Question 1

How popular is this San Francisco to Seattle flight route?

Accepted Answer

Flights from San Francisco to Seattle/Tacoma Intl have been viewed 21 times in the past calendar month.

Question 2

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

Accepted Answer

Currently priced at £104, Southwest will fly you from San Francisco to Seattle and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and Delta - these airlines can fly you to your destination from £108 and £109, respectively. Southwest is priced at 41% lower than the current average price of a flight leaving 3 months from now.

Question 3

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

Accepted Answer

The cheapet airlines for a one-way flight from San Francisco to Seattle are Southwest (£55), Delta (£58), and Hawaiian Airlines (£59).

Question 4

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

Accepted Answer

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 64 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.

Question 5

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £622). Flying from San Francisco to Seattle in July is currently the most expensive (average of £946). 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.

Question 6

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

Accepted Answer

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

Question 7

Weekly flight availability from San Francisco to Seattle

Accepted Answer

The most flights from SFO to SEA are scheduled on a Monday (109 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (36 on average).

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 10

What are the cheapest flights from San Francisco to Seattle?

Accepted Answer

Looking at all options, your cheapest flight can be booked for £94. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for £112 on average our data indicates £208 when flying from San Francisco to Seattle.

Question 11

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

Accepted Answer

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Seattle on time: Copa Airlines (100%), Aeromexico (97%), WestJet (90%).

Question 12

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

Accepted Answer

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 129% when planning your travel around this day of the week.

Question 13

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

Accepted Answer

Travelers have found it’s best to book a flight 54 days in advance to save up to 178% 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 54 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 San Francisco to Seattle 1-2 weeks in advance for as low as £279, or £386 for flights within the next 24 hours.

Question 14

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

Accepted Answer

Our data shows that October tends to be the cheapest month to fly to Seattle from San Francisco. Users have commonly found prices around £177 for the month, but tickets can be as low as £84. Due to multiple factors, prepare for potentially higher prices in June.

Question 15

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

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle at midday. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight in the afternoon.

Question 16

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

Accepted Answer

If you book a flight from San Francisco to Seattle, you will be flying from San Francisco to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from San Francisco (SFO) take 2h 04m for a nonstop flight. There are 74 flights from San Francisco to Seattle per day from 1 airline.

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

How does Cheapflights help users find flights from San Francisco to Seattle?

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from San Francisco today with Cheapflights!

Question 21

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Seattle?

Accepted Answer

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Seattle for you. Better yet — we are completely free to use.

Question 22

Can Cheapflights find flights from San Francisco to Seattle with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Seattle, users can toggle the no change fees filter when performing a flight search.

Question 23

Can Cheapflights notify me if prices for flights from San Francisco to Seattle become cheaper?

Accepted Answer

Of course! You can now track prices for flights from San Francisco to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	£104
One-way from	£55
Popular in	June
Cheapest in	October
Average price	£206
Good round-trip deal	£202 or less
Good one-way deal	£106 or less

Cheap flights from San Francisco to Seattle from £55

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 75 days in advance, depart on a Friday or Monday and return on a Tuesday

Cheap flight deals from San Francisco to Seattle

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Find flight deals from San Francisco to Seattle

Cheapest flights from San Francisco to SeattleExplore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.

Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

Best time to book a flight from San Francisco to Seattle

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a return flight from San Francisco to Seattle. Price data was last updated on 27 June 2025.

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

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

Find hourly flight availability from San Francisco to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 July 2025.

Weekly flight availability from San Francisco to Seattle

Explore weekly flight availability from San Francisco to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 8 July 2025.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 8 July 2025.

Check out reviews from past customers who have flown with Alaska Airlines, Southwest, andDelta from San Francisco to Seattle to help guide your decision. You can also see how each airline stacks up 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 San Francisco to Seattle. 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 San Francisco to Seattle?

How popular is this San Francisco to Seattle flight route?

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

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

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

What are the cheapest flights from San Francisco to Seattle?

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

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

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

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

Travelling to a place near San Francisco?

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Alternative routes for San Francisco to Seattle

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Top airline flying from San Francisco to Seattle

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How does Cheapflights help users find flights from San Francisco to Seattle?

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Seattle?

Can Cheapflights find flights from San Francisco to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from San Francisco to Seattle become cheaper?

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Cheapest flights from San Francisco to Seattle
Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.