$251 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 5/19. 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

Thu, Sep 24 - Sat, Oct 3
Multiple Airlines Logo
5:45 am - 5:57 pm
SJO
-
SEA
13h 12m
2 stops
Multiple Airlines Logo
8:00 am - 11:15 pm
SEA
-
SJO
14h 15m
2 stops
$390Multiple Airlines
Wed, Sep 23 - Sat, Oct 3
Multiple Airlines Logo
5:45 am - 5:57 pm
SJO
-
SEA
13h 12m
2 stops
Multiple Airlines Logo
9:50 am - 11:15 pm
SEA
-
SJO
12h 25m
2 stops
$392Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
Multiple Airlines Logo
5:45 am - 10:46 pm
SJO
-
SEA
18h 01m
1 stop
Multiple Airlines Logo
8:00 am - 11:15 pm
SEA
-
SJO
14h 15m
1 stop
$395Multiple Airlines
Thu, Sep 24 - Sat, Oct 3
Multiple Airlines Logo
5:45 am - 8:05 pm
SJO
-
SEA
15h 20m
2 stops
Multiple Airlines Logo
8:00 am - 11:15 pm
SEA
-
SJO
14h 15m
2 stops
$399Multiple Airlines
Wed, Sep 9 - Sat, Sep 19
Multiple Airlines Logo
5:45 am - 5:57 pm
SJO
-
SEA
13h 12m
2 stops
Multiple Airlines Logo
7:00 am - 11:15 pm
SEA
-
SJO
15h 15m
2 stops
$401Multiple Airlines
Thu, May 21 - Sun, May 24
Alaska Airlines Logo
12:53 am - 9:16 pm
SJO
-
SEA
45h 23m
2 stops
Alaska Airlines Logo
7:16 pm - 11:33 pm
SEA
-
SJO
27h 17m
1 stop
$424Alaska Airlines
Mon, Apr 20 - Tue, Apr 28
Alaska Airlines Logo
7:40 am - 9:51 am
LIR
-
SEA
27h 11m
2 stops
Alaska Airlines Logo
10:05 am - 6:20 am
SEA
-
LIR
19h 15m
2 stops
$611Alaska Airlines
Mon, May 11 - Mon, May 18
United Airlines Logo
3:27 pm - 9:40 am
LIR
-
SEA
19h 13m
2 stops
United Airlines Logo
7:08 am - 12:10 pm
SEA
-
LIR
28h 02m
2 stops
$713United Airlines
Thu, Apr 23 - Mon, Apr 27
United Airlines Logo
1:20 pm - 11:12 pm
LIR
-
SEA
10h 52m
1 stop
United Airlines Logo
11:35 pm - 12:10 pm
SEA
-
LIR
11h 35m
1 stop
$722United Airlines
Wed, May 13 - Wed, May 20
American Airlines Logo
2:10 pm - 9:35 am
LIR
-
SEA
20h 25m
1 stop
American Airlines Logo
5:00 pm - 2:37 pm
SEA
-
LIR
20h 37m
1 stop
$723American 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 $390 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $88 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 $459 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 $632 and $608 respectively. For one-way flights, the best month to travel is October with an average price of $459.

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 6% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$251
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 1% 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 $390 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $88 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.

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 12148 reviews
7.8Comfort
7.0Food
7.0Entertainment
8.1Boarding
8.5Crew
Airline reviews

Great. A to B no issues. Everyone did their jobs exceptionally. All great. God bless America.

10.0 ExcellentCory, Mar 2026
MSP - SEA
Read more Alaska Airlines reviews

Great. A to B no issues. Everyone did their jobs exceptionally. All great. God bless America.

The response was very helpful and quick. Overall, it was very professional.

No complimentary snacks or food. Had to buy drinks and food.

The last row was empty and I sat there for two minutes. I was treated like a criminal for doing so. My wife wanted to get past the cart in the aisle and she was treated like dirt by the same black attendent..

My suggestion is that they should provide USB-C charging ports for modern cell phones.

Overall, we had a very good experience with Alaska Airlines on our flight from Honolulu to Seattle. The First Class cabin was comfortable, boarding was smooth, and the crew was friendly and attentive. The meal service was solid and the overall flight felt well organized. One thing that stood out negatively was the drink service. I was in First Class and, while quietly watching movies and not causing any issues, I was cut off after four drinks. I understand safety policies, but the cutoff felt a bit premature given the context.

Everything was excellent. It always is with Alaska Airlines. Thank you. 😊

It was ok! Not fond of sitting in middle seat. Tried to upgrade with my Atmos card but it was a new account and they weren’t able to look up my account details.

The overhead storage was already packed full when I boarded (I fly peasant class), but the attendant played some Tetris and made a spot for my small suitcase. Thanks!

My trip to Seattle from Newark was uncomfortable and there was a maintenance issue that caused a delay which ended up with me being stuck at the Seattle airport on my birthday for almost 12 hrs. The ride itself was very bumpy due to turbulence. I u derstand as my first time flying this could have been normal but all the passengers around me said that this was not what flying is normally like. On my way home I was semi comfortable due to exhaustion and paying $200 in upgrades to have a “better” seat and experience

I liked that it was on time, however, the food was not good.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

They were fast and I like how they used to entertainment system to play video about the safety.

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

In general, flight attendants were not very welcoming. Because of delays in departure and luggage handling, we missed our connecting flight. Offered a later flight on standby but available seats were then taken by 4 or 5 airline crew so slept at airport and got home next day. I am a frequent traveler, and this experience was the worst.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

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)

Flight was delayed. No urgency by American Airlines team to assist those with connecting flights. It was basically you are on your own to run through the terminals to try and make your connection. Thanks, Mary

I have never been assaulted they way I was today in Charlotte - shame on American

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

Delayed 24 hours. Should have called it much earlier They provided quality accommodations, food vouchers etc. FINALLY The issues started at 8 AM and they cancelled the flight at 11:30 PM, with no plans for a new flight.

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

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

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Centralia
Fife
Lakewood
Westport
Mukilteo
Lacey
Woodinville
Aberdeen
Poulsbo
Edmonds
Shoreline
DuPont
Monroe
Castle Rock
Edgewood

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle