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Cheap Flights from Seattle to San Diego

Compare Seattle to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Seattle to San Diego

Looking for a cheap last-minute deal or the best return flight from Seattle to San Diego? Find the lowest prices on one-way and return tickets right here.
San Diego.Rs16,413 per passenger.Departing Thu, 22 Jan.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Thu, 22 Jan, arriving in San Diego International.Price includes taxes and charges.From Rs16,413, select.
San Diego.Rs16,812 per passenger.Departing Sun, 15 Mar.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Seattle / Tacoma International on Sun, 15 Mar, arriving in San Diego International.Price includes taxes and charges.From Rs16,812, select.
San Diego.Rs17,498 per passenger.Departing Fri, 12 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 12 Dec, arriving in San Diego International.Price includes taxes and charges.From Rs17,498, select.
San Diego.Rs18,610 per passenger.Departing Fri, 6 Feb.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 6 Feb, arriving in San Diego International.Price includes taxes and charges.From Rs18,610, select.
San Diego.Rs20,300 per passenger.Departing Fri, 6 Feb.One-way flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Fri, 6 Feb, arriving in San Diego International.Price includes taxes and charges.From Rs20,300, select.
San Diego.Rs21,167 per passenger.Departing Mon, 5 Jan.One-way flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Mon, 5 Jan, arriving in San Diego International.Price includes taxes and charges.From Rs21,167, select.
San Diego.Rs31,606 per passenger.Departing Sat, 11 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 11 Apr, arriving in San Diego International.Price includes taxes and charges.From Rs31,606, select.
San Diego.Rs41,019 per passenger.Departing Wed, 8 Apr.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Seattle / Tacoma International on Wed, 8 Apr, arriving in San Diego International.Price includes taxes and charges.From Rs41,019, select.
Map with a flight path from Seattle to San Diego. A plane icon is halfway along the route with a label that says "Direct flight".
Direct flight

Your route at a glance

Cheapest dealRs30,733
Cheapest monthJanuary
Average flight duration2 hours and 50 minutes
Most popular airlineAlaska Airlines

Find the cheapest month to fly from Seattle to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to San Diego flights are currently cheapest in January.
Nov
from Rs99,631
Dec
from Rs17,498
Jan
from Rs16,413
Feb
from Rs18,610
Mar
from Rs16,812
Apr
from Rs31,606
May
from Rs43,317
Jun
from Rs43,275
Jul
from Rs43,334
Aug
from Rs43,275
Sep
from Rs43,275
Oct
Find prices

Direct flights from Seattle to San Diego

Alternative Seattle to San Diego routes

Looking for the cheapest, fastest or easiest route from Seattle to San Diego? You could fly into the following airports instead.

Finding cheap flights from Seattle to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Seattle to San Diego is Rs30,733. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 50 minutes is the average flight time from Seattle to San Diego.
Air Tahiti Nui, Alaska Airlines and Qatar Airways fly direct from Seattle to San Diego.
As of November 2025, there are 499 flights per week flying from Seattle to San Diego.
The cheapest month to fly from Seattle to San Diego is usually January.
If you're flying from Seattle, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from Rs30,733.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to San Diego on Thursday, 22 January 2026.
Yes – the average flight time is 2 hours and 50 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In November, the average temperature is usually around 16°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
The cheapest airline that flies to San Diego is Hawaiian Airlines .

Travelling from Seattle to San Diego: what you need to know

  • Get your trip started at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Search for flights from Seattle to San Diego that depart from this base.

  • The major gateways to San Diego are San Diego International Airport (SAN) and McClellan-Palomar Airport (CLD).

  • The average time for a direct Seattle to San Diego flight is 2 hours 50 minutes.

  • Seattle and San Diego follow the same timezone, UTC-7.

  • Seattle-Tacoma International Airport (SEA) to San Diego International Airport (SAN) is the most popular route that connects these two cities. There are 91 flights a week to choose from. If you have things to finalize before heading off, the last flight from Seattle to San Diego is with Alaska Airlines at 21:15. Opt for the first SEA to SAN departure operated by Alaska Airlines at 06:00 to maximise your time in San Diego.

  • To ensure you board your Seattle to San Diego flight, allow plenty of time to check in and find your gate. Arriving two hours before international departures and an hour before domestic flights is the general rule.

  • Be prepared for longer queues during popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure will help ensure a smooth travel experience.

How to find the cheapest flights from Seattle to San Diego

  • Lock in cheap Seattle to San Diego flights by booking two months ahead. According to our research, that's the ideal time frame for finding a bargain.

  • The best month for landing cheap plane tickets from Seattle to San Diego is May. Use the 'Whole month' tool to compare prices, then choose the dates with the lowest fares.

  • Finding a cheap flight from Seattle to San Diego is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when there's a better deal.

  • Pick your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your Seattle to San Diego flight results by 'Best,' 'Cheapest' or 'Fastest.'

Flying from Seattle

Seattle-Tacoma International Airport (SEA)

  • Set off from Seattle-Tacoma International Airport (SEA) on a nonstop flight from Seattle to San Diego. From SEA, you can land directly at San Diego International Airport (SAN).

  • Reserve your Seattle to San Diego plane tickets with Alaska Airlines. This airline is a popular option for direct flights from SEA.

  • The journey from central Seattle to SEA takes around 55 minutes by public transport. If you drive, ride-share or grab a cab, you'll cover the 18 kilometres in 20 minutes or so, depending on traffic conditions.

  • Want an easy start to your trip? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to San Diego or just don't want to be rushed, these hotels are perfect:

  • 81.27% of flights departing from Seattle-Tacoma International Airport touch down at their destination according to schedule. Given its strong on-time stats, you're unlikely to experience delays when jetting out of SEA.

Arriving in San Diego

San Diego International Airport (SAN)

  • The distance from San Diego International Airport (SAN) to central San Diego is approximately 5 kilometres. It'll take you about 10 minutes to reach the centre driving.

  • If you're taking public transport, expect a journey time of around 20 minutes.

  • Consider staying in a hotel close to SAN if you're coming in on a late flight from Seattle to San Diego. Check in to one of these accommodation options and avoid the hassle of a long transfer:

  • Say yes to new adventures by picking up a San Diego International Airport rental car. Grab your wheels from Thrifty, Dollar or Budget and experience the lesser-explored corners of San Diego and beyond.

  • For the best deal, book your vehicle from San Diego International Airport around two weeks in advance of your Seattle to San Diego flight.

  • The address for SAN is N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • McClellan-Palomar Airport (CLD) is roughly 48 kilometres from the centre of San Diego. After your flight from Seattle to San Diego, it takes approximately 40 minutes to get to the heart of the city in a cab or ride-share.

  • If you hop on public transport, the ride to the centre will take you 2 hours 15 minutes or so.

  • Forget about public transport schedules or slow-moving cab lines. Grab a McClellan-Palomar Airport rental car and take your trip in whatever direction you choose. Compare rates and availability from Budget, Hertz and Avis.

  • Get the vehicle you actually want, not just what's left over, by reserving your ride from CLD ahead of time. You can also avoid paying more than you have to, especially when demand is high.

Best time to go to San Diego

  • July is the busiest month for flights from Seattle to San Diego. To steer clear of the crowds, head to San Diego in May.

  • Before locking in your Seattle to San Diego tickets, consider what kind of weather you prefer. August is the warmest month in San Diego, with temperatures ranging from 17ºC to 28ºC.

  • Look for cheap flights from Seattle to San Diego in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 7ºC and 23ºC on average.

More about San Diego

Explore more of United States

  • Los Angeles is just one of the many places in United States waiting to be explored after you've seen San Diego. Around 177 kilometres to the north-west, its top attractions include Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Phoenix is another must-experience destination in United States and is around 483 kilometres east of San Diego. No trip is complete without visiting Desert Botanical Garden, Heard Museum and Papago Park.

Plan the rest of your trip from Seattle to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.