Cheap Flight Deals from San Diego to Seattle
Find cheap flights from San Diego to Seattle for today
Flight Info | San Diego to Seattle
The distance between San Diego and Seattle is approximately 1,692.33 km. It takes around 3 hours 4 minutes on average to fly from San Diego to Seattle. Based on Trip.com's data, travel demand peaks in July. The cheapest month to book is December.
Alaska Airlines
SAN-SEA
3h 5m · Nonstop
Sat, Sep 12 - Tue, Sep 15
San Diego to Seattle | Find Cheap Flight Deals
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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One way
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Round-trip
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Cheapest nonstop
SAN 6:15 AM3h 5mNonstopSEA 9:20 AMSan Diego - Seattle | Sat, Sep 12 | Alaska Airlines
SEA 8:40 PM2h 55mNonstopSAN 11:35 PMSeattle - San Diego | Tue, Sep 15 | Alaska Airlines$113 $15125% off25% off$151 $113 -
SAN 3:50 PM3h 2mNonstopSEA 6:52 PMSan Diego - Seattle | Sat, Sep 5 | Alaska Airlines
SEA 8:41 AM3h 4mNonstopSAN 11:45 AMSeattle - San Diego | Sat, Sep 12 | Alaska Airlines$128 $15115% off15% off$151 $128
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SAN 7:15 AM3h 10mNonstopSEA 10:25 AMSan Diego - Seattle | Wed, Sep 16 | Alaska Airlines
SEA 11:32 AM3h 10mNonstopSAN 2:42 PMSeattle - San Diego | Wed, Sep 23 | Alaska Airlines$129 $15115% off15% off$151 $129
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SAN 7:03 AM3h 2mNonstopSEA 10:05 AMSan Diego - Seattle | Thu, Aug 27 | Delta Air Lines
SEA 7:15 AM2h 56mNonstopSAN 10:11 AMSeattle - San Diego | Sun, Aug 30 | Delta Air Lines$12915% off$151 $129 -
SAN 6:15 AM3h 5mNonstopSEA 9:20 AMSan Diego - Seattle | Sat, Sep 19 | Alaska Airlines
SEA 6:21 PM2h 55mNonstopSAN 9:16 PMSeattle - San Diego | Sat, Sep 26 | Alaska Airlines$13014% off$151 $130
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SAN 4:50 PM3h 2mNonstopSEA 7:52 PMSan Diego - Seattle | Fri, Sep 11 | Alaska Airlines
SEA 8:49 PM2h 55mNonstopSAN 11:44 PMSeattle - San Diego | Fri, Sep 18 | Alaska Airlines$13113% off$151 $131
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal Airline
SEA 3:00 PM6hNonstopSAN 4:00 PMSeattle - San Diego | Fri, Aug 14 | Normal AirlineFind more flightsFind more flights
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch -
SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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SAN 1:00 PM17h 25m1 stopSEA 2:00 PMSan Diego - Seattle | Wed, Aug 12 | Normal AirlineSearchSearch
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Popular airlines from San Diego to Seattle
Delta Air Lines
Alaska Airlines
United Airlines
Trip.com price insights on flights from San Diego to Seattle
Which month has the cheapest one-way flights from San Diego to Seattle?
Based on Trip.com’s data, the cheapest month for flights from San Diego to Seattle is September, with an average price of $158; while the month with the highest flight price is usually March, with an average price of up to $273.
What is the cheapest month for round-trip flights from San Diego to Seattle?
According to historical data from Trip.com, the lowest prices for flights from San Diego to Seattle are found during April, with an average price of $176. Conversely, the highest prices are found during November, with an average price of up to $460.
When is the cheapest day to fly from San Diego to Seattle during Labor Day?
Labor Day is scheduled for Sep 7. The cheapest flights from San Diego to Seattle are available on Sep 5, with fares starting at $73.
Frequently Asked Questions
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Which airlines offer direct flights from San Diego to Seattle?
At the moment, you can catch a nonstop flight from San Diego to Seattle with the following airlines, including: Alaska Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days. -
How long does it take to fly from San Diego (SAN) to Seattle (SEA) and what is the distance?
It takes around 3 hours 4 minutes to fly from San Diego (SAN) to Seattle (SEA). -
When is the best time to book flights from San Diego to Seattle?
By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Diego to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals. -
How many flights are there per week from San Diego to Seattle?
Based on Trip.com data in the past 4 weeks, there is 97 flight per week flying from San Diego to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS1473 (06:35) -
How can I find the best deals on flights from San Diego to Seattle?
To find best deals on flights from San Diego to Seattle, you can use various tools on Trip.com:
· Set up price alerts to easily monitor ticket prices without having to check every day.
· Check Trip.com flight deals and promo codes frequently.
· Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
· Get exclusive promo codes for Trip.com app users. -
When are flight tickets from San Diego (SAN) to Seattle (SEA) the cheapest?
The cheapest months to fly from San Diego to Seattle is December, when demand for travel is lower. -
Which upcoming date is cheapest to fly from San Diego to Seattle on?
After crunching the numbers on our August flight calendar, it's currently cheapest to fly from San Diego to Seattle on August 27, 2026 with Delta Air Lines, with prices starting at $129. -
Which airports can I fly to for Seattle from San Diego?
You can land at any one of the following hubs in Seattle, with San Diego International Airport to Seattle-Tacoma International Airport (SAN-SEA) is by far the most common option on this route: Seattle-Tacoma International Airport (SEA) King County (Boeing Field) International Airport (BFI) Kenmore Air Harbor Seaplane Base (LKE). -
Is there any time difference between San Diego and Seattle?
The time difference between Seattle and San Diego is 0m. -
How do I change or cancel my ticket from San Diego to Seattle?
Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages. -
What is the average cost of a one-way flight from San Diego to Seattle?
Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Diego to Seattle is $167. Fares vary by travel date, airline and availability. -
What is the average cost of a round-trip flight from San Diego to Seattle?
Based on Trip.com data for travel in the next 30 days, the average round-trip fare from San Diego to Seattle is $278. The final price depends on the outbound and return dates, airline and fare conditions. -
How do I book flights from San Diego to Seattle on Trip.com?
Enter San Diego and Seattle, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation. -
Are there budget airlines on the San Diego to Seattle route?
Frontier Airlinesare the most popular budget airlines flying from San Diego to Seattle. Check baggage, seat and payment fees before comparing the final price.
Traveling from San Diego to Seattle: What You Need to Know
After taking off from San Diego International Airport (SAN), which is conveniently close to downtown San Diego, you will travel about 1,700 kilometers (about two hours and forty-five minutes) before landing at Seattle-Tacoma International Airport (SEA). Arriving 1.5 to 2 hours early is advised for domestic flights to check in and get security. Time zone differences are not an issue because both cities are on Pacific Time (UTC-8).
There are multiple daily nonstop flights on this West Coast route. A wide range of amenities, flexibility, and point benefits are provided by Alaska Airlines, Delta Air Lines, and Hawaiian Airlines. This route is frequent, convenient, and simple to schedule, whether you're traveling for business or a Pacific holiday.
San Diego International Airport (SAN)
📍Harbor Island Dr, San Diego, CA 92101, USA
Situated only 3 miles (5 km) northwest of San Diego's downtown, San Diego International Airport (SAN) serves as a focus city for both Alaska Airlines and Southwest Airlines. Featuring two runways and a single consolidated terminal divided into West (domestic) and East (international) concourses, it handles more than 25 million passengers a year. Delta Air Lines and Alaska Airlines offer nonstop flights to Seattle–Tacoma International Airport (SEA), with an average duration of roughly two hours and forty-five minutes.
Transportation from downtown to SAN :
The Coaster commuter train to Santa Fe Depot + free airport shuttle: $6 one-way, approximately 20-minute train + 10-minute shuttle;
MTS Route 992 "Airport Flyer" bus: $2.50 one-way, approximately 30 minutes to the terminal
• Lyft/Uber ridesharing: $20–30, approximately 10–15 minutes
• Taxi: about $30 flat rate, about 10 to 15 minutes
Seattle-Tacoma International Airport (SEA)
📍17801 International Blvd, SeaTac, WA 98158, United States
More than 52.6 million passengers were handled by Southeast Asian airports in 2024, setting a new high of 52,640,716 passengers, up around 3% from 2023. With an average flight duration of roughly two hours and forty-five minutes, nonstop flights to Seattle-Tacoma International Airport (SEA) are provided by Delta Air Lines, and Alaska Airlines.
Transportation from downtown to SEA:
SeaTac/Airport station is 38 minutes away by Link Light Rail, which costs $3 one-way with an ORCA or Transit GO ticket.
Trains operate every 8 to 10 minutes, and there is a free train-to-plane shuttle that connects you to the terminal.
Best time to fly from San Diego to Seattle
when prices might be 20–30% less than during peak times, which are January–early March and mid-September–November. The most expensive times to fly are usually weekends, holidays, and the summer (June–August) because of increased demand for travel.
Make your midweek (Tuesday–Thursday) travel arrangements four to six weeks in advance to secure the cheapest prices, and look into low-cost airlines. For your trip, shoulder seasons in the spring (April–May) and fall (late September–October) frequently provide a wonderful mix of affordable rates and pleasant weather.
Add hotel booking and car hire in your trip to Seattle
Bookings for Hotels
Seattle hotels provide accommodations to suit every need, ranging from chic downtown skyscrapers with views of the Space Needle to intimate boutique hotels at the Capitol Hill Arts Center. Craft breweries and tech hubs are conveniently located near chic hotels in Belltown or South Lake Union, while waterfront hotels near Pike Place Market provide fresh seafood and ferry adventures right at your doorstep.
Rent a Car
Buses and light rail connect Seattle, and renting a car allows you to take advantage of the greatest local activities. Take a coffee donut road trip via oddball waterfront communities, cruise Puget Sound to Olympic National Park's rainforests, or go waterfall chasing in the Cascade Mountains. From eco-friendly compact cars to tough off-roaders for mountain travel, the major car rental firms at SEA Airport provide seamless pickup and delivery.
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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.