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$178+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SJO
févr. 28 — mars 71
sam. 2/28
sam. 3/7
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 janvier 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
lun. 2/237:22 pm
TYS
-
SJO
2 stops18h 00m
Multiple Airlines
dim. 3/112:35 pm
SJO
-
TYS
1 stop28h 56m
Multiple Airlines
Deal found 1/27$328
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
mar. 2/245:14 pm
TYS
-
SJO
2 stops20h 08m
Multiple Airlines
dim. 3/112:35 pm
SJO
-
TYS
1 stop28h 56m
Multiple Airlines
Deal found 1/27$351
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
sam. 2/212:54 pm
TYS
-
SJO
1 stop21h 46m
Multiple Airlines
dim. 3/112:35 pm
SJO
-
TYS
1 stop28h 56m
Multiple Airlines
Deal found 1/27$359
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
ven. 2/202:06 pm
TYS
-
SJO
1 stop22h 34m
Multiple Airlines
dim. 3/112:35 pm
SJO
-
TYS
1 stop28h 56m
Multiple Airlines
Deal found 1/27$366
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
sam. 2/212:54 pm
TYS
-
SJO
1 stop21h 46m
Multiple Airlines
ven. 2/2712:35 pm
SJO
-
TYS
1 stop29h 23m
Multiple Airlines
Deal found 1/27$387
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
jeu. 3/129:43 pm
TYS
-
SJO
1 stop15h 36m
Multiple Airlines
mer. 3/2512:24 pm
SJO
-
TYS
1 stop21h 39m
Multiple Airlines
Deal found 1/28$390
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
ven. 2/202:06 pm
TYS
-
SJO
1 stop22h 34m
Multiple Airlines
ven. 2/2712:35 pm
SJO
-
TYS
1 stop29h 23m
Multiple Airlines
Deal found 1/27$393
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
lun. 2/232:06 pm
TYS
-
SJO
1 stop22h 34m
Multiple Airlines
sam. 2/2812:35 pm
SJO
-
TYS
2 stops32h 32m
Multiple Airlines
Deal found 1/27$415
This American Airlines deal was found by Cheapflights users on 1/27. 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.
mar. 6/166:00 am
TYS
-
LIR
1 stop9h 08m
American Airlines
jeu. 6/252:45 pm
LIR
-
TYS
1 stop7h 14m
American Airlines
Deal found 1/27$558
This American Airlines deal was found by Cheapflights users on 1/27. 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.
lun. 4/206:54 am
TYS
-
LIR
1 stop6h 34m
American Airlines
lun. 4/272:40 pm
LIR
-
TYS
1 stop7h 19m
American Airlines
Deal found 1/27$587
This American Airlines deal was found by Cheapflights users on 1/28. 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.
mer. 6/246:00 am
TYS
-
LIR
1 stop7h 20m
American Airlines
mar. 6/302:45 pm
LIR
-
TYS
1 stop7h 14m
American Airlines
Deal found 1/28$590
This American Airlines deal was found by Cheapflights users on 1/28. 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.
mer. 7/16:00 am
TYS
-
LIR
1 stop7h 20m
American Airlines
mer. 7/82:45 pm
LIR
-
TYS
1 stop7h 14m
American Airlines
Deal found 1/28$626

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 janvier 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$328
(Kiwi.com)

One-way from

$178
(Kiwi.com)

Popular in

February

Cheapest in

August

Average price

$613
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.
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From Knoxville McGhee Tyson to Costa Rica
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One-way flight from Knoxville McGhee Tyson to Costa Rica
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 janvier 29, 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

ven. 2/20

2:06 pm-11:40 am

1 stop22h 34m

San José Juan Santamaria Intl

dim. 3/1

12:35 pm-6:31 pm

1 stop28h 56m

$366

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

sam. 2/21

9:24 pm-11:40 am

2 stops15h 16m

San José Juan Santamaria Intl

dim. 3/1

12:35 pm-6:31 pm

1 stop28h 56m

$375

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

sam. 2/21

2:54 pm-11:40 am

1 stop21h 46m

San José Juan Santamaria Intl

ven. 2/27

12:35 pm-6:58 pm

1 stop29h 23m

$387

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

jeu. 3/12

9:43 pm-11:19 am

1 stop15h 36m

San José Juan Santamaria Intl

mer. 3/25

12:24 pm-12:03 pm

1 stop21h 39m

$390

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

ven. 2/20

2:06 pm-11:40 am

1 stop22h 34m

San José Juan Santamaria Intl

ven. 2/27

12:35 pm-6:58 pm

1 stop29h 23m

$393

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

lun. 3/9

9:36 pm-11:22 am

1 stop15h 46m

San José Juan Santamaria Intl

dim. 3/15

11:38 am-10:59 am

1 stop21h 21m

$433

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

sam. 2/21

2:54 pm-11:40 am

1 stop21h 46m

San José Juan Santamaria Intl

sam. 2/28

12:35 pm-10:07 pm

2 stops32h 32m

$443

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

ven. 3/13

9:56 pm-11:19 am

2 stops39h 23m

San José Juan Santamaria Intl

jeu. 3/19

12:24 pm-10:26 pm

1 stop8h 02m

$458

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

lun. 2/23

2:06 pm-7:45 am

3 stops18h 39m

San José Juan Santamaria Intl

dim. 3/1

12:35 pm-6:31 pm

1 stop28h 56m

$474

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

lun. 4/20

5:57 pm-11:28 am

2 stops19h 31m

Liberia

lun. 4/27

2:40 pm-11:01 am

2 stops18h 21m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 18 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 $86). Flying from Knoxville to Costa Rica in September is currently the most expensive (average of $489). 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 janvier 29, 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
8,128 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
8,128 reviews
Delta
7.9
Good
8,128 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
9,215 reviews
Delta
7.9
Good
8,128 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
11,205 reviews
Delta
7.9
Good
8,128 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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 American Airlines fly from Knoxville to Costa Rica in about 19h 31m. The time it takes to get you to your destination can typically vary by up to . The distance from Knoxville to Costa Rica is about 1744 mi.

  • 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 $86). Flying from Knoxville to Costa Rica in September is currently the most expensive (average of $489). 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

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Alternative routes for Knoxville to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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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 janvier 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$324Average$648FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$484Average$647FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$491Average$698FlexibilityNo cancel feeOn-time69%

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