$123 Find Cheap Flights from Knoxville to Costa Rica

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Costa Rica departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Best Costa Rica Flight Deals from Knoxville

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San José
San José1 stop$303
Liberia
Liberia1 stop$527
San José
San José1 stop$303
Liberia
Liberia1 stop$527

Cheap Flights from Knoxville to Costa Rica (TYS-CR0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Costa Rica that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Costa Rica

Wed, Jul 2 - Thu, Jul 17
 Logo
7:01 pm - 10:36 amTYS-SJO
17h 35m1 stop
 Logo
11:24 am - 10:11 amSJO-TYS
20h 47m1 stop
Wed, Jul 2 - Sun, Jul 20
 Logo
1:06 pm - 11:19 amTYS-SJO
24h 13m2 stops
 Logo
11:24 am - 11:37 pmSJO-TYS
10h 13m1 stop
Tue, Nov 4 - Wed, Nov 12
Delta Logo
5:30 am - 12:48 pmTYS-SJO
8h 18m1 stop
Delta Logo
2:17 pm - 11:46 pmSJO-TYS
8h 29m1 stop
$454Delta
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Tue, Nov 4 - Sat, Nov 15
Delta Logo
5:30 am - 12:48 pmTYS-SJO
8h 18m1 stop
Delta Logo
7:00 am - 5:17 pmSJO-TYS
9h 17m1 stop
$472Delta
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Sat, Nov 1 - Sat, Nov 15
American Airlines Logo
6:22 pm - 12:05 pmTYS-SJO
19h 43m2 stops
American Airlines Logo
6:29 am - 3:21 pmSJO-TYS
7h 52m1 stop
$476American Airlines
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Sun, Sep 7 - Sat, Sep 13
American Airlines Logo
6:08 am - 1:01 pmTYS-LIR
8h 53m1 stop
American Airlines Logo
2:55 pm - 8:30 amLIR-TYS
15h 35m1 stop
$527American Airlines
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Tue, Nov 4 - Tue, Nov 18
Avianca Logo
7:10 pm - 7:35 amTYS-SJO
13h 25m2 stops
Avianca Logo
4:40 pm - 9:45 amSJO-TYS
16h 05m2 stops
$528Avianca
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Sat, Nov 1 - Tue, Nov 18
Avianca Logo
2:55 pm - 7:35 amTYS-SJO
18h 40m2 stops
Avianca Logo
4:40 pm - 9:45 amSJO-TYS
16h 05m2 stops
$558Avianca
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Fri, Oct 31 - Fri, Nov 14
United Airlines Logo
7:00 am - 12:17 pmTYS-SJO
7h 17m1 stop
United Airlines Logo
2:20 pm - 11:19 pmSJO-TYS
7h 59m1 stop
$562United Airlines
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Thu, Oct 30 - Fri, Nov 14
United Airlines Logo
9:15 am - 10:25 amTYS-SJO
27h 10m1 stop
United Airlines Logo
2:20 pm - 11:19 pmSJO-TYS
7h 59m1 stop
$572United Airlines
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KAYAK's insights & trends for Knoxville to Costa Rica flights

Get data-powered insights and trends into flights from Knoxville to Costa Rica to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Knoxville to Costa Rica?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Costa Rica, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to Costa Rica is August, when tickets cost $511 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $1,318 and $748 respectively.

What’s the cheapest day of the week to fly from Knoxville to Costa Rica?

The average price of all round-trip flights from Knoxville to Costa Rica clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Costa Rica on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Knoxville to Costa Rica. For your return ticket, we recommend flying on a Monday and avoiding Saturdays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to Costa Rica, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Knoxville to Costa Rica, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.


Good to know

Low seasonSeptember
High seasonJuly
Cheapest flight$123
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Knoxville to San José

FAQs - booking Costa Rica flights

  • How does KAYAK find such low prices on flights from Knoxville to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Knoxville to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Knoxville to Costa Rica with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Knoxville to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Costa Rica?

    The cheapest time of day to fly to Costa Rica is generally at night, when round-trip flights cost $436 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the morning, which is peak travel time and where the average cost of a ticket is $675.

Top 3 airlines serving from Knoxville to Costa Rica

Need help choosing which airline to fly with from Knoxville to Costa Rica? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7953 reviews
7.3Food
8.5Crew
7.9Entertainment
7.9Comfort
8.2Boarding
Airline reviews

I always fly Delta main cabin and pay to upgrade my seat to preferred/extra leg room. However this time even with the buying the upgraded seat I was extremely cramped with very little legroom and unable to move comfortably. For some reason meal service was very early in the flight and my row seemed to have been skipped. Most of my attendant calls were unanswered. I was unable to get extra water, or crackers/snacks to make up for my missed meal. I always carry protein bars in my personal bag, but with no extra legroom I wasn’t able to access from underseat in front of me. I am unable to sleep while flying so I read and count on in flight entertainment. However the passenger in front of me reclined their seat fully preventing me from being able to view the screen or be able to rest my book on tray table to read. One of the first times I’ve been completely disappointed in Delta. I fly internationally 2-3 times a year.

6.0 GoodCynthia, May 2025MSP - AMS
Read more Delta reviews

I always fly Delta main cabin and pay to upgrade my seat to preferred/extra leg room. However this time even with the buying the upgraded seat I was extremely cramped with very little legroom and unable to move comfortably. For some reason meal service was very early in the flight and my row seemed to have been skipped. Most of my attendant calls were unanswered. I was unable to get extra water, or crackers/snacks to make up for my missed meal. I always carry protein bars in my personal bag, but with no extra legroom I wasn’t able to access from underseat in front of me. I am unable to sleep while flying so I read and count on in flight entertainment. However the passenger in front of me reclined their seat fully preventing me from being able to view the screen or be able to rest my book on tray table to read. One of the first times I’ve been completely disappointed in Delta. I fly internationally 2-3 times a year.

Good flights. On time. They had a gluten free snack option which was nice

Take this flight once or twice a month. Just don’t cut it from the schedule.

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Food from the flight from Atlanta to Santiago was very poor..

Flight was delayed due to weather. Crew did a nice job of making us comfortable. No complain complaints.

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Delay and keep changing gates. I have to run around from B to C then to E.

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Not really their fault, but a 4.5 hour delay is pretty brutal

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Waited on the runway for takeoff for 2.5 hours. Air traffic rerouted us. The plane didn't have enough fuel, so had to go back to the gate. Had to wait for a new pilot. Should have landed at 5:22. Didn't land until 9:10. Trash flight.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Eventless. It was a good flight and good crew. Can’t complaint.

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

Everything you need to know for your flight from Knoxville to Costa Rica

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