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How to get the cheapest flight ticket from Seattle to San Diego
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Diego?
The month of September is, on average, the cheapest month to fly to San Diego from Seattle, with most prices found around R3 478. The month of January is another great option to travel to San Diego, with average flight prices from Seattle averaging around R3 515.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from Seattle to San Diego is on a Monday. Travellers who choose to depart for San Diego on a Monday will often find tickets for as low as R0. On the other hand, Saturday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travellers. As a result, prices tend to be around R4 655.
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from Seattle when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around R4 834 when searching 19 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Seattle for as low as R3 868 on momondo.
How have Seattle to San Diego flight prices changed over time?
As of April 2025, prices for Seattle to San Diego flights are approximately 25% more expensive when compared to flights at the same time last year.
When to book flights from Seattle to San Diego
Cheap Seattle to San Diego (SEA to SAN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to San Diego
How far is Seattle/Tacoma Intl to San Diego by plane?
There are 1711,9 km between Seattle/Tacoma Intl and San Diego.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?
Prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport were last updated today.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Seattle to San Diego?
momondo data reveals that the most frequently booked plane model on the route from Seattle to San Diego is Boeing 737-900 Passenger/BBJ3 (winglets), representing 22,96% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 22,38%, Boeing 737 at 21,53%, and Boeing 737 MAX 9 at 15,28%.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to San Diego?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to San Diego for you.
Can I find flights from Seattle to San Diego with flexible booking policies on momondo?
Yes. All flights to San Diego from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to San Diego?
momondo helps you find the best flight between Seattle and San Diego by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Seattle to San Diego right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Seattle and alert you when they change.