$180 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 9/29. 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

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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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

Mon, Sep 8 - Sat, Sep 20
 Logo
4:20 pm - 11:43 amSJO-SEA
20h 23m2 stops
 Logo
4:20 pm - 7:40 amSEA-SJO
14h 20m2 stops
Fri, Sep 12 - Mon, Sep 15
United Airlines Logo
1:20 pm - 10:52 pmLIR-SEA
10h 32m1 stop
United Airlines Logo
5:15 pm - 12:10 pmSEA-LIR
17h 55m1 stop
$342United Airlines
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Mon, Aug 25 - Mon, Sep 1
 Logo
5:10 pm - 11:43 amSJO-SEA
19h 33m1 stop
 Logo
4:20 pm - 7:40 amSEA-SJO
14h 20m2 stops
Thu, Aug 21 - Sat, Aug 30
American Airlines Logo
12:45 pm - 9:19 amLIR-SEA
21h 34m2 stops
American Airlines Logo
2:32 pm - 11:45 amSEA-LIR
20h 13m2 stops
$390American Airlines
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Tue, Sep 16 - Sat, Oct 4
Southwest Logo
8:50 am - 8:55 pmSJO-SEA
13h 05m2 stops
Southwest Logo
4:30 pm - 12:05 pmSEA-SJO
18h 35m2 stops
$412Southwest
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Thu, Aug 21 - Sat, Aug 30
American Airlines Logo
2:00 pm - 12:56 amLIR-SEA
11h 56m1 stop
American Airlines Logo
11:30 pm - 1:26 pmSEA-LIR
12h 56m2 stops
$433American Airlines
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Tue, Sep 9 - Tue, Sep 16
Southwest Logo
8:50 am - 11:35 pmSJO-SEA
15h 45m2 stops
Southwest Logo
7:00 am - 6:55 pmSEA-SJO
10h 55m2 stops
$441Southwest
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Thu, Aug 14 - Mon, Sep 22
Alaska Airlines Logo
10:00 am - 8:45 amLIR-SEA
23h 45m2 stops
Alaska Airlines Logo
10:25 am - 6:20 amSEA-LIR
18h 55m2 stops
$446Alaska Airlines
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Tue, Nov 4 - Fri, Nov 14
Alaska Airlines Logo
1:58 am - 11:06 amSJO-SEA
11h 08m1 stop
Alaska Airlines Logo
11:00 pm - 12:38 amSEA-SJO
47h 38m2 stops
$475Alaska Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
JetBlue Logo
1:00 pm - 10:10 pmSJO-SEA
34h 10m2 stops
JetBlue Logo
11:40 pm - 11:42 amSEA-SJO
35h 02m2 stops
$490JetBlue
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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 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 $513 on average for return flights. On the other hand, the most expensive months are December and June, where the average cost of tickets from Costa Rica is $704 and $627 respectively. For one-way flights, the best month to travel is October with an average price of $513.

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 7 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.


Good to know

Low seasonFebruary
High seasonSeptember
Cheapest flight$180
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 8% 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.

  • What is the cheapest day to fly to Seattle?

    Based on KAYAK data, the cheapest day to fly to Seattle is Wednesday where round-trip tickets can be as cheap as $581. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $676 on average.

  • 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.

  • What is the cheapest time of day to fly to Seattle?

    The cheapest time of day to fly to Seattle is generally in the afternoon, when round-trip flights cost $619 on average. The most expensive time of day to fly to Seattle is generally at night, which is peak travel time and where the average cost of a ticket is $680.

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

    Each week there are around 4,656 direct flights from within Costa Rica to Seattle. The most common day for departures is Monday, with 15% 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 4 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.
8.0
Alaska AirlinesOverall score based on 10000 reviews
8.5Crew
7.1Food
7.1Entertainment
8.1Boarding
7.8Comfort
Airline reviews

We were delayed for hours and this was very difficult, which is why the experience was less pleasant

2.0 MediocreAnonymous, Jul 2025LAS - SEA
Read more Alaska Airlines reviews

We were delayed for hours and this was very difficult, which is why the experience was less pleasant

Flight was delayed 5 hours for no reason. Every single time I fly Alaska, there is a problem. This will be the last time

Flight was on time. Staff was polite and efficient. The snacks were good - only an hour and a half flight. No entertainment but didn't expect that. We brought our own things to do.

Flight was great. Crew was excellent! Would fly with them anytime.

We usually enjoy flying Alaska Airlines. However this time we had multiple negative experiences. We were surprised that they rejected our bags because of a new “50 minute cutoff” but they did not tell us about it beforehand and also did not tell us that it was new. They also lost two of our car seats. The one car seat that was returned to us was half out of its bag and half of it was wet. It was not raining so they must have thrown it in a puddle?! I saw at least 4 other car seats on the carousel in the same condition. We purchased two travel car seats for this trip that were pretty expensive and they lost them. We have yet to receive any word or compensation from our “claim.”

The flight was canceled at the last minute and we got very upset as we had plans in which our schedule that affects a family reunion was in jeopardy.

Paying for first class and then they want $8:00 for wifi.

10 hour delay. Fuel spill. Crew had to drive to Indianapolis to a get a plane. The longest day of travel ever. Poor service.Little to no communication.

Easy flight, crew was polite & observant of all passenger needs as well as safety.

fine. only problem,,,, for some,,,,was that many people started trying to exit from the back of the plane,, . lots of irate people. there should be a flight attendant mid plane..to be sure that doesn't happen. The crew up front had no idea what was happening. One big guy started it..then a bunch of others followed his lead. could have gotten ugly... One man stepped in and questioned those rule breakers.. nothing bad happened,,,but......

Terrible. I was bumped off of my original flight and spent the next six days fighting to get back on it. I lost hours of my vacation trying to get this situation corrected.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Our flight was canceled after several delays. No hotel vouchers offered, minimal help for resolution leave me ultimately to cancel and book on an other airline. Then waited to get bags for more than 3 hours This whole experience has been awful!!!

Food was surprisingly good but the WiFi was not great

this crew didn't care much. bumping carts into seats more times than i care to remember

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

1.It will be better if sandwich is warm. 2.The food is too salty. 3.Breakfast needs some vegetables or fruits.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

More racist flight attandants maybe because i sm an attracticted darkskin latino man but once again bad flight attamdants they ignored me the whole flight even the woman sitting next to me notice how rude they were towards me i really never want to fly united or american airlines they alawsys have the rudesslt and racist flight attandants

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

I didn't like that my paid for seat was changed 2 hours before my flight.

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

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