Cheap flights from San Francisco to Seattle from $69
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Seattle departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Hawaiian Airlines flights from San Francisco to Seattle
Our best Hawaiian Airlines deals on San Francisco to Seattle flight tickets
Alaska Airlines flights from San Francisco to Seattle
Our best Alaska Airlines deals on San Francisco to Seattle flight tickets
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How to get the cheapest flight ticket from San Francisco 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, October is the cheapest month to fly from San Francisco to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $197. If you don’t want to visit Seattle in October, then you should wait until January to fly from San Francisco, when ticket prices are also cheap, with an average price of $200.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from San Francisco is on a Friday. momondo users have found tickets for Friday departures for as low as $301. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $430.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $285 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $369. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest San Francisco to Seattle/Tacoma Intl flight route?
Fly from San Francisco to Seattle/Tacoma Intl for the best San Francisco - 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 San Francisco when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $240 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Francisco for as low as $150 on momondo.
What cabin class options are available on San Francisco to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on San Francisco 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 San Francisco to Seattle/Tacoma Intl?
Alaska Airlines, Hawaiian Airlines, and Delta are the most popular carriers operating from San Francisco to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Seattle from San Francisco according to our data. Alaska Airlines is the first choice among our users, with 68% 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 San Francisco to Seattle on average per day?
The number of flights available between San Francisco and Seattle is 59 per day as of June 2025. The most frequent departure time is 4:00PM, with 37% of daily flights leaving in the afternoon.
How many flights depart from San Francisco to Seattle on average per week?
As of June 2025, 413 flights take off from San Francisco and land in Seattle each week. The most common flight departure day for this route is Thu, with 27% of weekly flights taking off on this day.
When to book flights from San Francisco to Seattle
Cheap San Francisco to Seattle (SFO to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Seattle
How far is San Francisco to Seattle/Tacoma Intl by plane?
San Francisco and Seattle/Tacoma Intl are 678.2 mi apart from one another. Flights usually cover this in 2h 04m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from San Francisco Airport to Seattle/Tacoma Intl Airport?
Prices for flights from San Francisco Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from San Francisco Airport to Seattle/Tacoma Intl Airport?
As of June 2025, there are 8 operators available to choose from for flights from San Francisco Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from San Francisco Airport 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 San Francisco Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Francisco to Seattle?
momondo data reveals that the most frequently booked plane model on the route from San Francisco to Seattle is Boeing 737-900 Passenger/BBJ3 (winglets), representing 16.35% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 15.19%, Boeing 737-900 at 10.68%, and Boeing 737 MAX 9 at 10.10%.
What is the most popular airline from San Francisco to Seattle?
Based on momondo bookings for flights between San Francisco and Seattle, the leading airline is Alaska Airlines, making up 62% of the total bookings. Other popular airlines include United Airlines with 17%, Delta with 14%, and Hawaiian Airlines with 4%.
Best airlines flying from San Francisco to Seattle
Compare and see reviews for airlines that fly from San Francisco to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $64 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $101 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $115 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $127 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $133 | Free Cancellation | Rating 7.8 2,494 reviews | |||
| PriceFrom $136 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $226 | Free Cancellation | Rating 7.2 10,000 reviews |
Delta Flights From San Francisco to Seattle
Delta is one of the most popular airlines flying from San Francisco to Seattle, operating 23 flights/week on average for this route. A good Delta flight deal for San Francisco to Seattle starts from $115 round-trip, up to an average price of $197. Our users have rated Delta at 8.0/10.
Alaska Airlines Flights From San Francisco to Seattle
Alaska Airlines is also a popular choice for this route. Alaska Airlines flight deals for San Francisco to Seattle start from as low as $136 round-trip, depending on your selected dates, with average Alaska Airlines deals seen on momondo around $260. Alaska Airlines operates 10 flights to Seattle from San Francisco in an average week. Users have rated it 8.0/10 across 10,000 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 San Francisco to Seattle?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Seattle for you.
Can I find flights from San Francisco to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for San Francisco to Seattle flights to just show those with flexible booking policies.
How can momondo help me find flights from San Francisco to Seattle?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Francisco to Seattle.
I’m not ready to book a flight from San Francisco to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from San Francisco and alert you when they change.