This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
29 Oct — 5 Nov1
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 Tuesday or Monday and return on a Tuesday
Cheap flight deals from Seattle to San Diego
Enter your travel dates to find the best prices.
Cheapest
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 29 September 2026.
Sat 24/1016:54 -
Nonstop2h 49m
Sat 31/1006:15 -
Nonstop3h 13m
Deal found 25/9£113
Wed 21/1020:35 -
Nonstop2h 51m
Mon 26/1020:28 -
Nonstop3h 09m
Deal found 29/9£115
Thu 22/1007:40 -
Nonstop2h 55m
Thu 29/1007:25 -
Nonstop3h 05m
Deal found 28/9£119
Tue 27/1019:59 -
Nonstop2h 52m
Sat 31/1015:59 -
Nonstop3h 06m
Deal found 27/9£119
Wed 11/1116:27 -
1 stop7h 30m
Wed 18/1106:25 -
1 stop8h 47m
Deal found 27/9£120
Thu 12/1106:30 -
1 stop4h 10m
Thu 19/1117:45 -
Nonstop3h 10m
Deal found 28/9£123
Sat 24/1014:15 -
1 stop4h 55m
Sat 31/1016:35 -
Nonstop3h 05m
Deal found 25/9£126
Mon 2/1107:30 -
1 stop4h 20m
Wed 18/1117:05 -
1 stop4h 35m
Deal found 28/9£127
Wed 21/1005:50 -
2 stops5h 45m
Mon 26/1007:25 -
Nonstop3h 05m
Deal found 29/9£130
Wed 28/1005:50 -
2 stops5h 45m
Wed 4/1117:00 -
1 stop4h 40m
Deal found 28/9£135
Fri 27/1106:00 -
Nonstop2h 48m
Tue 8/1206:15 -
Nonstop3h 17m
Deal found 29/9£138
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 29 September 2026.
Sat 23/111:05 -
1 stop4h 20m
Tue 26/116:30 -
Nonstop3h 05m
Deal found 25/9£126
Fri 23/1019:07 -
Nonstop2h 51m
Sat 24/1006:15 -
Nonstop3h 13m
Deal found 28/9£164
Mon 2/1118:35 -
Nonstop2h 45m
Mon 9/1115:30 -
1 stop6h 40m
Deal found 25/9£126
Wed 21/1007:30 -
Nonstop2h 55m
Mon 26/1016:20 -
1 stop6h 15m
Deal found 29/9£126
Wed 21/1007:30 -
Nonstop2h 55m
Wed 28/1015:00 -
2 stops8h 00m
Deal found 29/9£130
Fri 11/1220:09 -
Nonstop2h 50m
Tue 15/1215:53 -
1 stop16h 15m
Deal found 27/9£174
Sat 24/1010:55 -
1 stop6h 45m
Sat 31/1013:15 -
1 stop4h 35m
Deal found 27/9£134
Wed 11/1105:15 -
2 stops6h 30m
Wed 18/1117:05 -
1 stop4h 35m
Deal found 27/9£135
Mon 26/1005:30 -
1 stop5h 10m
Wed 28/1015:00 -
2 stops8h 00m
Deal found 28/9£138
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 29 September 2026.
Sat 24/1016:54 -
Nonstop2h 49m
Sat 31/1006:15 -
Nonstop3h 13m
Deal found 25/9£113
Wed 21/1020:35 -
Nonstop2h 51m
Mon 26/1020:28 -
Nonstop3h 09m
Deal found 29/9£115
Thu 22/1007:40 -
Nonstop2h 55m
Thu 29/1007:25 -
Nonstop3h 05m
Deal found 28/9£119
Tue 27/1019:59 -
Nonstop2h 52m
Sat 31/1015:59 -
Nonstop3h 06m
Deal found 27/9£119
Thu 29/1009:59 -
Nonstop2h 59m
Sat 31/1007:45 -
Nonstop3h 13m
Deal found 29/9£134
Sat 24/1007:15 -
Nonstop2h 52m
Mon 26/1015:59 -
Nonstop3h 06m
Deal found 29/9£135
Fri 27/1106:00 -
Nonstop2h 48m
Tue 8/1206:15 -
Nonstop3h 17m
Deal found 29/9£138
Thu 22/1020:07 -
Nonstop2h 51m
Thu 29/1017:20 -
Nonstop3h 06m
Deal found 28/9£141
Thu 29/1015:18 -
Nonstop2h 44m
Sun 1/1107:45 -
Nonstop3h 13m
Deal found 29/9£153
Mon 26/1021:08 -
Nonstop2h 51m
Mon 2/1119:45 -
Nonstop3h 12m
Deal found 28/9£156
Thu 19/1107:13 -
Nonstop3h 00m
Fri 27/1109:15 -
Nonstop3h 13m
Deal found 28/9£157
Wed 21/1007:30 -
Nonstop2h 55m
Mon 26/1018:00 -
Nonstop3h 05m
Deal found 29/9£160
Last-minute flights from Seattle to San Diego
Discover last-minute flight deals from Seattle to San Diego. Data last updated 29 September 2026 and is based on user searches.
Wed 21/1020:35 -
Nonstop2h 51m
Mon 26/1020:28 -
Nonstop3h 09m
Deal found 29/9£115
Wed 21/1005:50 -
2 stops5h 45m
Mon 26/1007:25 -
Nonstop3h 05m
Deal found 29/9£130
Thu 22/1007:40 -
Nonstop2h 55m
Thu 29/1007:25 -
Nonstop3h 05m
Deal found 28/9£119
Thu 22/1020:07 -
Nonstop2h 51m
Thu 29/1017:20 -
Nonstop3h 06m
Deal found 28/9£141
Sat 24/1016:54 -
Nonstop2h 49m
Sat 31/1006:15 -
Nonstop3h 13m
Deal found 25/9£113
Sat 24/1014:15 -
1 stop4h 55m
Sat 31/1016:35 -
Nonstop3h 05m
Deal found 25/9£126
Tue 27/1019:59 -
Nonstop2h 52m
Sat 31/1015:59 -
Nonstop3h 06m
Deal found 27/9£119
Wed 28/1007:30 -
Nonstop2h 55m
Wed 4/1117:00 -
1 stop4h 40m
Deal found 29/9£123
Fri 30/1017:10 -
Nonstop2h 50m
Tue 3/1117:00 -
1 stop4h 35m
Deal found 28/9£142
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 29 September 2026.
Tue 20/1018:40 -
Nonstop2h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£60
Mon 9/1106:30 -
1 stop4h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£63
Thu 22/1015:55 -
1 stop5h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£67
Sun 1/1107:55 -
Nonstop2h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£79
Tue 10/1111:43 -
Nonstop3h 04m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£82
Fri 30/1015:55 -
1 stop5h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£86
Sat 24/1010:44 -
2 stops9h 24m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£94
Tue 3/1108:33 -
1 stop6h 43m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£96
Thu 24/1207:15 -
Nonstop3h 01m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£97
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 29 September 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 7,457,451 searches. Data last updated 29 September 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
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Tue 20/10
18:40-21:35
Nonstop2h 55m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£60
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Thu 29/10
07:40-10:35
Nonstop2h 55m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£60
Fastest return journey
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Thu 12/11
07:55-10:40
Nonstop2h 45m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£60
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Thu 3/12
18:30-21:20
Nonstop2h 50m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£60
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Mon 19/10
18:50-00:15
1 stop5h 25m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£67
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Wed 6/1
08:50-13:25
1 stop4h 35m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£67
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Wed 11/11
05:15-11:45
2 stops6h 30m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£71
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Thu 10/12
05:15-11:45
2 stops6h 30m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£71
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Tue 5/1
13:45-16:36
Nonstop2h 51m
San Diego
Wed 31/12
00:00-00:00
Nonstop0h 00m
£82
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Sat 23/1
11:05-15:25
1 stop4h 20m
San Diego
Tue 26/1
16:30-19:35
Nonstop3h 05m
£126
Flights are sorted by cheapest return flights first.
Deals found on 29/9
Showing 1-10 of 18 resultsSorted by cheapest first
1
2
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 £146). Flying from Seattle to San Diego in December is currently the most expensive (average of £252). 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 29 September 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 £135 and £310 in October.The cheapest return price found within the last 5 days was £113 on Alaska Airlines (24 Oct–31 Oct).
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 29 September 2026.
The most flights from SEA to SAN are scheduled on a Monday (44 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
How often are flights from Seattle to San Diego delayed?
About 18% of weekly flights between Seattle and San Diego have experienced delays in the past year, with the average delay time being 120 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 14% 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 29 September 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 50m on average. When it comes time to book airfare, you have a few options: there are 18 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 1 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 4h 20m. Seattle and San Diego are separated by a distance of 1051 mi.
What is the cheapest airline to fly from Seattle to San Diego round-trip?
Currently priced at £171, 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. Delta is 18% cheaper than the average price of flights available within the next 90 days to this destination.
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 (83%), British Airways (80%) or Qatar Airways (78%) as they are the most reliable in getting you off to your destination on time.
Can I find deals for flights from Seattle to San Diego that include hotel bookings?
Yes. In addition to deals on Seattle to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to San Diego?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Diego.
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 £146). Flying from Seattle to San Diego in December is currently the most expensive (average of £252). 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.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 29 September 2026.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 September 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 7,457,451 searches. Data last updated 29 September 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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