Cheap Flights from San Francisco (SFO) to Seattle (LKE)

Popular airlines from San Francisco Intl. Airport (SFO) to Seattle, WA (LKE-Lake Union Seaplane Base)

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Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $264
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $264
Select flight to Snohomish County - Paine Field PAE. Average driving time to city center is 29 minutes. Flights from $267
PAE
Snohomish County - Paine Field
Average driving time to city center29 min
Flights from $267

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE) cost?
Secure a cheap one-way flight or cheap return flight from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE)?
Traveling in is a great way to save, as it's the cheapest month for flights between SFO and LKE. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from SFO to LKE. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE)?
You'll need to book a flight with a layover if you're traveling from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from SFO to LKE?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE)?
To avoid possible delays on the San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE) route, aim to travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from San Francisco Intl. Airport (SFO)?
If you're leaving on a direct flight from San Francisco Intl. Airport (SFO) to Seattle, you'll land at either Seattle - Tacoma Intl. Airport (SEA) or Snohomish County - Paine Field Airport (PAE).
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE) last-minute?
Last-minute fares from SFO to LKE are usually more expensive. To lock in the lowest rates, start looking for flights as soon as possible. That being said, if you're flexible with your travel plans, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book a SFO to LKE flight and hotel package?
You'll typically save money by booking a SFO to LKE flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've selected your preferred accommodations and flights, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Lake Union Seaplane Base Airport (LKE)?
Usually, it's possible to reschedule or cancel your SFO to LKE flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Lake Union Seaplane Base
Distance
691 mi

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San Francisco to Seattle Flights

The cheapest times to fly from San Francisco to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Seattle are during the month of . You can find some of the cheapest flights from San Francisco to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Seattle

Sunday is one of the best days to book for cheap flights from San Francisco to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Seattle Flights

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*Available to One Key members.