$480+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJO
Sep 3 — Sep 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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Best
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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 August 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 August 4, 2026.
This Southwest deal was found by Cheapflights users on 7/31. 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.
Tue 10/207:15 am -
2 stops14h 25m
Fri 10/309:00 am -
2 stops11h 40m
Deal found 7/31![Southwest logo]()
$480
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:52 pm -
2 stops33h 03m
Mon 8/311:50 am -
2 stops30h 14m
Deal found 7/31![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Mon 10/197:00 am -
1 stop10h 11m
Sat 10/318:55 am -
2 stops22h 30m
Deal found 7/31![Multiple Airlines logo]()
$587
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Mon 10/197:00 am -
1 stop10h 11m
Wed 10/288:55 am -
2 stops21h 20m
Deal found 7/31![Multiple Airlines logo]()
$600
This Delta deal was found by Cheapflights users on 7/31. 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 11/3010:30 am -
1 stop12h 45m
Thu 12/107:00 am -
1 stop10h 26m
Deal found 7/31![Delta logo]()
$608
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 10/56:00 am -
1 stop16h 05m
Fri 10/163:01 pm -
2 stops18h 04m
Deal found 7/31![American Airlines logo]()
$613
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Mon 10/197:00 am -
1 stop10h 11m
Sun 11/17:00 am -
1 stop27h 14m
Deal found 7/31![Multiple Airlines logo]()
$619
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/242:51 pm -
1 stop26h 20m
Wed 11/1811:23 am -
2 stops24h 37m
Deal found 8/3![Multiple Airlines logo]()
$622
This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 11/75:40 am -
1 stop8h 20m
Wed 11/182:30 pm -
1 stop6h 52m
Deal found 7/31![Delta logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Mon 11/99:10 am -
1 stop7h 08m
Wed 11/1811:23 am -
2 stops24h 37m
Deal found 7/31![Multiple Airlines logo]()
$640
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 10/37:18 pm -
2 stops18h 41m
Sat 10/101:00 pm -
1 stop8h 18m
Deal found 8/4![American Airlines logo]()
$643
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 10/37:18 pm -
2 stops18h 41m
Sun 10/116:00 am -
1 stop15h 24m
Deal found 7/30![American Airlines logo]()
$648
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 August 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 August 4, 2026.
This Southwest deal was found by Cheapflights users on 7/31. 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.
Tue 10/207:15 am -
2 stops14h 25m
Fri 10/309:00 am -
2 stops11h 40m
Deal found 7/31![Southwest logo]()
$480
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/245:30 am -
1 stop8h 15m
Sun 1/312:10 pm -
1 stop8h 36m
Deal found 8/2![Delta logo]()
$633
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 10/37:18 pm -
2 stops18h 41m
Sat 10/101:00 pm -
1 stop8h 18m
Deal found 8/4![American Airlines logo]()
$643
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/97:20 pm -
2 stops18h 50m
Wed 12/162:20 pm -
2 stops18h 39m
Deal found 8/4![United Airlines logo]()
$691
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/97:00 am -
1 stop8h 18m
Thu 12/171:21 pm -
1 stop10h 17m
Deal found 8/4![American Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/97:20 pm -
2 stops18h 50m
Thu 12/172:00 pm -
1 stop19h 30m
Deal found 8/4![United Airlines logo]()
$695
This Delta deal was found by Cheapflights users on 8/1. 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.
Sun 10/45:40 am -
1 stop8h 14m
Tue 10/61:25 pm -
1 stop6h 57m
Deal found 8/1![Delta logo]()
$763
This United Airlines deal was found by Cheapflights users on 8/2. 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 10/157:15 am -
1 stop6h 55m
Sun 10/254:20 pm -
1 stop15h 03m
Deal found 8/2![United Airlines logo]()
$696
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:34 pm -
1 stop10h 41m
Sun 11/297:00 am -
1 stop10h 26m
Deal found 7/30![Delta logo]()
$764
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/141:34 pm -
1 stop8h 03m
Mon 9/217:55 am -
1 stop8h 20m
Deal found 7/31![United Airlines logo]()
$708
This American Airlines deal was found by Cheapflights users on 8/2. 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 9/147:00 am -
2 stops15h 07m
Fri 9/182:57 pm -
2 stops18h 29m
Deal found 8/2![American Airlines logo]()
$781
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am -
1 stop7h 49m
Wed 9/91:19 pm -
1 stop7h 08m
Deal found 8/2![Delta logo]()
$783
This United Airlines deal was found by Cheapflights users on 7/31. 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 1/127:00 am -
2 stops12h 16m
Mon 1/251:15 am -
3 stops18h 39m
Deal found 7/31![United Airlines logo]()
$733
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 10/246:00 am -
1 stop7h 53m
Tue 10/274:20 pm -
1 stop15h 03m
Deal found 7/31![United Airlines logo]()
$816
Last-minute flights from Knoxville to Costa RicaDiscover last-minute flight deals from Knoxville to Costa Rica. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Costa Rica. Data last updated August 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/242:51 pm -
1 stop26h 20m
Wed 11/1811:23 am -
2 stops24h 37m
Deal found 8/3![Multiple Airlines logo]()
$622
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/242:51 pm -
1 stop26h 20m
Sat 11/215:53 pm -
2 stops18h 07m
Deal found 8/3![Multiple Airlines logo]()
$680
This United Airlines deal was found by Cheapflights users on 8/3. 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 8/267:15 am -
1 stop7h 06m
Wed 11/188:45 am -
1 stop12h 12m
Deal found 8/3![United Airlines logo]()
$692
This American Airlines deal was found by Cheapflights users on 8/3. 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 8/266:57 am -
2 stops14h 56m
Wed 11/183:54 pm -
2 stops17h 39m
Deal found 8/3![American Airlines logo]()
$697
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:52 pm -
2 stops33h 03m
Mon 8/311:50 am -
2 stops30h 14m
Deal found 7/31![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/2710:54 am -
2 stops15h 01m
Thu 11/197:00 am -
1 stop27h 48m
Deal found 8/3![Multiple Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/97:20 pm -
2 stops18h 50m
Wed 12/162:20 pm -
2 stops18h 39m
Deal found 8/4![United Airlines logo]()
$691
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/97:00 am -
1 stop8h 18m
Wed 12/163:28 pm -
1 stop7h 29m
Deal found 8/4![American Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/97:20 pm -
2 stops18h 50m
Thu 12/172:00 pm -
1 stop19h 30m
Deal found 8/4![United Airlines logo]()
$695
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/96:15 am -
2 stops9h 03m
Thu 12/171:21 pm -
2 stops9h 26m
Deal found 8/4![American Airlines logo]()
$697
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/141:34 pm -
1 stop8h 03m
Mon 9/217:55 am -
1 stop8h 20m
Deal found 7/31![United Airlines logo]()
$708
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/146:15 am -
2 stops15h 52m
Mon 9/216:00 am -
2 stops15h 22m
Deal found 7/31![American Airlines logo]()
$718
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 August 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 August 4, 2026.
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/166:00 am -
2 stops16h 21m
Deal found 8/4![American Airlines logo]()
$712
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 10/97:17 am -
2 stops15h 04m
Deal found 8/4![American Airlines logo]()
$764
This American Airlines deal was found by Cheapflights users on 8/4. 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 10/156:00 am -
1 stop16h 21m
Deal found 8/4![American Airlines logo]()
$944
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:40 am -
1 stop8h 20m
Deal found 8/4![Delta logo]()
$982
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/812:06 pm -
3 stops29h 49m
Deal found 8/4![Multiple Airlines logo]()
$1,299
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1611:45 am -
3 stops36h 15m
Deal found 8/4![Multiple Airlines logo]()
$1,502
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 August 4, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $480 (Southwest) |
Popular in | July |
Cheapest in | September |
Average price | $734 |
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 August 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
Tue 10/20
7:15 am-7:40 pm
2 stops14h 25m
San José Juan Santamaria Intl
Fri 10/30
9:00 am-10:40 pm
2 stops11h 40m
$480
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Sun 1/24
5:30 am-12:45 pm
1 stop8h 15m
San José Juan Santamaria Intl
Sun 1/31
2:10 pm-11:46 pm
1 stop8h 36m
$633
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Sat 10/3
7:18 pm-11:59 am
2 stops18h 41m
San José Juan Santamaria Intl
Sat 10/10
1:00 pm-11:18 pm
1 stop8h 18m
$643
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 9/9
7:20 pm-12:10 pm
2 stops18h 50m
Liberia
Wed 12/16
2:20 pm-9:59 am
2 stops18h 39m
$691
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 9/9
7:00 am-1:18 pm
1 stop8h 18m
Liberia
Thu 12/17
1:21 pm-12:38 am
1 stop10h 17m
$692
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Wed 9/9
7:20 pm-12:10 pm
2 stops18h 50m
Liberia
Thu 12/17
2:00 pm-10:30 am
1 stop19h 30m
$695
KnoxvilleLiberia
TYS - LIR
TYSLIR
Knoxville McGhee Tyson
Thu 10/15
7:15 am-12:10 pm
1 stop6h 55m
Liberia
Sun 10/25
4:20 pm-9:23 am
1 stop15h 03m
$696
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Mon 9/14
1:34 pm-7:37 pm
1 stop8h 03m
San José Juan Santamaria Intl
Mon 9/21
7:55 am-6:15 pm
1 stop8h 20m
$708
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Tue 1/12
7:00 am-6:16 pm
2 stops12h 16m
San José Juan Santamaria Intl
Mon 1/25
1:15 am-8:54 pm
3 stops18h 39m
$733
KnoxvilleSan José
TYS - SJO
TYSSJO
Knoxville McGhee Tyson
Sun 10/4
5:40 am-11:54 am
1 stop8h 14m
San José Juan Santamaria Intl
Tue 10/6
1:25 pm-10:22 pm
1 stop6h 57m
$763
Showing 1-10 of 19 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, September is the cheapest month in which you can book a flight from Knoxville to Costa Rica (average of $503). Flying from Knoxville to Costa Rica in November is currently the most expensive (average of $932). 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 August 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
Comfort
7.8
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Overall
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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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 August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$324 | Average$739 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$491 | Average$786 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$505 | Average$722 | FlexibilityNo cancel fee | On-time71% |