Cheap flights from Seattle to San Diego (SEA - SAN)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Seattle/Tacoma Intl to San Diego are usually found in January or October, booked 60 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

How to find the cheapest flight from
Seattle (SEA) to San Diego (SAN)

All the information you need to plan the best SEA to SAN flight in 2021: compare Seattle to San Diego flight prices with the expected peak season, weather and rainfall in San Diego.
SEA - SAN
Price
$137 - $249
SAN
Temperature
66.2 - 80.6 °F
SAN
Precipitation
0 - 2.8 inches

Popular in

December

High demand for flights, 28% potential price rise

Cheapest in

January

Best time to find cheap flights, 23% potential price drop

Round-trip from

$137

From Seattle/Tacoma Intl to San Diego

One-way from

$51

One-way flight from Seattle/Tacoma Intl to San Diego

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to San Diego?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Seattle to San Diego?

To save up to 89% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to San Diego from $219 1-2 weeks out and tickets from $339 for flights departing within the next 72 hours.

When is the cheapest time to fly from Seattle to San Diego (SEA - SAN)?

It’s optimal to fly from Seattle to San Diego at noon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the morning.

Cheap flights from Seattle to San Diego in September, October 2021

The best prices found for SEA to SAN flights for September, October
4 Oct - 5 Oct
$66pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Sep - 30 Sep
$77pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
19 Oct - 20 Oct
$78pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
SAN
San Diego
SAN
San Diego
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to San Diego 2021 flight deals

Cheap flights to San Diego from Seattle found for this year
4 Oct - 5 Oct
$66pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
12 Nov - 15 Nov
$72pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Sep - 30 Sep
$77pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to San Diego from Seattle

Save time with Seattle to San Diego direct flight deals
14 Oct - 17 Oct
$87pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
13 Oct - 16 Oct
$93pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
15 Oct - 18 Oct
$96pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to San Diego

Late deals on round-trip flights to San Diego from Seattle, departing today and this week
27 Sep - 30 Sep
$74pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
27 Sep - 30 Sep
$77pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
24 Sep - 3 Oct
$105pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to San Diego from Seattle

The cheapest one-way flights from Seattle to San Diego
4:45 am - 7:39 am
Alaska Airlines
Nonstop
2h 54m
SEA - SAN
Alaska Airlines
$51
mytrip.com
5:38 am - 3:24 am
Multiple Airlines
1 Stop
21h 46m
SEA - SAN
Multiple Airlines
$61
Kiwi.com
3:12 am - 5:59 am
Delta
Nonstop
2h 47m
SEA - SAN
Delta
$69
Delta

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">San Diego</span> flights.

Flight FAQs

From Seattle to San Diego

What airports do I use to fly from Seattle to San Diego?

Booking a flight from Seattle/Tacoma Intl (SEA) to San Diego (SAN) is your only option if you wish to fly from Seattle to San Diego. On a typical day, there are 17 flights from Seattle/Tacoma Intl to San Diego, all of which are around 2h 35m for a nonstop flight. You can also purchase a plane ticket from 9 airlines when you book a flight from Seattle/Tacoma Intl to San Diego.

Which airlines flying from Seattle/Tacoma Intl to San Diego have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Seattle/Tacoma Intl to San Diego that may be offering flexible cancellation policies are Delta, Alaska Airlines, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Are flight prices decreasing from Seattle to San Diego due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and San Diego for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Seattle to San Diego for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle to San Diego for under $100. The cheapest flight booked recently is on Spirit Airlines for just $66, but on average you can expect to pay $86.

Are there nonstop flights from Seattle to San Diego for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to San Diego under $100. A good price for a nonstop flight from Seattle to San Diego is less than $121.

Are there last-minute flights available from Seattle to San Diego for under $100?

There are currently 20+ open flights from Seattle to San Diego within the next 7 days for less than $100.

What days are nonstop flights available from Seattle to San Diego?

Nonstop flights are available for this route on the following days: Tuesday, Wednesday, Thursday.

How popular is this Seattle to San Diego flight route?

The Seattle/Tacoma Intl to San Diego flight path was viewed by 343 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How many flights depart from Seattle to San Diego on average per day?

On average 16 flights depart from Seattle to San Diego per day.
Morning (6am - Noon) - 25% of flight departures
Afternoon (Noon - 6pm) - 50% of flight departures
Evening (6pm - Midnight) - 25% of flight departures

How long is the flight from Seattle to San Diego?

Spirit Airlines, Frontier, and Alaska Airlines can get you from Seattle to San Diego in just under 2h 39m. Your travel time can differ by up to 5h 39m. The distance from Seattle to San Diego is about 1057 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Seattle to San Diego round-trip?

Flying on Spirit Airlines is currently your cheapest option to San Diego, with prices starting at $66. Additional round-trip tickets that might be worth considering are offered by Frontier and Alaska Airlines, with the lowest prices starting at $78 and $87, respectively. Users have found that Spirit Airlines is 63% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Seattle to San Diego one-way?

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $31. Alaska Airlines flights start at $42 while deals on Frontier start at $47 one-way.

COVID Restrictions

View COVID Travel Restrictions for San Diego, CA

Do I need a COVID test to fly to San Diego from Seattle?

Information is based on travel restrictions for travel to San Diego within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter San Diego.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Diego.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering San Diego.

Do I need a test to fly back to Seattle from San Diego?

Returning to Seattle/Tacoma Intl from San Diego

COVID-19 testing requirements
Visitors from San Diego must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from San Diego are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for San Diego, CA

Alternative routes for Seattle to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Diego

Things to know before you go - useful duration and weather info for your trip from Seattle to San Diego.
Flight duration from SEA to SAN
2h 55m
Average temperature for September in San Diego
80.6 °F
Avg rainfall for September in San Diego
0.1 ″

Airports servicing Seattle

Airports servicing San Diego

Top 8 airlines flying from Seattle/Tacoma Intl to San Diego

The chart below displays the airlines Cheapflights users traveling from Seattle to San Diego choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
United Airlines
$67 $173 No cancel fee 69%
Spirit Airlines
$74 $174 No cancel fee 65%
Frontier
$106 $182 No cancel fee 62%
Alaska Airlines
$68 $199 No cancel fee 75%
Delta
$68 $207 No cancel fee N/A
Southwest
$78 $263 No cancel fee 63%
Endeavor Airlines
$125 $274 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by Endeavor Airlines. Please check directly on their website for additional information.

American Airlines
$102 $329 No cancel fee 71%

Hourly flight availability from Seattle to San Diego

See what time of day planes typically take off from Seattle towards San Diego.
Afternoon Noon to 6 PM 48% of SEA to SAN departures
Morning 6 AM to noon 34% of SEA to SAN departures
Evening 6 PM to midnight 10% of SEA to SAN departures
Early morning Midnight to 6 AM 8% of SEA to SAN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to San Diego
See how many times per day planes take to the skies headed from Seattle to San Diego.
Sunday
18 daily flights
Monday
20 daily flights
Tuesday
11 daily flights
Wednesday
15 daily flights
Thursday
13 daily flights
Friday
22 daily flights
Saturday
21 daily flights
Home North America USA California San Diego Cheap flights from Seattle to San Diego