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Cheap flights from Knoxville to Costa Rica from $322

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 8/18. 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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Find the cheapest flights from Knoxville to Costa Rica

Cheap round-trip flights

Logo
6:00 am - 10:32 amTYS-SJO
6h 32m1 stop
Logo
7:30 am - 5:38 pmSJO-TYS
8h 08m1 stop
$322
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Mon, Aug 18 - Mon, Aug 25
Logo
3:34 pm - 10:32 amTYS-SJO
20h 58m2 stops
Logo
7:30 am - 5:38 pmSJO-TYS
8h 08m1 stop
$329
Find Deal
Mon, Aug 18 - Mon, Aug 25
Logo
8:49 pm - 11:14 amTYS-SJO
16h 25m1 stop
Logo
12:19 pm - 3:41 pmSJO-TYS
25h 22m1 stop
$344
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Fri, Sep 5 - Fri, Sep 12
Logo
9:12 pm - 11:12 amTYS-SJO
16h 00m1 stop
Logo
5:10 pm - 4:47 pmSJO-TYS
21h 37m1 stop
$348
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Thu, Aug 21 - Thu, Aug 28
Logo
6:00 am - 10:32 amTYS-SJO
6h 32m1 stop
Logo
12:18 pm - 10:04 amSJO-TYS
19h 46m1 stop
$353
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Mon, Aug 18 - Tue, Aug 19
American Airlines Logo
12:29 pm - 11:00 pmTYS-SJO
11h 31m1 stop
American Airlines Logo
6:34 am - 3:23 pmSJO-TYS
7h 49m1 stop
$474American Airlines
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Tue, Feb 3 - Fri, Feb 13
American Airlines Logo
7:48 am - 7:35 pmTYS-SJO
12h 47m2 stops
American Airlines Logo
2:51 pm - 12:21 amSJO-TYS
8h 30m1 stop
$478American Airlines
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Wed, Dec 3 - Thu, Dec 11
Delta Logo
5:45 am - 12:08 pmTYS-SJO
8h 23m1 stop
Delta Logo
1:21 pm - 11:41 pmSJO-TYS
8h 20m1 stop
$492Delta
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Wed, Oct 1 - Mon, Oct 6
Delta Logo
7:45 am - 12:00 pmTYS-LIR
6h 15m1 stop
Delta Logo
1:05 pm - 11:07 pmLIR-TYS
8h 02m1 stop
$569Delta
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Sat, Oct 25 - Fri, Oct 31
Avianca Logo
5:45 am - 7:40 amTYS-SJO
27h 55m2 stops
Avianca Logo
1:40 am - 10:45 pmSJO-TYS
19h 05m2 stops
$814Avianca
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Sat, Sep 13 - Sun, Sep 21

Delta flights from Knoxville to Costa Rica

Our best Delta deals on Knoxville to Costa Rica flight tickets
Delta
Oct 1
TYS5:45 amKnoxville McGhee Tyson
8h 23m
1 stop
SJO12:08 pmSan José Juan Santamaria Intl
Oct 6
SJO1:21 pmSan José Juan Santamaria Intl
8h 20m
1 stop
TYS11:41 pmKnoxville McGhee Tyson
$492
Find similar
Delta
Oct 25
TYS7:45 amKnoxville McGhee Tyson
6h 15m
1 stop
LIR12:00 pmLiberia
Oct 31
LIR1:05 pmLiberia
8h 02m
1 stop
TYS11:07 pmKnoxville McGhee Tyson
$569
Find similar

American Airlines flights from Knoxville to Costa Rica

Our best American Airlines deals on Knoxville to Costa Rica flight tickets
American Airlines
Feb 3
TYS12:29 pmKnoxville McGhee Tyson
11h 31m
1 stop
SJO11:00 pmSan José Juan Santamaria Intl
Feb 13
SJO6:34 amSan José Juan Santamaria Intl
7h 49m
1 stop
TYS3:23 pmKnoxville McGhee Tyson
$474
Find similar
American Airlines
Dec 3
TYS7:48 amKnoxville McGhee Tyson
12h 47m
2 stops
SJO7:35 pmSan José Juan Santamaria Intl
Dec 11
SJO2:51 pmSan José Juan Santamaria Intl
8h 30m
1 stop
TYS12:21 amKnoxville McGhee Tyson
$478
Find similar
American Airlines
Oct 1
TYS5:05 amKnoxville McGhee Tyson
16h 37m
2 stops
SJO7:42 pmSan José Juan Santamaria Intl
Oct 6
SJO2:40 pmSan José Juan Santamaria Intl
6h 59m
1 stop
TYS11:39 pmKnoxville McGhee Tyson
$496
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 August 7, 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

Mon 8/18

6:00 am-10:32 am

1 stop6h 32m

San José Juan Santamaria Intl

Mon 8/25

7:30 am-5:38 pm

1 stop8h 08m

$322

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Mon 8/18

3:34 pm-10:32 am

2 stops20h 58m

San José Juan Santamaria Intl

Mon 8/25

7:30 am-5:38 pm

1 stop8h 08m

$329

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Fri 9/5

8:49 pm-11:14 am

1 stop16h 25m

San José Juan Santamaria Intl

Fri 9/12

12:19 pm-3:41 pm

1 stop25h 22m

$344

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Thu 8/21

9:12 pm-11:12 am

1 stop16h 00m

San José Juan Santamaria Intl

Thu 8/28

5:10 pm-4:47 pm

1 stop21h 37m

$348

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Mon 8/18

6:00 am-10:32 am

1 stop6h 32m

San José Juan Santamaria Intl

Tue 8/19

12:18 pm-10:04 am

1 stop19h 46m

$353

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Tue 2/3

12:29 pm-11:00 pm

1 stop11h 31m

San José Juan Santamaria Intl

Fri 2/13

6:34 am-3:23 pm

1 stop7h 49m

$474

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Wed 12/3

7:48 am-7:35 pm

2 stops12h 47m

San José Juan Santamaria Intl

Thu 12/11

2:51 pm-12:21 am

1 stop8h 30m

$478

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

1:21 pm-11:41 pm

1 stop8h 20m

$492

KnoxvilleLiberia

TYS - LIR

TYSLIR

Knoxville McGhee Tyson

Sat 10/25

7:45 am-12:00 pm

1 stop6h 15m

Liberia

Fri 10/31

1:05 pm-11:07 pm

1 stop8h 02m

$569

KnoxvilleSan José

TYS - SJO

TYSSJO

Knoxville McGhee Tyson

Sat 9/13

5:45 am-7:40 am

2 stops27h 55m

San José Juan Santamaria Intl

Sun 9/21

1:40 am-10:45 pm

2 stops19h 05m

$814

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 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 September is your next best option. Flight prices from Knoxville to Costa Rica during September average around $546.

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.

How far in advance should I book a flight to Costa Rica?

You are more likely to see cheaper flights to Costa Rica from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $677 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Knoxville for as low as $549 on momondo.

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

Best Price Found

$322

Fastest flight time

6h 15m

Direct flights

None

Airports in Costa Rica

2 airports
The best flight deal from Knoxville to Costa Rica found on momondo in the last 72 hours is $322
The fastest flight from Knoxville to Costa Rica takes 6h 15m
There are no direct flights from Knoxville to Costa Rica. Popular non-direct routes for this connection are Knoxville McGhee Tyson Airport - San José Juan Santamaria Intl Airport and Knoxville McGhee Tyson Airport - Liberia Airport.
There are 2 airports near Costa Rica: Liberia (LIR), San José Juan Santamaria Intl (SJO)
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  • 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
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $473Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $570Free CancellationRating
7.4
8,917 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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