How popular is this Seattle to San Francisco flight route?

This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 123 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from Seattle to San Francisco round-trip?

Our cheapest airline available from Seattle to San Francisco is Southwest. Our recent data shows that you can find tickets from as low as $138 on this airline. An additional option worth looking into is Alaska Airlines, starting at $139. Southwest is priced at 40% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Seattle to San Francisco one-way?

$81 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Alaska Airlines and United Airlines, with prices starting from $82 and $83, respectively.

How far ahead should I book a flight from Seattle to San Francisco?

To ensure you get the cheapest price possible for a flight from Seattle to San Francisco, you should look to book at least 57 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $276). Flying from Seattle to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Seattle to San Francisco?

Travelers seeking maximum savings on their Seattle to San Francisco flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to San Francisco

The most flights from SEA to SFO are scheduled on a Thursday (127 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (40 on average).

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the cheapest flights from Seattle to San Francisco?

On average you can expect to pay $717 for a flight from Seattle to San Francisco. The cheapest flight overall is $73 while the most popular route, (Seattle/Tacoma Intl - San Francisco) is currently priced at $68.

What are the most reliable airlines from Seattle to San Francisco?

Consider China Southern (97%), SWISS (92%) or China Eastern (92%) when booking your flight. These represent the most reliable airlines when flying from Seattle to San Francisco.

What are the most popular airlines that fly from Seattle to San Francisco?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Seattle to San Francisco.

What is the cheapest day to fly round-trip from Seattle to San Francisco?

Travelers have found that booking a Thursday departure is the best way to save up to 83% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

Travelers have found it’s best to book a flight 58 days in advance to save up to 211% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 58 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to San Francisco 1-2 weeks in advance for as low as $366, or $530 for flights within the next 24 hours.

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

The best pricing can be found in the month of September. Prices to San Francisco from Seattle average $232. You can even find prices in September for less than $232, as users have found deals to San Francisco from as low as $115. The month of July appears to be one of the more expensive times to travel to San Francisco from Seattle. Flying in the targeted month can save you up to 18%.

What is the cheapest time of day to fly from SEA to SFO?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 41% on flights from Seattle to San Francisco by exploring options for tickets at noon.

What airports do I use to fly from Seattle to San Francisco?

San Francisco is the airport most travelers will use when flying to San Francisco from Seattle/Tacoma Intl. Booking flights from Seattle/Tacoma Intl (SEA) to San Francisco (SFO) should be relatively easy as there are 78 daily flights to San Francisco from 6 different airlines. 2h 12m is how long a flight from Seattle to San Francisco will take if you book a nonstop flight.

Can I find deals for flights from Seattle to San Francisco that include hotel bookings?

Yes. In addition to deals on Seattle to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seattle to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Francisco.

Can I find deals for business class flights from Seattle to San Francisco?

Yes. Cheapflights offers flight deals from Seattle to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$81+ Flights from Seattle to San Francisco

Round-trip from	$138 (Southwest)
One-way from	$81 (American Airlines)
Popular in	July
Cheapest in	September
Average price	$227
Good round-trip deal	$220 or less
Good one-way deal	$173 or less

Alaska's Wi-Fi is a bargain, perfect for getting work done during flights.

Alaska's Premium Class offers extra legroom and free cocktails, ideal for comfort seekers.

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$100	Average$207	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$104	Average$204	FlexibilityNo cancel fee	On-timeN/A
Hawaiian Airlines	Cheapest$113	Average$255	FlexibilityNo cancel fee	On-time85%
United Airlines	Cheapest$120	Average$245	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$130	Average$240	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$226	Average$392	FlexibilityNo cancel fee	On-time71%

$81+ Cheap flights from Seattle to San Francisco (SEA - SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to San Francisco with Cheapflights

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in September or January, booked 88 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Seattle to San Francisco

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Find flight deals from Seattle to San Francisco

Cheapest flights from Seattle to San FranciscoExplore the most affordable flight options available from Seattle to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 7, 2025.

Explore the most affordable flight options available from Seattle to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 7, 2025.

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The best insider tips for Seattle to San Francisco flights

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Best time to book a flight from Seattle to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to San Francisco

How far ahead should I book a flight from Seattle to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to San Francisco. Price data was last updated on August 1, 2025.

What is the cheapest month to book a flight from Seattle to San Francisco?

What is the cheapest time of day to fly from SEA to SFO?

Find hourly flight availability from Seattle to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 7, 2025.

What is the cheapest day to fly from Seattle to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Seattle to San Francisco. Price data was last updated on August 3, 2025.

Weekly flight availability from Seattle to San Francisco

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Seattle to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from Seattle to San Francisco?

How popular is this Seattle to San Francisco flight route?

What are the cheapest airlines flying from Seattle to San Francisco round-trip?

What are the cheapest airlines to fly from Seattle to San Francisco one-way?

What are the most reliable airlines from Seattle to San Francisco?

What are the cheapest flights from Seattle to San Francisco?

Can I find deals for flights from Seattle to San Francisco that include hotel bookings?

How can I find direct flights from Seattle to San Francisco?

Can I find deals for business class flights from Seattle to San Francisco?

What is the cheapest month to book a flight from Seattle to San Francisco?

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Cheapest flights from Seattle to San Francisco
Explore the most affordable flight options available from Seattle to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 7, 2025.