HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Costa Rica

$144+ Cheap flights from Sky Harbor Intl (PHX) to Costa Rica

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SJO
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sky Harbor Intl to Costa Rica with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Sky Harbor Intl to Costa Rica

Cheapest flights from Sky Harbor Intl to Costa Rica
Explore the most affordable flight options available from Sky Harbor Intl to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:40 am
PHX
-
SJO
1 stop9h 59m
United Airlines
Wed 3/115:30 am
SJO
-
PHX
1 stop11h 25m
United Airlines
Deal found 1/26$335
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/259:40 am
PHX
-
LIR
1 stop7h 57m
United Airlines
Wed 3/48:35 am
LIR
-
PHX
2 stops15h 15m
United Airlines
Deal found 1/26$343
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 pm
PHX
-
SJO
2 stops40h 40m
Multiple Airlines
Wed 3/412:35 pm
SJO
-
PHX
1 stop10h 37m
Multiple Airlines
Deal found 1/25$344
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:30 am
PHX
-
SJO
1 stop8h 09m
United Airlines
Mon 3/98:40 am
SJO
-
PHX
1 stop13h 10m
United Airlines
Deal found 1/26$345
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:40 am
PHX
-
SJO
2 stops10h 36m
United Airlines
Tue 3/177:45 am
SJO
-
PHX
1 stop9h 10m
United Airlines
Deal found 1/25$346
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2310:55 pm
PHX
-
LIR
1 stop12h 15m
American Airlines
Wed 3/43:32 pm
LIR
-
PHX
1 stop17h 15m
American Airlines
Deal found 1/26$349
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:40 am
PHX
-
LIR
2 stops10h 57m
United Airlines
Wed 3/117:35 am
LIR
-
PHX
1 stop9h 20m
United Airlines
Deal found 1/25$350
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2311:59 pm
PHX
-
SJO
1 stop10h 41m
Multiple Airlines
Mon 3/21:31 pm
SJO
-
PHX
2 stops49h 13m
Multiple Airlines
Deal found 1/25$354
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:35 pm
PHX
-
SJO
1 stop15h 49m
American Airlines
Mon 3/92:20 pm
SJO
-
PHX
1 stop10h 24m
American Airlines
Deal found 1/25$355
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:35 pm
PHX
-
SJO
1 stop15h 50m
American Airlines
Mon 3/1611:35 pm
SJO
-
PHX
1 stop17h 02m
American Airlines
Deal found 1/25$356
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:35 pm
PHX
-
SJO
1 stop15h 49m
American Airlines
Sun 3/811:35 pm
SJO
-
PHX
1 stop18h 47m
American Airlines
Deal found 1/25$360
This American Airlines deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:00 pm
PHX
-
SJO
1 stop14h 08m
American Airlines
Tue 5/56:30 am
SJO
-
PHX
2 stops13h 49m
American Airlines
Deal found 1/23$361

Find flight deals from Sky Harbor Intl to Costa Rica

Keep the following information in mind while searching for Sky Harbor Intl to Costa Rica flight deals. Data was last updated January 26, 2026.

Round-trip from

$335
(United Airlines)

One-way from

$144
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$505
From Phoenix Sky Harbor Intl to Costa Rica
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Costa Rica
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl 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, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Costa Rica that are best for you.

Fly from

Sky Harbor Intl

Fly to

Costa Rica

Route

Depart

Return

Price

PhoenixSan José

PHX - SJO

PHXSJO

Phoenix Sky Harbor Intl

Wed 3/4

9:40 am-8:39 pm

1 stop9h 59m

San José Juan Santamaria Intl

Wed 3/11

5:30 am-3:55 pm

1 stop11h 25m

$335

PhoenixLiberia

PHX - LIR

PHXLIR

Phoenix Sky Harbor Intl

Wed 2/25

9:40 am-6:37 pm

1 stop7h 57m

Liberia

Wed 3/4

8:35 am-10:50 pm

2 stops15h 15m

$343

PhoenixLiberia

PHX - LIR

PHXLIR

Phoenix Sky Harbor Intl

Tue 2/24

12:59 am-12:37 pm

1 stop10h 38m

Liberia

Wed 3/4

3:32 pm-7:47 am

1 stop17h 15m

$349

PhoenixLiberia

PHX - LIR

PHXLIR

Phoenix Sky Harbor Intl

Wed 3/4

7:00 am-6:37 pm

1 stop10h 37m

Liberia

Wed 3/11

7:35 am-3:55 pm

1 stop9h 20m

$350

PhoenixSan José

PHX - SJO

PHXSJO

Phoenix Sky Harbor Intl

Fri 4/24

3:48 pm-5:30 am

1 stop12h 42m

San José Juan Santamaria Intl

Tue 4/28

7:55 am-6:06 pm

1 stop11h 11m

$356

PhoenixSan José

PHX - SJO

PHXSJO

Phoenix Sky Harbor Intl

Tue 5/19

10:30 am-7:37 pm

1 stop8h 07m

San José Juan Santamaria Intl

Sat 5/30

6:00 am-5:58 pm

1 stop12h 58m

$366

PhoenixLiberia

PHX - LIR

PHXLIR

Phoenix Sky Harbor Intl

Wed 3/4

6:40 am-6:37 pm

2 stops10h 57m

Liberia

Mon 3/9

11:35 am-9:44 pm

1 stop11h 09m

$380

PhoenixLiberia

PHX - LIR

PHXLIR

Phoenix Sky Harbor Intl

Tue 4/7

7:38 pm-12:10 pm

2 stops15h 32m

Liberia

Mon 4/20

3:25 pm-10:48 am

2 stops20h 23m

$385

PhoenixSan José

PHX - SJO

PHXSJO

Phoenix Sky Harbor Intl

Thu 4/16

7:38 pm-7:15 am

1 stop10h 37m

San José Juan Santamaria Intl

Thu 4/23

11:13 am-9:41 pm

1 stop11h 28m

$396

PhoenixSan José

PHX - SJO

PHXSJO

Phoenix Sky Harbor Intl

Tue 5/12

11:55 pm-12:10 pm

1 stop11h 15m

San José Juan Santamaria Intl

Mon 5/18

1:10 pm-9:10 pm

1 stop9h 00m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 33 results
1
2
3
4

Best time to book a flight from Sky Harbor Intl to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Sky Harbor Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Costa Rica

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Costa Rica?

Currently, September is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Costa Rica (average of $288). Flying from Phoenix Sky Harbor Intl Airport to Costa Rica in June is currently the most expensive (average of $406). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Costa Rica. Reviews last updated January 26, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Phoenix Sky Harbor Intl Airport to Costa Rica. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,111 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,199 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,189 reviews
Southwest
8.0
Very good
4,268 reviews

Food

7.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Costa Rica?

    There are many flights that can get you from Phoenix Sky Harbor Intl Airport to Costa Rica in 9h 59m. Fly via United Airlines or Southwest to get the fastest option. There are 2392 mi between Phoenix Sky Harbor Intl Airport and Costa Rica. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Costa Rica one-way?

    The cheapest airlines for a one-way flight from Phoenix Sky Harbor Intl Airport to Costa Rica are American Airlines ($150), United Airlines ($150), and Delta ($150).

  • Can I find deals for flights from Sky Harbor Intl to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Costa Rica.

  • Can I find deals for business class flights from Sky Harbor Intl to Costa Rica?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Costa Rica by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Costa Rica (average of $288). Flying from Phoenix Sky Harbor Intl Airport to Costa Rica in June is currently the most expensive (average of $406). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Sky Harbor Intl to Costa Rica

Discover the top 4 airlines that operate flights from Sky Harbor Intl to Costa Rica. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$164Average$572FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$344Average$582FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$354Average$595FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$358Average$580FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.