Cheap flights from California to Seattle from $40
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Seattle departing on 8/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from California to Seattle
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Hawaiian Airlines flights from California to Seattle
Our best Hawaiian Airlines deals on California to Seattle flight tickets
American Airlines flights from California to Seattle
Our best American Airlines deals on California to Seattle flight tickets
See travel insights to Seattle from
How to get the cheapest flight ticket from California to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
In general, January is the cheapest month to fly from California to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $148. If you don’t want to visit Seattle in January, then you should wait until September to fly from California, when ticket prices are also cheap, with an average price of $174.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from California is on a Saturday. momondo users have found tickets for Saturday departures for as low as $252. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from California because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $342.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from California at noon is the least expensive time of day to depart. momondo users have found prices as low as $250 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $309. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest California to Seattle/Tacoma Intl flight route?
Fly from Ontario to Seattle/Tacoma Intl for the best California - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from California when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $205 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from California for as low as $172 on momondo.
What cabin class options are available on California to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on California to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from California to Seattle/Tacoma Intl?
Alaska Airlines, Spirit Airlines, and Frontier are the most popular carriers operating from California to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Seattle from California according to our data. Alaska Airlines is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 9 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from California to Seattle on average per day?
506 flights are operational daily from California to Seattle as of June 2025. The most popular departure time for this route is 11:00AM, with 46% of flights per day taking off at noon.
How many flights depart from California to Seattle on average per week?
As of June 2025, there are 3,542 flights per week flying from California to Seattle. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.
Cheap California to Seattle flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from California to Seattle
When did momondo last update prices for flights from California to Seattle/Tacoma Intl Airport?
Prices for flights from California to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from California to Seattle/Tacoma Intl Airport?
As of June 2025, there are 9 operators available to choose from for flights from California to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from California to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from California to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from California to Seattle?
Based on momondo bookings for flights between California and Seattle, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 20.60% of the total bookings. Other popular models include Boeing 737-900 Passenger/BBJ3 (winglets) with 15.47%, Boeing 737 with 9.46%, and Boeing 737 MAX 9 with 9.36%.
Best airlines flying from California to Seattle
Compare and see reviews for airlines that fly from California to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $41 | Free Cancellation | Rating 5.9 3,296 reviews | |||
| PriceFrom $61 | Free Cancellation | Rating 6.3 8,060 reviews | |||
| PriceFrom $81 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $88 | Free Cancellation | Rating 7.8 2,501 reviews | |||
| PriceFrom $113 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $118 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $135 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $138 | Free Cancellation | Rating 8.0 4,278 reviews |
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from California to Seattle?
It is quick and easy to find California to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.
Can I find flights from California to Seattle with flexible booking policies on momondo?
momondo does allow users to show only those flights to Seattle from California which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from California to Seattle?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from California.
I’m not ready to book a flight from California to Seattle right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Seattle from California. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.