$259 Find Cheap Flights from Costa Rica to Seattle

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 9/3. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle, as well as popular online travel agencies
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Flight Deals

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
5:45 am - 7:53 pm
SJO
-
SEA
15h 08m
1 stop
Multiple Airlines Logo
8:15 am - 11:15 pm
SEA
-
SJO
14h 00m
1 stop
$415Multiple Airlines
Sat, Oct 3 - Sat, Oct 10
Multiple Airlines Logo
5:45 am - 7:53 pm
SJO
-
SEA
15h 08m
2 stops
Multiple Airlines Logo
6:28 am - 11:15 pm
SEA
-
SJO
15h 47m
2 stops
$421Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
5:45 am - 9:57 pm
SJO
-
SEA
17h 12m
1 stop
Multiple Airlines Logo
8:15 am - 11:15 pm
SEA
-
SJO
14h 00m
1 stop
$423Multiple Airlines
Sat, Oct 10 - Sun, Oct 18
Multiple Airlines Logo
5:45 am - 7:53 pm
SJO
-
SEA
15h 08m
2 stops
Multiple Airlines Logo
10:05 am - 11:15 pm
SEA
-
SJO
12h 10m
2 stops
$424Multiple Airlines
Thu, Oct 22 - Tue, Nov 3
Multiple Airlines Logo
5:45 am - 6:48 pm
SJO
-
SEA
14h 03m
2 stops
Multiple Airlines Logo
8:00 am - 11:15 pm
SEA
-
SJO
13h 15m
2 stops
$430Multiple Airlines
Sat, Jul 25 - Sat, Aug 8
JetBlue Logo
2:40 pm - 9:54 am
LIR
-
SEA
20h 14m
1 stop
JetBlue Logo
10:35 pm - 12:00 pm
SEA
-
LIR
12h 25m
1 stop
$610JetBlue
Thu, Oct 29 - Fri, Nov 13
United Airlines Logo
11:50 am - 9:12 pm
LIR
-
SEA
10h 22m
1 stop
United Airlines Logo
10:40 pm - 12:55 pm
SEA
-
LIR
12h 15m
1 stop
$713United Airlines
Sat, Oct 31 - Mon, Nov 9
Air Canada Logo
1:40 pm - 11:16 pm
LIR
-
SEA
34h 36m
2 stops
Air Canada Logo
5:45 am - 1:55 pm
SEA
-
LIR
30h 10m
2 stops
$716Air Canada
Sat, Oct 31 - Tue, Nov 10
Air Canada Logo
1:40 pm - 11:16 pm
LIR
-
SEA
34h 36m
2 stops
Air Canada Logo
8:10 am - 1:40 pm
SEA
-
LIR
51h 30m
2 stops
$720Air Canada
Thu, Oct 8 - Mon, Oct 12
United Airlines Logo
1:20 pm - 10:40 pm
LIR
-
SEA
10h 20m
1 stop
United Airlines Logo
11:59 pm - 12:10 pm
SEA
-
LIR
11h 11m
1 stop
$722United 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 flight to Seattle?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Seattle was found on the route from San José, at $415 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $116 in the last 3 days.

What is the cheapest day to fly to Seattle?

The average price of all round-trip flights to Seattle clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Seattle is Sunday where round-trip tickets can be as cheap as $871. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $871 on average.

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 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 $448 on average for return flights. On the other hand, the most expensive months are June and January, where the average cost of tickets from Costa Rica is $651 and $620 respectively. For one-way flights, the best month to travel is October with an average price of $448.

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 2 weeks before departure, which saves you about 8% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$259
Most popular time to fly and prices are also 2% lower on average.
Flight from San José to Seattle

FAQs - booking Seattle flights

  • What is the cheapest flight to Seattle?

    In the last 3 days, the cheapest flight deal to Seattle was found on the route from San José, at $415 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $116 in the last 3 days.

  • 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 12,216 direct flights from within Costa Rica to Seattle. The most common day for departures is Sunday, with 16% 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 12352 reviews
7.0Food
7.0Entertainment
8.5Crew
8.1Boarding
7.8Comfort
Airline reviews

Made our reservations 6 months ago. When we arrived at the airport we were informed they no longer have assigned seating. We were placed in the last row next to the restrooms. Our seats did not recline. I do not like the fact you are assigning seats. I don’t feel it’s fair. People who make last minute reservations sit in the middle seats. It’s did Southwest now have assigned seating and you assign seats. Even Southwest was more fair than Alaska.

2.0 MediocreAnonymous, May 2026
STL - SEA
Read more Alaska Airlines reviews

Made our reservations 6 months ago. When we arrived at the airport we were informed they no longer have assigned seating. We were placed in the last row next to the restrooms. Our seats did not recline. I do not like the fact you are assigning seats. I don’t feel it’s fair. People who make last minute reservations sit in the middle seats. It’s did Southwest now have assigned seating and you assign seats. Even Southwest was more fair than Alaska.

We tried for days to use online Alaska Airline app we needed to know what Gate to depart from . When we got there we were given a paper boarding ticket with the wrong gate on it . We almost missed this flight . It caused great stress and caused a health side effect. The previous flights April 24 started hour late mechanical issues . We were not allowed to depart plane in time to get correct gate and missed our flight .

Check in went smooth, flight was on time and our checked bag was delivered in a timely fashion.

I had to cancel my trip due to medical reasons. I have been unable to cancel online through either Kayak or Alaska Airlines.. I am trying to get my insured trip reimbursed by XCover. They are requiring a notice of cancellation or not using to get my refund. Please help me get that information. I have been unable to get this information from either Kayak or Alaska Airlines.

We got window seats and there was no window to look out at very disappointed in paying for a no window seat

We took off on time and rose into the wild blue yonder safely, and landed at our destination safely eighteen minutes early. In between we enjoyed a smooth flight and wonderful service by a great crew. Flight attendants and pilots made sure the trip was a memorable and happy experience. Can’t beat that!

Affirmed my disability by allowing me to board when most accessible. Very parable, helpful and friendly staff. Smooth flight overall! I always fly Alaska when possible! Thank you!

Our flight from Raleigh to Seattle delayed by hour plus. We missed connection as we couldn’t get to next gate in time Then we waited till 2:30 plane and then sat on tarmac loaded for half hour then our luggage couldn’t be found finally found where it was 2 employees sent us in wrong direction

Made up time on a late flight and made the connection

They were really helpful with every question and my kids had never been on a plane and the staff made them feel comfortable

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Seats were not super comfortable and food was not good at all. If I had a chance I would definitely fly a different airline. Of course they are better than any budget airline, but not by much.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

The small flights with Valet Luggage has a poor service

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

Everything was fine except the end of the flight. We spent more than an hour circling around Miami due to weather conditions. That was not good.

They lost my bag. ... And I asked them 3 times to 3 different people if my checked bag will maKe it all the way - they all confirmed and at the end it was left at the connection... Bravo

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Delayed due to weather in Dallas (arriving flight arrived late), then boarded the plane only to deboard immediately afterwards, tire needed to be replaced. Flight supposed to depart at 6:15pm but departed at 9:35pm.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Centralia
Fife
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Mukilteo
Westport
Lacey
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Aberdeen
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Monroe
Castle Rock
Edgewood

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle