Cheap Flights from San Diego International to Seattle from RM444

Compare San Diego International to Seattle flight deals

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Flight deals from San Diego International to Seattle

Looking for a cheap last-minute deal or the best return flight from San Diego International to Seattle? Find the lowest prices on one-way and return tickets right here.

Seattle.RM444 per passenger.Departing Wed, 30 Apr, returning Sat, 3 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 30 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 3 May, arriving in San Diego International.Price includes taxes and charges.From RM444, select.

Seattle.RM444 per passenger.Departing Fri, 4 Apr, returning Sat, 19 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 4 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 19 Apr, arriving in San Diego International.Price includes taxes and charges.From RM444, select.

Seattle.RM463 per passenger.Departing Sat, 3 May, returning Tue, 6 May.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from San Diego International on Sat, 3 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Tue, 6 May, arriving in San Diego International.Price includes taxes and charges.From RM463, select.

Seattle.RM524 per passenger.Departing Wed, 19 Mar, returning Wed, 26 Mar.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from San Diego International on Wed, 19 Mar, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Wed, 26 Mar, arriving in San Diego International.Price includes taxes and charges.From RM524, select.

Seattle.RM531 per passenger.Departing Mon, 31 Mar, returning Mon, 7 Apr.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from San Diego International on Mon, 31 Mar, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Mon, 7 Apr, arriving in San Diego International.Price includes taxes and charges.From RM531, select.

Seattle.RM657 per passenger.Departing Thu, 29 May, returning Mon, 9 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Thu, 29 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Mon, 9 Jun, arriving in San Diego International.Price includes taxes and charges.From RM657, select.

Seattle.RM746 per passenger.Departing Mon, 2 Jun, returning Fri, 6 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 2 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 6 Jun, arriving in San Diego International.Price includes taxes and charges.From RM746, select.

Seattle.RM783 per passenger.Departing Wed, 2 Apr, returning Tue, 8 Apr.Return flight with Delta.Outbound direct flight with Delta departs from San Diego International on Wed, 2 Apr, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 8 Apr, arriving in San Diego International.Price includes taxes and charges.From RM783, select.

Find the cheapest month to fly from San Diego International to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego International to Seattle flights are currently cheapest in April.

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Direct flights from San Diego International to Seattle

Alternative San Diego International to Seattle routes

Looking for the cheapest, fastest or easiest route from San Diego International to Seattle? You could fly into the following airports instead.

San Diego to Seattle: Flight information

The things to know before you go.

Cheapest flight found	RM444
Cheapest month to fly	April
Average flight time	3 hrs, 6 mins
Most popular airline	Hawaiian Airlines
Average flights per week	410

Finding cheap flights from San Diego International to Seattle: Frequently asked questions

How many airports are there in Seattle?

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.

How much are return flights from San Diego International to Seattle?

The best price we found for a return flight from San Diego International to Seattle is RM444. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from San Diego International to Seattle?

3 hours and 6 minutes is the average flight time from San Diego International to Seattle.

Which airlines fly direct from San Diego International to Seattle?

Hawaiian Airlines, Alaska Airlines and WestJet fly direct from San Diego International to Seattle.

How many flights are there a week from San Diego International to Seattle?

As of February 2025, there are 820 flights per week flying from San Diego International to Seattle.

When is the cheapest time to fly from San Diego International to Seattle?

The cheapest month to fly from San Diego International to Seattle is usually February 2025.

Which is the cheapest airport to fly into in Seattle?

If you're flying from San Diego International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from RM444.

Which upcoming date is cheapest to fly from San Diego International Airport to Seattle on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Diego International Airport to Seattle on Friday, 4 April 2025.

Can I get a direct flight from San Diego International Airport to Seattle?

Yes – the average flight time is 3 hours and 6 minutes.

How can I get the best flight deal from San Diego International Airport to Seattle?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Seattle?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Seattle?

In February, the average temperature is usually around 4°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Which is the cheapest airline to fly from San Diego International Airport to Seattle with?

Currently, Frontier Airlines and Delta offer the cheapest flight tickets to Seattle.

Travelling from San Diego International Airport (SAN) to Seattle: what you need to know

Around 2 hours 49 minutes is how long you can expect to be travelling on a direct flight from San Diego International Airport to Seattle.
Seattle's timezone is UTC-7, which is the same as San Diego (the location of San Diego International Airport).
With 105 flights a week between the two airports, San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) is the busiest route. Alaska Airlines operates the earliest flight at 06:15. If you're eager to get more out of your day before flying, the last departure from SAN to SEA is with Alaska Airlines at 21:00.
To ensure you get on your flight from SAN to Seattle, leave enough time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the standard rule.
Peak months like July or high seasons such as spring break and Thanksgiving will mean bigger waits at check-in and security. Travelling then? Play it safe and head to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is a smart idea.
You can catch a nonstop flight from San Diego International Airport to Seattle that lands at Seattle-Tacoma International Airport (SEA).
Check out the offers from Alaska Airlines. This carrier has direct flights from San Diego International Airport to Seattle.
You won't need a visa or passport to travel within United States. You will need a valid form of identification though, such as a driver's licence or ID card. Add them to your packing list once you've booked cheap tickets from San Diego International Airport to Seattle.
Travelling from central San Diego to SAN takes about 20 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 5 kilometres in 9 minutes or so, depending on traffic conditions.
Have an early flight from San Diego International Airport to Seattle? Avoid the hassle of rushing to the terminal (and catch some extra z's) by picking one of these hotels close to SAN:

How to find the cheapest flights from San Diego International Airport (SAN) to Seattle

RM224 is the lowest price we've seen for a one-way ticket from San Diego International Airport to Seattle. For a return flight on this route, the best price is RM444. Depending on when and how early you book, these fares could change.
Book 9 months before your departure date. After crunching the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from SAN to Seattle.
Schedule your trip for May. That's the cheapest month for tickets from San Diego International Airport to Seattle. If you have flexibility with your dates, use the 'Whole month' tool to see the lowest price across every month.
Sign into your online account or use the app to set up a Price Alert. You'll be notified straight away if there's a better deal on this route. It's easy to do, and it'll save you from searching for cheap tickets from SAN to Seattle every day.
Use the filters to tailor your flights from San Diego International Airport to Seattle. Enter your ideal departure and arrival times, airlines and number of stops. Alternatively, sort your results by 'Cheapest' to get the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

Seattle-Tacoma International Airport (SEA) is around 23 kilometres from the centre of Seattle. With your own car rental or if you're catching a cab, the drive is around 18 minutes.
It takes roughly 54 minutes if you're travelling by public transport.
If you have a late flight from San Diego International Airport to Seattle, nothing beats the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near SEA:

Lake Union Sea Plane Base Airport (LKE)

Lake Union Sea Plane Base Airport (LKE) is around 3 kilometres from central Seattle. Following your flight from San Diego International Airport to Seattle, it'll take you around 11 minutes to get to the heart of the city in a cab or ride-share.
You can also travel by public transport, which typically takes 23 minutes.
Hang the 'Do not disturb' sign on your door and relax at a hotel near LKE. Here are a few options where you can kick back after your flight from SAN to Seattle:

Best time to go to Seattle

July is the busiest month to hop on a flight from San Diego International Airport to Seattle while May is the quietest. To work out the best time to visit Seattle, consider the pace you prefer to travel at.
Book your flight from San Diego International Airport to Seattle for August to visit the city during its warmest month. You can expect temperatures to range from 12ºC to 28ºC.
Search for cheap flights from SAN to Seattle in February if you like cooler conditions. Temperatures are at their lowest around then, ranging between -1ºC and 11ºC on average.

More about Seattle

Start your Seattle trip off on the right foot by choosing the ideal place to stay. After booking your flight from San Diego International Airport to Seattle, browse our selection of accommodation options including:
Every great holiday has to include a little sightseeing. Gas Works - Lake View Point, Queen Anne Bowl Playfield and LMN Architects are attractions you won't want to skip in Seattle.

Complete your Seattle trip with a car rental

Finding you a cheap flight from San Diego International Airport to Seattle isn't our only party trick. Check out our car rentals in Seattle and see the sights your way. We search for deals from trusted car rental providers and put them all in one place. Instantly compare offers and then book with no fees.