$104+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
May 23 — May 301
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 72 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 April 23, 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 April 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/156:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Sat 5/237:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 4/22![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/116:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Tue 5/127:50 pm
SEA
- SAN
2 stops19h 41m
Frontier
Deal found 4/22![Frontier logo]()
$153
This Delta deal was found by Cheapflights users on 4/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:10 pm
SAN
- SEA
Nonstop3h 10m
Delta
Tue 6/3012:20 pm
SEA
- SAN
Nonstop2h 59m
Delta
Deal found 4/19![Delta logo]()
$165
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Tue 5/121:35 pm
SAN
- SEA
1 stop7h 31m
United Airlines
Tue 5/197:08 am
SEA
- SAN
1 stop4h 46m
United Airlines
Deal found 4/19![United Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/111:38 pm
SAN
- SEA
2 stops20h 11m
Frontier
Wed 5/137:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 4/22![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 6/41:38 pm
SAN
- SEA
2 stops28h 57m
Frontier
Mon 6/83:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 4/21![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/116:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Thu 5/147:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Deal found 4/21![Frontier logo]()
$179
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:27 pm
SAN
- SEA
1 stop6h 46m
United Airlines
Sun 6/75:00 am
SEA
- SAN
1 stop4h 59m
United Airlines
Deal found 4/20![United Airlines logo]()
$183
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:07 pm
SAN
- SEA
1 stop16h 22m
Alaska Airlines
Wed 6/31:30 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 6/56:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Mon 6/83:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 4/21![Frontier logo]()
$186
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 April 23, 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 April 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 6/210:15 pm
SAN
- SEA
1 stop10h 55m
Alaska Airlines
Sat 6/69:55 am
SEA
- SAN
1 stop6h 36m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$214
This Delta deal was found by Cheapflights users on 4/22. 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.
Wed 5/207:10 pm
SAN
- SEA
Nonstop3h 14m
Delta
Mon 5/257:15 am
SEA
- SAN
Nonstop2h 50m
Delta
Deal found 4/22![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 5/156:19 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Mon 5/183:02 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:04 pm
SAN
- SEA
Nonstop3h 14m
Alaska Airlines
Mon 6/17:35 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 4/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:00 am
SAN
- SEA
Nonstop3h 20m
Delta
Tue 5/127:15 am
SEA
- SAN
Nonstop2h 50m
Delta
Deal found 4/19![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 5/226:19 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Fri 5/297:35 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/282:14 pm
SAN
- SEA
1 stop4h 40m
Alaska Airlines
Mon 6/17:05 am
SEA
- SAN
1 stop6h 13m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 4/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:10 pm
SAN
- SEA
Nonstop3h 14m
Delta
Sun 5/109:45 am
SEA
- SAN
Nonstop2h 57m
Delta
Deal found 4/19![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:14 pm
SAN
- SEA
1 stop4h 40m
Alaska Airlines
Sun 5/319:09 pm
SEA
- SAN
Nonstop2h 50m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:45 pm
SAN
- SEA
1 stop4h 52m
Alaska Airlines
Sun 5/3111:59 am
SEA
- SAN
Nonstop3h 01m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$272
Last-minute flights from San Diego to SeattleDiscover last-minute flight deals from San Diego to Seattle. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Seattle. Data last updated April 23, 2026 and is based on user searches.
This eDestinos deal was found by Cheapflights users on 4/19. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Sat 5/237:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 4/19![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/116:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Tue 5/127:50 pm
SEA
- SAN
2 stops19h 41m
Frontier
Deal found 4/22![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/111:38 pm
SAN
- SEA
2 stops20h 11m
Frontier
Wed 5/137:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 4/22![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/116:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Thu 5/147:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Deal found 4/21![Frontier logo]()
$179
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Tue 5/121:35 pm
SAN
- SEA
1 stop7h 31m
United Airlines
Tue 5/197:08 am
SEA
- SAN
1 stop4h 46m
United Airlines
Deal found 4/19![United Airlines logo]()
$166
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Thu 5/146:05 pm
SAN
- SEA
2 stops7h 07m
United Airlines
Sun 5/175:00 am
SEA
- SAN
1 stop4h 58m
United Airlines
Deal found 4/19![United Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/156:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Sat 5/237:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 4/22![Frontier logo]()
$146
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/157:07 pm
SAN
- SEA
1 stop22h 16m
Alaska Airlines
Sat 5/167:35 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$190
This Delta deal was found by Cheapflights users on 4/18. 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.
Wed 5/203:45 pm
SAN
- SEA
Nonstop3h 16m
Delta
Sat 5/3011:45 am
SEA
- SAN
Nonstop3h 03m
Delta
Deal found 4/18![Delta logo]()
$191
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 5/289:30 am
SAN
- SEA
1 stop7h 53m
Alaska Airlines
Thu 5/289:09 pm
SEA
- SAN
Nonstop2h 50m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$184
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:27 pm
SAN
- SEA
1 stop6h 46m
United Airlines
Sun 6/75:00 am
SEA
- SAN
1 stop4h 59m
United Airlines
Deal found 4/20![United Airlines logo]()
$183
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 April 23, 2026.
Search for one-way flight options from San Diego to Seattle. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 7/46:25 am
SAN
- SEA
1 stop27h 23m
Frontier
Deal found 4/21![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 4/21. 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.
Tue 5/56:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Deal found 4/21![Frontier logo]()
$105
This Expedia deal was found by Cheapflights users on 4/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/412:25 pm
SAN
- SEA
1 stop21h 24m
Frontier
Deal found 4/19![Frontier logo]()
$106
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/278:04 am
SAN
- SEA
1 stop7h 06m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$107
This Southwest deal was found by Cheapflights users on 4/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:55 pm
SAN
- SEA
Nonstop3h 00m
Southwest
Deal found 4/19![Southwest logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/234:45 pm
SAN
- SEA
1 stop16h 25m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$110
This Trip.com deal was found by Cheapflights users on 4/22. 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.
Sat 5/169:35 am
SAN
- SEA
1 stop7h 48m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Fri 6/198:29 pm
SAN
- SEA
1 stop14h 06m
Frontier
Deal found 4/19![Frontier logo]()
$112
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sat 5/236:27 pm
SAN
- SEA
1 stop5h 05m
United Airlines
Deal found 4/19![United Airlines logo]()
$113
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:40 pm
SAN
- SEA
1 stop5h 32m
United Airlines
Deal found 4/20![United Airlines logo]()
$114
This Orbitz deal was found by Cheapflights users on 4/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:53 pm
SAN
- SEA
1 stop12h 42m
Frontier
Deal found 4/20![Frontier logo]()
$115
This Southwest deal was found by Cheapflights users on 4/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:30 pm
SAN
- SEA
1 stop6h 25m
Southwest
Deal found 4/20![Southwest logo]()
$116
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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $146 (Kiwi.com) |
One-way from | $104 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $282 |
Good round-trip deal | $257 or less |
Good one-way deal | $173 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 April 23, 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
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Tue 6/2
10:15 pm-9:10 am
1 stop10h 55m
Seattle/Tacoma Intl
Sat 6/6
9:55 am-4:31 pm
1 stop6h 36m
$214
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Wed 5/20
7:10 pm-10:24 pm
Nonstop3h 14m
Seattle/Tacoma Intl
Mon 5/25
7:15 am-10:05 am
Nonstop2h 50m
$217
Quickest round-trip
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 5/15
6:19 pm-9:30 pm
Nonstop3h 11m
Seattle/Tacoma Intl
Mon 5/18
3:02 pm-5:53 pm
Nonstop2h 51m
$217
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 5/29
8:04 pm-11:18 pm
Nonstop3h 14m
Seattle/Tacoma Intl
Mon 6/1
7:35 pm-10:26 pm
Nonstop2h 51m
$217
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 5/22
6:19 pm-9:30 pm
Nonstop3h 11m
Seattle/Tacoma Intl
Fri 5/29
7:35 pm-10:26 pm
Nonstop2h 51m
$237
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Thu 5/28
2:14 pm-6:54 pm
1 stop4h 40m
Seattle/Tacoma Intl
Mon 6/1
7:05 am-1:18 pm
1 stop6h 13m
$237
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Sun 5/10
11:00 am-2:20 pm
Nonstop3h 20m
Seattle/Tacoma Intl
Tue 5/12
7:15 am-10:05 am
Nonstop2h 50m
$257
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Thu 5/28
2:14 pm-6:54 pm
1 stop4h 40m
Seattle/Tacoma Intl
Sun 5/31
9:09 pm-11:59 pm
Nonstop2h 50m
$272
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 5/29
5:45 pm-10:37 pm
1 stop4h 52m
Seattle/Tacoma Intl
Sun 5/31
11:59 am-3:00 pm
Nonstop3h 01m
$272
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Thu 5/7
7:10 pm-10:24 pm
Nonstop3h 14m
Seattle/Tacoma Intl
Sun 5/10
9:45 am-12:42 pm
Nonstop2h 57m
$297
Showing 1-10 of 20 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 April.
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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 April 17, 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 72 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 $197). Flying from San Diego to Seattle in July is currently the most expensive (average of $301). 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 April 23, 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 April 18, 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 151 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 April 23, 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.
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
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
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Kent
Tumwater
Tukwila
Puyallup
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
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San Diego and Seattle flights
Browse other San Diego and Seattle flight options. Last updated on April 23, 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 April 23, 2026.
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Top 8 airlines flying from San Diego to Seattle
Discover the top 8 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 April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$149 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$107 | Average$257 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$110 | Average$215 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$133 | Average$274 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$138 | Average$286 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$142 | Average$294 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$151 | Average$295 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$552 | FlexibilityNo cancel fee | On-time71% |