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Costa Rica

$159+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJO
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap flight deals from Knoxville to Costa Rica

Cheapest flights from Knoxville to Costa Rica
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 February 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/111:59 pm
TYS
-
SJO
1 stop22h 43m
Multiple Airlines
Tue 4/2812:20 pm
SJO
-
TYS
1 stop20h 16m
Multiple Airlines
Deal found 2/16$412
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/169:32 pm
TYS
-
SJO
1 stop15h 43m
Multiple Airlines
Tue 4/2812:20 pm
SJO
-
TYS
1 stop20h 16m
Multiple Airlines
Deal found 2/16$413
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/128:20 am
TYS
-
SJO
1 stop28h 22m
Multiple Airlines
Tue 4/2812:20 pm
SJO
-
TYS
1 stop20h 16m
Multiple Airlines
Deal found 2/16$417
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/111:59 pm
TYS
-
SJO
1 stop22h 43m
Multiple Airlines
Wed 4/2912:20 pm
SJO
-
TYS
2 stops32h 13m
Multiple Airlines
Deal found 2/16$423
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/169:32 pm
TYS
-
SJO
1 stop15h 43m
Multiple Airlines
Wed 4/2912:20 pm
SJO
-
TYS
2 stops32h 13m
Multiple Airlines
Deal found 2/16$424
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/111:59 pm
TYS
-
SJO
1 stop22h 43m
Multiple Airlines
Mon 4/275:05 am
SJO
-
TYS
2 stops15h 19m
Multiple Airlines
Deal found 2/16$425
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/1712:02 pm
TYS
-
SJO
1 stop24h 40m
Multiple Airlines
Tue 3/2411:38 am
SJO
-
TYS
1 stop28h 31m
Multiple Airlines
Deal found 2/17$426
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/128:20 am
TYS
-
SJO
1 stop28h 22m
Multiple Airlines
Wed 4/2912:20 pm
SJO
-
TYS
2 stops32h 13m
Multiple Airlines
Deal found 2/16$428
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 4/128:20 am
TYS
-
SJO
1 stop28h 22m
Multiple Airlines
Mon 4/275:05 am
SJO
-
TYS
2 stops15h 19m
Multiple Airlines
Deal found 2/16$430
This American Airlines deal was found by Cheapflights users on 2/15. 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 6/165:36 am
TYS
-
LIR
1 stop10h 05m
American Airlines
Thu 6/2512:35 pm
LIR
-
TYS
1 stop9h 24m
American Airlines
Deal found 2/15$568
This United Airlines deal was found by Cheapflights users on 2/17. 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 4/129:00 am
TYS
-
LIR
1 stop7h 25m
United Airlines
Wed 4/291:20 pm
LIR
-
TYS
1 stop8h 21m
United Airlines
Deal found 2/17$586
This American Airlines deal was found by Cheapflights users on 2/15. 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 4/138:48 pm
TYS
-
LIR
2 stops18h 22m
American Airlines
Wed 4/292:40 pm
LIR
-
TYS
1 stop7h 19m
American Airlines
Deal found 2/15$591

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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$412
(Kiwi.com)

One-way from

$159
(Kiwi.com)

Popular in

October

Cheapest in

August

Average price

$565
Provider with most accurate pricing for Knoxville McGhee Tyson-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-San José Juan Santamaria Intl flights.
Search Deals
From Knoxville McGhee Tyson to Costa Rica
Search Deals
One-way flight from Knoxville McGhee Tyson to Costa Rica
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 19, 2026.
Use the filters below to find and compare flights from Knoxville to Costa Rica that are best for you.

Fly from

Knoxville

Fly to

Costa Rica

Route

Depart

Return

Price

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 4/16

9:32 pm-11:15 am

1 stop15h 43m

San José Juan Santamaria Intl

Tue 4/28

12:20 pm-10:36 am

1 stop20h 16m

$413

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Tue 3/17

12:02 pm-10:42 am

1 stop24h 40m

San José Juan Santamaria Intl

Tue 3/24

11:38 am-6:09 pm

1 stop28h 31m

$426

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Sun 4/12

8:20 am-10:42 am

1 stop28h 22m

San José Juan Santamaria Intl

Mon 4/27

5:05 am-10:24 pm

2 stops15h 19m

$430

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 4/16

9:32 pm-11:15 am

1 stop15h 43m

San José Juan Santamaria Intl

Thu 4/30

12:20 pm-9:48 pm

2 stops31h 28m

$463

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Mon 4/20

7:30 am-11:15 am

1 stop29h 45m

San José Juan Santamaria Intl

Sat 4/25

12:20 pm-2:45 pm

1 stop24h 25m

$482

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 4/16

9:32 pm-11:15 am

1 stop15h 43m

San José Juan Santamaria Intl

Sat 5/2

5:25 pm-3:41 pm

2 stops20h 16m

$483

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 4/15

4:25 pm-11:15 am

1 stop20h 50m

San José Juan Santamaria Intl

Tue 4/28

12:20 pm-10:36 am

1 stop20h 16m

$488

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Tue 4/14

3:48 pm-11:15 am

2 stops21h 27m

San José Juan Santamaria Intl

Wed 4/29

12:20 pm-2:50 pm

1 stop24h 30m

$491

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 3/19

3:55 pm-10:42 am

2 stops20h 47m

San José Juan Santamaria Intl

Thu 3/26

12:19 pm-10:26 pm

1 stop8h 07m

$508

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 4/15

4:25 pm-11:15 am

1 stop20h 50m

San José Juan Santamaria Intl

Wed 4/29

12:20 pm-2:50 pm

1 stop24h 30m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 26 results
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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.
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

What is the cheapest month to book a flight from Knoxville to Costa Rica?

Currently, April is the cheapest month in which you can book a flight from Knoxville to Costa Rica (average of $78). Flying from Knoxville to Costa Rica in March is currently the most expensive (average of $497). 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 February 19, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American 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.
Delta
7.9
Good
8,212 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,212 reviews
Delta
7.9
Good
8,212 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,321 reviews
Delta
7.9
Good
8,212 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,313 reviews
Delta
7.9
Good
8,212 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • What airport do you fly from for flights from Knoxville to Costa Rica?

    Knoxville McGhee Tyson (TYS), located 11.3 mi from the city center, is the airport you fly out of when you book flights from Knoxville to Costa Rica.

  • How long is the flight from Knoxville to Costa Rica?

    Airlines like United Airlines, Delta, and American Airlines fly from Knoxville to Costa Rica in about 6h 31m. The time it takes to get you to your destination can typically vary by up to 10h 05m. The distance from Knoxville to Costa Rica is about 1744 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Knoxville to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Knoxville to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Costa Rica.

  • Can I find deals for business class flights from Knoxville to Costa Rica?

    Yes. Cheapflights offers flight deals from Knoxville to Costa Rica by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Costa Rica?

    Currently, April is the cheapest month in which you can book a flight from Knoxville to Costa Rica (average of $78). Flying from Knoxville to Costa Rica in March is currently the most expensive (average of $497). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$456Average$638FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$484Average$641FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$491Average$698FlexibilityNo cancel feeOn-time69%

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