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Find cheap flights from Seattle to Costa Rica from $169

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 5/28. 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
Thu 6/6
Thu 6/13

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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$279
Liberia
Liberia1 stop$494

Good to know

Low season

September

High season

February

Cheapest flight

$169
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 10% 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 9% 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 9137 reviews
7.3Entertainment
8.6Crew
8.2Boarding
7.3Food
7.9Comfort
Airline reviews

Everything was fine -- on time, clear, clean. I don't want to pay extra for in-flight wi-fi

10.0 ExcellentG, May 2024SEA - BOS
Read more about Alaska Airlines reviews

Everything was fine -- on time, clear, clean. I don't want to pay extra for in-flight wi-fi

The flight was delayed because the pilots had not arrived on their previous flight yet. The flight was 100% full so it was pretty crowded. I miss having the screens on the back of the seats. It would be great if the Alaska planes had the clip so you can put your phone or tablet on the back of the seat in front of you to not strain your neck. Everything else was very smooth.

It was fine since it ensure we went to our destination in time.

I bought the cheapest ticket. No meal, no checked luggage so I didn't expect much and was surprised by how good the flight and service was. Alaska is now my favorite airline.

No entertainment, food was cookies & juice,water, soda or coffee.

My baggage was in another flight, anit was delayed for one hour.

The maintenance delay was seemingly handled very poorly... Little to no information was provided to the passengers sitting on board for an extended period of time. On a brighter note, at least the cabin crew (flight attendants) did the best they could. They seemingly were provided very little information with regards to the delay. Unless absolutely beyond my control, I can’t imagine buying a ticket on Alaska airlines again, based on this and a previous experience my wife recently had, along with complaints overheard from other passengers.

The only issue was in the wheelchair waiting area before we got on the plane. They seemed very disorganized. Everyone we encountered after that was great! We loved Cassandra at check-in. She was awesome. The flight attendants were wonderful too! The lady helping with the waiting wheelchair when we got off the plane was awesome too!

Expect to get miles for us having to miss our first planned flight due to them waiting on passengers that decided to be late to the airport.

Up on arrival, due to twisted ankle, I wasn’t able to walk. Requested for a wheelchair. They immediately asked for it. After 10 minutes wait a young man named Carlos picked me up at the gate, got my baggage and took me to the pick up area. It was a great service. Thanks Alaska Air line

Had a broken tray in business class. Crew just shrugged it off.

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

The plane was so outdated, that it made it uncomfortable. The temperature was hot during the whole flight

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?"

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Again, multiple delays and I eventually just canceled and drove!

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

I was in business class. There was an excellent headset. But half an hour before arrival they collected them! The rest of the trip I had to use a cheap earphone. There must be a better way to protect the headphones.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Book cheap flights from Seattle to Costa Rica

Recent round-trip flight deals

5/18Sat
2 stopsSpirit Airlines
16h 57mSEA-SJO
5/22Wed
2 stopsSpirit Airlines
24h 09mSJO-SEA
$279
5/18Sat
2 stopsSpirit Airlines
16h 57mSEA-SJO
5/29Wed
2 stopsSpirit Airlines
24h 09mSJO-SEA
$286
10/21Mon
1 stopDelta
18h 58mSEA-SJO
10/29Tue
1 stopDelta
11h 43mSJO-SEA
$395
9/18Wed
1 stopDelta
18h 58mSEA-SJO
9/25Wed
1 stopDelta
11h 43mSJO-SEA
$402
9/18Wed
1 stopAmerican Airlines
19h 16mSEA-SJO
9/25Wed
2 stopsAmerican Airlines
14h 38mSJO-SEA
$442
10/22Tue
1 stopUnited Airlines
21h 33mSEA-SJO
10/30Wed
1 stopUnited Airlines
30h 53mSJO-SEA
$456
5/28Tue
1 stopAmerican Airlines
19h 59mSEA-SJO
6/3Mon
1 stopAmerican Airlines
18h 25mSJO-SEA
$471
10/19Sat
2 stopsUnited Airlines
26h 11mSEA-SJO
10/29Tue
1 stopUnited Airlines
26h 17mSJO-SEA
$476
5/16Thu
1 stopAlaska Airlines
22h 15mSEA-LIR
5/21Tue
1 stopAlaska Airlines
13h 50mLIR-SEA
$516
5/16Thu
1 stopAlaska Airlines
22h 15mSEA-LIR
5/21Tue
2 stopsAlaska Airlines
20h 56mLIR-SEA
$521

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Recent one-way flight deals

5/28Tue
2 stopsSpirit Airlines
34h 06mSEA-SJO
$169
5/29Wed
2 stopsSpirit Airlines
13h 29mSEA-SJO
$170
8/31Sat
1 stopAmerican Airlines
18h 30mSEA-SJO
$214
5/29Wed
1 stopAmerican Airlines
12h 47mSEA-SJO
$218
8/13Tue
1 stopAlaska Airlines
12h 00mSEA-SJO
$227
8/25Sun
1 stopUnited Airlines
28h 11mSEA-SJO
$247
8/15Thu
2 stopsUnited Airlines
26h 07mSEA-SJO
$250
6/17Mon
1 stopDelta
17h 10mSEA-LIR
$275
6/16Sun
1 stopDelta
17h 10mSEA-LIR
$336
7/8Mon
1 stopAlaska Airlines
16h 57mSEA-LIR
$350

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Last minute flights from Seattle to Costa Rica

Last minute flight, train and bus deals

5/11Sat
multi-stopSpirit Airlines
16h 57mSEA-SJO
5/21Tue
multi-stopSpirit Airlines
21h 13mSJO-SEA
$427
5/11Sat
multi-stop
16h 57mSEA-SJO
5/21Tue
multi-stop
29h 08mSJO-SEA
$481
5/11Sat
multi-stopSpirit Airlines
16h 57mSEA-SJO
5/20Mon
multi-stopSpirit Airlines
32h 46mSJO-SEA
$510
5/11Sat
multi-stopAmerican Airlines
12h 52mSEA-LIR
5/14Tue
multi-stopAmerican Airlines
10h 54mLIR-SEA
$558
5/10Fri
multi-stopAmerican Airlines
10h 55mSEA-LIR
5/14Tue
multi-stopAmerican Airlines
10h 54mLIR-SEA
$560
5/11Sat
multi-stopUnited Airlines
20h 20mSEA-LIR
5/14Tue
multi-stopUnited Airlines
19h 20mLIR-SEA
$562
5/7Tue
multi-stopUnited Airlines
27h 45mSEA-LIR
5/14Tue
multi-stopUnited Airlines
14h 09mLIR-SEA
$636
5/7Tue
multi-stopAlaska Airlines
11h 56mSEA-SJO
5/9Thu
multi-stopAlaska Airlines
12h 34mSJO-SEA
$780
5/7Tue
multi-stopAlaska Airlines
11h 56mSEA-SJO
5/9Thu
multi-stopAlaska Airlines
14h 38mSJO-SEA
$785
5/11Sat
multi-stopAeromexico
16h 44mSEA-SJO
5/20Mon
multi-stopAeromexico
31h 43mSJO-SEA
$1,619

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Seattle - Costa Rica Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Costa Rica - Seattle

Cabin classes: