$248 Find Cheap Flights from Costa Rica to Seattle - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 10/12. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Costa Rica to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Costa Rica to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Costa Rica to Seattle

Sat, Oct 3 - Sat, Oct 10
Multiple Airlines Logo
7:45 am - 9:59 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
15h 14m1 stop Miami
Multiple Airlines Logo
8:20 am - 11:15 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
13h 55m2 stops Los Angeles Guatemala City La Aurora
$553Multiple Airlines
Tue, Dec 22 - Thu, Dec 31
Multiple Airlines Logo
7:45 am - 10:14 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
16h 29m1 stop Miami
Multiple Airlines Logo
9:20 am - 11:15 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
11h 55m2 stops Los Angeles Guatemala City La Aurora
$553Multiple Airlines
Wed, Jan 20 - Sun, Jan 24
American Airlines Logo
7:16 am - 7:22 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
14h 06m2 stops Dallas/Fort Worth Los Angeles
American Airlines Logo
7:30 am - 8:16 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
10h 46m1 stop Dallas/Fort Worth
$555American Airlines
Sat, Sep 19 - Sun, Sep 27
Multiple Airlines Logo
5:45 am - 9:39 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
16h 54m1 stop Los Angeles
Multiple Airlines Logo
9:27 am - 8:30 amSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
22h 03m1 stop New York John F Kennedy Intl
$555Multiple Airlines
Fri, Sep 4 - Thu, Sep 10
United Airlines Logo
7:55 am - 2:24 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
31h 29m2 stops Houston George Bush Intcntl San Francisco
United Airlines Logo
6:32 am - 7:37 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
12h 05m2 stops Los Angeles Houston George Bush Intcntl
$556United Airlines
Wed, Sep 2 - Sat, Sep 12
United Airlines Logo
1:25 pm - 3:52 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
27h 27m2 stops Houston George Bush Intcntl Denver Intl
United Airlines Logo
5:20 pm - 12:21 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
18h 01m2 stops San Francisco Houston George Bush Intcntl
$556United Airlines
Sun, Sep 20 - Wed, Sep 30
American Airlines Logo
1:00 pm - 12:07 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
12h 07m1 stop Dallas/Fort Worth
American Airlines Logo
6:15 am - 8:07 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
12h 52m2 stops Chicago O'Hare Intl Miami
$564American Airlines
Sun, Sep 20 - Sat, Sep 26
American Airlines Logo
6:00 am - 11:52 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
18h 52m1 stop Miami
American Airlines Logo
5:34 pm - 1:57 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
19h 23m1 stop Dallas/Fort Worth
$566American Airlines
Sat, Sep 26 - Thu, Oct 15
Alaska Airlines Logo
6:20 am - 6:00 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
24h 40m2 stops Los Angeles Portland
Alaska Airlines Logo
8:59 pm - 7:30 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
21h 31m2 stops Portland Los Angeles
$835Alaska Airlines
Sun, Sep 27 - Thu, Oct 15
Alaska Airlines Logo
7:19 am - 10:39 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
16h 20m2 stops Los Angeles Portland
Alaska Airlines Logo
8:59 pm - 7:30 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
21h 31m2 stops Portland Los Angeles
$835Alaska Airlines
Booking Insights

KAYAK's insights & trends for flights to Seattle

Get data-powered insights and trends for flights to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Seattle is October, where tickets cost $494 on average for return flights. On the other hand, the most expensive months are June and August, where the average cost of tickets from Costa Rica is $701 and $663 respectively. For one-way flights, the best month to travel is November with an average price of $260.

How far in advance should I book a flight to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low season

March

Cheapest flight

$248
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from San José to Seattle

FAQs - booking Seattle flights

  • How far is Seattle/Tacoma Intl Airport from central Seattle?

    Central Seattle is 11 miles away from Seattle/Tacoma Intl Airport.

  • What is the name of Seattle’s airport?

    There is only 1 airport in Seattle, called Seattle/Tacoma Intl Airport (SEA). It can also be referred to as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

  • How does KAYAK find such low prices on flights to Seattle?

    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 to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 to Seattle?

    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 Seattle with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Seattle?

    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 Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Seattle are there each week?

    Each week there are around 13,044 direct flights from within Costa Rica to Seattle. The most common day for departures is Sunday, with 18% of flights taking off on this day.

Top tips for finding cheap flights to Seattle

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.

Reviews of the top 3 airlines serving from Costa Rica to Seattle

 
See real verified KAYAK customer reviews for airlines flying to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Costa Rica to Seattle. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Seattle? 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.
7.9
Alaska AirlinesOverall score based on 12800 reviews
7.8Comfort
7.0Food
8.5Crew
7.0Entertainment
8.1Boarding
Airline reviews

late flight, no wifi, no entertainment, no snack. What are you coming to????

4.0 OkayTom, Aug 2026
Read more Alaska Airlines reviews

late flight, no wifi, no entertainment, no snack. What are you coming to????

I lost a bag in the process of getting home and I’m a little stressed about it

The delays were the real problem. The crew and staff were amazing and kept us informed and taken care of but what should have been a 6 hour flight with 1.5 hour wait ended up being a 13 hour day in the airport and in the plane waiting to board then waiting for takeoff. Great flight once we got in the air. Pilots and flight crew were awesome 😎.

It was a 3 plus hour flight. By hour 2 my butt was really sore! Loved having wi-fi for the whole trip!

Flight boarded super late. Missed our departure window. Stuck on the runway for over an hour.

I don't know how an airline can fly you for over 7.5 hours and not offer you anything more than water, coffee or tea without paying! I would never fly Iceland Air again.

Crew were great. Complimentary food was very disappointing. On an early morning flight lasting over 2 hours, a tiny cookie and small drink is inadequate. How about a cinnamon roll or something else a little more substantial.

Boarding was so bad in Seoul! Food was just junk!

It was all in all a good flight. We did not order food did not want to pay the price for the small portions. But the refreshments were great!

The aircraft pumps heat into the cabin in warm weather. High, prolonged discomfort. Not okay to put customers through that. Time to upgrade their fleet.

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

leg space better than expected. two washrooms for one plane isn't enough.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

Everything was fantastic. Modern plane. All the amenities! Although the paid snacks and meals are pure robbery. Like i understand airlines need to make money, but 11$ USD for an overnight oats with some nuts in it and barely any pieces of apple.... Highway robbery

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Our flight was delayed many times throughout the day. The final delay was about 8 hours. I spent time in line to speak to someone at their understaffed desk, and also spent time waiting online and then chatting with a service rep. None of the United employees were any help at all. I desperately wanted to go get rest and possibly re-book my trip but I was denied any compensation or voucher for a hotel. I was repeatedly told it was not United's fault and therefore they had no compensation to offer. Overall, a cold and callous experience.

Flight crew and pilots did great. Flight way delayed due to a part needing replacement. Based on what the pilot indicated- the maintenance crew could’ve resolved this more efficiently than replacing whole part- and taken less time

The most cramped seating I’ve ever experienced, (including budget airlines) with no food available for purchase on a nearly 6 hour flight.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

The main problem was delay. The plane was at the gate early and bags were loaded. However, there was no crew for the flight. They were inbound from LGA and had to land and make their way to our gate. It took more than 40 minutes. Then, once the crew arrived and boarded, one of the crew members had to deplane and then a replacement crew member had to be found. It took another 40 minutes or so to get the final crew member. In all, we took off about 2 hours later than our scheduled departure time. Once in the air, the flight was great. Smooth most of the way. The crew was professional and efficient.

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.

I had trouble finding a boarding pass because I had an hour between Flights and American did not see my flight I believe because I was ticketed through KAYAK. I did not have enough time to go to the desk before boarding so I went to the desk and told them while I was boarding and they had a boarding pass for me within three minutes. Nice. I paid extra to have more legroom and it is definitely worth it for a six hour flight. I would’ve paid for a decent dinner, but they didn’t offer anything but a snack box —not good for six hours.

Terrible flight seats where really uncomfortable I had body aches for 2 days and flight was delays almost two hours

Very smooth for one of the busiest travel days of the year and the crew was great.

Customer service prior to boarding is horrible Communication regarding boarding gates is released at the last minute and the gates are very distant from Customs. Very disappointing

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Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle