This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/12. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
12 Dec — 19 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Diego to Seattle/Tacoma Intl are usually found in January or February, booked 86 days in advance, depart on a Monday or Tuesday and return on a Tuesday
Cheap flight deals from San Diego to Seattle
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from San Diego to Seattle
Explore the most affordable flight options available from San Diego to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 November 2026.
Tue 1/1206:15 -
Nonstop3h 17m
Sat 12/1218:30 -
Nonstop2h 47m
Deal found 10/11£100
Tue 1/1217:05 -
1 stop4h 35m
Thu 10/1218:30 -
Nonstop2h 50m
Deal found 10/11£104
Sat 5/1218:43 -
Nonstop3h 14m
Sat 12/1207:20 -
1 stop5h 06m
Deal found 10/11£113
Tue 8/1206:15 -
Nonstop3h 17m
Tue 8/1212:18 -
Nonstop2h 52m
Deal found 10/11£114
Tue 8/1207:20 -
Nonstop3h 05m
Thu 17/1207:55 -
Nonstop2h 45m
Deal found 10/11£115
Sun 6/1207:20 -
Nonstop3h 18m
Thu 10/1209:55 -
Nonstop3h 01m
Deal found 10/11£118
Sat 5/1211:06 -
Nonstop3h 15m
Mon 4/111:45 -
Nonstop2h 53m
Deal found 11/11£119
Sat 12/1215:52 -
Nonstop3h 13m
Sat 2/118:00 -
Nonstop2h 56m
Deal found 10/11£122
Tue 1/1207:20 -
Nonstop3h 18m
Sun 13/1209:55 -
Nonstop3h 01m
Deal found 10/11£122
Best flights from San Diego to Seattle
Discover carefully curated flight deals from San Diego to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.
Tue 1/1217:45 -
Nonstop3h 10m
Sat 5/1215:05 -
Nonstop2h 40m
Deal found 9/11£119
Tue 15/1218:47 -
Nonstop3h 18m
Tue 22/1207:15 -
Nonstop3h 00m
Deal found 9/11£131
Tue 5/115:49 -
Nonstop3h 07m
Sun 10/116:29 -
Nonstop2h 47m
Deal found 11/11£156
Thu 10/1206:45 -
1 stop5h 25m
Thu 17/1207:30 -
1 stop4h 20m
Deal found 12/11£123
Wed 9/1217:05 -
1 stop4h 35m
Wed 16/1205:15 -
2 stops6h 30m
Deal found 8/11£135
Fri 18/1206:15 -
Nonstop3h 18m
Sun 3/106:00 -
Nonstop2h 49m
Deal found 10/11£183
Sat 12/1213:40 -
1 stop6h 30m
Sat 2/108:00 -
Nonstop2h 45m
Deal found 9/11£153
Tue 29/1207:36 -
Nonstop3h 19m
Thu 31/1211:52 -
Nonstop2h 56m
Deal found 11/11£190
Wed 2/1217:05 -
1 stop4h 35m
Mon 7/1205:15 -
2 stops6h 30m
Deal found 10/11£158
Sat 12/1212:10 -
1 stop6h 20m
Sun 20/1205:00 -
1 stop4h 20m
Deal found 8/11£168
Direct flights from San Diego to Seattle
Explore direct flight options from San Diego to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.
Tue 1/1206:15 -
Nonstop3h 17m
Sat 12/1218:30 -
Nonstop2h 47m
Deal found 10/11£100
Tue 8/1206:15 -
Nonstop3h 17m
Tue 8/1212:18 -
Nonstop2h 52m
Deal found 10/11£114
Tue 8/1207:20 -
Nonstop3h 05m
Thu 17/1207:55 -
Nonstop2h 45m
Deal found 10/11£115
Sun 6/1207:20 -
Nonstop3h 18m
Thu 10/1209:55 -
Nonstop3h 01m
Deal found 10/11£118
Sat 5/1211:06 -
Nonstop3h 15m
Mon 4/111:45 -
Nonstop2h 53m
Deal found 11/11£119
Tue 19/107:30 -
Nonstop3h 15m
Sat 30/109:59 -
Nonstop2h 54m
Deal found 9/11£119
Sat 12/1215:52 -
Nonstop3h 13m
Sat 2/118:00 -
Nonstop2h 56m
Deal found 10/11£122
Tue 1/1211:06 -
Nonstop3h 15m
Fri 4/1219:59 -
Nonstop2h 53m
Deal found 10/11£122
Sat 9/108:36 -
Nonstop3h 12m
Sat 9/114:53 -
Nonstop2h 46m
Deal found 10/11£123
Wed 2/1215:52 -
Nonstop3h 13m
Thu 3/1207:15 -
Nonstop2h 56m
Deal found 10/11£125
Last-minute flights from San Diego to Seattle
Discover last-minute flight deals from San Diego to Seattle. Data last updated 12 November 2026 and is based on user searches.
Tue 1/1206:15 -
Nonstop3h 17m
Sat 12/1218:30 -
Nonstop2h 47m
Deal found 10/11£100
Tue 1/1217:05 -
1 stop4h 35m
Thu 10/1218:30 -
Nonstop2h 50m
Deal found 10/11£104
Tue 1/1211:06 -
Nonstop3h 15m
Fri 4/1219:59 -
Nonstop2h 53m
Deal found 10/11£122
Sat 5/1207:12 -
1 stop4h 50m
Tue 8/1210:35 -
Nonstop2h 48m
Deal found 10/11£113
Sat 5/1211:06 -
Nonstop3h 15m
Mon 4/111:45 -
Nonstop2h 53m
Deal found 11/11£119
Sun 6/1207:20 -
Nonstop3h 18m
Sun 6/1215:00 -
Nonstop2h 50m
Deal found 9/11£118
Tue 8/1206:15 -
Nonstop3h 17m
Tue 8/1212:18 -
Nonstop2h 52m
Deal found 10/11£114
Tue 8/1207:20 -
Nonstop3h 05m
Thu 17/1207:55 -
Nonstop2h 45m
Deal found 10/11£115
Sat 12/1209:10 -
Nonstop3h 10m
Sat 2/108:00 -
Nonstop2h 45m
Deal found 10/11£122
One-way flights from San Diego to Seattle
Search for one-way flight options from San Diego to Seattle. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.
Wed 2/1213:51 -
Nonstop3h 12m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£59
Tue 8/1213:51 -
Nonstop3h 12m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/11£60
Fri 4/1207:20 -
Nonstop3h 18m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/11£63
Tue 8/1217:05 -
1 stop4h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/11£64
Tue 1/1217:05 -
1 stop4h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£68
Sun 6/1214:30 -
1 stop7h 28m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/11£71
Thu 10/1206:20 -
2 stops8h 03m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/11£74
Mon 14/1206:45 -
1 stop5h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/11£75
Sat 19/1218:45 -
Nonstop3h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£79
Fri 4/1206:20 -
2 stops8h 03m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£82
Find flight deals from San Diego to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Seattle (SEA). 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 12 November 2026.
Customise your flight search to find flights from San Diego to Seattle 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 12 November 2026.
Use the filters below to find and compare flights from San Diego to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Mon 14/12
18:47-22:05
Nonstop3h 18m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£59
Fastest return journey
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Wed 9/12
07:20-10:25
Nonstop3h 05m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£60
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Sat 5/12
16:05-19:10
Nonstop3h 05m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£60
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Wed 2/12
13:51-17:03
Nonstop3h 12m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£63
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Sat 27/2
17:50-00:40
1 stop6h 50m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£68
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Thu 3/12
07:15-10:27
Nonstop3h 12m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£71
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Wed 2/12
10:55-18:40
2 stops7h 45m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£71
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Wed 16/12
14:30-23:44
2 stops9h 14m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£75
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Wed 9/12
14:30-23:44
2 stops9h 14m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£83
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Thu 24/12
14:45-23:18
2 stops8h 33m
Seattle/Tacoma Intl
Wed 31/12
00:00-00:00
Nonstop0h 00m
£83
Flights are sorted by cheapest return flights first.
Deals found on 9/11
Showing 1-10 of 21 resultsSorted by cheapest first
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2
3
Best time to book a flight from San Diego to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from San Diego with our price prediction graph.
SAN-SEA
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 San Diego to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from San Diego to Seattle?
Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Diego to Seattle?
Currently, January is the cheapest month in which you can book a flight from San Diego to Seattle (average of £150). Flying from San Diego to Seattle in July is currently the most expensive (average of £245). 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 SAN to SEA?
Find hourly flight availability from San Diego to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 November 2026.
One of the essential ways to save on airfare from San Diego to Seattle is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.
How much does it cost for a return flight from San Diego to Seattle?
Airfare is below average for this route at the moment.
San Diego to Seattle flights typically cost between £139 and £293 in December.The cheapest return price found within the last 5 days was £100 on Alaska Airlines (1 Dec–12 Dec).
Weekly flight availability from San Diego to Seattle
Explore weekly flight availability from San Diego to Seattle. 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 12 November 2026.
The most flights from SAN to SEA are scheduled on a Wednesday (32 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).
How often are flights from San Diego to Seattle delayed?
About 11% of weekly flights between San Diego and Seattle have experienced delays in the past year, with the average delay time being 157 minutes.
What is the most punctual flight time for San Diego to Seattle flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night 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 Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Diego to Seattle flights?
Over the past year, Delta have had the lowest number of delays on this route, with just 8% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from San Diego to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How popular is this San Diego to Seattle flight route?
Within the past month, 2 users have taken a look at flights from San Diego to Seattle/Tacoma Intl.
How long is the flight from San Diego to Seattle?
For as low as £119, Southwest can have you in Seattle from San Diego in 3h 10m. The distance between San Diego and Seattle is about 1051 mi. All flights are typically direct.
What are the most reliable airlines from San Diego to Seattle?
The top 3 most reliable airlines when flying from San Diego to Seattle are Finnair (88%), Cathay Pacific (84%) and Air France (84%).
What are the cheapest flights from San Diego to Seattle?
While on average a flight from San Diego to Seattle is generally £2,044, our data shows the cheapest flight currently is £85. When looking at the most popular route, (San Diego - Seattle/Tacoma Intl), you can expect to pay £142 for that flight.
Can I find deals for business class flights from San Diego to Seattle?
Yes. Cheapflights offers flight deals from San Diego to Seattle 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 San Diego to Seattle?
Currently, January is the cheapest month in which you can book a flight from San Diego to Seattle (average of £150). Flying from San Diego to Seattle in July is currently the most expensive (average of £245). 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 San Diego. Flights are based on user searches made on Cheapflights and were last updated on 12 November 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 November 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 San Diego to Seattle?
Cheapflights makes it easy to find San Diego to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from San Diego to Seattle?
Millions of users choose and trust Cheapflights to book the best flight deals from San Diego to Seattle 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 San Diego to Seattle with no change fees?
Yes, we can. To see specific flights from San Diego to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from San Diego to Seattle become cheaper?
Of course! You can now track prices for flights from San Diego to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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