SJO - SEA

$158 Find Cheap Flights from San José 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 from San José to Seattle departing on 12/20. 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 in flight searches from San José to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San José to Seattle, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$419
Overall average: $525
Avianca
Wed 5/6Mon 5/18
SJO - SEA • 2 stops
Cheapest one-way
$158
Typical prices: $280-$389
Frontier
Sat 12/20
SJO - SEA • 2 stops
Top airlines
Delta
Cheapest • from $423 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
7 weeks
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 6% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 15% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San José to Seattle (SJO-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San José 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 San José to Seattle

Wed, May 6 - Mon, May 18
Avianca Logo
6:10 am - 10:18 pmSJO-SEA
17h 08m2 stops
Avianca Logo
5:00 pm - 8:40 amSEA-SJO
14h 40m2 stops
$419Avianca
Find Deal
Wed, May 6 - Mon, May 18
Avianca Logo
6:10 am - 10:18 pmSJO-SEA
17h 08m2 stops
Avianca Logo
5:00 pm - 8:40 amSEA-SJO
14h 40m2 stops
$421Avianca
Find Deal
Thu, Dec 25 - Thu, Jan 1
Delta Logo
8:30 am - 10:54 pmSJO-SEA
16h 24m1 stop
Delta Logo
6:15 am - 9:55 pmSEA-SJO
13h 40m1 stop
$423Delta
Find Deal
Sat, Dec 6 - Mon, Dec 29
Multiple Airlines Logo
5:10 pm - 10:35 amSJO-SEA
19h 25m1 stop
Multiple Airlines Logo
6:33 pm - 1:42 pmSEA-SJO
41h 09m2 stops
$424Multiple Airlines
Find Deal
Thu, Dec 25 - Thu, Jan 1
United Airlines Logo
6:30 am - 12:59 amSJO-SEA
20h 29m2 stops
United Airlines Logo
1:35 pm - 8:32 amSEA-SJO
16h 57m1 stop
$426United Airlines
Find Deal
Fri, Jan 30 - Tue, Mar 3
Multiple Airlines Logo
4:15 pm - 7:50 pmSJO-SEA
29h 35m1 stop
Multiple Airlines Logo
6:10 am - 11:15 pmSEA-SJO
15h 05m1 stop
$427Multiple Airlines
Find Deal
Mon, Dec 8 - Wed, Jan 28
American Airlines Logo
6:20 am - 3:24 pmSJO-SEA
11h 04m1 stop
American Airlines Logo
11:11 pm - 9:02 pmSEA-SJO
19h 51m1 stop
$428American Airlines
Find Deal
Wed, May 6 - Mon, May 18
Multiple Airlines Logo
4:50 pm - 10:19 amSJO-SEA
18h 29m2 stops
Multiple Airlines Logo
8:25 am - 10:40 pmSEA-SJO
13h 15m1 stop
$429Multiple Airlines
Find Deal
Wed, Apr 22 - Mon, Apr 27
American Airlines Logo
1:45 pm - 11:00 pmSJO-SEA
10h 15m1 stop
American Airlines Logo
10:36 pm - 1:10 pmSEA-SJO
13h 34m1 stop
$430American Airlines
Find Deal
Thu, Mar 19 - Sun, Mar 29
Multiple Airlines Logo
8:05 pm - 10:47 pmSJO-SEA
27h 42m3 stops
Multiple Airlines Logo
7:55 pm - 6:45 pmSEA-SJO
21h 50m2 stops
$432Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for San José to Seattle flights

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

What’s the cheapest day of the week to fly from San José to Seattle?

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

For San José to Seattle, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Seattle back to San José, the best deals are generally found on Tuesday, with Friday being the most expensive.

What is the cheapest month to fly from San José to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San José 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 from San José to Seattle is October, where tickets cost $476 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $641 and $623 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San José 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 on the flight from San José to Seattle, you should book around 7 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 seasonJanuary
Cheapest flight$158
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 11% increase in price.
Flight from San José to Seattle

When to book flights from San José to Seattle

Are your dates flexible? Find out the best times to travel from San José to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San José to Seattle

  • What is the cheapest flight from San José to Seattle?

    In the last 3 days, the lowest price for a flight from San José to Seattle was $158 for a one-way ticket and $423 for a round-trip.

  • Do I need a passport to fly between San José and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San José and on arrival in Seattle.

  • Which airports will I be using when flying from San José to Seattle?

    On your way to Seattle, you’ll fly out from San José Juan Santamaria Intl. You’ll be landing at Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from San José to Seattle?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the San José to Seattle flight route.

  • Which airline alliances offer flights from San José to Seattle?

    oneworld, and Star Alliance are the airline alliances operating flights between San José and Seattle, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San José to Seattle, Alaska Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from San José to Seattle are Alaska Airlines and United Airlines. With an average price for the route of $673 and an overall rating of 8.0, Alaska Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $527 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San José 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 from San José to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from San José is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San José 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 to San José with another airline. Booking your flights between San José and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San José 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 from San José up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San José to Seattle

 
See real verified KAYAK customer reviews for airlines flying from San José to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San José 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 11281 reviews
8.5Crew
7.1Food
8.1Boarding
7.0Entertainment
7.8Comfort
Airline reviews

The crew in first class did an amazing job keeping me comfortable, well fed and with plenty to drink. They work hard and deserve to be recognized

10.0 ExcellentAnonymous, Nov 2025PHL - SEA
Read more Alaska Airlines reviews

The crew in first class did an amazing job keeping me comfortable, well fed and with plenty to drink. They work hard and deserve to be recognized

I would have liked if the flight existed. To be fair the federal government canceled it. But, since it WAS canceled, I would have liked it if Alaska Airlines had moved a finger to assist me rather then abandoning me with my luggage, unable to check it, for 14 hours in Portland. So federal regulations forbid them from storing my bag? Then at least help me find storage or SOMETHING.

Hate this airline. Uncomfortable seats, no screens, no good food.

Have mounted entertainment for long flights instead of making customers use their own equipment

I wish my checked suitcase could have been checked since I arrived an hour before take off .

The staff was so kind and friendly! Boarding was efficient and communication was timely. I would seek out flying with Alaska Airlines in the future.

The cabin crew on this team was particularly kind and excellent.

Check in went pretty well and you didn't lose my bag. After I got a drink from the drink cart they charged me for it, and at the crazy overpriced airport rates. Never had that happen before, is that an american thing? what madness.

In both halves of the trip (going and returning) there were problems. Not exactly Alaska's fault, but still really difficult. Outgoing flight was canceled and rebooked twice due to a total ground stop of all Alaska's flights. This required me to change airports with minimal notice and I almost missed my flight transferring to the other airport (which was roughly an hour and a half away). On the return, the first leg was delayed by an hour, and the second leg was delayed by nearly 3 hours. This was a rough set of flights and the communication about all of these changes was minimal. Crew did their best however, so no fault there. Other thing to remember is there is no food on Alaska flights unless you pre-order. Take that into account when you choose airlines.

My flight was canceled because of an IT outage, and they did not answer the phone for 8 hrs. There was no next flight out, I have missed my wedding because of this.

Great crew, excellent landing, good food. Over all great experience. Thank you!

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

flight was good until we arrived at cmh ten minutes early but then sat on tarmac for twenty minutes because a plane was at our gate, so we had to wait despite the pilot tellling us that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

We loved the steward on the plane. He made the night enjoyable

Everything you need to know for your flight from San José to Seattle

Information on your arrival and departure airports