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Cheap flights from Philadelphia to Costa Rica from $178

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Costa Rica departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 am - 11:29 am
PHL
-
LIR
7h 29m
1 stop
American Airlines Logo
2:47 pm - 12:56 am
LIR
-
PHL
8h 09m
1 stop
$388American Airlines
Tue, Aug 25 - Thu, Sep 24
American Airlines Logo
9:50 pm - 11:29 am
PHL
-
LIR
15h 39m
1 stop
American Airlines Logo
2:47 pm - 9:36 am
LIR
-
PHL
16h 49m
1 stop
$388American Airlines
Tue, Aug 25 - Thu, Sep 24
United Airlines Logo
7:30 pm - 12:10 pm
PHL
-
LIR
18h 40m
2 stops
United Airlines Logo
1:03 pm - 10:11 am
LIR
-
PHL
19h 08m
1 stop
$393United Airlines
Tue, Oct 6 - Sat, Oct 10
United Airlines Logo
6:16 am - 12:10 pm
PHL
-
LIR
7h 54m
1 stop
United Airlines Logo
8:45 am - 10:57 pm
LIR
-
PHL
13h 12m
1 stop
$393United Airlines
Tue, Sep 8 - Mon, Nov 23
JetBlue Logo
6:00 am - 1:01 pm
PHL
-
LIR
9h 01m
1 stop
JetBlue Logo
2:06 pm - 11:53 pm
LIR
-
PHL
7h 47m
1 stop
$397JetBlue
Fri, Aug 28 - Sat, Sep 5
JetBlue Logo
8:00 am - 1:01 pm
PHL
-
LIR
7h 01m
1 stop
JetBlue Logo
2:06 pm - 11:53 pm
LIR
-
PHL
7h 47m
1 stop
$397JetBlue
Sun, Aug 30 - Sat, Sep 5
Delta Logo
6:15 am - 12:00 pm
PHL
-
LIR
7h 45m
1 stop
Delta Logo
1:25 pm - 1:19 am
LIR
-
PHL
9h 54m
1 stop
$402Delta
Mon, Aug 31 - Fri, Sep 4
Delta Logo
6:15 am - 12:00 pm
PHL
-
LIR
7h 45m
1 stop
Delta Logo
1:25 pm - 1:19 am
LIR
-
PHL
9h 54m
1 stop
$402Delta
Mon, Aug 31 - Thu, Sep 3
Air Canada Logo
9:15 am - 2:10 pm
PHL
-
LIR
29h 55m
1 stop
Air Canada Logo
3:10 pm - 4:21 pm
LIR
-
PHL
24h 11m
1 stop
$415Air Canada
Thu, Nov 5 - Sun, Nov 8
Air Canada Logo
9:15 am - 2:10 pm
PHL
-
LIR
29h 55m
1 stop
Air Canada Logo
3:10 pm - 2:44 pm
LIR
-
PHL
22h 34m
2 stops
$418Air Canada
Thu, Nov 5 - Sun, Nov 8

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Frontier flights from Philadelphia to Costa Rica

Our best Frontier deals on Philadelphia to Costa Rica flight tickets
Frontier
Aug 8
PHL9:16 pmPhiladelphia
13h 04m
1 stop
SJO8:20 amSan José Juan Santamaria Intl
Aug 16
SJO9:35 amSan José Juan Santamaria Intl
19h 40m
2 stops
PHL7:15 amPhiladelphia
$590
Frontier
Aug 8
PHL9:16 pmPhiladelphia
13h 04m
1 stop
SJO8:20 amSan José Juan Santamaria Intl
Aug 16
SJO9:35 amSan José Juan Santamaria Intl
24h 05m
1 stop
PHL11:40 amPhiladelphia
$608
Frontier
Aug 8
PHL7:20 amPhiladelphia
27h 00m
2 stops
SJO8:20 amSan José Juan Santamaria Intl
Aug 16
SJO9:35 amSan José Juan Santamaria Intl
19h 40m
2 stops
PHL7:15 amPhiladelphia
$612

American Airlines flights from Philadelphia to Costa Rica

Our best American Airlines deals on Philadelphia to Costa Rica flight tickets
American Airlines
Aug 25
PHL6:00 amPhiladelphia
7h 29m
1 stop
LIR11:29 amLiberia
Sep 24
LIR2:47 pmLiberia
8h 09m
1 stop
PHL12:56 amPhiladelphia
$388
American Airlines
Jan 26
PHL5:00 amPhiladelphia
8h 12m
1 stop
LIR12:12 pmLiberia
Feb 2
LIR3:10 pmLiberia
16h 53m
1 stop
PHL9:03 amPhiladelphia
$390
American Airlines
Aug 25
PHL6:00 amPhiladelphia
7h 29m
1 stop
LIR11:29 amLiberia
Sep 24
LIR2:47 pmLiberia
18h 28m
2 stops
PHL11:15 amPhiladelphia
$393

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 1, 2026.
Use the filters below to find and compare flights from Philadelphia to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Tue 8/25

6:00 am-11:29 am

1 stop7h 29m

Liberia

Thu 9/24

2:47 pm-12:56 am

1 stop8h 09m

$388

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Tue 8/25

9:50 pm-11:29 am

1 stop15h 39m

Liberia

Thu 9/24

2:47 pm-9:36 am

1 stop16h 49m

$388

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Tue 10/6

7:30 pm-12:10 pm

2 stops18h 40m

Liberia

Sat 10/10

1:03 pm-10:11 am

1 stop19h 08m

$393

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Tue 9/8

6:16 am-12:10 pm

1 stop7h 54m

Liberia

Mon 11/23

8:45 am-10:57 pm

1 stop13h 12m

$393

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Fri 8/28

6:00 am-1:01 pm

1 stop9h 01m

Liberia

Sat 9/5

2:06 pm-11:53 pm

1 stop7h 47m

$397
Quickest round-trip

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Sun 8/30

8:00 am-1:01 pm

1 stop7h 01m

Liberia

Sat 9/5

2:06 pm-11:53 pm

1 stop7h 47m

$397

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Mon 8/31

6:15 am-12:00 pm

1 stop7h 45m

Liberia

Fri 9/4

1:25 pm-1:19 am

1 stop9h 54m

$402

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Mon 8/31

6:15 am-12:00 pm

1 stop7h 45m

Liberia

Thu 9/3

1:25 pm-1:19 am

1 stop9h 54m

$402

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Thu 11/5

9:15 am-2:10 pm

1 stop29h 55m

Liberia

Sun 11/8

3:10 pm-4:21 pm

1 stop24h 11m

$415

PhiladelphiaLiberia

PHL - LIR

PHLLIR

Philadelphia

Thu 11/5

9:15 am-2:10 pm

1 stop29h 55m

Liberia

Sun 11/8

3:10 pm-2:44 pm

2 stops22h 34m

$418

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Costa Rica from

How to get the cheapest flight ticket from Philadelphia 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 Philadelphia is in February. Flight prices, which tend to average around $414, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in February, then September is your next best option. Flight prices from Philadelphia to Costa Rica during September average around $418.

What is the cheapest Philadelphia to Costa Rica flight route?

Fly from Philadelphia to Liberia for the best Philadelphia - Costa Rica flight prices

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

You are more likely to see cheaper flights to Costa Rica from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $500 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Philadelphia for as low as $412 on momondo.

What cabin class options are available on Philadelphia to Costa Rica flights?

There are 2 cabin classes available to choose from on Philadelphia to Costa Rica flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to Costa Rica flights?

No. A direct flight is the cheapest option for a flight between Philadelphia to Costa Rica.

Cheap Philadelphia to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Costa Rica

Fastest flight time

5h 09m

Direct flights

Sun

Airports in Costa Rica

40 airports
The fastest flight from Philadelphia to Costa Rica takes 5h 09m
Direct flights go from Philadelphia to Costa Rica on Sunday. There are no airlines offering direct flights.
There are 40 airports in Costa Rica. From Philadelphia there are direct flights to Liberia (LIR).
Search flight deals

Frequently asked questions about flying from Philadelphia to Costa Rica

  • When did momondo last update prices for flights from Philadelphia Airport to Costa Rica?

    Prices for flights from Philadelphia Airport to Costa Rica refresh daily.

  • How many operators does momondo search for flights from Philadelphia Airport to Costa Rica?

  • How old do you have to be to fly from Philadelphia Airport to Costa Rica?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia 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.

  • What is the most popular plane model from Philadelphia to Costa Rica?

Best airlines flying from Philadelphia to Costa Rica

Compare and see reviews for airlines that fly from Philadelphia to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $170Free CancellationRating
7.8
8,498 reviews
Search Delta flights
United AirlinesPriceFrom $218Free CancellationRating
7.4
10,063 reviews
Search United Airlines flights
JetBluePriceFrom $270Free CancellationRating
7.1
3,030 reviews
Search JetBlue flights
FrontierPriceFrom $275Free CancellationRating
5.6
2,742 reviews
Search Frontier flights
American AirlinesPriceFrom $290Free CancellationRating
7.1
11,848 reviews
Search American Airlines flights
SouthwestPriceFrom $395Free CancellationRating
8.0
4,229 reviews
Search Southwest flights
GOLPriceFrom $480Free CancellationRating
7.3
1,265 reviews
Search GOL flights

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Costa Rica?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Costa Rica. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Philadelphia to Costa Rica with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Philadelphia to Costa Rica flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to Costa Rica?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Costa Rica from Philadelphia.

I’m not ready to book a flight from Philadelphia to Costa Rica right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Costa Rica, momondo offers a useful price alert feature which will track prices for flights to Costa Rica from Philadelphia and alert you when they change.

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Mon 8/31
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