$80+ Cheap flights from San Diego to Seattle (SAN - SEA)
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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
Mar 17 — Mar 241
1 adult, Economy
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Find cheap flights from San Diego to Seattle 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 San Diego to Seattle/Tacoma Intl are usually found in January or October, booked 84 days in advance, depart on a Thursday or Friday and return on a Wednesday
Cheap flight deals from San Diego to Seattle
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Best
Last-minute
One-way
Cheapest flights from San Diego to SeattleExplore 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 February 15, 2026.
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 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.
Wed 4/2210:00 am
SAN
- SEA
1 stop23h 27m
Frontier
Sat 4/256:57 pm
SEA
- SAN
1 stop13h 37m
Frontier
Deal found 2/15![Frontier logo]()
$120
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 4/276:25 am
SAN
- SEA
1 stop27h 02m
Frontier
Sat 5/96:57 pm
SEA
- SAN
1 stop29h 04m
Frontier
Deal found 2/13![Frontier logo]()
$123
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 3/712:00 pm
SAN
- SEA
1 stop7h 15m
Southwest
Sun 3/82:35 pm
SEA
- SAN
Nonstop2h 40m
Southwest
Deal found 2/14![Southwest logo]()
$127
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 4/246:25 am
SAN
- SEA
1 stop8h 40m
Frontier
Sun 4/266:57 pm
SEA
- SAN
1 stop13h 37m
Frontier
Deal found 2/12![Frontier logo]()
$128
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.
Sat 3/711:05 am
SAN
- SEA
Nonstop3h 05m
Southwest
Wed 3/119:00 am
SEA
- SAN
2 stops8h 40m
Southwest
Deal found 2/15![Southwest logo]()
$132
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 5/53:00 pm
SAN
- SEA
Nonstop3h 00m
Southwest
Sun 5/1710:15 pm
SEA
- SAN
1 stop9h 20m
Southwest
Deal found 2/14![Southwest logo]()
$133
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.
Tue 4/2811:42 am
SAN
- SEA
1 stop21h 45m
Frontier
Wed 5/610:42 am
SEA
- SAN
2 stops12h 24m
Frontier
Deal found 2/13![Frontier logo]()
$134
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 4/112:00 pm
SAN
- SEA
1 stop23h 37m
Frontier
Sun 4/510:25 pm
SEA
- SAN
1 stop8h 56m
Frontier
Deal found 2/12![Frontier logo]()
$135
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.
Fri 3/137:30 pm
SAN
- SEA
1 stop6h 10m
Southwest
Mon 3/166:45 am
SEA
- SAN
1 stop7h 10m
Southwest
Deal found 2/13![Southwest logo]()
$137
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.
Mon 4/139:28 pm
SAN
- SEA
1 stop11h 59m
Frontier
Thu 4/164:20 pm
SEA
- SAN
1 stop7h 41m
Frontier
Deal found 2/14![Frontier logo]()
$138
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.
Tue 3/173:16 pm
SAN
- SEA
2 stops49h 53m
Frontier
Thu 3/2612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Deal found 2/14![Frontier logo]()
$139
Best flights from San Diego to SeattleDiscover carefully curated flight deals from San Diego to Seattle 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 San Diego to Seattle 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 2/13. 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 4/252:55 pm
SAN
- SEA
Nonstop3h 00m
Southwest
Mon 4/275:00 am
SEA
- SAN
1 stop4h 00m
Southwest
Deal found 2/13![Southwest logo]()
$127
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:26 pm
SAN
- SEA
Nonstop3h 14m
Alaska Airlines
Fri 3/209:10 pm
SEA
- SAN
Nonstop2h 48m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$137
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.
Tue 5/56:25 am
SAN
- SEA
2 stops7h 00m
Southwest
Fri 5/811:05 am
SEA
- SAN
Nonstop2h 45m
Southwest
Deal found 2/13![Southwest logo]()
$132
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 3/73:15 pm
SAN
- SEA
2 stops7h 40m
Southwest
Sun 3/82:35 pm
SEA
- SAN
Nonstop2h 40m
Southwest
Deal found 2/14![Southwest logo]()
$132
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 3/77:50 pm
SAN
- SEA
1 stop5h 35m
Southwest
Tue 3/1011:00 am
SEA
- SAN
1 stop7h 40m
Southwest
Deal found 2/12![Southwest logo]()
$137
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
SAN
- SEA
Nonstop3h 12m
Alaska Airlines
Thu 4/169:11 pm
SEA
- SAN
Nonstop2h 48m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$167
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 3/137:30 pm
SAN
- SEA
1 stop6h 10m
Southwest
Mon 3/166:45 am
SEA
- SAN
1 stop7h 10m
Southwest
Deal found 2/14![Southwest logo]()
$137
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:38 am
SAN
- SEA
1 stop5h 11m
Alaska Airlines
Mon 5/187:00 am
SEA
- SAN
Nonstop2h 56m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$177
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.
Wed 4/11:50 pm
SAN
- SEA
1 stop5h 45m
Southwest
Wed 4/89:20 am
SEA
- SAN
2 stops8h 25m
Southwest
Deal found 2/15![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.
Fri 3/137:30 pm
SAN
- SEA
1 stop6h 10m
Southwest
Tue 3/179:00 am
SEA
- SAN
2 stops8h 40m
Southwest
Deal found 2/14![Southwest logo]()
$142
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 3/1110:45 am
SAN
- SEA
Nonstop3h 05m
Southwest
Wed 3/189:25 am
SEA
- SAN
1 stop6h 25m
Southwest
Deal found 2/11![Southwest logo]()
$175
Last-minute flights from San Diego to SeattleDiscover last-minute flight deals from San Diego to Seattle. Data last updated February 15, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Seattle. Data last updated February 15, 2026 and is based on user searches.
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 2/257:11 am
SAN
- SEA
1 stop28h 50m
Frontier
Tue 3/1010:08 pm
SEA
- SAN
1 stop16h 23m
Frontier
Deal found 2/12![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.
Wed 3/48:45 am
SAN
- SEA
1 stop27h 16m
Frontier
Mon 3/169:36 pm
SEA
- SAN
1 stop15h 37m
Frontier
Deal found 2/12![Frontier logo]()
$123
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 3/712:00 pm
SAN
- SEA
1 stop7h 15m
Southwest
Sun 3/82:35 pm
SEA
- SAN
Nonstop2h 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.
Sat 3/73:15 pm
SAN
- SEA
2 stops7h 40m
Southwest
Tue 3/107:30 am
SEA
- SAN
1 stop6h 45m
Southwest
Deal found 2/12![Southwest logo]()
$142
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:26 pm
SAN
- SEA
Nonstop3h 13m
Hawaiian Airlines
Sun 3/158:11 pm
SEA
- SAN
Nonstop2h 52m
Hawaiian Airlines
Deal found 2/13![Hawaiian Airlines logo]()
$146
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.
Fri 3/137:30 pm
SAN
- SEA
1 stop6h 10m
Southwest
Mon 3/166:45 am
SEA
- SAN
1 stop7h 10m
Southwest
Deal found 2/13![Southwest logo]()
$137
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.
Fri 3/138:26 pm
SAN
- SEA
Nonstop3h 14m
Hawaiian Airlines
Mon 3/162:43 pm
SEA
- SAN
1 stop5h 29m
Hawaiian Airlines
Deal found 2/13![Hawaiian Airlines logo]()
$141
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.
Tue 3/173:16 pm
SAN
- SEA
2 stops49h 53m
Frontier
Thu 3/2612:24 pm
SEA
- SAN
1 stop8h 09m
Frontier
Deal found 2/14![Frontier logo]()
$139
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.
Tue 3/242:50 pm
SAN
- SEA
1 stop6h 13m
Frontier
Fri 3/279:36 pm
SEA
- SAN
1 stop15h 37m
Frontier
Deal found 2/11![Frontier logo]()
$145
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 3/252:50 pm
SAN
- SEA
1 stop6h 13m
Frontier
Sun 3/2910:08 pm
SEA
- SAN
1 stop17h 36m
Frontier
Deal found 2/12![Frontier logo]()
$148
One-way flights from San Diego to SeattleSearch for one-way flight options from San Diego to Seattle. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
Search for one-way flight options from San Diego to Seattle. 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 2/14. 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.
Mon 4/273:20 pm
SAN
- SEA
2 stops42h 07m
Frontier
Deal found 2/14![Frontier logo]()
$80
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 4/139:28 pm
SAN
- SEA
1 stop11h 59m
Frontier
Deal found 2/11![Frontier logo]()
$81
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 3/26:30 am
SAN
- SEA
1 stop13h 29m
Frontier
Deal found 2/11![Frontier logo]()
$83
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.
Thu 5/1412:36 pm
SAN
- SEA
1 stop20h 51m
Frontier
Deal found 2/13![Frontier logo]()
$84
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.
Tue 3/313:31 pm
SAN
- SEA
2 stops44h 06m
Frontier
Deal found 2/14![Frontier logo]()
$86
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.
Tue 4/71:20 pm
SAN
- SEA
1 stop7h 37m
United Airlines
Deal found 2/11![United Airlines logo]()
$88
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 4/196:33 pm
SAN
- SEA
1 stop22h 08m
Frontier
Deal found 2/14![Frontier logo]()
$89
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:25 am
SAN
- SEA
1 stop8h 40m
Frontier
Deal found 2/13![Frontier logo]()
$90
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.
Sat 4/253:20 pm
SAN
- SEA
2 stops18h 07m
Frontier
Deal found 2/14![Frontier logo]()
$91
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.
Wed 4/12:49 pm
SAN
- SEA
2 stops25h 55m
Frontier
Deal found 2/13![Frontier 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.
Wed 3/186:15 am
SAN
- SEA
2 stops9h 59m
United Airlines
Deal found 2/13![United Airlines logo]()
$94
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/278:35 am
SAN
- SEA
1 stop27h 26m
Frontier
Deal found 2/12![Frontier logo]()
$95
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 February 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $123 (Kiwi.com) |
One-way from | $80 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $217 |
Good round-trip deal | $229 or less |
Good one-way deal | $155 or less |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated February 15, 2026.
Use the filters below to find and compare flights from San Diego to Seattle that are best for you.
Fly from
San Diego
Fly to
Seattle
Route
Depart
Return
Price
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Sat 4/25
2:55 pm-5:55 pm
Nonstop3h 00m
Seattle/Tacoma Intl
Mon 4/27
5:00 am-9:00 am
1 stop4h 00m
$127
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Tue 5/5
6:25 am-1:25 pm
2 stops7h 00m
Seattle/Tacoma Intl
Fri 5/8
11:05 am-1:50 pm
Nonstop2h 45m
$132
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Sat 3/7
3:15 pm-10:55 pm
2 stops7h 40m
Seattle/Tacoma Intl
Sun 3/8
2:35 pm-5:15 pm
Nonstop2h 40m
$132
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 3/6
8:26 pm-11:40 pm
Nonstop3h 14m
Seattle/Tacoma Intl
Fri 3/20
9:10 pm-11:58 pm
Nonstop2h 48m
$137
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Sat 3/7
7:50 pm-1:25 am
1 stop5h 35m
Seattle/Tacoma Intl
Tue 3/10
11:00 am-6:40 pm
1 stop7h 40m
$137
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 3/13
7:30 pm-1:40 am
1 stop6h 10m
Seattle/Tacoma Intl
Mon 3/16
6:45 am-1:55 pm
1 stop7h 10m
$137
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Wed 4/1
1:50 pm-7:35 pm
1 stop5h 45m
Seattle/Tacoma Intl
Wed 4/8
9:20 am-5:45 pm
2 stops8h 25m
$142
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 3/13
7:30 pm-1:40 am
1 stop6h 10m
Seattle/Tacoma Intl
Tue 3/17
9:00 am-5:40 pm
2 stops8h 40m
$142
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Thu 4/9
6:15 am-9:27 am
Nonstop3h 12m
Seattle/Tacoma Intl
Thu 4/16
9:11 pm-11:59 pm
Nonstop2h 48m
$167
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Wed 3/11
10:45 am-1:50 pm
Nonstop3h 05m
Seattle/Tacoma Intl
Wed 3/18
9:25 am-3:50 pm
1 stop6h 25m
$175
Showing 1-10 of 19 results
Compare providers for flights from San Diego to Seattle
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 San Diego to Seattle in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Seattle 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 San Diego-Seattle 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 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 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 San Diego to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from San Diego to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from San Diego to Seattle. Price data was last updated on February 13, 2026.
The price you pay for your flight from San Diego to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Diego to Seattle?
Currently, February is the cheapest month in which you can book a flight from San Diego to Seattle (average of $60). Flying from San Diego to Seattle in July is currently the most expensive (average of $138). 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 February 15, 2026.
It’s typically best to fly out from San Diego to Seattle in the evening. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from San Diego to Seattle?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Seattle. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their San Diego to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Diego to Seattle delayed?
About 12% of weekly flights between San Diego and Seattle have experienced delays in the past year, with the average delay time being 149 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 last year, Delta have had the lowest number of delays on this route, with just 9% of flights being delayed.
The best insider tips for San Diego to Seattle 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 San Diego to Seattle trip
Our travel experts
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated February 15, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from San Diego to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Boarding
8.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsTacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Edmonds
Lacey
Kent
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis
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San Diego and Seattle flights
Browse other San Diego and Seattle flight options. Last updated on February 15, 2026.
Other flights from San Diego
Browse through other flights departing from San Diego. Flights are based on user searches made on Cheapflights and were last updated on February 15, 2026.
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Top 7 airlines flying from San Diego to Seattle
Discover the top 7 airlines that operate flights from San Diego to Seattle. 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$79 | Average$155 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$103 | Average$193 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$119 | Average$254 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$128 | Average$278 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$139 | Average$274 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$166 | Average$292 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$289 | Average$457 | FlexibilityNo cancel fee | On-time71% |