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Flights from Seattle to San Diego

Cheapest airlines flights from Seattle to San Diego

Fly from Seattle to San Diego with 5 carriers, including Alaska Airlines, Delta Air Lines, and Hawaiian Airlines. Alaska Airlines offers the cheapest flights from Seattle to San Diego.
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Find cheap flights from Seattle to San Diego

Non stop flights available! Find direct flights from Seattle to San Diego within the next 3 months. Book one way flights from US$74 or round trip tickets from US$119.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Seattle to San Diego Flight Information

The distance between Seattle and San Diego is approximately 1,692.33 km. On average, a flight from Seattle to San Diego takes around 2 hours 52 minutes. The most popular month to fly to San Diego is March. The off-season for travel is April.

Cheapest one-way flight price US$67
Cheapest round-trip ticket price US$113
Off-season for travel April
Peak season for travel March
Flight distance 1,692.33 km
Average flight time 2 hours 52 minutes
Popular airline Alaska Airlines

When is the cheapest time to book flights from Seattle to San Diego?

Best time for cheap flights from Seattle to San Diego are between Aug 24 and Aug 31 with one way fares from US$66

Cheapest flights
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    28 5
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Seattle (SEA) to San Diego (SAN) the cheapest?

    Airlines adjust prices for flights from Seattle to San Diego based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Seattle (SEA) to San Diego (SAN) cost?

    According to Trip.com's data, the lowest price is around $250.

  • How long does it take to fly from Seattle (SEA) to San Diego (SAN) and what is the distance?

    It takes around 2 hours 52 minutes to fly from Seattle (SEA) to San Diego (SAN).

  • What are the most popular airlines that fly from Seattle (SEA) to San Diego (SAN)?

How to find a cheap flight from Seattle to San Diego

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to San Diego. Book your flights at the right time and save more.
1
Being flexible with your dates to get the cheapest Seattle to San Diego ticket.
Tap "Date" on flight search bar to scan through the calender for Seattle to San Diego airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Tue, Sep 9 at US$74 for one-way flights.
2
Compare cheap Seattle to San Diego flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Seattle to San Diego. The cheapest airline operating is Southwest Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your Seattle to San Diego route, you can easily track the price of your airline tickets from Seattle to San Diego without manually checking every day.
4
Don't miss cheap Seattle to San Diego flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com free app and search for cheap flight tickets from Seattle to San Diego to get exclusive deals for you.

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