$79 Cheap Delta flights San Diego (SAN) to Seattle (SEA)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines return flights from $157 from SAN to SEA. Affordable one-way tickets from $79 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for round-trip or one-way flights to Seattle in January or February. You could find cheaper fares with Delta Air Lines during these quieter months.

Search for affordable Delta Air Lines flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) one to three months prior to your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and itinerary, the ideal day to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Delta Air Lines has direct flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA), with 31 departures each week. Simply use the “Nonstop” and “Airline” filters while searching on Expedia to find all direct Delta Air Lines flights to SEA.

It takes approximately 3h 14m to travel nonstop from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) with Delta Air Lines.

If flexibility is what you’re after, Wednesday offers the most choice for Delta Air Lines flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA). You can select from 5 different departures.

Jetting off from SAN at 7:20AM UTC-8, the earliest Delta Air Lines flight to SEA lands at 10:35AM UTC-8. Traveling earlier in the day means you’ll be less likely to encounter delays.* Prefer a later start? The last Delta Air Lines flight from SAN to SEA departs at 6:55PM UTC-8 and touches down at 10:10PM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Seattle - Tacoma Intl. Airport (SEA) is the main hub for Delta Air Lines flights from San Diego Intl. Airport (SAN) to Seattle. But the airline also travels to Snohomish County - Paine Field Airport (PAE). Make sure you tick the “All Airports” option for your destination to see all available choices for your trip to Seattle.

Traveling from SAN to SEA with Delta Air Lines means enjoying a host of benefits, including a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to use on select future travel purchases. That’s on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA) route, Delta Air Lines typically uses Boeing 737-800 and Airbus A220-300 planes. Don’t forget that last-minute changes are possible for operational demands, so your flight may be on a different aircraft.

Depending on the ticket type you purchased, a fee generally applies if you cancel or change your booking more than 24 hours after confirmation. To find flexible plane tickets, select our “Changes included” or “No cancel fee” filter when looking for flights. To learn more about modifying or canceling your reservation, head to “Trips,” select your flight and click on “Manage Booking.”