Question 1

How popular is this San Diego to Seattle flight route?

Accepted Answer

Flights from San Diego to Seattle/Tacoma Intl have been viewed 4 times in the past calendar month.

Question 2

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

Accepted Answer

According to our current data, Alaska Airlines (C$ 221), Hawaiian Airlines (C$ 230), and Southwest (C$ 237) offers the cheapest pricing from San Diego to Seattle. Alaska Airlines is 31% cheaper than the average price of flights available within the next 90 days to this destination.

Question 3

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

Accepted Answer

To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at C$ 149. Delta flights start at C$ 150 while deals on United Airlines start at C$ 157 one-way.

Question 4

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

Accepted Answer

The price you pay for your flight from San Diego to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 5

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from San Diego to Seattle (average of C$ 262). Flying from San Diego to Seattle in December is currently the most expensive (average of C$ 353). 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 Diego to Seattle?

Accepted Answer

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

Question 7

Weekly flight availability from San Diego to Seattle

Accepted Answer

The most flights from SAN to SEA are scheduled on a Tuesday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm 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 Diego to Seattle?

Accepted Answer

Looking at all options, your cheapest flight can be booked for C$ 136. While the most popular route (San Diego - Seattle/Tacoma Intl) can be booked for C$ 429 on average our data indicates C$ 247 when flying from San Diego to Seattle.

Question 11

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

Accepted Answer

Consider Sun Country Air (100%), Air France (89%) or Delta (87%) when booking your flight. These represent the most reliable airlines when flying from San Diego to Seattle.

Question 12

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

Accepted Answer

Tuesday is generally a great day to depart. Flying on this day could help you save up to 72%.

Question 13

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

Accepted Answer

To save on the cost of your flight from San Diego to Seattle, book at least 49 days before your planned departure. Booking around this time can save you about 212% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 622 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 794.

Question 14

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

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, January can be a great choice for travel to Seattle. Flights to Seattle from San Diego in January are about C$ 322 on average during January, but can be found for as low as C$ 133.

Question 15

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

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from San Diego to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight at noon.

Question 16

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

Accepted Answer

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

Question 17

How can I find direct flights from San Diego 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 Diego to Seattle.

Question 18

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

Accepted Answer

Yes. Cheapflights offers flight deals from San Diego 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 19

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

Accepted Answer

Cheapflights helps you search for flights from San Diego to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 20

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

Accepted Answer

Cheapflights helps you find that perfect flight to Seattle from San Diego by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 21

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

Accepted Answer

Certainly. Search results for flights to Seattle from San Diego shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 22

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

Accepted Answer

Of course! You can now track prices for flights from San Diego 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	C$ 221
One-way from	C$ 149
Popular in	July
Cheapest in	January
Average price	C$ 402
Good one-way deal	C$ 149 or less

Cheap flights from San Diego to Seattle from C$ 149

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from San Diego to Seattle/Tacoma Intl are usually found in January or October, booked 48 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from San Diego to Seattle

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Find flight deals from San Diego to Seattle

Cheapest flights from San Diego to SeattleExplore the most affordable flight options available from San Diego to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 Juli 2025.

Explore the most affordable flight options available from San Diego to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 Juli 2025.

Cheapflights Fare Finder

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

Best time to book a flight from San Diego to Seattle

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Seattle. Price data was last updated on 25 July 2025.

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

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

Find hourly flight availability from San Diego 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 29 Juli 2025.

Weekly flight availability from San Diego to Seattle

Explore weekly flight availability from San Diego 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 29 Juli 2025.

Reviews of airlines servicing Seattle

See what other customers who have flown with Alaska Airlines,Southwest, andDelta from San Diego to Seattle have to say. You can also see how each airline compares 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 Diego to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How popular is this San Diego to Seattle flight route?

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

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

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

What are the cheapest flights from San Diego to Seattle?

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

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

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

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

Travelling to a place near Seattle?

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

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

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

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

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Cheapest flights from San Diego to Seattle
Explore the most affordable flight options available from San Diego to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 Juli 2025.