$81+ Cheap flights from Seattle to San Diego (SEA - SAN)
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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Mar 17 — Mar 241
1 adult, Economy
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Find cheap flights from Seattle to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 Wednesday or Tuesday and return on a Thursday
Cheap flight deals from Seattle to San Diego
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Best
Last-minute
One-way
Cheapest flights from Seattle to San DiegoExplore 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 February 15, 2026.
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 February 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Thu 4/3012:36 pm
SAN
- SEA
1 stop26h 29m
Frontier
Deal found 2/14![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop11h 44m
Frontier
Tue 3/103:16 pm
SAN
- SEA
1 stop5h 47m
Frontier
Deal found 2/12![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:56 pm
SEA
- SAN
1 stop11h 25m
Frontier
Wed 4/2210:00 am
SAN
- SEA
1 stop23h 27m
Frontier
Deal found 2/15![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/72:50 pm
SEA
- SAN
Nonstop2h 40m
Southwest
Mon 3/95:55 pm
SAN
- SEA
1 stop5h 55m
Southwest
Deal found 2/13![Southwest logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:36 pm
SEA
- SAN
1 stop15h 37m
Frontier
Thu 3/269:59 pm
SAN
- SEA
1 stop19h 40m
Frontier
Deal found 2/13![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/510:25 pm
SEA
- SAN
1 stop8h 56m
Frontier
Tue 4/1411:42 am
SAN
- SEA
1 stop21h 45m
Frontier
Deal found 2/14![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/279:36 pm
SEA
- SAN
1 stop15h 37m
Frontier
Wed 4/112:00 pm
SAN
- SEA
1 stop23h 37m
Frontier
Deal found 2/12![Frontier logo]()
$131
This Southwest deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Wed 5/64:30 pm
SAN
- SEA
2 stops7h 25m
Southwest
Deal found 2/13![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Tue 4/2812:29 pm
SAN
- SEA
2 stops20h 58m
Frontier
Deal found 2/14![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:56 pm
SEA
- SAN
1 stop11h 25m
Frontier
Thu 4/166:33 pm
SAN
- SEA
1 stop22h 08m
Frontier
Deal found 2/15![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Fri 5/16:25 am
SAN
- SEA
1 stop8h 40m
Frontier
Deal found 2/14![Frontier logo]()
$138
Best flights from Seattle to San DiegoDiscover carefully curated flight deals from Seattle to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 15, 2026.
Discover carefully curated flight deals from Seattle to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 15, 2026.
This Southwest deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:05 am
SEA
- SAN
Nonstop2h 45m
Southwest
Thu 4/304:20 pm
SAN
- SEA
1 stop6h 45m
Southwest
Deal found 2/15![Southwest logo]()
$127
This Alaska Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:10 pm
SEA
- SAN
Nonstop2h 48m
Alaska Airlines
Wed 4/226:34 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$137
This Delta deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/109:55 am
SEA
- SAN
Nonstop2h 53m
Delta
Thu 3/127:30 am
SAN
- SEA
Nonstop3h 08m
Delta
Deal found 2/12![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/102:35 pm
SEA
- SAN
Nonstop2h 40m
Southwest
Tue 3/107:00 pm
SAN
- SEA
1 stop5h 40m
Southwest
Deal found 2/14![Southwest logo]()
$127
This Southwest deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/119:25 am
SEA
- SAN
1 stop5h 05m
Southwest
Sat 3/143:10 pm
SAN
- SEA
1 stop7h 30m
Southwest
Deal found 2/12![Southwest logo]()
$137
This Delta deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:55 pm
SEA
- SAN
Nonstop2h 53m
Delta
Thu 4/97:30 am
SAN
- SEA
Nonstop3h 10m
Delta
Deal found 2/13![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:15 pm
SEA
- SAN
1 stop4h 50m
Southwest
Mon 4/206:00 pm
SAN
- SEA
1 stop4h 30m
Southwest
Deal found 2/14![Southwest logo]()
$137
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1710:15 pm
SEA
- SAN
1 stop9h 20m
Southwest
Wed 5/2012:45 pm
SAN
- SEA
1 stop7h 35m
Southwest
Deal found 2/14![Southwest logo]()
$142
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/93:30 pm
SEA
- SAN
Nonstop2h 49m
Delta
Mon 3/167:30 am
SAN
- SEA
Nonstop3h 10m
Delta
Deal found 2/11![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:20 pm
SEA
- SAN
1 stop6h 50m
Southwest
Tue 4/216:25 am
SAN
- SEA
2 stops7h 00m
Southwest
Deal found 2/12![Southwest logo]()
$142
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/79:50 am
SEA
- SAN
1 stop8h 55m
Southwest
Tue 4/74:30 pm
SAN
- SEA
2 stops7h 25m
Southwest
Deal found 2/14![Southwest logo]()
$148
Last-minute flights from Seattle to San DiegoDiscover last-minute flight deals from Seattle to San Diego. Data last updated February 15, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Diego. Data last updated February 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Thu 4/3012:36 pm
SAN
- SEA
1 stop26h 29m
Frontier
Deal found 2/14![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop11h 44m
Frontier
Tue 3/103:16 pm
SAN
- SEA
1 stop5h 47m
Frontier
Deal found 2/12![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Tue 4/2812:29 pm
SAN
- SEA
2 stops20h 58m
Frontier
Deal found 2/14![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Fri 5/16:25 am
SAN
- SEA
1 stop8h 40m
Frontier
Deal found 2/14![Frontier logo]()
$138
This Southwest deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/72:50 pm
SEA
- SAN
Nonstop2h 40m
Southwest
Mon 3/95:55 pm
SAN
- SEA
1 stop5h 55m
Southwest
Deal found 2/13![Southwest logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/89:35 pm
SEA
- SAN
1 stop18h 38m
Frontier
Tue 4/2811:42 am
SAN
- SEA
1 stop21h 45m
Frontier
Deal found 2/14![Frontier logo]()
$144
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/119:00 am
SEA
- SAN
2 stops8h 40m
Southwest
Tue 3/1710:45 am
SAN
- SEA
Nonstop3h 05m
Southwest
Deal found 2/14![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:36 pm
SEA
- SAN
1 stop15h 37m
Frontier
Thu 3/269:59 pm
SAN
- SEA
1 stop19h 40m
Frontier
Deal found 2/13![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2210:08 pm
SEA
- SAN
1 stop23h 20m
Frontier
Thu 3/269:59 pm
SAN
- SEA
1 stop19h 40m
Frontier
Deal found 2/13![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/279:36 pm
SEA
- SAN
1 stop15h 37m
Frontier
Wed 4/112:00 pm
SAN
- SEA
1 stop23h 37m
Frontier
Deal found 2/12![Frontier logo]()
$131
One-way flights from Seattle to San DiegoSearch for one-way flight options from Seattle to San Diego. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
Search for one-way flight options from Seattle to San Diego. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:57 pm
SEA
- SAN
1 stop28h 09m
Frontier
Deal found 2/15![Frontier logo]()
$81
This Southwest deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/252:35 pm
SEA
- SAN
Nonstop2h 40m
Southwest
Deal found 2/11![Southwest logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:57 pm
SEA
- SAN
1 stop25h 07m
Frontier
Deal found 2/11![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:06 am
SEA
- SAN
1 stop13h 41m
Frontier
Deal found 2/11![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:42 am
SEA
- SAN
2 stops12h 24m
Frontier
Deal found 2/12![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/299:35 pm
SEA
- SAN
1 stop18h 38m
Frontier
Deal found 2/13![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/281:51 pm
SEA
- SAN
1 stop6h 02m
Frontier
Deal found 2/14![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1310:42 am
SEA
- SAN
2 stops12h 24m
Frontier
Deal found 2/11![Frontier logo]()
$91
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:15 am
SEA
- SAN
1 stop7h 34m
United Airlines
Deal found 2/11![United Airlines logo]()
$93
This United Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:42 am
SEA
- SAN
2 stops11h 30m
United Airlines
Deal found 2/13![United Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/179:35 pm
SEA
- SAN
1 stop20h 05m
Frontier
Deal found 2/11![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/89:35 pm
SEA
- SAN
1 stop18h 38m
Frontier
Deal found 2/12![Frontier logo]()
$96
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 February 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $120 (Kiwi.com) |
One-way from | $81 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $277 |
Good round-trip deal | $177 or less |
Good one-way deal | $108 or less |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated February 15, 2026.
Use the filters below to find and compare flights from Seattle to San Diego that are best for you.
Fly from
Seattle
Fly to
San Diego
Route
Depart
Return
Price
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Fri 4/17
11:05 am-1:50 pm
Nonstop2h 45m
San Diego
Thu 4/30
4:20 pm-11:05 pm
1 stop6h 45m
$127
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 3/10
2:35 pm-5:15 pm
Nonstop2h 40m
San Diego
Tue 3/10
7:00 pm-12:40 am
1 stop5h 40m
$127
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 4/13
9:10 pm-11:58 pm
Nonstop2h 48m
San Diego
Wed 4/22
6:34 pm-9:45 pm
Nonstop3h 11m
$137
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 3/11
9:25 am-2:30 pm
1 stop5h 05m
San Diego
Sat 3/14
3:10 pm-10:40 pm
1 stop7h 30m
$137
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Fri 4/17
6:15 pm-11:05 pm
1 stop4h 50m
San Diego
Mon 4/20
6:00 pm-10:30 pm
1 stop4h 30m
$137
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sun 5/17
10:15 pm-7:35 am
1 stop9h 20m
San Diego
Wed 5/20
12:45 pm-8:20 pm
1 stop7h 35m
$142
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 4/18
1:20 pm-8:10 pm
1 stop6h 50m
San Diego
Tue 4/21
6:25 am-1:25 pm
2 stops7h 00m
$142
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 3/7
9:50 am-6:45 pm
1 stop8h 55m
San Diego
Tue 4/7
4:30 pm-11:55 pm
2 stops7h 25m
$148
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 3/10
9:55 am-12:48 pm
Nonstop2h 53m
San Diego
Thu 3/12
7:30 am-10:38 am
Nonstop3h 08m
$157
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 4/7
7:55 pm-10:48 pm
Nonstop2h 53m
San Diego
Thu 4/9
7:30 am-10:40 am
Nonstop3h 10m
$157
Showing 1-10 of 22 results
Compare providers for flights from Seattle to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to San Diego in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 round-trip 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?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to San Diego. Price data was last updated on February 13, 2026.
To ensure you get the cheapest price possible for a flight from Seattle to San Diego, you should look to book at least 41 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Seattle to San Diego?
Currently, June is the cheapest month in which you can book a flight from Seattle to San Diego (average of $55). Flying from Seattle to San Diego in July is currently the most expensive (average of $121). 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 February 15, 2026.
It’s optimal to fly from Seattle to San Diego in the morning. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the afternoon.
What is the cheapest day to fly from Seattle to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Seattle to San Diego. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their Seattle to San Diego flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 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 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 last year, Delta have had the lowest number of delays on this route, with just 13% of flights being delayed.
The best insider tips for Seattle to San Diego flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to San Diego trip
Our travel experts
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 February 15, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Seattle to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
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Seattle and San Diego flights
Browse other Seattle and San Diego flight options. Last updated on February 15, 2026.
Other flights from Seattle
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Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 15, 2026.
Top 7 airlines flying from Seattle to San Diego
Discover the top 7 airlines 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 2,558,603 searches. Data last updated February 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$152 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$88 | Average$210 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$266 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$119 | Average$258 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$304 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$156 | Average$274 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$246 | Average$397 | FlexibilityNo cancel fee | On-time71% |