Cheap flights from San Diego to Seattle

Flights overview

Useful information for finding cheap flights from San Diego to Seattle and booking your next trip
Cheapest round-trip flights $148
Frontier 1 stop 6 hr Thu, Feb 26 — Mon, Mar 2
The cheapest round-trip flight from San Diego to Seattle is currently $148
Cheapest one-way flight $83
Southwest Nonstop 3 hr Tue, Apr 28
The cheapest one-way flight from San Diego to Seattle is currently $83
Cheapest nonstop flights $177
Delta Nonstop 4 hr Thu, Feb 26 — Sun, Mar 1
The cheapest nonstop round-trip flight from San Diego to Seattle is currently $177
Last-minute weekend getaway $307
Alaska 1 stop 14 hr Sat, Feb 7 — Sun, Feb 8
The cheapest last-minute weekend getaway from San Diego to Seattle is currently $307
Cheapest business class flights $398
Frontier 1 stop 24 hr Thu, Apr 23 — Mon, Apr 27
The cheapest business class round-trip flight from San Diego to Seattle is currently $398
Fastest flight 3 hr The fastest nonstop flight from San Diego to Seattle takes 3 hr
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from San Diego to Seattle is typically January. The most expensive month to fly is typically July.
January
Cheapest
Typical prices: $115–345
July
Most expensive
Typical prices: $175–300

Popular airlines from San Diego to Seattle

  • Alaska
    Nonstop
    from $177
    Typical price: $185–455
    45 weekly nonstop flights
    SAN - SEA Every day
    414 weekly connecting flights
    SAN - SEA Every day
  • Delta
    Nonstop
    from $177
    Typical price: $185–520
    32 weekly nonstop flights
    SAN - SEA Every day
    98 weekly connecting flights
    SAN - SEA Every day
  • Southwest
    from $181
    Typical price: $190–460
    235 weekly connecting flights
    SAN - SEA Every day
  • United
    from $191
    Typical price: $205–495
    128 weekly connecting flights
    SAN - SEA Every day
  • American
    from $355
    Typical price: $285–550
    22 weekly connecting flights
    SAN - SEA Every day
  • Frontier
    from $180
    Typical price: $170–360
    14 weekly connecting flights
    SAN - SEA Every Wed, Thu, Fri, Sat, Sun

Popular airports near San Diego

  • San Diego International Airport (SAN)
    San Diego United States 10 min 2 mi
  • Tijuana International Airport (TIJ)
    Tijuana Mexico 37 min 16 mi
  • Los Angeles International Airport (LAX)
    Los Angeles United States 2 hr 2 min 111 mi
  • John Wayne Airport (SNA)
    Santa Ana United States 1 hr 21 min 78 mi

Popular airports near Seattle

  • Seattle-Tacoma International Airport (SEA)
    Seattle United States 18 min 11 mi
  • Paine Field (PAE)
    Everett United States 31 min 21 mi
  • King County International Airport - Boeing Field (BFI)
    Seattle United States 11 min 5 mi
  • Portland International Airport (PDX)
    Portland United States 2 hr 44 min 140 mi

Frequently asked questions about flying from San Diego to Seattle

The cheapest flights from San Diego to Seattle are usually in January. Typical ticket prices in January range from $115 to $345.
The cheapest round-trip flight from San Diego to Seattle recently found on Google Flights was with Frontier from $148. The cheapest one-way flight was with Southwest from $83.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Alaska flight from San Diego to Seattle is $177, flying from Mar 5 to Mar 8.
  • The cheapest Delta flight from San Diego to Seattle is $177, flying from Feb 26 to Mar 1.
  • The cheapest Southwest flight from San Diego to Seattle is $181, flying from Apr 23 to Apr 27.
  • The cheapest United flight from San Diego to Seattle is $191, flying from Apr 30 to May 4.
  • The cheapest American flight from San Diego to Seattle is $355, flying from Apr 30 to May 4.
  • The cheapest Frontier flight from San Diego to Seattle is $180, flying from Apr 16 to Apr 20.
The cheapest round-trip flight from San Diego to Seattle starts at $148 from Thu, Feb 26 to Mon, Mar 2. The cheapest one-way flight starts at $83 and departs on Tue, Apr 28.
3 hr is the shortest flight time from San Diego to Seattle.
Most visitors come May–Sep, a period encompassing events such as the Seattle International Film Festival (May); Seafair (Jul), a summer festival including boat races, marathons and parades; and Bumbershoot (Sep), an international music and arts festival. Rainy season is Nov–May, though rain is possible year-round.
It's easy to use Google Flights to find the cheapest days to fly from San Diego to Seattle.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from San Diego to Seattle really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from San Diego to Seattle.

In terms of nonstop flights, Alaska is the most popular. Alaska offers 45 nonstop flights and 414 connecting flights per week. Alaska flies from San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) .

Other popular airlines flying from San Diego to Seattle are:
  • Delta offers 32 nonstop flights and 98 connecting flights per week. Delta flies from San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) .
  • Southwest offers 235 connecting flights per week. Southwest flies from San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) .
  • United offers 128 connecting flights per week. United flies from San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) .
  • American offers 22 connecting flights per week. American flies from San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) .
  • Frontier offers 14 connecting flights per week. Frontier flies from San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA) .
The number of connecting flights refers to distinct flights with at least one stop between San Diego and Seattle.
The cheapest round-trip flight from San Diego to Seattle recently found on Google Flights was with Frontier from $148. The cheapest one-way flight was with Southwest from $83.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Alaska flight from San Diego to Seattle is $177, flying from Mar 5 to Mar 8.
  • The cheapest Delta flight from San Diego to Seattle is $177, flying from Feb 26 to Mar 1.
  • The cheapest Southwest flight from San Diego to Seattle is $181, flying from Apr 23 to Apr 27.
  • The cheapest United flight from San Diego to Seattle is $191, flying from Apr 30 to May 4.
  • The cheapest American flight from San Diego to Seattle is $355, flying from Apr 30 to May 4.
  • The cheapest Frontier flight from San Diego to Seattle is $180, flying from Apr 16 to Apr 20.
Alaska and Delta fly direct from San Diego to Seattle.
  • There are 45 Alaska direct flights from San Diego to Seattle per week. Flights are available every day.
  • There are 32 Delta direct flights from San Diego to Seattle per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between San Diego and Seattle at price $307 is offered by Alaska from Sat, Feb 7 to Sun, Feb 8.
Alaska and Delta fly direct from San Diego to Seattle.
  • There are 45 Alaska direct flights from San Diego to Seattle per week. Flights are available every day.
  • There are 32 Delta direct flights from San Diego to Seattle per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from San Diego to Seattle on a daily basis.
The cheapest direct (nonstop) round-trip flights between San Diego and Seattle start at $177 from Thu, Feb 26 to Sun, Mar 1 with Delta.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from San Diego to Seattle, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between San Diego and Seattle start at $398 from Thu, Apr 23 to Mon, Apr 27 with Frontier.
The cheapest economy class round-trip flights between San Diego and Seattle start at $148 from Thu, Feb 26 to Mon, Mar 2.
To book business class trips from San Diego to Seattle, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between San Diego and Seattle starts at $307 from Sat, Feb 7 to Sun, Feb 8 with Alaska.
The cheapest last-minute deal between San Diego and Seattle at price $307 is offered by Alaska from Sat, Feb 7 to Sun, Feb 8.
To find last-minute flight deals from San Diego to Seattle, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

Search more flights

Popular trips from San Diego

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  3. Las Vegas
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  4. Seattle
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