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Find cheap flights from Seattle to Costa Rica from $97

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Costa Rica departing on 5/4. 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.
1 adult
0 bags
Sun 5/19
Sun 5/26

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Best Costa Rica Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

San José
San José2 stops$413
Liberia
Liberia1 stop$420

Good to know

Low season

September

High season

February

Cheapest flight

$97
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Seattle to San José

FAQs - booking Costa Rica flights

  • What type of travel documents will I need to fly from Seattle to Costa Rica?

    Citizens of the United States traveling from Seattle to Costa Rica need a valid passport for the trip, and the passport must be valid for the entire length of their stay. There is no need to have a visa when you travel as a tourist so long as you do not plan on staying for more than 90 days, but you do need to provide a return plane ticket to customs authorities.

  • When renting a car in Costa Rica, what child car seat laws do I need to know about?

    Car seats are mandatory for any children 12 years old and under or for those that are 57 inches or shorter. Any child up to one year of age must be in a rear-facing car seat in the middle seat in the rear of the vehicle. Children from one year to four years old need to be in a front-facing car seat in the middle seat. Children from four to six years old must be in a booster seat with a back, and children from six years old to 12 years old need to be in a booster seat without a back.

  • Are there any good public transportation options to get me from San José Juan Santamaria International Airport to downtown San Jose?

    A quick and convenient way to get from the airport to the downtown area is aboard TUASA bus line 200 Alajuela, which makes the trip from the airport to downtown in around 30min.

  • If I am traveling to the seaside community of Golfito in Costa Rica, what is a good airport to use?

    Your best bet is to fly to the San José Juan Santamaria International Airport and then travel aboard the bus service offered by the Grupo Blanco number 699 bus that can make the trip in around 3h.

  • How does KAYAK find such low prices on flights from Seattle 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 Seattle to Costa Rica.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Costa Rica from Seattle 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 Seattle 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 to Costa Rica with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle 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 to Costa Rica from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Costa Rica

  • Morning departure is around 46% more expensive than an evening flight, on average*.
  • One of the most common trips for people traveling from Seattle-Tacoma International Airport (SEA) to Costa Rica is to fly to Liberia Airport (LIR). On this route, you will find one-stop service aboard both United Airlines and American Airlines. If you are looking for a cheaper option on this route, consider one of the two-stop options aboard American Airlines.
  • Another popular destination for travelers making the trip from Seattle to Costa Rica is to fly to the San José Juan Santamaria International Airport (SJO). On this route, you will find one-stop service aboard Delta Airlines, United Airlines, American Airlines, and Spirit Airlines.
  • If you're looking for a way to get to the Seattle-Tacoma International Airport without having to drive your car, a good choice would be to take the King County Metro bus line 124, which makes the trip from downtown Seattle to the airport in around 45min.
  • A very quiet and comfortable place to wait for your flight to Costa Rica at the Seattle-Tacoma International Airport is at one of The Club SEA locations at the airport. There are also airline lounges available from United Airlines, Delta Airlines, and Alaska Airlines, as well as a Centurion Lounge at this airport.
  • If you are looking for a great way to get refreshed after a long flight from Seattle to Costa Rica, the San José Juan Santamaria International Airport offers showers in the terminal building for use by travelers after long trips.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Seattle to Costa Rica

 
Need help choosing which airline to fly with from Seattle 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
Alaska AirlinesOverall score based on 9109 reviews
7.3entertainment
8.2boarding
7.3food
7.9comfort
8.6crew
Airline reviews

It was not a great flight. There was a software update delay which had us on the ground for almost 2 hours. I was unable to make my shuttle to my final destination.

4.0 OkayBryn, Apr 2024SEA - PHX
Read more about Alaska Airlines reviews

It was not a great flight. There was a software update delay which had us on the ground for almost 2 hours. I was unable to make my shuttle to my final destination.

Good. Quiet. Comfortable. The protests nearly kept me from catching my flight. They waited for me! I made it!

Red eye flight, so not expecting any extras, but the boarding and trip was smooth. Thx Alaska.

Received little assistance with air sick child. Crew’s main concern was if anything got on the seat belt!

I had to gate check my luggage and it was a pleasant experience as I never done that procedure before. Everything went smoothly.

Flight was excellent! Comfortable seats. Flew out of IND. very friendly crew!

It was fine… Just overbooked every seat was taken and very bumpy nothing they could do about that. Overall I like to fly Alaska airlines

Seat width is getting ridiculous. I don’t like having to twist myself into a ball to avoid my neighbor. It has gotten so bad over the last few years.

Flight had mechanical delay, but otherwise it was good considering it was a full plane. Did not have food or entertainment. Staff were great.

It was a great flight. The flight crew was very helpful and professional.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Boarding in Seattle is always a mess. Sat in Deltas new domestic first class cabin. Everything was great except I found the seat cushion to be fairly uncomfortable. I’m a bigger guy so take that into mind (6’2” / 300 lbs.). Crew was meh.

Some entertainment and food/snack service would have been nice

All the pessengers should be wait in a line útil the creo and piloto are arrived.

Planes seat could be bigger very uncomfortable for tall humans.

1 hour waiting for suitcases to come out traveling in business class and food in business class is a sandwich? Avoid Aeromexico .

No space reserved for anyone who didn’t have underseat in front of them. Made it inconvenient to get the backs secured. No inflight entertainment in the 190. Bring your own! Food was excellent and we were surprised to get a full breakfast.

Cons: "left Houston more than 2 hours later, arrive in Mexico over 2 am"
Cons: "El problema es que nunca pude cambiar mi vuelo y con ustedes fue imposible comunicarse para que me auxiliaran. Muy mal por ustedes no por la línea."
Pros: "The crew was amazing , the site is ok"
Cons: "I love Aeroméxico , thanks for de service and the food."
Pros: "Plenty a space between seats. Ver confortable seats and small entertainment screens!"
Cons: "Better selection of movie?"
Cons: "Way too much people... We're in a pandemic and the plane was Full. Unacceptable."

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

the flight from Tampa departed with a delay. The food on board was poor, usually on international airlines alcoholic beverages are offered free of charge , but here it was for a fee, the cutlery was wooden, there were no hot drinks (tea, coffee). Unfortunately, I didn't take pictures of the portions of food, but it wouldn't have been enough for a child either.And in the future, I will try not to use the services of this airline

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

Comfort of seats, ease of boarding. Food selection could be better

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

No problems with flight. Even though I had a short layover in DFW, I was still able to easily make my connection.

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Plane took off without me, my stepdad and a dozen other passengers. It went from an hour delay to boarding in 15 montures without notifying anyone. Names were not called overhead. Now I’m missing a day of work and stuck in Charolette overnight paying for a hotel and Ubers out of pocket

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

Book cheap flights from Seattle to Costa Rica

Recent round-trip flight deals

4/30Tue
2 stopsSpirit Airlines
21h 58mSEA-SJO
5/6Mon
2 stopsSpirit Airlines
32h 54mSJO-SEA
$413
4/29Mon
3 stopsSpirit Airlines
35h 19mSEA-SJO
5/13Mon
2 stopsSpirit Airlines
24h 09mSJO-SEA
$417
5/7Tue
1 stopAmerican Airlines
12h 52mSEA-LIR
5/14Tue
1 stopAmerican Airlines
11h 41mLIR-SEA
$420
5/6Mon
1 stopAmerican Airlines
10h 55mSEA-LIR
5/14Tue
1 stopAmerican Airlines
11h 41mLIR-SEA
$422
7/18Thu
1 stopDelta
17h 38mSEA-LIR
9/18Wed
1 stopDelta
11h 43mLIR-SEA
$451
5/16Thu
1 stopAlaska Airlines
12h 30mSEA-LIR
5/23Thu
1 stopAlaska Airlines
14h 59mLIR-SEA
$457
5/15Wed
1 stopAlaska Airlines
9h 21mSEA-LIR
5/21Tue
1 stopAlaska Airlines
13h 50mLIR-SEA
$471
5/17Fri
1 stopDelta
31h 30mSEA-SJO
5/26Sun
1 stopDelta
13h 53mSJO-SEA
$474
5/18Sat
2 stopsUnited Airlines
18h 13mSEA-SJO
5/30Thu
2 stopsUnited Airlines
18h 20mSJO-SEA
$531
5/15Wed
2 stopsUnited Airlines
27h 47mSEA-SJO
6/1Sat
1 stopUnited Airlines
17h 11mSJO-SEA
$536

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Recent one-way flight deals

5/4Sat
2 stopsSpirit Airlines
16h 29mSEA-SJO
$97
5/18Sat
2 stopsSpirit Airlines
16h 57mSEA-SJO
$134
4/30Tue
2 stops
34h 01mSEA-SJO
$149
5/20Mon
1 stopAmerican Airlines
12h 47mSEA-SJO
$213
5/17Fri
1 stopAmerican Airlines
15h 54mSEA-SJO
$214
5/19Sun
1 stopAlaska Airlines
12h 00mSEA-SJO
$230
5/21Tue
2 stopsUnited Airlines
31h 41mSEA-LIR
$291
4/22Mon
1 stopAlaska Airlines
11h 56mSEA-SJO
$309
7/6Sat
1 stopDelta
18h 33mSEA-SJO
$394
5/28Tue
3 stopsUnited Airlines
12h 41mSEA-SJO
$2,304

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Last minute flights from Seattle to Costa Rica

Last minute flight, train and bus deals

4/22Mon
multi-stopSpirit Airlines
21h 58mSEA-SJO
4/24Wed
multi-stopSpirit Airlines
24h 09mSJO-SEA
$474
4/21Sun
multi-stopDelta
19h 33mSEA-LIR
4/26Fri
multi-stopDelta
20h 27mLIR-SEA
$479
4/22Mon
multi-stopAmerican Airlines
13h 00mSEA-LIR
4/26Fri
multi-stopAmerican Airlines
10h 49mLIR-SEA
$488
4/22Mon
multi-stopAmerican Airlines
14h 16mSEA-LIR
4/26Fri
multi-stopAmerican Airlines
10h 49mLIR-SEA
$491
4/22Mon
multi-stopAlaska Airlines
24h 03mSEA-LIR
5/3Fri
multi-stopAlaska Airlines
26h 53mLIR-SEA
$492
4/21Sun
multi-stopAlaska Airlines
20h 11mSEA-LIR
4/26Fri
multi-stopAlaska Airlines
34h 07mLIR-SEA
$494
4/22Mon
multi-stop
12h 56mSEA-SJO
4/24Wed
multi-stop
24h 09mSJO-SEA
$540
4/21Sun
multi-stopUnited Airlines
15h 27mSEA-LIR
4/26Fri
multi-stopUnited Airlines
21h 40mLIR-SEA
$554
4/23Tue
multi-stopUnited Airlines
11h 11mSEA-LIR
4/29Mon
multi-stopUnited Airlines
27h 41mLIR-SEA
$567
4/22Mon
multi-stop
31h 30mSEA-SJO
4/23Tue
multi-stop
20h 11mSJO-SEA
$597

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Seattle - Costa Rica Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Costa Rica - Seattle

Cabin classes: