Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:00 am
TYS
- SJO
3 stops15h 37m
United Airlines
Mon 10/121:25 pm
SJO
- TYS
2 stops18h 20m
United Airlines
Deal found 6/29![United Airlines logo]()
$813
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/216:00 am
TYS
- SJO
3 stops15h 37m
United Airlines
Tue 10/2710:28 pm
SJO
- TYS
2 stops14h 15m
United Airlines
Deal found 7/2![United Airlines logo]()
$822
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 7/226:00 am
TYS
- SJO
1 stop15h 35m
American Airlines
Thu 8/66:00 am
SJO
- TYS
2 stops12h 07m
American Airlines
Deal found 7/1![American Airlines logo]()
$784
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 10/265:55 pm
TYS
- SJO
2 stops20h 27m
United Airlines
Wed 10/281:25 pm
SJO
- TYS
2 stops18h 25m
United Airlines
Deal found 7/2![United Airlines logo]()
$833
Last-minute flights from Knoxville to Costa RicaDiscover last-minute flight deals from Knoxville to Costa Rica. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Costa Rica. Data last updated July 4, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/29. 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.
Fri 7/37:30 am
TYS
- SJO
2 stops14h 10m
Southwest
Sun 7/58:45 am
SJO
- TYS
2 stops10h 35m
Southwest
Deal found 6/29![Southwest logo]()
$585
This Southwest deal was found by Cheapflights users on 7/3. 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 7/67:30 am
TYS
- SJO
2 stops14h 10m
Southwest
Wed 7/88:45 am
SJO
- TYS
2 stops10h 35m
Southwest
Deal found 7/3![Southwest logo]()
$741
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Mon 7/63:25 pm
TYS
- SJO
1 stop9h 14m
United Airlines
Wed 7/87:55 am
SJO
- TYS
1 stop8h 12m
United Airlines
Deal found 7/3![United Airlines logo]()
$788
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 7/226:00 am
TYS
- SJO
1 stop15h 35m
American Airlines
Thu 8/66:00 am
SJO
- TYS
1 stop15h 51m
American Airlines
Deal found 7/1![American Airlines logo]()
$779
This Avianca deal was found by Cheapflights users on 7/1. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:45 am
TYS
- SJO
2 stops19h 55m
Avianca
Sat 8/84:35 pm
SJO
- TYS
2 stops16h 07m
Avianca
Deal found 7/1![Avianca logo]()
$793
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:20 pm
TYS
- SJO
1 stop15h 10m
Multiple Airlines
Fri 7/317:07 am
SJO
- TYS
1 stop14h 26m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$645
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:54 pm
TYS
- SJO
1 stop22h 17m
Multiple Airlines
Sun 8/99:35 am
SJO
- TYS
1 stop30h 04m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$630
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/156:02 pm
TYS
- LIR
2 stops20h 08m
United Airlines
Sat 8/221:20 pm
LIR
- TYS
2 stops18h 37m
United Airlines
Deal found 7/1![United Airlines logo]()
$881
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 8/157:30 am
TYS
- LIR
1 stop6h 30m
Delta
Sat 8/221:25 pm
LIR
- TYS
1 stop7h 14m
Delta
Deal found 7/1![Delta logo]()
$923
This Delta deal was found by Cheapflights users on 7/1. 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 8/197:30 am
TYS
- LIR
1 stop6h 30m
Delta
Wed 8/261:25 pm
LIR
- TYS
1 stop8h 29m
Delta
Deal found 7/1![Delta logo]()
$756
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 8/196:06 am
TYS
- LIR
1 stop7h 23m
American Airlines
Wed 8/2612:35 pm
LIR
- TYS
2 stops20h 10m
American Airlines
Deal found 7/1![American Airlines logo]()
$864
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 8/277:20 pm
TYS
- SJO
2 stops18h 18m
United Airlines
Thu 9/31:25 pm
SJO
- TYS
2 stops29h 28m
United Airlines
Deal found 7/2![United Airlines logo]()
$758
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 July 4, 2026.
Search for one-way flight options from Knoxville to Costa Rica. Find affordable one-way fares based on user searches. Data last updated July 4, 2026.
This Avianca deal was found by Cheapflights users on 6/29. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:19 pm
TYS
- SJO
2 stops15h 11m
Avianca
Deal found 6/29![Avianca logo]()
$348
This Delta deal was found by Cheapflights users on 6/29. 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 7/285:40 am
TYS
- SJO
1 stop8h 11m
Delta
Deal found 6/29![Delta logo]()
$400
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 July 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $458 (Southwest) |
One-way from | $348 (Avianca) |
Popular in | July |
Cheapest in | September |
Average price | $1,009 |
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 July 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
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 10/21
7:25 pm-12:10 pm
2 stops18h 45m
Liberia
Tue 10/27
4:20 pm-10:49 am
2 stops16h 29m
$675
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
Sun 12/13
6:20 pm-12:25 pm
2 stops19h 05m
Liberia
Sun 12/20
11:55 am-8:56 am
2 stops20h 01m
$682
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Thu 11/12
5:30 am-12:45 pm
1 stop8h 15m
Liberia
Mon 11/16
2:00 pm-11:46 pm
1 stop8h 46m
$698
Quickest round-trip
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Thu 11/12
6:00 am-2:13 pm
1 stop9h 13m
Liberia
Mon 11/16
3:13 pm-11:45 pm
1 stop7h 32m
$698
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Tue 12/1
11:25 am-8:55 pm
2 stops10h 30m
San José Juan Santamaria Intl
Mon 12/7
3:38 pm-11:57 pm
1 stop7h 19m
$727
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Sat 11/7
5:45 am-11:40 pm
2 stops18h 55m
San José Juan Santamaria Intl
Sun 11/15
12:40 pm-10:49 am
3 stops21h 09m
$740
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Thu 8/27
7:15 am-7:37 pm
1 stop14h 22m
San José Juan Santamaria Intl
Thu 9/3
7:55 am-9:57 am
2 stops24h 02m
$758
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Wed 7/22
6:00 am-7:35 pm
1 stop15h 35m
San José Juan Santamaria Intl
Thu 8/6
6:00 am-8:07 pm
2 stops12h 07m
$784
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Mon 10/5
6:00 am-7:37 pm
3 stops15h 37m
San José Juan Santamaria Intl
Mon 10/12
1:25 pm-9:45 am
2 stops18h 20m
$813
Showing 1-10 of 14 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 May is currently the most expensive (average of $630). 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 July 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.
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
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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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 July 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$491 | Average$786 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$493 | Average$695 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$536 | Average$638 | FlexibilityNo cancel fee | On-timeN/A |