Cheap flights from San Diego to Seattle from $43
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 Diego to Seattle departing on 8/31. 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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Spirit Airlines flights from San Diego to Seattle
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Frontier flights from San Diego to Seattle
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How to get the cheapest flight ticket from San Diego 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, January is the cheapest month to fly from San Diego to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $161. If you don’t want to visit Seattle in January, then you should wait until October to fly from San Diego, when ticket prices are also cheap, with an average price of $176.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from San Diego is on a Thursday. momondo users have found tickets for Thursday departures for as low as $329. 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 Diego because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $571.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from San Diego in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $325 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $414. 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 Diego to Seattle/Tacoma Intl flight route?
Fly from San Diego to Seattle/Tacoma Intl for the best San Diego - 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 Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $234 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Diego for as low as $199 on momondo.
What cabin class options are available on San Diego to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on San Diego 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.
Can stopping save me money on San Diego to Seattle flights?
No. A direct flight is the cheapest option for a flight between San Diego to Seattle.
How have San Diego to Seattle flight prices changed over time?
As of July 2025, prices for San Diego to Seattle flights are approximately 15% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from San Diego to Seattle/Tacoma Intl?
Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from San Diego to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Seattle from San Diego according to our data. Alaska Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 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 Diego to Seattle on average per day?
As of July 2025, 51 flights take off from San Diego and land in Seattle each day. The most common flight departure time for this route is 1:00PM, with 42% of daily flights taking off in the afternoon.
How many flights depart from San Diego to Seattle on average per week?
358 flights are operational weekly from San Diego to Seattle as of July 2025. The most popular departure day for this route is Wed, with 20% of flights per week taking off on this day.
When to book flights from San Diego to Seattle
Cheap San Diego to Seattle (SAN to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Diego to Seattle
How far is San Diego to Seattle/Tacoma Intl by plane?
The straight-line distance from San Diego to Seattle/Tacoma Intl is 1063.7 mi. Typically, this will take 2h 53m by plane in normal conditions.
When did momondo last update prices for flights from San Diego Airport to Seattle/Tacoma Intl Airport?
Prices for flights from San Diego Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from San Diego Airport to Seattle/Tacoma Intl Airport?
There are 8 operators available for flights from San Diego Airport to Seattle/Tacoma Intl Airport as of July 2025.
How old do you have to be to fly from San Diego 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 Diego Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from San Diego to Seattle?
momondo data reveals that the most frequently booked plane model on the route from San Diego to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets), representing 25.10% of all bookings. The subsequent popular models are Boeing 737-900 Passenger/BBJ3 (winglets) at 18.72%, Boeing 737 MAX 9 at 13.20%, and Boeing 737 at 11.88%.
What is the most popular airline from San Diego to Seattle?
Based on momondo bookings for flights between San Diego and Seattle, the leading airline is Delta, making up 45% of the total bookings. Other popular airlines include Alaska Airlines with 44%, Hawaiian Airlines with 5%, and Frontier with 3%.
Best airlines flying from San Diego to Seattle
Compare and see reviews for airlines that fly from San Diego to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $74 | Free Cancellation | Rating 6.3 8,094 reviews | |||
| PriceFrom $99 | Free Cancellation | Rating 5.9 3,284 reviews | |||
| PriceFrom $113 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $117 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $135 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $160 | Free Cancellation | Rating 7.8 2,545 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 8.0 4,270 reviews | |||
| PriceFrom $228 | Free Cancellation | Rating 7.4 8,861 reviews |
Delta Flights From San Diego to Seattle
Across 14 Delta flights from San Diego to Seattle this week, the average price was $233, with the best Delta deals starting from $117 round-trip. 7,983 users have rated Delta on momondo, with an average score of 8.0/10.
Alaska Airlines Flights From San Diego to Seattle
Another popular option for San Diego to Seattle flights is Alaska Airlines (8.0/10, 10,000 ratings). Alaska Airlines flies from San Diego to Seattle around 34 times per week, with deals starting from $135 round-trip and rising to an average price of around $272.
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 Diego to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from San Diego.
Can I find flights from San Diego to Seattle with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for San Diego to Seattle flights to just show those with flexible booking policies.
How can momondo help me find flights from San Diego to Seattle?
Once you have performed a search for San Diego to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Diego to Seattle right now. Can momondo alert me if prices change?
Price alerts on flights to Seattle from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.