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Cheap flights from Knoxville to Costa Rica from $181

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Costa Rica departing on 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Knoxville to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:25 pm - 11:33 am
TYS
-
SJO
16h 08m
1 stop
Multiple Airlines Logo
1:00 pm - 12:25 pm
SJO
-
TYS
21h 25m
1 stop
$378Multiple Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
9:25 pm - 11:33 am
TYS
-
SJO
16h 08m
1 stop
Multiple Airlines Logo
1:00 pm - 5:30 pm
SJO
-
TYS
26h 30m
2 stops
$408Multiple Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
11:27 am - 11:40 pm
TYS
-
SJO
14h 13m
2 stops
Multiple Airlines Logo
1:00 pm - 12:25 pm
SJO
-
TYS
21h 25m
1 stop
$425Multiple Airlines
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
1:02 pm - 11:45 am
TYS
-
SJO
24h 43m
1 stop
Multiple Airlines Logo
9:35 am - 10:47 pm
SJO
-
TYS
11h 12m
1 stop
$426Multiple Airlines
Wed, Jun 10 - Sun, Jun 21
Multiple Airlines Logo
1:02 pm - 11:45 am
TYS
-
SJO
24h 43m
1 stop
Multiple Airlines Logo
5:05 am - 4:53 pm
SJO
-
TYS
33h 48m
2 stops
$446Multiple Airlines
Wed, Jun 10 - Sun, Jun 21
American Airlines Logo
7:27 pm - 11:22 am
TYS
-
LIR
17h 55m
2 stops
American Airlines Logo
12:35 pm - 10:38 am
LIR
-
TYS
20h 03m
2 stops
$633American Airlines
Mon, Jul 20 - Fri, Jul 24
American Airlines Logo
6:00 am - 1:18 pm
TYS
-
LIR
9h 18m
1 stop
American Airlines Logo
2:45 pm - 11:59 pm
LIR
-
TYS
7h 14m
1 stop
$637American Airlines
Tue, Jun 16 - Thu, Jun 25
American Airlines Logo
8:05 pm - 11:30 am
TYS
-
LIR
17h 25m
1 stop
American Airlines Logo
2:47 pm - 7:18 pm
LIR
-
TYS
26h 31m
1 stop
$641American Airlines
Mon, Jul 20 - Fri, Jul 24
American Airlines Logo
6:30 pm - 11:22 am
TYS
-
LIR
18h 52m
2 stops
American Airlines Logo
12:35 pm - 10:36 am
LIR
-
TYS
20h 01m
2 stops
$642American Airlines
Tue, Jun 16 - Thu, Jun 25
United Airlines Logo
7:19 pm - 12:10 pm
TYS
-
LIR
18h 51m
2 stops
United Airlines Logo
1:03 pm - 9:59 am
LIR
-
TYS
18h 56m
1 stop
$678United Airlines
Thu, Sep 10 - Sat, Sep 26

United Airlines flights from Knoxville to Costa Rica

Our best United Airlines deals on Knoxville to Costa Rica flight tickets
United Airlines
Apr 22
TYS7:05 amKnoxville McGhee Tyson
7h 16m
1 stop
SJO12:21 pmSan José Juan Santamaria Intl
May 6
SJO7:55 amSan José Juan Santamaria Intl
8h 16m
1 stop
TYS6:11 pmKnoxville McGhee Tyson
$616
United Airlines
Sep 10
TYS7:19 pmKnoxville McGhee Tyson
18h 51m
2 stops
LIR12:10 pmLiberia
Sep 26
LIR1:03 pmLiberia
18h 56m
1 stop
TYS9:59 amKnoxville McGhee Tyson
$678
United Airlines
Jul 2
TYS6:30 amKnoxville McGhee Tyson
18h 09m
2 stops
SJO10:39 pmSan José Juan Santamaria Intl
Jul 16
SJO11:13 amSan José Juan Santamaria Intl
20h 20m
2 stops
TYS9:33 amKnoxville McGhee Tyson
$755

Avianca flights from Knoxville to Costa Rica

Our best Avianca deals on Knoxville to Costa Rica flight tickets
Avianca
May 2
TYS7:18 pmKnoxville McGhee Tyson
18h 12m
2 stops
SJO11:30 amSan José Juan Santamaria Intl
May 5
SJO12:40 pmSan José Juan Santamaria Intl
20h 09m
3 stops
TYS10:49 amKnoxville McGhee Tyson
$767
Avianca
May 2
TYS7:18 pmKnoxville McGhee Tyson
42h 27m
3 stops
SJO11:45 amSan José Juan Santamaria Intl
May 5
SJO12:40 pmSan José Juan Santamaria Intl
20h 09m
3 stops
TYS10:49 amKnoxville McGhee Tyson
$785
Avianca
Apr 30
TYS7:18 pmKnoxville McGhee Tyson
18h 12m
2 stops
SJO11:30 amSan José Juan Santamaria Intl
May 7
SJO12:40 pmSan José Juan Santamaria Intl
44h 09m
3 stops
TYS10:49 amKnoxville McGhee Tyson
$841

momondo 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, momondo users made 832,500 searches. Data last updated April 1, 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

Price

Cheapest round-trip

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 4/30

9:25 pm-11:33 am

1 stop16h 08m

San José Juan Santamaria Intl

Thu 5/7

1:00 pm-12:25 pm

1 stop21h 25m

$378

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 4/30

9:25 pm-11:33 am

1 stop16h 08m

San José Juan Santamaria Intl

Thu 5/7

1:00 pm-5:30 pm

2 stops26h 30m

$408

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 5/7

11:27 am-11:40 pm

2 stops14h 13m

San José Juan Santamaria Intl

Thu 5/14

1:00 pm-12:25 pm

1 stop21h 25m

$425

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 6/10

1:02 pm-11:45 am

1 stop24h 43m

San José Juan Santamaria Intl

Sun 6/21

9:35 am-10:47 pm

1 stop11h 12m

$426

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 6/10

1:02 pm-11:45 am

1 stop24h 43m

San José Juan Santamaria Intl

Sun 6/21

5:05 am-4:53 pm

2 stops33h 48m

$446

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Mon 7/20

7:27 pm-11:22 am

2 stops17h 55m

Liberia

Fri 7/24

12:35 pm-10:38 am

2 stops20h 03m

$633
Quickest round-trip

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Tue 6/16

6:00 am-1:18 pm

1 stop9h 18m

Liberia

Thu 6/25

2:45 pm-11:59 pm

1 stop7h 14m

$637

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Mon 7/20

8:05 pm-11:30 am

1 stop17h 25m

Liberia

Fri 7/24

2:47 pm-7:18 pm

1 stop26h 31m

$641

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Tue 6/16

6:30 pm-11:22 am

2 stops18h 52m

Liberia

Thu 6/25

12:35 pm-10:36 am

2 stops20h 01m

$642

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Thu 9/10

7:19 pm-12:10 pm

2 stops18h 51m

Liberia

Sat 9/26

1:03 pm-9:59 am

1 stop18h 56m

$678

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Costa Rica from

How to get the cheapest flight ticket from Knoxville to Costa Rica

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Costa Rica?

The cheapest month to fly to Costa Rica from Knoxville is in August. Flight prices, which tend to average around $511, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in August, then November is your next best option. Flight prices from Knoxville to Costa Rica during November average around $530.

Cheap Knoxville to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Costa Rica

Fastest flight time

6h 31m

Direct flights

None
The fastest flight from Knoxville to Costa Rica takes 6h 31m
There are no direct flights from Knoxville to Costa Rica. There are no popular flight routes from Knoxville to Costa Rica.
Search flight deals

Frequently asked questions about flying from Knoxville to Costa Rica

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Costa Rica?

    Prices for flights from Knoxville McGhee Tyson Airport to Costa Rica are updated daily.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Costa Rica?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Costa Rica?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The travel and health documents you'll need for your trip to Costa Rica may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Costa Rica. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Knoxville to Costa Rica

Compare and see reviews for airlines that fly from Knoxville to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $484Free CancellationRating
7.1
11,544 reviews
Search American Airlines flights
United AirlinesPriceFrom $491Free CancellationRating
7.4
9,529 reviews
Search United Airlines flights
DeltaPriceFrom $536Free CancellationRating
7.9
8,368 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Costa Rica?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Knoxville to Costa Rica for you.

Can I find flights from Knoxville to Costa Rica with flexible booking policies on momondo?

All flight searches from Knoxville to Costa Rica on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Knoxville to Costa Rica?

momondo provides multiple filters to help you find the best flight to Costa Rica from Knoxville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Knoxville to Costa Rica right now. Can momondo alert me if prices change?

Price alerts on flights to Costa Rica from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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