$314 Find Cheap Flights from Costa Rica to Seattle - Compare and Save

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Cheap Flights from Costa Rica to Seattle

 

Cheap flights to Seattle from top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Wed, Mar 17 - Sun, Mar 21
United Airlines Logo
8:40 am - 12:33 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
16h 53m1 stop San Francisco
United Airlines Logo
7:03 am - 7:39 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
11h 36m1 stop Houston George Bush Intcntl
$559United Airlines
Sun, Nov 8 - Sun, Nov 15
United Airlines Logo
6:40 am - 7:37 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
14h 57m1 stop Los Angeles
United Airlines Logo
11:59 pm - 11:25 amSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
9h 26m1 stop Houston George Bush Intcntl
$559United Airlines
Tue, Dec 22 - Thu, Dec 31
Delta Logo
8:40 am - 6:53 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
12h 13m1 stop Los Angeles
Delta Logo
5:59 pm - 7:15 amSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
11h 16m1 stop Los Angeles
$559Delta
Tue, Dec 22 - Thu, Dec 31
Delta Logo
8:40 am - 8:42 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
14h 02m1 stop Los Angeles
Delta Logo
12:15 pm - 7:15 amSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
17h 00m1 stop Los Angeles
$559Delta
Fri, Jan 29 - Mon, Feb 15
American Airlines Logo
1:20 pm - 12:59 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
13h 39m1 stop Miami
American Airlines Logo
10:15 pm - 12:27 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
12h 12m1 stop Charlotte Douglas
$567American Airlines
Wed, Nov 18 - Tue, Dec 1
American Airlines Logo
2:07 pm - 10:12 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
22h 05m1 stop Charlotte Douglas
American Airlines Logo
5:49 pm - 1:43 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
17h 54m1 stop Dallas/Fort Worth
$568American Airlines
Thu, Dec 17 - Wed, Dec 23
Southwest Logo
2:10 pm - 1:15 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
13h 05m2 stops Houston Hobby Las Vegas Harry Reid Intl
Southwest Logo
9:50 pm - 12:20 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
12h 30m2 stops Las Vegas Harry Reid Intl Houston Hobby
$914Southwest
Thu, Dec 17 - Wed, Dec 23
Southwest Logo
2:10 pm - 1:15 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
13h 05m2 stops Houston Hobby Las Vegas Harry Reid Intl
Southwest Logo
2:30 pm - 1:15 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
20h 45m2 stops Denver Intl Orlando
$924Southwest
Sun, Nov 22 - Mon, Nov 23
Alaska Airlines Logo
1:26 am - 11:03 amSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
11h 37m1 stop Los Angeles
Alaska Airlines Logo
7:07 pm - 11:51 pmSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
26h 44m1 stop Los Angeles
$969Alaska Airlines
Wed, Dec 16 - Sat, Dec 26
Alaska Airlines Logo
1:54 am - 7:03 pmSJO  San José Juan Santamaria Intl-SEA Seattle/Tacoma Intl
19h 09m1 stop Los Angeles
Alaska Airlines Logo
9:14 pm - 12:44 amSEA  Seattle/Tacoma Intl-SJO San José Juan Santamaria Intl
25h 30m1 stop Los Angeles
$997Alaska Airlines

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?

The cheapest month for flights to Seattle is February, where tickets cost $546 on average for return flights. On the other hand, the most expensive months are August and June, where the average cost of tickets from Costa Rica is $700 and $696 respectively. For one-way flights, the best month to travel is November with an average price of $301.

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

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

$314
Best time to beat the crowds with an average 1% drop 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

  • 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 12,496 direct flights from within Costa Rica to Seattle. The most common day for departures is Sunday, with 17% 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

 
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 13066 reviews
7.8Comfort
7.0Entertainment
8.1Boarding
8.5Crew
7.0Food
Airline reviews

The boarding was fairly good, the flight attendants were efficient & patient, we had a decent snack for food, the arrival was smooth. Very happy with my overall experience!

10.0 ExcellentTed, Oct 2026
Read more Alaska Airlines reviews

The boarding was fairly good, the flight attendants were efficient & patient, we had a decent snack for food, the arrival was smooth. Very happy with my overall experience!

Needed a bit of help to gate. Everyone was pleasant and helpful. The crew on the flight was amazing.

The only thing I had issue with was the screaming 2-3 year old behind me who decided at the beginning and end of our trip we needed to listen to her literally scream at the top of her lungs and throw a huge tantrum- it had nothing to do with ear pressure. Nothing the air line can do about that. SMH. Crew and all employees were fantastic

Alaska was fine. My issue is with the booking via Kayak. The seating charts I picked seats from were wrong, I chose window seats (E) but those were actually middle seats on the plane.

Start with the boarding experience. Our flight from Seattle to Dulles Airport in Virginia was delayed because of mechanical issues with the aircraft. Nothing we could do about that. But the board in the passenger gate waiting area gave a boarding time with the delay, and we watched that. The waiting area was large, and we could not understand anything the gate attendant announced. By the time we four passenger realized the aircraft was boarding before the displayed time, we had missed our board-first opportunity (we were flying full-price First Class) and we were behind all the "Category B" boarders. we had one carry-on bag, and when we finally reached our row, all the overhead bins were full. The flight attendant had to remove some stuff to make room for our bag. He also announced that anyone on the flight could stuff their bag wherever they chose. Second, the food was terrible. I don't believe I have ever had choices that were so poorly conceived, especially in First Class, and I have flown to sixty-five countries. Third, the aircraft itself, a Boeing 737-900, is a pitiful excuse for comfort. Unlike the Airbus on which we flew to-and-from Honolulu to Seattle, the seats did not recline much, and other than a bit more leg room, there was no advantage to having paid the premium to fly Fist Class. I can assure you that we will never willingly fly Alaska Airlines again.

When they needed volunteers to check in bags they let you board with C group.

Stewards were kind. Very generous with the refreshment service. First time flying with Alaska.

It was difficult in SNA to hear the gate announcements due to muffled voice and fire alarm ringing.

They reassigned my aisle seat to someone else without noticing me and gave me a middle seat....

Alaska Airlines is my airline of choice hands down. They deliver consistent quality, especially from the staff. I cringe when I have to fly another carrier.

Wifi was terrible. I couldn't get any work done on the long flight

The flight was fine. Seats were very comfortable. Attendants were very friendly -

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

I would have liked to arrive on time - not 5 hours late!

Board Milian spokesman with pre boarding , not after A group and without my spouse. Total BS, back to Alaska Airlibes I GO. oner 1.2M miles and 900 flights, and every time I fly SWA I regret it, thos will be last time, I only flew SWA but to time requirements fir a Funeral. NEVER AGAIN SWA

Good crew, funny movies, but you need phone ports in the plane and better snacks. :)

Had a long layover in rainy Chicago. The staff were attentive - my husband needed a wheelchair due to a recent fall and unsteady on his feet. They are wonderful for those of us who need a bit of extra care. My only complaint was discovered upon unpacking our suitcases at home. One (we had 3 carry on size and one just a bit larger) had water damage to everything inside. All the clothing (just happened to be the case with the clean clothes) were wet. I know it was raining, but why would items inside be wet? The paperwork packed in this case was damp with ink running. There were momentos from our 10-day European vacation that I was hoping to scrapbook - but alas, they will be scrapped - too damaged to keep. The boxes of French chocolate were damp on the outside. My expensive camera now has a cracked screen and a Gaudi tea-for-one was cracked - even though it was packed in clothing. I know it happened on this flight as I repacked all four suitcases before leaving New York in the morning. My first unhappy experience with luggage at Southwest.

The a/c wasn’t working very well and it was a very hot flight

This was an auto-rebook due to being delayed from an earlier UA connecting flight. The boarding was fine, but they sat me in a middle seat when my original booking was a window seat. Overall, the flight was fine as it still got me to my final destination.

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

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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