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Cheap flights from Knoxville to Costa Rica from $540

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Costa Rica departing on 6/9. 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
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
4:45 pm - 3:11 pm
TYS
-
SJO
24h 26m
1 stop
Multiple Airlines Logo
7:07 am - 9:44 pm
SJO
-
TYS
12h 37m
1 stop
$540Multiple Airlines
Di, Jun 9 - Mo, Okt 26
Southwest Logo
8:00 am - 6:40 pm
TYS
-
SJO
12h 40m
2 stops
Southwest Logo
9:00 am - 9:45 pm
SJO
-
TYS
10h 45m
2 stops
$556Southwest
Mi, Sep 16 - So, Sep 20
Multiple Airlines Logo
7:27 pm - 3:11 pm
TYS
-
SJO
21h 44m
1 stop
Multiple Airlines Logo
7:07 am - 9:44 pm
SJO
-
TYS
12h 37m
1 stop
$559Multiple Airlines
Mo, Jun 8 - Mo, Okt 26
Multiple Airlines Logo
4:45 pm - 3:11 pm
TYS
-
SJO
24h 26m
1 stop
Multiple Airlines Logo
7:48 pm - 1:58 pm
SJO
-
TYS
16h 10m
2 stops
$567Multiple Airlines
Di, Jun 9 - Di, Okt 27
Multiple Airlines Logo
4:45 pm - 3:11 pm
TYS
-
SJO
24h 26m
1 stop
Multiple Airlines Logo
7:07 am - 9:41 pm
SJO
-
TYS
12h 34m
1 stop
$572Multiple Airlines
Di, Jun 9 - Fr, Okt 30
Multiple Airlines Logo
10:03 pm - 3:11 pm
TYS
-
SJO
19h 08m
1 stop
Multiple Airlines Logo
7:48 pm - 1:58 pm
SJO
-
TYS
16h 10m
2 stops
$586Multiple Airlines
Mo, Jun 8 - Di, Okt 27
Delta Logo
7:35 am - 12:00 pm
TYS
-
LIR
6h 25m
1 stop
Delta Logo
1:25 pm - 11:52 pm
LIR
-
TYS
8h 27m
1 stop
$656Delta
Mi, Jul 1 - Mi, Jul 8
American Airlines Logo
6:00 am - 11:22 am
TYS
-
LIR
7h 22m
1 stop
American Airlines Logo
1:15 pm - 11:35 pm
LIR
-
TYS
8h 20m
1 stop
$693American Airlines
Mo, Jun 8 - Mi, Okt 28
American Airlines Logo
6:00 am - 11:22 am
TYS
-
LIR
7h 22m
1 stop
American Airlines Logo
1:15 pm - 8:22 am
LIR
-
TYS
17h 07m
2 stops
$698American Airlines
Mo, Jun 8 - Mi, Okt 28
United Airlines Logo
7:20 pm - 12:10 pm
TYS
-
LIR
18h 50m
2 stops
United Airlines Logo
1:20 pm - 1:18 pm
LIR
-
TYS
21h 58m
2 stops
$771United Airlines
Mo, Sep 28 - Do, Okt 1

American Airlines flights from Knoxville to Costa Rica

Our best American Airlines deals on Knoxville to Costa Rica flight tickets
American Airlines
Aug 15
TYS8:11 pmKnoxville McGhee Tyson
18h 15m
1 stop
SJO12:26 pmSan José Juan Santamaria Intl
Aug 22
SJO2:52 pmSan José Juan Santamaria Intl
7h 07m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$640
American Airlines
Aug 15
TYS6:05 pmKnoxville McGhee Tyson
20h 21m
1 stop
SJO12:26 pmSan José Juan Santamaria Intl
Aug 22
SJO2:52 pmSan José Juan Santamaria Intl
18h 00m
2 stops
TYS10:52 amKnoxville McGhee Tyson
$650
American Airlines
May 26
TYS6:07 pmKnoxville McGhee Tyson
21h 02m
2 stops
SJO1:09 pmSan José Juan Santamaria Intl
Jun 2
SJO7:00 amSan José Juan Santamaria Intl
14h 59m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
$661

Southwest flights from Knoxville to Costa Rica

Our best Southwest deals on Knoxville to Costa Rica flight tickets
Southwest
Sep 16
TYS8:00 amKnoxville McGhee Tyson
12h 40m
2 stops
SJO6:40 pmSan José Juan Santamaria Intl
Sep 20
SJO9:00 amSan José Juan Santamaria Intl
10h 45m
2 stops
TYS9:45 pmKnoxville McGhee Tyson
$556
Southwest
Sep 17
TYS7:10 amKnoxville McGhee Tyson
13h 30m
2 stops
SJO6:40 pmSan José Juan Santamaria Intl
Sep 20
SJO9:00 amSan José Juan Santamaria Intl
10h 45m
2 stops
TYS9:45 pmKnoxville McGhee Tyson
$588
Southwest
Jun 8
TYS6:40 amKnoxville McGhee Tyson
15h 00m
2 stops
SJO7:40 pmSan José Juan Santamaria Intl
Oct 28
SJO9:00 amSan José Juan Santamaria Intl
10h 15m
2 stops
TYS9:15 pmKnoxville McGhee Tyson
$668

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 Mai 13, 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

Di 6/9

4:45 pm-3:11 pm

1 stop24h 26m

San José Juan Santamaria Intl

Mo 10/26

7:07 am-9:44 pm

1 stop12h 37m

$540

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Mi 9/16

8:00 am-6:40 pm

2 stops12h 40m

San José Juan Santamaria Intl

So 9/20

9:00 am-9:45 pm

2 stops10h 45m

$556

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Mo 6/8

7:27 pm-3:11 pm

1 stop21h 44m

San José Juan Santamaria Intl

Mo 10/26

7:07 am-9:44 pm

1 stop12h 37m

$559

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Di 6/9

4:45 pm-3:11 pm

1 stop24h 26m

San José Juan Santamaria Intl

Di 10/27

7:48 pm-1:58 pm

2 stops16h 10m

$567

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Di 6/9

4:45 pm-3:11 pm

1 stop24h 26m

San José Juan Santamaria Intl

Fr 10/30

7:07 am-9:41 pm

1 stop12h 34m

$572

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Mo 6/8

10:03 pm-3:11 pm

1 stop19h 08m

San José Juan Santamaria Intl

Di 10/27

7:48 pm-1:58 pm

2 stops16h 10m

$586
Quickest round-trip

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Mi 7/1

7:35 am-12:00 pm

1 stop6h 25m

Liberia

Mi 7/8

1:25 pm-11:52 pm

1 stop8h 27m

$656

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Mo 6/8

6:00 am-11:22 am

1 stop7h 22m

Liberia

Mi 10/28

1:15 pm-11:35 pm

1 stop8h 20m

$693

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Mo 6/8

6:00 am-11:22 am

1 stop7h 22m

Liberia

Mi 10/28

1:15 pm-8:22 am

2 stops17h 07m

$698

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Mo 9/28

7:20 pm-12:10 pm

2 stops18h 50m

Liberia

Do 10/1

1:20 pm-1:18 pm

2 stops21h 58m

$771

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 December. Flight prices, which tend to average around $324, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in December, then November is your next best option. Flight prices from Knoxville to Costa Rica during November average around $471.

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 25m

Direct flights

None
The fastest flight from Knoxville to Costa Rica takes 6h 25m
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 $491Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
DeltaPriceFrom $536Free CancellationRating
7.9
8,450 reviews
Search Delta flights
United AirlinesPriceFrom $550Free CancellationRating
7.4
9,706 reviews
Search United Airlines 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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1 adult
Fr 6/12
Fr 6/19
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