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Seattle-Tacoma International Airport to San Diego International Airport flight

Explore the cheapest one-way and round-trip flights from Seattle-Tacoma International Airport to San Diego International Airport over the next 90 days, with one-way fares from KRW 96,900 and round-trip from KRW 118,200. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SEA 9:08 PM
        2h 51m
        Nonstop
        SAN 11:59 PM
        Seattle - San Diego | Fri, Oct 30 | Alaska Airlines
        SAN 8:28 PM
        3h 9m
        Nonstop
        SEA 11:37 PM
        San Diego - Seattle | Thu, Nov 5 | Alaska Airlines
        KRW 118,200 KRW 398,800
        70% off
        70% off
        KRW 398,800 KRW 118,200
      • SEA 7:04 AM
        3h 2m
        Nonstop
        SAN 10:06 AM
        Seattle - San Diego | Sat, Oct 17 | Alaska Airlines
        SAN 6:15 AM
        3h 13m
        Nonstop
        SEA 9:28 AM
        San Diego - Seattle | Sat, Oct 24 | Alaska Airlines
        KRW 119,800 KRW 398,800
        70% off
        70% off
        KRW 398,800 KRW 119,800
      • SEA 8:07 PM
        2h 51m
        Nonstop
        SAN 10:58 PM
        Seattle - San Diego | Thu, Nov 5 | Alaska Airlines
        SAN 8:28 PM
        3h 9m
        Nonstop
        SEA 11:37 PM
        San Diego - Seattle | Mon, Nov 9 | Alaska Airlines
        KRW 120,400 KRW 398,800
        70% off
        70% off
        KRW 398,800 KRW 120,400
      • SEA 7:15 AM
        2h 52m
        Nonstop
        SAN 10:07 AM
        Seattle - San Diego | Thu, Oct 29 | Delta Air Lines
        SAN 6:57 PM
        3h 8m
        Nonstop
        SEA 10:05 PM
        San Diego - Seattle | Thu, Nov 5 | Delta Air Lines
        KRW 122,300
        69% off
        KRW 398,800 KRW 122,300
      • SEA 7:15 AM
        2h 54m
        Nonstop
        SAN 10:09 AM
        Seattle - San Diego | Fri, Oct 16 | Delta Air Lines
        SAN 3:59 PM
        3h 6m
        Nonstop
        SEA 7:05 PM
        San Diego - Seattle | Fri, Oct 23 | Delta Air Lines
        KRW 122,500
        69% off
        KRW 398,800 KRW 122,500
      • SEA 7:15 AM
        2h 54m
        Nonstop
        SAN 10:09 AM
        Seattle - San Diego | Thu, Oct 15 | Delta Air Lines
        SAN 6:57 PM
        3h 8m
        Nonstop
        SEA 10:05 PM
        San Diego - Seattle | Thu, Oct 22 | Delta Air Lines
        KRW 122,500
        69% off
        KRW 398,800 KRW 122,500
      • SEA 9:45 AM
        2h 57m
        Nonstop
        SAN 12:42 PM
        Seattle - San Diego | Mon, Oct 19 | Delta Air Lines
        SAN 7:45 AM
        3h 13m
        Nonstop
        SEA 10:58 AM
        San Diego - Seattle | Sun, Oct 25 | Delta Air Lines
        KRW 122,500
        69% off
        KRW 398,800 KRW 122,500
      • SEA 7:15 AM
        2h 52m
        Nonstop
        SAN 10:07 AM
        Seattle - San Diego | Fri, Nov 20 | Delta Air Lines
        SAN 6:47 PM
        3h 13m
        Nonstop
        SEA 10:00 PM
        San Diego - Seattle | Fri, Nov 27 | Delta Air Lines
        KRW 122,500
        69% off
        KRW 398,800 KRW 122,500
      • SEA 7:04 AM
        3h 2m
        Nonstop
        SAN 10:06 AM
        Seattle - San Diego | Sat, Nov 14 | Alaska Airlines
        SAN 6:16 AM
        3h 12m
        Nonstop
        SEA 9:28 AM
        San Diego - Seattle | Thu, Nov 19 | Alaska Airlines
        KRW 122,500
        69% off
        KRW 398,800 KRW 122,500
      • SEA 7:15 AM
        2h 54m
        Nonstop
        SAN 10:09 AM
        Seattle - San Diego | Sat, Oct 17 | Delta Air Lines
        SAN 3:59 PM
        3h 3m
        Nonstop
        SEA 7:02 PM
        San Diego - Seattle | Sat, Oct 24 | Delta Air Lines
        KRW 126,100
        68% off
        KRW 398,800 KRW 126,100
      • SEA 7:15 AM
        2h 52m
        Nonstop
        SAN 10:07 AM
        Seattle - San Diego | Thu, Nov 12 | Delta Air Lines
        SAN 7:45 AM
        3h 13m
        Nonstop
        SEA 10:58 AM
        San Diego - Seattle | Mon, Nov 16 | Delta Air Lines
        KRW 278,600
        30% off
        KRW 398,800 KRW 278,600
      • SEA 8:07 PM
        2h 51m
        Nonstop
        SAN 10:58 PM
        Seattle - San Diego | Thu, Oct 29 | Alaska Airlines
        SAN 6:15 AM
        3h 13m
        Nonstop
        SEA 9:28 AM
        San Diego - Seattle | Mon, Nov 2 | Alaska Airlines
        KRW 323,000
        19% off
        KRW 398,800 KRW 323,000
      • SEA 1:00 PM
        17h 25m
        1 stop
        SAN 2:00 PM
        Seattle - San Diego | Fri, Sep 25 | Normal Airline
        SAN 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        San Diego - Seattle | Sun, Sep 27 | Normal Airline
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      • Cheapest nonstop
        SEA 2:59 PM
        2h 53m
        Nonstop
        SAN 5:52 PM
        Seattle - San Diego | Sat, Oct 31 | Alaska Airlines
        KRW 100,700 KRW 132,100
        24% off
        24% off
        KRW 132,100 KRW 100,700
      • SEA 7:46 PM
        2h 49m
        Nonstop
        SAN 10:35 PM
        Seattle - San Diego | Tue, Nov 3 | Alaska Airlines
        KRW 101,100 KRW 132,100
        23% off
        23% off
        KRW 132,100 KRW 101,100
      • SEA 8:48 PM
        2h 49m
        Nonstop
        SAN 11:37 PM
        Seattle - San Diego | Sun, Nov 1 | Alaska Airlines
        KRW 101,300 KRW 132,100
        23% off
        23% off
        KRW 132,100 KRW 101,300
      • SEA 7:46 PM
        2h 49m
        Nonstop
        SAN 10:35 PM
        Seattle - San Diego | Thu, Nov 19 | Alaska Airlines
        KRW 103,800
        21% off
        KRW 132,100 KRW 103,800
      • SEA 7:15 AM
        2h 52m
        Nonstop
        SAN 10:07 AM
        Seattle - San Diego | Sun, Nov 1 | Delta Air Lines
        KRW 105,400
        20% off
        KRW 132,100 KRW 105,400
      • SEA 7:59 PM
        2h 52m
        Nonstop
        SAN 10:51 PM
        Seattle - San Diego | Tue, Nov 3 | Delta Air Lines
        KRW 105,400
        20% off
        KRW 132,100 KRW 105,400
      • SEA 7:59 PM
        2h 52m
        Nonstop
        SAN 10:51 PM
        Seattle - San Diego | Tue, Oct 27 | Delta Air Lines
        KRW 105,400
        20% off
        KRW 132,100 KRW 105,400
      • SEA 7:59 PM
        2h 52m
        Nonstop
        SAN 10:51 PM
        Seattle - San Diego | Sat, Oct 31 | Delta Air Lines
        KRW 105,400
        20% off
        KRW 132,100 KRW 105,400
      • SEA 4:27 PM
        7h 30m
        1 stop
        SAN 11:57 PM
        Seattle - San Diego | Sat, Oct 31 | Frontier Airlines
        KRW 96,900
        27% off
        KRW 132,100 KRW 96,900
      • SEA 4:27 PM
        7h 30m
        1 stop
        SAN 11:57 PM
        Seattle - San Diego | Wed, Nov 18 | Frontier Airlines
        KRW 97,900
        26% off
        KRW 132,100 KRW 97,900
      • SEA 4:27 PM
        7h 30m
        1 stop
        SAN 11:57 PM
        Seattle - San Diego | Wed, Oct 28 | Frontier Airlines
        KRW 107,000
        19% off
        KRW 132,100 KRW 107,000
      • SEA 4:27 PM
        7h 30m
        1 stop
        SAN 11:57 PM
        Seattle - San Diego | Wed, Nov 11 | Frontier Airlines
        KRW 107,000
        19% off
        KRW 132,100 KRW 107,000
      • SEA 1:00 PM
        17h 25m
        1 stop
        SAN 2:00 PM
        Seattle - San Diego | Fri, Sep 25 | Normal Airline
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        Find more flights

Flight fares from Seattle-Tacoma International Airport to San Diego International Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.

Trip.com Price Insights: Flights from Seattle-Tacoma International Airport to San Diego International Airport

Which month has the lowest one-way flight price from Seattle-Tacoma International Airport to San Diego International Airport?

The data is based on the average one-way flight prices on Trip.com for flights from Seattle-Tacoma International Airport to San Diego International Airport across different months over the past 12 months.

Based on Trip.com data from the past 12 months, if you’re looking for low one-way flight fares from Seattle-Tacoma International Airport to San Diego International Airport, the best time to book is in December, with an average price of KRW 222,000. Try to avoid February, when prices are highest, averaging around KRW 428,600.

KRW 428,600
KRW 325,300
KRW 222,000
KRW 118,700
    Cheapest
  • KRW 322,700
    Sep
  • KRW 300,500
    Oct
  • KRW 330,700
    Nov
  • KRW 222,000
    Dec
  • KRW 315,400
    Jan
  • KRW 428,600
    Feb
  • KRW 266,500
    Mar
  • KRW 282,200
    Apr
  • KRW 257,800
    May
  • KRW 328,700
    Jun
  • KRW 347,200
    Jul
  • KRW 339,000
    Aug

Which month is the cheapest for round-trip flights from Seattle-Tacoma International Airport to San Diego International Airport?

The data is based on the average round-trip flight prices on Trip.com for flights from Seattle-Tacoma International Airport to San Diego International Airport across different months over the past 12 months.

Based on Trip.com data from the past 12 months, September is usually the cheapest month to find flights from Seattle-Tacoma International Airport to San Diego International Airport, with an average price of KRW 246,300. In contrast, November is typically the most expensive month, with average prices reaching KRW 720,700.

KRW 720,700
KRW 483,500
KRW 246,300
KRW 9,100
  • KRW 246,300
    Sep
  • KRW 338,300
    Oct
  • KRW 720,700
    Nov
  • KRW 560,400
    Dec
  • KRW 403,900
    Jan
  • KRW 332,100
    Feb
  • KRW 534,000
    Mar
  • KRW 562,200
    Apr
  • KRW 519,000
    May
  • KRW 430,400
    Jun
  • KRW 530,800
    Jul
  • KRW 254,600
    Aug

What is the cheapest day of the week to fly from Seattle-Tacoma International Airport to San Diego International Airport?

The data is based on the average flight prices on Trip.com from Seattle-Tacoma International Airport to San Diego International Airport across different days of the week over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to depart from Seattle-Tacoma International Airport to San Diego International Airport is usually Wednesday, with average fares typically lower than other days. Try to avoid departing on Sunday, as prices are usually the highest on that day.

KRW 376,500
KRW 322,800
KRW 269,100
KRW 215,400
    Cheapest
  • KRW 315,300
    Mon
  • KRW 274,000
    Tue
  • KRW 269,100
    Wed
  • KRW 303,700
    Thu
  • KRW 270,000
    Fri
  • KRW 282,400
    Sat
  • KRW 376,500
    Sun

Which airline offers the cheapest flights from Seattle-Tacoma International Airport to San Diego International Airport?

The cheapest airline flying from Seattle-Tacoma International Airport to San Diego International Airport is Frontier Airlines (from KRW 95,900) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From KRW 95,900
Alaska Airlines
From KRW 101,800
Delta Air Lines
From KRW 103,600
American Airlines
From KRW 120,200
United Airlines
From KRW 129,000
Hahn Air
From KRW 244,500
WestJet
From KRW 303,100

Find more flights and airlines

What is the flight schedule from Seattle-Tacoma International Airport to San Diego International Airport?

Check the schedule for flights from Seattle to San Diego and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS623

    Seattle-Tacoma International Airport

    7:59 PM

    SEA

    2h 51m

    10:50 PM

    SAN

    - - - W T F -
    Search

  2. DL2672

    Seattle-Tacoma International Airport

    7:59 PM

    SEA

    2h 50m

    10:49 PM

    SAN

    S M T W T F S
    Search

  3. DL2508

    Seattle-Tacoma International Airport

    7:15 AM

    SEA

    2h 54m

    10:09 AM

    SAN

    S M T W T F S
    Search

  4. AS765

    Seattle-Tacoma International Airport

    2:18 PM

    SEA

    2h 55m

    5:13 PM

    SAN

    S M T W T F S
    Search

  5. AS247

    Seattle-Tacoma International Airport

    6:21 PM

    SEA

    2h 55m

    9:16 PM

    SAN

    S M T W T F S
    Search

  6. F93406

    Seattle-Tacoma International Airport

    4:27 PM

    SEA

    2h 50m

    Nonstop

    8:17 PM

    DEN

    S M T W T F S
    Search

  7. F92711

    Denver International Airport

    10:29 PM

    DEN

    2h 22m

    Nonstop

    11:51 PM

    SAN

    S M T W T F S

  8. F94204

    Seattle-Tacoma International Airport

    9:53 PM

    SEA

    2h 38m

    Nonstop

    12:31 AM

    LAS

    S - T W T F S
    Search

  9. F91469

    Harry Reid International Airport

    6:00 PM

    LAS

    1h 20m

    Nonstop

    7:20 PM

    SAN

    S - - W T - S
Find more flights and airlines

About Seattle-Tacoma International Airport and San Diego International Airport

Learn about Seattle-Tacoma International Airport (SEA) and San Diego International Airport (SAN) — including location, terminals, transportation, and travel tips.

Flight distance1,693.46 km
Cheapest one-way ticket priceKRW 96,900
Cheapest return ticket priceKRW 118,200

FAQs for Seattle-Tacoma International Airport to San Diego International Airport Flights

  • How long is the flight from Seattle-Tacoma International Airport to San Diego International Airport?

    Seattle-Tacoma International Airport to San Diego International Airport takes about 2 hours 24 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 11 daily flights from Seattle-Tacoma International Airport (SEA) to San Diego International Airport (SAN).
  • The earliest flight from Seattle-Tacoma International Airport to San Diego International Airport departs at 07:15, and the last departs at 20:49, with about 16 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Seattle-Tacoma International Airport (SEA) to San Diego International Airport (SAN) is quite popular. Without considering departure times or holidays, tickets cost around KRW 448,500 in September, the most expensive month to book this route.
    • The distance from San Diego International Airport to downtown is about 3 km. It takes about 20 minutes by taxi.
    • The distance from McClellan-Palomar Airport to downtown is about 47 km. It takes about 1 hour by taxi.
  • Delta Air Lines is a very popular airline operating an average of 2627 flights per month.
  • One-way flights from Seattle-Tacoma International Airport to San Diego International Airport currently start from KRW 96,900, and round-trip fares start from KRW 118,200. The current lowest fare is a Frontier Airlines flight departing on Sat, Oct 31; prices may vary depending on availability.
  • Yes. Alaska Airlines and Delta Air Lines operate direct flights from Seattle-Tacoma International Airport to San Diego International Airport, with an average flight time of 2 hours 21 minutes, and around 101 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Seattle-Tacoma International Airport to San Diego International Airport is KRW 228,600. Prices may vary depending on the departure date, airline, and availability.
  • WestJet and Condor are the most popular budget airlines flying from Seattle-Tacoma International Airport to San Diego International Airport, with one-way fares starting from KRW 96,900. Compare final prices carefully, as baggage, seat selection and payment fees may apply.
  • Seattle-Tacoma International Airport to San Diego International Airport operates around 71 weekly flights, mainly by Alaska Airlines and Delta Air Lines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Seattle-Tacoma International Airport and San Diego International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are the lowest estimated prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before payment. Charges for checked baggage, onboard meals, Wi-Fi, and other optional services may also appear in the flight cards where applicable.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and for many routes the data may refresh in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.