$88+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
apr. 19 — apr. 261
Round-trip
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
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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 February or January, booked 84 days in advance, depart on a Thursday or Friday and return on a Tuesday
Cheap flight deals from San Diego to Seattle
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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 mars 20, 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 mars 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
ma. 4/139:28 pm
SAN
- SEA
1 stop11h 59m
Frontier
on. 4/158:07 pm
SEA
- SAN
1 stop12h 27m
Frontier
Deal found 3/16![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
ti. 5/59:37 am
SAN
- SEA
1 stop24h 12m
Frontier
lø. 5/96:52 pm
SEA
- SAN
1 stop13h 50m
Frontier
Deal found 3/16![Frontier logo]()
$126
This KAYAK deal was found by Cheapflights users on 3/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 4/147:00 pm
SAN
- SEA
1 stop13h 40m
Southwest
on. 4/1512:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Deal found 3/19![Southwest logo]()
$127
This Trip.com deal was found by Cheapflights users on 3/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fr. 5/17:35 pm
SAN
- SEA
Nonstop3h 18m
Alaska Airlines
fr. 5/82:41 pm
SEA
- SAN
Nonstop2h 57m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$135
This Delta deal was found by Cheapflights users on 3/16. 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.
fr. 5/13:35 pm
SAN
- SEA
Nonstop3h 14m
Delta
fr. 5/83:20 pm
SEA
- SAN
Nonstop2h 47m
Delta
Deal found 3/16![Delta logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
ti. 4/1412:12 pm
SAN
- SEA
1 stop21h 15m
Frontier
ti. 4/217:12 pm
SEA
- SAN
1 stop27h 54m
Frontier
Deal found 3/17![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
on. 4/2910:30 am
SAN
- SEA
1 stop22h 57m
Frontier
fr. 5/14:20 pm
SEA
- SAN
1 stop7h 39m
Frontier
Deal found 3/16![Frontier logo]()
$141
This Southwest deal was found by Cheapflights users on 3/16. 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.
ti. 5/53:00 pm
SAN
- SEA
Nonstop3h 00m
Southwest
to. 5/79:40 am
SEA
- SAN
1 stop4h 15m
Southwest
Deal found 3/16![Southwest logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
ma. 4/68:54 pm
SAN
- SEA
1 stop19h 20m
Frontier
ma. 4/1310:09 pm
SEA
- SAN
1 stop13h 25m
Frontier
Deal found 3/17![Frontier logo]()
$146
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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.
ti. 5/57:24 pm
SAN
- SEA
1 stop10h 47m
Alaska Airlines
on. 5/69:07 am
SEA
- SAN
Nonstop2h 57m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$147
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 mars 20, 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 mars 20, 2026.
This Delta deal was found by Cheapflights users on 3/18. 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.
on. 4/2211:40 am
SAN
- SEA
Nonstop3h 10m
Delta
lø. 5/211:45 am
SEA
- SAN
Nonstop2h 53m
Delta
Deal found 3/18![Delta logo]()
$139
This KAYAK deal was found by Cheapflights users on 3/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 4/148:15 am
SAN
- SEA
1 stop14h 40m
Southwest
on. 4/156:30 am
SEA
- SAN
2 stops11h 15m
Southwest
Deal found 3/19![Southwest logo]()
$142
This United Airlines deal was found by Cheapflights users on 3/19. 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.
lø. 5/161:35 pm
SAN
- SEA
1 stop4h 57m
United Airlines
ma. 5/186:37 pm
SEA
- SAN
1 stop5h 22m
United Airlines
Deal found 3/19![United Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 3/16. 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.
to. 4/166:51 pm
SAN
- SEA
Nonstop3h 14m
Delta
sø. 4/197:35 am
SEA
- SAN
Nonstop2h 59m
Delta
Deal found 3/16![Delta logo]()
$139
This Delta deal was found by Cheapflights users on 3/17. 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.
fr. 5/11:40 pm
SAN
- SEA
Nonstop3h 10m
Delta
ma. 5/47:35 am
SEA
- SAN
Nonstop2h 59m
Delta
Deal found 3/17![Delta logo]()
$139
This Southwest deal was found by Cheapflights users on 3/15. 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.
on. 5/64:30 pm
SAN
- SEA
2 stops7h 25m
Southwest
on. 5/1312:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Deal found 3/15![Southwest logo]()
$154
This Delta deal was found by Cheapflights users on 3/18. 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.
fr. 5/83:45 pm
SAN
- SEA
Nonstop3h 16m
Delta
sø. 5/177:15 am
SEA
- SAN
Nonstop2h 50m
Delta
Deal found 3/18![Delta logo]()
$139
This Southwest deal was found by Cheapflights users on 3/15. 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.
to. 5/145:55 pm
SAN
- SEA
1 stop7h 00m
Southwest
ti. 5/196:50 am
SEA
- SAN
1 stop7h 30m
Southwest
Deal found 3/15![Southwest logo]()
$159
This Southwest deal was found by Cheapflights users on 3/18. 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.
to. 4/302:15 pm
SAN
- SEA
Nonstop3h 05m
Southwest
ti. 5/58:25 am
SEA
- SAN
1 stop7h 20m
Southwest
Deal found 3/18![Southwest logo]()
$188
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 4/97:30 am
SAN
- SEA
Nonstop3h 10m
Delta
ma. 4/137:35 pm
SEA
- SAN
Nonstop2h 54m
Delta
Deal found 3/15![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 3/16. 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.
ma. 4/275:25 pm
SAN
- SEA
1 stop5h 10m
Southwest
ti. 4/289:20 am
SEA
- SAN
2 stops8h 25m
Southwest
Deal found 3/16![Southwest logo]()
$203
This Delta deal was found by Cheapflights users on 3/17. 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.
to. 5/213:45 pm
SAN
- SEA
Nonstop3h 16m
Delta
ma. 5/257:15 am
SEA
- SAN
Nonstop2h 50m
Delta
Deal found 3/17![Delta logo]()
$220
Last-minute flights from San Diego to SeattleDiscover last-minute flight deals from San Diego to Seattle. Data last updated mars 20, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Seattle. Data last updated mars 20, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
ma. 4/67:51 am
SAN
- SEA
1 stop12h 23m
Frontier
ma. 4/1310:09 pm
SEA
- SAN
1 stop13h 25m
Frontier
Deal found 3/16![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
ma. 4/139:28 pm
SAN
- SEA
1 stop11h 59m
Frontier
on. 4/158:07 pm
SEA
- SAN
1 stop12h 27m
Frontier
Deal found 3/16![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
ma. 4/139:28 pm
SAN
- SEA
1 stop11h 59m
Frontier
fr. 4/177:12 pm
SEA
- SAN
1 stop24h 52m
Frontier
Deal found 3/17![Frontier logo]()
$126
This KAYAK deal was found by Cheapflights users on 3/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 4/147:00 pm
SAN
- SEA
1 stop13h 40m
Southwest
on. 4/1512:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Deal found 3/19![Southwest logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
ti. 4/1412:12 pm
SAN
- SEA
1 stop21h 15m
Frontier
ti. 4/217:12 pm
SEA
- SAN
1 stop27h 54m
Frontier
Deal found 3/17![Frontier logo]()
$140
This Southwest deal was found by Cheapflights users on 3/16. 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.
on. 4/153:00 pm
SAN
- SEA
Nonstop3h 00m
Southwest
fr. 4/179:40 am
SEA
- SAN
1 stop4h 15m
Southwest
Deal found 3/16![Southwest logo]()
$145
This Delta deal was found by Cheapflights users on 3/16. 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.
to. 4/231:40 pm
SAN
- SEA
Nonstop3h 10m
Delta
sø. 4/262:50 pm
SEA
- SAN
Nonstop2h 44m
Delta
Deal found 3/16![Delta logo]()
$139
This Southwest deal was found by Cheapflights users on 3/16. 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.
to. 4/236:15 pm
SAN
- SEA
1 stop4h 20m
Southwest
ti. 4/2812:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Deal found 3/16![Southwest logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
on. 4/2910:30 am
SAN
- SEA
1 stop22h 57m
Frontier
fr. 5/14:20 pm
SEA
- SAN
1 stop7h 39m
Frontier
Deal found 3/16![Frontier logo]()
$141
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 mars 20, 2026.
Search for one-way flight options from San Diego to Seattle. Find affordable one-way fares based on user searches. Data last updated mars 20, 2026.
This United Airlines deal was found by Cheapflights users on 3/17. 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.
ti. 4/141:20 pm
SAN
- SEA
1 stop7h 37m
United Airlines
Deal found 3/17![United Airlines logo]()
$88
This Delta deal was found by Cheapflights users on 3/16. 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.
to. 5/141:37 pm
SAN
- SEA
Nonstop3h 07m
Delta
Deal found 3/16![Delta logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
on. 5/207:34 pm
SAN
- SEA
1 stop15h 02m
Frontier
Deal found 3/19![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
on. 5/67:34 pm
SAN
- SEA
1 stop14h 48m
Frontier
Deal found 3/17![Frontier logo]()
$92
This United Airlines deal was found by Cheapflights users on 3/17. 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.
on. 4/154:09 pm
SAN
- SEA
1 stop6h 47m
United Airlines
Deal found 3/17![United Airlines logo]()
$93
This United Airlines deal was found by Cheapflights users on 3/16. 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.
ti. 4/71:20 pm
SAN
- SEA
1 stop7h 37m
United Airlines
Deal found 3/16![United Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 3/18. 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.
ma. 4/206:51 pm
SAN
- SEA
2 stops38h 36m
Frontier
Deal found 3/18![Frontier logo]()
$95
This WAYA deal was found by Cheapflights users on 3/18. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 4/78:15 am
SAN
- SEA
1 stop7h 59m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$96
This CheapOair deal was found by Cheapflights users on 3/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 4/1411:27 am
SAN
- SEA
1 stop7h 36m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$99
This Frontier deal was found by Cheapflights users on 3/20. 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.
ma. 5/46:25 am
SAN
- SEA
1 stop8h 40m
Frontier
Deal found 3/20![Frontier logo]()
$100
This Delta deal was found by Cheapflights users on 3/17. 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.
ti. 4/1411:40 am
SAN
- SEA
Nonstop3h 10m
Delta
Deal found 3/17![Delta logo]()
$103
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 mars 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $123 (Kiwi.com) |
One-way from | $88 (United Airlines) |
Popular in | July |
Cheapest in | February |
Average price | $287 |
Good round-trip deal | $231 or less |
Good one-way deal | $185 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 mars 20, 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
Cheapest round-trip
Quickest round-trip
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
on. 4/22
11:40 am-2:50 pm
Nonstop3h 10m
Seattle/Tacoma Intl
lø. 5/2
11:45 am-2:38 pm
Nonstop2h 53m
$139
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
to. 4/16
6:51 pm-10:05 pm
Nonstop3h 14m
Seattle/Tacoma Intl
sø. 4/19
7:35 am-10:34 am
Nonstop2h 59m
$139
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
fr. 5/1
1:40 pm-4:50 pm
Nonstop3h 10m
Seattle/Tacoma Intl
ma. 5/4
7:35 am-10:34 am
Nonstop2h 59m
$139
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
fr. 5/8
3:45 pm-7:01 pm
Nonstop3h 16m
Seattle/Tacoma Intl
sø. 5/17
7:15 am-10:05 am
Nonstop2h 50m
$139
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
ti. 4/14
8:15 am-10:55 pm
1 stop14h 40m
Seattle/Tacoma Intl
on. 4/15
6:30 am-5:45 pm
2 stops11h 15m
$142
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
on. 5/6
4:30 pm-11:55 pm
2 stops7h 25m
Seattle/Tacoma Intl
on. 5/13
12:10 pm-3:05 pm
Nonstop2h 55m
$154
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
to. 5/14
5:55 pm-12:55 am
1 stop7h 00m
Seattle/Tacoma Intl
ti. 5/19
6:50 am-2:20 pm
1 stop7h 30m
$159
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
to. 4/30
2:15 pm-5:20 pm
Nonstop3h 05m
Seattle/Tacoma Intl
ti. 5/5
8:25 am-3:45 pm
1 stop7h 20m
$188
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
to. 4/9
7:30 am-10:40 am
Nonstop3h 10m
Seattle/Tacoma Intl
ma. 4/13
7:35 pm-10:29 pm
Nonstop2h 54m
$197
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
ma. 4/27
5:25 pm-10:35 pm
1 stop5h 10m
Seattle/Tacoma Intl
ti. 4/28
9:20 am-5:45 pm
2 stops8h 25m
$203
Showing 1-10 of 24 resultsSorted by cheapest first
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 March.
| 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 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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 March 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, January is the cheapest month in which you can book a flight from San Diego to Seattle (average of $64). 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 mars 20, 2026.
It’s typically best to fly out from San Diego to Seattle in the evening. Doing so could potentially save you 16% 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 March 14, 2026.
Travelers seeking maximum savings on their San Diego to Seattle flight should consider departing on Friday 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 mars 20, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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 locationsSeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Ellensburg
Tukwila
Fife
Lakewood
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
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San Diego and Seattle flights
Browse other San Diego and Seattle flight options. Last updated on mars 20, 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 mars 20, 2026.
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Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on mars 20, 2026.
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 mars 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$67 | Average$157 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$110 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$115 | Average$256 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$133 | Average$274 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$138 | Average$282 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$159 | Average$292 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$289 | Average$473 | FlexibilityNo cancel fee | On-time71% |