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Cheap flights from Washington to Costa Rica from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Costa Rica departing on 2/18. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 8:39 pm
PDX
-
SJO
11h 39m1 stop
United Airlines Logo
9:40 am - 6:56 pm
SJO
-
PDX
11h 16m1 stop
$276United Airlines
Mon, Jan 19 - Wed, Jan 28
American Airlines Logo
6:00 am - 10:30 pm
PDX
-
SJO
14h 30m1 stop
American Airlines Logo
6:00 am - 8:27 pm
SJO
-
PDX
16h 27m2 stops
$280American Airlines
Fri, Jan 23 - Wed, Feb 4
American Airlines Logo
6:00 am - 10:30 pm
PDX
-
SJO
14h 30m1 stop
American Airlines Logo
7:09 am - 8:27 pm
SJO
-
PDX
15h 18m1 stop
$281American Airlines
Thu, Jan 22 - Wed, Feb 4
Multiple Airlines Logo
7:00 am - 10:40 pm
PDX
-
SJO
14h 40m1 stop
Multiple Airlines Logo
8:50 am - 8:30 pm
SJO
-
PDX
12h 40m1 stop
$306Multiple Airlines
Wed, Apr 8 - Tue, Apr 14
Multiple Airlines Logo
7:00 am - 3:30 pm
PDX
-
SJO
30h 30m1 stop
Multiple Airlines Logo
7:45 am - 8:27 pm
SJO
-
PDX
14h 42m1 stop
$308Multiple Airlines
Thu, Jan 8 - Tue, Jan 13
Alaska Airlines Logo
6:20 am - 6:01 pm
SEA
-
LIR
9h 41m1 stop
Alaska Airlines Logo
11:20 am - 10:46 pm
LIR
-
SEA
13h 26m1 stop
$343Alaska Airlines
Tue, Jan 20 - Wed, Feb 4
Alaska Airlines Logo
7:24 am - 6:01 pm
PDX
-
LIR
8h 37m1 stop
Alaska Airlines Logo
11:20 am - 8:34 pm
LIR
-
PDX
11h 14m1 stop
$345Alaska Airlines
Tue, Jan 20 - Thu, Jan 29
Delta Logo
9:45 pm - 1:50 pm
PDX
-
LIR
14h 05m1 stop
Delta Logo
3:05 pm - 9:25 am
LIR
-
PDX
20h 20m2 stops
$348Delta
Sun, Feb 22 - Thu, Mar 5
Delta Logo
10:30 am - 1:50 pm
PDX
-
LIR
25h 20m2 stops
Delta Logo
3:05 pm - 5:35 pm
LIR
-
PDX
28h 30m2 stops
$359Delta
Sun, Jan 25 - Thu, Jan 29
Southwest Logo
5:15 am - 7:30 pm
SEA
-
SJO
12h 15m2 stops
Southwest Logo
9:40 am - 10:35 pm
SJO
-
SEA
14h 55m2 stops
$400Southwest
Fri, Jan 23 - Wed, Feb 4

United Airlines flights from State of Washington to Costa Rica

Our best United Airlines deals on State of Washington to Costa Rica flight tickets
United Airlines
Jan 19
PDX7:00 amPortland
11h 39m
1 stop
SJO8:39 pmSan José Juan Santamaria Intl
Jan 28
SJO9:40 amSan José Juan Santamaria Intl
11h 16m
1 stop
PDX6:56 pmPortland
$276
Find similar
United Airlines
May 5
GEG12:35 pmSpokane
22h 46m
2 stops
SJO12:21 pmSan José Juan Santamaria Intl
May 12
SJO8:45 amSan José Juan Santamaria Intl
13h 50m
1 stop
GEG9:35 pmSpokane
$298
Find similar
United Airlines
Jan 21
PSC12:45 pmPasco Tri Cities
22h 11m
2 stops
SJO12:56 pmSan José Juan Santamaria Intl
Jan 31
SJO6:40 amSan José Juan Santamaria Intl
16h 33m
2 stops
PSC9:13 pmPasco Tri Cities
$302
Find similar

Delta flights from State of Washington to Costa Rica

Our best Delta deals on State of Washington to Costa Rica flight tickets
Delta
Jan 20
PDX5:25 pmPortland
26h 50m
2 stops
SJO10:15 pmSan José Juan Santamaria Intl
Jan 27
SJO7:00 amSan José Juan Santamaria Intl
28h 25m
2 stops
PDX9:25 amPortland
$330
Find similar
Delta
Feb 22
PDX9:45 pmPortland
14h 05m
1 stop
LIR1:50 pmLiberia
Mar 5
LIR3:05 pmLiberia
20h 20m
2 stops
PDX9:25 amPortland
$348
Find similar
Delta
Feb 1
PDX9:45 pmPortland
14h 05m
1 stop
LIR1:50 pmLiberia
Feb 6
LIR3:05 pmLiberia
22h 55m
2 stops
PDX12:00 pmPortland
$349
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 December 11, 2025.
Use the filters below to find and compare flights from Washington to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSan José

PDX - SJO

PDXSJO

Portland

Mon 1/19

7:00 am-8:39 pm

1 stop11h 39m

San José Juan Santamaria Intl

Wed 1/28

9:40 am-6:56 pm

1 stop11h 16m

$276

PortlandSan José

PDX - SJO

PDXSJO

Portland

Fri 1/23

6:00 am-10:30 pm

1 stop14h 30m

San José Juan Santamaria Intl

Wed 2/4

6:00 am-8:27 pm

2 stops16h 27m

$280

PortlandSan José

PDX - SJO

PDXSJO

Portland

Thu 1/22

6:00 am-10:30 pm

1 stop14h 30m

San José Juan Santamaria Intl

Wed 2/4

7:09 am-8:27 pm

1 stop15h 18m

$281

PortlandSan José

PDX - SJO

PDXSJO

Portland

Wed 4/8

7:00 am-10:40 pm

1 stop14h 40m

San José Juan Santamaria Intl

Tue 4/14

8:50 am-8:30 pm

1 stop12h 40m

$306

PortlandSan José

PDX - SJO

PDXSJO

Portland

Thu 1/8

7:00 am-3:30 pm

1 stop30h 30m

San José Juan Santamaria Intl

Tue 1/13

7:45 am-8:27 pm

1 stop14h 42m

$308

SeattleLiberia

SEA - LIR

SEALIR

Seattle/Tacoma Intl

Tue 1/20

6:20 am-6:01 pm

1 stop9h 41m

Liberia

Wed 2/4

11:20 am-10:46 pm

1 stop13h 26m

$343

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 1/20

7:24 am-6:01 pm

1 stop8h 37m

Liberia

Thu 1/29

11:20 am-8:34 pm

1 stop11h 14m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 2/22

9:45 pm-1:50 pm

1 stop14h 05m

Liberia

Thu 3/5

3:05 pm-9:25 am

2 stops20h 20m

$348

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 1/25

10:30 am-1:50 pm

2 stops25h 20m

Liberia

Thu 1/29

3:05 pm-5:35 pm

2 stops28h 30m

$359

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 1/23

5:15 am-7:30 pm

2 stops12h 15m

San José Juan Santamaria Intl

Wed 2/4

9:40 am-10:35 pm

2 stops14h 55m

$400

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 State of Washington 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 State of Washington is in October. Flight prices, which tend to average around $495, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in October, then September is your next best option. Flight prices from State of Washington to Costa Rica during September average around $499.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Tuesday is the cheapest day to fly to Costa Rica from State of Washington. The lowest ticket price found for a Tuesday departure recently was $576. 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 $782. 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?

At noon is the cheapest time of day to fly from State of Washington to Costa Rica when you can find flight prices for as low as $658. Flying to Costa Rica at noon 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 $693. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington to Costa Rica flight route?

Fly from Seattle/Tacoma Intl to Liberia for the best Washington - Costa Rica flight prices

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

You are more likely to see cheaper flights to Costa Rica from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $626 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from State of Washington for as low as $535 on momondo.

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

There are 3 cabin classes available to choose from on Washington 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 State of Washington to Costa Rica flights?

You could potentially save up to 29% on your flight if you consider stops on a State of Washington to Costa Rica flight.

Cheap State of Washington to Costa Rica flight deals and tips

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

Best Price Found

$782

Fastest flight time

7h 02m

Direct flights

Sun

Airports in Costa Rica

40 airports
The best flight deal from State of Washington to Costa Rica found on momondo in the last 72 hours is $782
The fastest flight from State of Washington to Costa Rica takes 7h 02m
Direct flights go from State of Washington to Costa Rica on Sunday. There are no airlines offering direct flights.
There are 40 airports in Costa Rica. From State of Washington there are direct flights to Liberia (LIR).
Search flight deals

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

    Prices for flights from Washington to Costa Rica are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The necessary travel and health documents for your Costa Rica trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from State of Washington to Costa Rica?

Best airlines flying from State of Washington to Costa Rica

Compare and see reviews for airlines that fly from State of Washington to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
AviancaPriceFrom $152Free CancellationRating
6.6
2,480 reviews
Search Avianca flights
DeltaPriceFrom $280Free CancellationRating
7.9
8,005 reviews
Search Delta flights
American AirlinesPriceFrom $287Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $311Free CancellationRating
8.0
11,431 reviews
Search Alaska Airlines flights
Copa AirlinesPriceFrom $416Free CancellationRating
7.6
1,558 reviews
Search Copa Airlines flights
SouthwestPriceFrom $530Free CancellationRating
7.9
4,253 reviews
Search Southwest flights
AeromexicoPriceFrom $809Free CancellationRating
7.4
1,643 reviews
Search Aeromexico flights

Why use momondo?

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

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

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

Yes. All flights to Costa Rica from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Washington and Costa Rica by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Washington to Costa Rica flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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