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Cheap flights from Knoxville to Costa Rica from $288

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 11/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Multiple Airlines Logo
9:09 pm - 12:14 pmTYS-SJO
16h 05m1 stop
Multiple Airlines Logo
1:19 pm - 9:04 amSJO-TYS
18h 45m1 stop
$288Multiple Airlines
Find Deal
Fri, Nov 7 - Sat, Nov 15
Multiple Airlines Logo
9:09 pm - 11:27 amTYS-SJO
15h 18m2 stops
Multiple Airlines Logo
1:19 pm - 9:04 amSJO-TYS
18h 45m1 stop
$309Multiple Airlines
Find Deal
Fri, Nov 7 - Sat, Nov 15
Multiple Airlines Logo
9:09 pm - 12:14 pmTYS-SJO
16h 05m1 stop
Multiple Airlines Logo
1:19 pm - 10:04 amSJO-TYS
19h 45m1 stop
$349Multiple Airlines
Find Deal
Fri, Nov 7 - Fri, Nov 14
Multiple Airlines Logo
9:09 pm - 11:27 amTYS-SJO
15h 18m2 stops
Multiple Airlines Logo
1:19 pm - 10:04 amSJO-TYS
19h 45m1 stop
$365Multiple Airlines
Find Deal
Fri, Nov 7 - Fri, Nov 14
Multiple Airlines Logo
9:01 pm - 11:30 amTYS-SJO
16h 29m1 stop
Multiple Airlines Logo
11:37 am - 1:03 pmSJO-TYS
23h 26m1 stop
$373Multiple Airlines
Find Deal
Thu, Oct 16 - Sun, Oct 19
American Airlines Logo
12:10 pm - 9:11 pmTYS-SJO
10h 01m1 stop
American Airlines Logo
3:06 pm - 9:54 amSJO-TYS
17h 48m1 stop
$494American Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 11
American Airlines Logo
7:38 am - 8:49 pmTYS-SJO
14h 11m2 stops
American Airlines Logo
7:00 am - 9:38 pmSJO-TYS
13h 38m2 stops
$498American Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 11
Delta Logo
5:45 am - 12:08 pmTYS-SJO
8h 23m1 stop
Delta Logo
1:23 pm - 11:46 pmSJO-TYS
8h 23m1 stop
$512Delta
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Wed, Oct 1 - Mon, Oct 6
United Airlines Logo
7:00 am - 6:37 pmTYS-LIR
12h 37m1 stop
United Airlines Logo
8:35 am - 8:09 pmLIR-TYS
10h 34m1 stop
$598United Airlines
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Fri, Nov 7 - Fri, Nov 14
United Airlines Logo
7:15 am - 12:10 pmTYS-LIR
6h 55m1 stop
United Airlines Logo
1:03 pm - 10:10 amLIR-TYS
19h 07m1 stop
$850United Airlines
Find Deal
Sun, Oct 12 - Sat, Oct 18

American Airlines flights from Knoxville to Costa Rica

Our best American Airlines deals on Knoxville to Costa Rica flight tickets
American Airlines
Dec 3
TYS12:10 pmKnoxville McGhee Tyson
10h 01m
1 stop
SJO9:11 pmSan José Juan Santamaria Intl
Dec 11
SJO3:06 pmSan José Juan Santamaria Intl
17h 48m
1 stop
TYS9:54 amKnoxville McGhee Tyson
$494
Find similar
American Airlines
Dec 3
TYS7:38 amKnoxville McGhee Tyson
14h 11m
2 stops
SJO8:49 pmSan José Juan Santamaria Intl
Dec 11
SJO7:00 amSan José Juan Santamaria Intl
13h 38m
2 stops
TYS9:38 pmKnoxville McGhee Tyson
$498
Find similar
American Airlines
Oct 1
TYS7:18 amKnoxville McGhee Tyson
14h 24m
2 stops
SJO7:42 pmSan José Juan Santamaria Intl
Oct 6
SJO6:00 amSan José Juan Santamaria Intl
9h 32m
1 stop
TYS5:32 pmKnoxville McGhee Tyson
$516
Find similar

Avianca flights from Knoxville to Costa Rica

Our best Avianca deals on Knoxville to Costa Rica flight tickets
Avianca
Oct 1
TYS9:55 amKnoxville McGhee Tyson
15h 40m
2 stops
SJO11:35 pmSan José Juan Santamaria Intl
Oct 5
SJO1:40 amSan José Juan Santamaria Intl
17h 31m
2 stops
TYS9:11 pmKnoxville McGhee Tyson
$1,290
Find similar
Avianca
Oct 1
TYS9:55 amKnoxville McGhee Tyson
15h 40m
2 stops
SJO11:35 pmSan José Juan Santamaria Intl
Oct 5
SJO1:40 amSan José Juan Santamaria Intl
17h 31m
2 stops
TYS9:11 pmKnoxville McGhee Tyson
$1,296
Find similar
Avianca
Oct 1
TYS9:55 amKnoxville McGhee Tyson
15h 40m
2 stops
SJO11:35 pmSan José Juan Santamaria Intl
Oct 5
SJO1:40 amSan José Juan Santamaria Intl
17h 31m
2 stops
TYS9:11 pmKnoxville McGhee Tyson
$1,400
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 September 24, 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

Fri 11/7

9:09 pm-12:14 pm

1 stop16h 05m

San José Juan Santamaria Intl

Sat 11/15

1:19 pm-9:04 am

1 stop18h 45m

$288

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Fri 11/7

9:09 pm-11:27 am

2 stops15h 18m

San José Juan Santamaria Intl

Sat 11/15

1:19 pm-9:04 am

1 stop18h 45m

$309

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Fri 11/7

9:09 pm-12:14 pm

1 stop16h 05m

San José Juan Santamaria Intl

Fri 11/14

1:19 pm-10:04 am

1 stop19h 45m

$349

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Fri 11/7

9:09 pm-11:27 am

2 stops15h 18m

San José Juan Santamaria Intl

Fri 11/14

1:19 pm-10:04 am

1 stop19h 45m

$365

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 10/16

9:01 pm-11:30 am

1 stop16h 29m

San José Juan Santamaria Intl

Sun 10/19

11:37 am-1:03 pm

1 stop23h 26m

$373

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 12/3

12:10 pm-9:11 pm

1 stop10h 01m

San José Juan Santamaria Intl

Thu 12/11

3:06 pm-9:54 am

1 stop17h 48m

$494

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 12/3

7:38 am-8:49 pm

2 stops14h 11m

San José Juan Santamaria Intl

Thu 12/11

7:00 am-9:38 pm

2 stops13h 38m

$498

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 10/1

5:45 am-12:08 pm

1 stop8h 23m

San José Juan Santamaria Intl

Mon 10/6

1:23 pm-11:46 pm

1 stop8h 23m

$512

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Fri 11/7

7:00 am-6:37 pm

1 stop12h 37m

Liberia

Fri 11/14

8:35 am-8:09 pm

1 stop10h 34m

$598

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Sun 10/12

7:15 am-12:10 pm

1 stop6h 55m

Liberia

Sat 10/18

1:03 pm-10:10 am

1 stop19h 07m

$850

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 March is your next best option. Flight prices from Knoxville to Costa Rica during March average around $606.

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

Direct flights

None
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 $463Free CancellationRating
7.9
7,973 reviews
Search Delta flights
American AirlinesPriceFrom $484Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $491Free CancellationRating
7.4
8,928 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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