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Cheap flights from Knoxville to Costa Rica from $222

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 3/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:30 am - 12:22 pm
TYS
-
SJO
28h 52m1 stop
Multiple Airlines Logo
1:30 pm - 12:49 pm
SJO
-
TYS
22h 19m2 stops
$385Multiple Airlines
vie., ene. 9 - sáb., ene. 17
Multiple Airlines Logo
8:30 am - 12:22 pm
TYS
-
SJO
28h 52m1 stop
Multiple Airlines Logo
1:30 pm - 8:39 am
SJO
-
TYS
18h 09m1 stop
$402Multiple Airlines
vie., ene. 9 - sáb., ene. 17
Multiple Airlines Logo
5:59 pm - 12:22 pm
TYS
-
SJO
19h 23m1 stop
Multiple Airlines Logo
1:30 pm - 12:49 pm
SJO
-
TYS
22h 19m2 stops
$408Multiple Airlines
sáb., ene. 10 - sáb., ene. 17
Multiple Airlines Logo
9:29 am - 11:37 am
TYS
-
SJO
27h 08m2 stops
Multiple Airlines Logo
1:31 pm - 12:41 pm
SJO
-
TYS
22h 10m1 stop
$409Multiple Airlines
dom., feb. 8 - dom., feb. 15
Multiple Airlines Logo
9:29 am - 11:37 am
TYS
-
SJO
27h 08m2 stops
Multiple Airlines Logo
1:30 pm - 8:39 am
SJO
-
TYS
18h 09m1 stop
$411Multiple Airlines
dom., ene. 11 - sáb., ene. 17
Multiple Airlines Logo
7:20 pm - 3:50 am
TYS
-
SJO
9h 30m1 stop
Multiple Airlines Logo
9:35 am - 7:50 pm
SJO
-
TYS
9h 15m2 stops
$419Multiple Airlines
lun., ene. 12 - jue., ene. 22
Multiple Airlines Logo
5:59 pm - 12:22 pm
TYS
-
SJO
19h 23m1 stop
Multiple Airlines Logo
1:30 pm - 8:39 am
SJO
-
TYS
18h 09m1 stop
$426Multiple Airlines
sáb., ene. 10 - sáb., ene. 17
Multiple Airlines Logo
8:30 am - 12:22 pm
TYS
-
SJO
28h 52m1 stop
Multiple Airlines Logo
7:50 pm - 12:10 pm
SJO
-
TYS
39h 20m2 stops
$427Multiple Airlines
vie., ene. 9 - dom., ene. 18
American Airlines Logo
6:00 am - 12:59 pm
TYS
-
LIR
8h 59m1 stop
American Airlines Logo
2:30 pm - 12:43 am
LIR
-
TYS
8h 13m1 stop
$537American Airlines
mié., jun. 24 - mar., jun. 30
American Airlines Logo
6:00 am - 12:59 pm
TYS
-
LIR
8h 59m1 stop
American Airlines Logo
12:55 pm - 10:15 am
LIR
-
TYS
19h 20m2 stops
$541American Airlines
mié., jun. 24 - mar., jun. 30

American Airlines flights from Knoxville to Costa Rica

Our best American Airlines deals on Knoxville to Costa Rica flight tickets
American Airlines
Jan 12
TYS7:44 amKnoxville McGhee Tyson
13h 00m
2 stops
SJO7:44 pmSan José Juan Santamaria Intl
Jan 22
SJO8:00 amSan José Juan Santamaria Intl
12h 44m
2 stops
TYS9:44 pmKnoxville McGhee Tyson
$499
Find similar
American Airlines
Mar 18
TYS10:40 amKnoxville McGhee Tyson
13h 03m
1 stop
SJO9:43 pmSan José Juan Santamaria Intl
Mar 25
SJO12:46 pmSan José Juan Santamaria Intl
8h 54m
1 stop
TYS11:40 pmKnoxville McGhee Tyson
$505
Find similar
American Airlines
Mar 18
TYS5:52 amKnoxville McGhee Tyson
9h 22m
2 stops
SJO1:14 pmSan José Juan Santamaria Intl
Mar 25
SJO12:46 pmSan José Juan Santamaria Intl
8h 54m
1 stop
TYS11:40 pmKnoxville McGhee Tyson
$510
Find similar

United Airlines flights from Knoxville to Costa Rica

Our best United Airlines deals on Knoxville to Costa Rica flight tickets
United Airlines
Feb 1
TYS6:59 amKnoxville McGhee Tyson
7h 11m
1 stop
LIR1:10 pmLiberia
Feb 5
LIR2:20 pmLiberia
8h 24m
1 stop
TYS11:44 pmKnoxville McGhee Tyson
$711
Find similar
United Airlines
May 3
TYS9:00 amKnoxville McGhee Tyson
7h 23m
1 stop
LIR2:23 pmLiberia
May 6
LIR1:20 pmLiberia
8h 20m
1 stop
TYS11:40 pmKnoxville McGhee Tyson
$924
Find similar
United Airlines
Dec 28
TYS7:00 amKnoxville McGhee Tyson
12h 16m
1 stop
SJO6:16 pmSan José Juan Santamaria Intl
Jan 2
SJO8:45 amSan José Juan Santamaria Intl
25h 26m
1 stop
TYS11:11 amKnoxville McGhee Tyson
$1,077
Find similar

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 diciembre 26, 2025.
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

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

vie. 1/9

8:30 am-12:22 pm

1 stop28h 52m

San José Juan Santamaria Intl

sáb. 1/17

1:30 pm-12:49 pm

2 stops22h 19m

$385

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

vie. 1/9

8:30 am-12:22 pm

1 stop28h 52m

San José Juan Santamaria Intl

sáb. 1/17

1:30 pm-8:39 am

1 stop18h 09m

$402

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

sáb. 1/10

5:59 pm-12:22 pm

1 stop19h 23m

San José Juan Santamaria Intl

sáb. 1/17

1:30 pm-12:49 pm

2 stops22h 19m

$408

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

dom. 2/8

9:29 am-11:37 am

2 stops27h 08m

San José Juan Santamaria Intl

dom. 2/15

1:31 pm-12:41 pm

1 stop22h 10m

$409

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

dom. 1/11

9:29 am-11:37 am

2 stops27h 08m

San José Juan Santamaria Intl

sáb. 1/17

1:30 pm-8:39 am

1 stop18h 09m

$411

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

lun. 1/12

7:20 pm-3:50 am

1 stop9h 30m

San José Juan Santamaria Intl

jue. 1/22

9:35 am-7:50 pm

2 stops9h 15m

$419

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

sáb. 1/10

5:59 pm-12:22 pm

1 stop19h 23m

San José Juan Santamaria Intl

sáb. 1/17

1:30 pm-8:39 am

1 stop18h 09m

$426

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

vie. 1/9

8:30 am-12:22 pm

1 stop28h 52m

San José Juan Santamaria Intl

dom. 1/18

7:50 pm-12:10 pm

2 stops39h 20m

$427

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

mié. 6/24

6:00 am-12:59 pm

1 stop8h 59m

Liberia

mar. 6/30

2:30 pm-12:43 am

1 stop8h 13m

$537

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

mié. 6/24

6:00 am-12:59 pm

1 stop8h 59m

Liberia

mar. 6/30

12:55 pm-10:15 am

2 stops19h 20m

$541

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.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Wednesday is the cheapest day to fly to Costa Rica from Knoxville. The lowest ticket price found for a Wednesday departure recently was $565. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $766. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

What is the cheapest time of day to depart on your flight to Costa Rica?

In the evening is the cheapest time of day to fly from Knoxville to Costa Rica when you can find flight prices for as low as $436. Flying to Costa Rica in the evening is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly in the morning, with an average ticket price of $675. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

7h 10m

Direct flights

None
The fastest flight from Knoxville to Costa Rica takes 7h 10m
There are no direct flights from Knoxville to Costa Rica. There are no popular flight routes from Knoxville to Costa Rica.
Search flight deals

  • 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
DeltaPriceFrom $456Free CancellationRating
7.9
8,013 reviews
Search Delta flights
American AirlinesPriceFrom $466Free CancellationRating
7.2
11,062 reviews
Search American Airlines flights
United AirlinesPriceFrom $491Free CancellationRating
7.4
9,115 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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