This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
15 Sep — 22 Sep1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Diego are usually found in January or September, booked 88 days in advance, depart on a Monday or Tuesday and return on a Monday
Cheap flight deals from Seattle to San Diego
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from Seattle to San Diego
Explore the most affordable flight options available from Seattle to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 August 2026.
Sat 5/917:30 -
Nonstop2h 55m
Fri 11/919:05 -
1 stop5h 40m
Deal found 12/8£114
Sat 5/917:55 -
Nonstop2h 53m
Mon 7/907:03 -
Nonstop3h 02m
Deal found 14/8£116
Sat 5/907:15 -
Nonstop2h 56m
Sun 6/907:03 -
Nonstop3h 02m
Deal found 11/8£117
Wed 16/916:27 -
1 stop7h 24m
Fri 18/921:03 -
1 stop12h 39m
Deal found 13/8£117
Fri 30/1017:10 -
Nonstop2h 50m
Sat 31/1006:35 -
2 stops9h 15m
Deal found 13/8£118
Thu 12/1107:30 -
1 stop4h 20m
Mon 16/1118:05 -
Nonstop3h 05m
Deal found 14/8£120
Fri 11/916:35 -
1 stop5h 35m
Mon 21/917:30 -
1 stop4h 20m
Deal found 14/8£121
Fri 11/917:50 -
Nonstop3h 00m
Tue 15/907:00 -
Nonstop3h 05m
Deal found 12/8£122
Fri 11/917:50 -
Nonstop3h 00m
Mon 14/908:30 -
Nonstop3h 00m
Deal found 12/8£123
Thu 17/909:05 -
Nonstop2h 45m
Tue 22/917:00 -
1 stop4h 45m
Deal found 14/8£123
Thu 12/1107:30 -
1 stop4h 20m
Tue 17/1117:05 -
1 stop4h 25m
Deal found 15/8£124
Fri 11/917:50 -
Nonstop3h 00m
Sun 13/908:45 -
Nonstop3h 00m
Deal found 12/8£126
Best flights from Seattle to San Diego
Discover carefully curated flight deals from Seattle to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 August 2026.
Sat 5/909:15 -
Nonstop2h 45m
Sat 12/916:40 -
Nonstop3h 00m
Deal found 11/8£131
Wed 23/907:15 -
Nonstop2h 54m
Sat 26/907:00 -
Nonstop3h 05m
Deal found 11/8£146
Mon 26/1011:31 -
Nonstop3h 07m
Mon 2/1110:54 -
1 stop5h 58m
Deal found 14/8£151
Thu 24/919:41 -
Nonstop2h 52m
Sat 26/907:00 -
Nonstop3h 05m
Deal found 11/8£149
Sat 26/906:00 -
1 stop5h 05m
Sat 3/1016:55 -
Nonstop3h 05m
Deal found 12/8£153
Thu 24/909:45 -
Nonstop2h 57m
Sun 27/907:00 -
Nonstop3h 05m
Deal found 14/8£153
Fri 18/920:49 -
Nonstop2h 55m
Mon 21/921:51 -
1 stop10h 12m
Deal found 15/8£170
Wed 16/905:55 -
2 stops5h 50m
Tue 22/916:10 -
2 stops5h 35m
Deal found 11/8£168
Sun 18/1010:20 -
Nonstop3h 03m
Tue 27/1008:50 -
1 stop6h 19m
Deal found 15/8£170
Wed 16/905:55 -
2 stops5h 50m
Fri 18/919:05 -
1 stop5h 40m
Deal found 13/8£168
Tue 17/1118:30 -
Nonstop2h 45m
Fri 20/1109:45 -
Nonstop3h 15m
Deal found 13/8£169
Direct flights from Seattle to San Diego
Explore direct flight options from Seattle to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 August 2026.
Sat 5/917:55 -
Nonstop2h 53m
Mon 7/907:03 -
Nonstop3h 02m
Deal found 14/8£116
Sat 5/907:15 -
Nonstop2h 56m
Sun 6/907:03 -
Nonstop3h 02m
Deal found 11/8£117
Fri 11/917:50 -
Nonstop3h 00m
Tue 15/907:00 -
Nonstop3h 05m
Deal found 12/8£122
Fri 11/917:50 -
Nonstop3h 00m
Mon 14/908:30 -
Nonstop3h 00m
Deal found 12/8£123
Fri 11/917:50 -
Nonstop3h 00m
Sun 13/908:45 -
Nonstop3h 00m
Deal found 12/8£126
Sat 5/909:15 -
Nonstop2h 45m
Sat 12/916:40 -
Nonstop3h 00m
Deal found 11/8£131
Wed 13/117:00 -
Nonstop2h 35m
Sat 23/109:20 -
Nonstop3h 05m
Deal found 13/8£132
Wed 2/917:30 -
Nonstop2h 50m
Sun 6/908:40 -
Nonstop3h 00m
Deal found 12/8£134
Fri 18/917:50 -
Nonstop3h 00m
Wed 23/918:00 -
Nonstop3h 00m
Deal found 13/8£134
Mon 23/1107:55 -
Nonstop2h 45m
Fri 27/1109:45 -
Nonstop3h 15m
Deal found 14/8£143
Fri 11/917:50 -
Nonstop3h 00m
Mon 21/916:40 -
Nonstop2h 55m
Deal found 14/8£145
Wed 16/914:18 -
Nonstop2h 55m
Sat 19/906:15 -
Nonstop3h 05m
Deal found 14/8£146
Last-minute flights from Seattle to San Diego
Discover last-minute flight deals from Seattle to San Diego. Data last updated 16 August 2026 and is based on user searches.
Sat 5/917:30 -
Nonstop2h 55m
Fri 11/919:05 -
1 stop5h 40m
Deal found 12/8£114
Sat 5/907:15 -
Nonstop2h 56m
Sun 6/907:03 -
Nonstop3h 02m
Deal found 12/8£116
Sat 5/917:30 -
Nonstop2h 55m
Mon 14/916:50 -
1 stop6h 10m
Deal found 16/8£120
Fri 11/916:35 -
1 stop5h 35m
Mon 21/917:30 -
1 stop4h 20m
Deal found 14/8£121
Fri 11/917:50 -
Nonstop3h 00m
Tue 15/907:00 -
Nonstop3h 05m
Deal found 12/8£122
Fri 11/917:50 -
Nonstop3h 00m
Mon 14/908:30 -
Nonstop3h 00m
Deal found 12/8£123
Fri 11/917:50 -
Nonstop3h 00m
Sun 13/908:45 -
Nonstop3h 00m
Deal found 12/8£126
Sat 12/906:00 -
1 stop5h 05m
Mon 14/916:50 -
1 stop6h 10m
Deal found 13/8£127
Wed 16/916:27 -
1 stop7h 24m
Fri 18/921:03 -
1 stop12h 39m
Deal found 13/8£117
Thu 17/909:05 -
Nonstop2h 45m
Tue 22/917:00 -
1 stop4h 45m
Deal found 14/8£123
One-way flights from Seattle to San Diego
Search for one-way flight options from Seattle to San Diego. Find affordable one-way fares based on user searches. Data last updated 16 August 2026.
Mon 23/1109:00 -
2 stops8h 17m
Deal found 13/8£72
Sat 10/1007:50 -
Nonstop2h 55m
Deal found 12/8£73
Thu 29/1007:40 -
Nonstop2h 55m
Deal found 13/8£74
Wed 9/917:30 -
Nonstop2h 55m
Deal found 12/8£75
Sun 4/1006:45 -
Nonstop2h 50m
Deal found 12/8£77
Thu 12/1107:30 -
1 stop4h 20m
Deal found 13/8£78
Mon 14/920:49 -
Nonstop2h 55m
Deal found 14/8£81
Mon 25/108:50 -
1 stop4h 35m
Deal found 12/8£81
Sun 20/906:32 -
1 stop5h 03m
Deal found 11/8£84
Wed 13/105:40 -
2 stops6h 05m
Deal found 12/8£85
Tue 1/1205:40 -
2 stops9h 45m
Deal found 13/8£86
Fri 13/1109:10 -
2 stops7h 45m
Deal found 13/8£88
Find flight deals from Seattle to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 August 2026.
Customise your flight search to find flights from Seattle to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 August 2026.
Use the filters below to find and compare flights from Seattle to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Sat 5/9
09:15-12:00
Nonstop2h 45m
San Diego
Sat 12/9
16:40-19:40
Nonstop3h 00m
£131
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Wed 23/9
07:15-10:09
Nonstop2h 54m
San Diego
Sat 26/9
07:00-10:05
Nonstop3h 05m
£146
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Thu 24/9
19:41-22:33
Nonstop2h 52m
San Diego
Sat 26/9
07:00-10:05
Nonstop3h 05m
£149
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Mon 26/10
11:31-14:38
Nonstop3h 07m
San Diego
Mon 2/11
10:54-16:52
1 stop5h 58m
£151
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Sat 26/9
06:00-11:05
1 stop5h 05m
San Diego
Sat 3/10
16:55-20:00
Nonstop3h 05m
£153
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Thu 24/9
09:45-12:42
Nonstop2h 57m
San Diego
Sun 27/9
07:00-10:05
Nonstop3h 05m
£153
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Wed 16/9
05:55-11:45
2 stops5h 50m
San Diego
Tue 22/9
16:10-21:45
2 stops5h 35m
£168
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Wed 16/9
05:55-11:45
2 stops5h 50m
San Diego
Fri 18/9
19:05-00:45
1 stop5h 40m
£168
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Tue 17/11
18:30-21:15
Nonstop2h 45m
San Diego
Fri 20/11
09:45-13:00
Nonstop3h 15m
£169
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Fri 18/9
20:49-23:44
Nonstop2h 55m
San Diego
Mon 21/9
21:51-08:03
1 stop10h 12m
£170
Flights are sorted by cheapest return flights first.
Deals found on 13/8
Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Seattle to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Seattle with our price prediction graph.
SEA-SAN
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to San Diego
Prices
Airlines
Delays
How far ahead should I book a flight from Seattle to San Diego?
The best time to book flights from Seattle to San Diego is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to San Diego?
Currently, January is the cheapest month in which you can book a flight from Seattle to San Diego (average of £143). Flying from Seattle to San Diego in June is currently the most expensive (average of £242). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to SAN?
Find hourly flight availability from Seattle to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 August 2026.
It’s optimal to fly from Seattle to San Diego in the afternoon. By choosing this option you can save up to 61% on the cost of your flight, compared to a flight at midday.
How much does it cost for a return flight from Seattle to San Diego?
Airfare is below average for this route at the moment.
Seattle to San Diego flights typically cost between £148 and £254 in September.The cheapest return price found within the last 5 days was £114 on Southwest (5 Sept–11 Sept).
Weekly flight availability from Seattle to San Diego
Explore weekly flight availability from Seattle to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 August 2026.
The most flights from SEA to SAN are scheduled on a Friday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How often are flights from Seattle to San Diego delayed?
About 16% of weekly flights between Seattle and San Diego have experienced delays in the past year, with the average delay time being 122 minutes.
What is the most punctual flight time for Seattle to San Diego flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to San Diego flights?
Over the past year, Delta have had the lowest number of delays on this route, with just 13% of flights being delayed.
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated 16 August 2026.
Read reviews from past customers who have flown with Delta
from Seattle to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
The snacks were not very good, not everyone was very friendly and professional
Related info for your journey
Find useful and relevant information for your journey from Seattle to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airports do I use to fly from Seattle to San Diego?
To fly from Seattle to San Diego, you need to book a flight from Seattle/Tacoma Intl (SEA) to San Diego (SAN). Nonstop flights to San Diego from Seattle/Tacoma Intl take 2h 55m on average. When it comes time to book airfare, you have a few options: there are 17 outbound flights from Seattle/Tacoma Intl to San Diego offered by 1 airline.
How popular is this Seattle to San Diego flight route?
This flight path from Seattle/Tacoma Intl to San Diego was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Seattle to San Diego?
Departing from Seattle to San Diego will take you 2h 55m. Seattle and San Diego are separated by a distance of 1051 mi. Most flights are nonstop.
What is the cheapest airline to fly from Seattle to San Diego round-trip?
Currently priced at £222, Delta will fly you from Seattle to San Diego and back. In addition to Delta, many other airlines offer competitively priced options for your trip.
What are the most reliable airlines from Seattle to San Diego?
No one likes to see their flight delayed. When booking a flight from Seattle to San Diego consider choosing Korean Air (88%), KLM (88%) or Scandinavian Airlines (84%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Seattle to San Diego?
Looking for the cheapest flight from Seattle to San Diego? While on average our users pay £230, our data indicates the cheapest price to be £195. The most popular route (Seattle/Tacoma Intl - San Diego), is priced around £149.
Can I find deals for business class flights from Seattle to San Diego?
Yes. Cheapflights offers flight deals from Seattle to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seattle to San Diego?
Currently, January is the cheapest month in which you can book a flight from Seattle to San Diego (average of £143). Flying from Seattle to San Diego in June is currently the most expensive (average of £242). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 16 August 2026.
Discover the top airline that operate flights from Seattle to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 August 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to San Diego?
When you search for this flight from Seattle to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Seattle to San Diego?
Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to San Diego for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Seattle to San Diego with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to San Diego flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to San Diego become cheaper?
Yes, Cheapflights offers price alerts on Seattle to San Diego flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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