$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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
Jun 18 — Jun 251
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
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 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
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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 May 19, 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 May 19, 2026.
This Southwest deal was found by Cheapflights users on 5/14. 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.
Thu 6/412:55 pm
SAN
- SEA
1 stop7h 15m
Southwest
Mon 6/85:35 pm
SEA
- SAN
1 stop5h 05m
Southwest
Deal found 5/14![Southwest logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
Wed 6/36:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Fri 6/57:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 5/14![Frontier logo]()
$180
This Southwest deal was found by Cheapflights users on 5/13. 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 6/96:30 am
SAN
- SEA
1 stop7h 05m
Southwest
Tue 7/217:30 am
SEA
- SAN
1 stop6h 55m
Southwest
Deal found 5/13![Southwest logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
Wed 6/36:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Thu 6/48:20 pm
SEA
- SAN
1 stop12h 27m
Frontier
Deal found 5/14![Frontier logo]()
$182
This Trip.com deal was found by Cheapflights users on 5/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:15 am
SAN
- SEA
Nonstop3h 10m
Alaska Airlines
Mon 6/87:26 am
SEA
- SAN
Nonstop2h 56m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$183
This Delta deal was found by Cheapflights users on 5/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:36 pm
SAN
- SEA
Nonstop2h 56m
Delta
Tue 7/219:45 am
SEA
- SAN
Nonstop2h 54m
Delta
Deal found 5/14![Delta logo]()
$185
This Southwest deal was found by Cheapflights users on 5/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/62:45 pm
SAN
- SEA
1 stop8h 25m
Southwest
Wed 6/104:45 pm
SEA
- SAN
1 stop6h 10m
Southwest
Deal found 5/17![Southwest logo]()
$186
This Southwest deal was found by Cheapflights users on 5/14. 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 6/65:15 pm
SAN
- SEA
1 stop4h 35m
Southwest
Mon 6/82:25 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Deal found 5/14![Southwest logo]()
$187
This United Airlines deal was found by Cheapflights users on 5/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:01 am
SAN
- SEA
1 stop5h 19m
United Airlines
Tue 7/145:04 pm
SEA
- SAN
1 stop6h 50m
United Airlines
Deal found 5/18![United Airlines logo]()
$189
This Frontier deal was found by Cheapflights users on 5/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:25 am
SAN
- SEA
1 stop7h 54m
Frontier
Tue 8/187:41 pm
SEA
- SAN
1 stop13h 01m
Frontier
Deal found 5/17![Frontier logo]()
$190
This Southwest deal was found by Cheapflights users on 5/14. 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.
Mon 6/87:30 pm
SAN
- SEA
1 stop4h 20m
Southwest
Wed 6/1010:55 am
SEA
- SAN
1 stop7h 25m
Southwest
Deal found 5/14![Southwest logo]()
$191
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:43 pm
SAN
- SEA
1 stop23h 11m
Alaska Airlines
Sun 11/88:42 pm
SEA
- SAN
Nonstop2h 49m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$193
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 May 19, 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 May 19, 2026.
This Southwest deal was found by Cheapflights users on 5/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:15 pm
SAN
- SEA
1 stop5h 55m
Southwest
Tue 6/165:40 am
SEA
- SAN
1 stop7h 25m
Southwest
Deal found 5/17![Southwest logo]()
$181
This Delta deal was found by Cheapflights users on 5/18. 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 6/177:10 pm
SAN
- SEA
Nonstop3h 10m
Delta
Tue 6/237:15 am
SEA
- SAN
Nonstop2h 53m
Delta
Deal found 5/18![Delta logo]()
$185
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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.
Tue 7/76:18 am
SAN
- SEA
Nonstop3h 01m
Alaska Airlines
Sat 7/116:21 am
SEA
- SAN
Nonstop2h 49m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$226
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Fri 6/266:27 pm
SAN
- SEA
1 stop7h 02m
United Airlines
Sun 6/285:15 am
SEA
- SAN
1 stop4h 44m
United Airlines
Deal found 5/17![United Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 5/16. 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.
Wed 7/14:03 pm
SAN
- SEA
Nonstop3h 02m
Delta
Sat 7/47:45 pm
SEA
- SAN
Nonstop2h 53m
Delta
Deal found 5/16![Delta logo]()
$226
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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.
Wed 6/106:18 am
SAN
- SEA
Nonstop3h 01m
Alaska Airlines
Tue 6/1611:55 am
SEA
- SAN
1 stop7h 26m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1311:05 am
SAN
- SEA
Nonstop3h 16m
Delta
Tue 6/167:45 pm
SEA
- SAN
Nonstop2h 53m
Delta
Deal found 5/14![Delta logo]()
$226
This Southwest deal was found by Cheapflights users on 5/14. 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 8/1112:20 pm
SAN
- SEA
2 stops7h 55m
Southwest
Sun 8/166:55 am
SEA
- SAN
1 stop5h 35m
Southwest
Deal found 5/14![Southwest logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:03 pm
SAN
- SEA
1 stop11h 46m
Alaska Airlines
Sun 6/77:26 am
SEA
- SAN
Nonstop2h 56m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$280
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 7/176:18 am
SAN
- SEA
Nonstop3h 01m
Alaska Airlines
Mon 7/206:21 am
SEA
- SAN
Nonstop2h 49m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$287
Last-minute flights from San Diego to SeattleDiscover last-minute flight deals from San Diego to Seattle. Data last updated May 19, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Seattle. Data last updated May 19, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 5/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Wed 5/277:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Deal found 5/13![Frontier logo]()
$297
This Booking.com deal was found by Cheapflights users on 5/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Sun 5/317:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 5/16![Frontier logo]()
$313
This Super.com deal was found by Cheapflights users on 5/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2310:07 pm
SAN
- SEA
1 stop12h 29m
Frontier
Fri 6/53:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 5/18![Frontier logo]()
$327
This Super.com deal was found by Cheapflights users on 5/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Fri 5/293:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 5/15![Frontier logo]()
$303
This Trip.com deal was found by Cheapflights users on 5/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Mon 6/13:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 5/15![Frontier logo]()
$308
This eDestinos deal was found by Cheapflights users on 5/18. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/269:37 am
SAN
- SEA
1 stop24h 29m
Frontier
Mon 6/13:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 5/18![Frontier logo]()
$302
This Booking.com deal was found by Cheapflights users on 5/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:37 am
SAN
- SEA
1 stop28h 24m
Frontier
Sun 5/317:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 5/14![Frontier logo]()
$261
This Frontier deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:25 am
SAN
- SEA
1 stop7h 36m
Frontier
Sun 5/317:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 5/14![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:25 am
SAN
- SEA
1 stop7h 36m
Frontier
Tue 6/27:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 5/14![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:25 am
SAN
- SEA
1 stop7h 36m
Frontier
Sat 5/307:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 5/14![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 5/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:25 am
SAN
- SEA
1 stop7h 36m
Frontier
Mon 6/13:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 5/18![Frontier logo]()
$300
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 May 19, 2026.
Search for one-way flight options from San Diego to Seattle. Find affordable one-way fares based on user searches. Data last updated May 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Tue 7/149:53 pm
SAN
- SEA
1 stop12h 46m
Frontier
Deal found 5/17![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 5/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:25 am
SAN
- SEA
1 stop7h 54m
Frontier
Deal found 5/15![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Mon 8/319:53 pm
SAN
- SEA
1 stop12h 42m
Frontier
Deal found 5/15![Frontier logo]()
$106
This United Airlines deal was found by Cheapflights users on 5/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:41 pm
SAN
- SEA
1 stop5h 48m
United Airlines
Deal found 5/14![United Airlines logo]()
$107
This United Airlines deal was found by Cheapflights users on 5/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:15 am
SAN
- SEA
2 stops8h 09m
United Airlines
Deal found 5/14![United Airlines logo]()
$108
This Delta deal was found by Cheapflights users on 5/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:10 pm
SAN
- SEA
Nonstop3h 12m
Delta
Deal found 5/14![Delta logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Mon 7/138:29 pm
SAN
- SEA
1 stop14h 10m
Frontier
Deal found 5/19![Frontier logo]()
$110
This Southwest deal was found by Cheapflights users on 5/14. 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.
Thu 8/64:40 pm
SAN
- SEA
Nonstop2h 55m
Southwest
Deal found 5/14![Southwest logo]()
$111
This Super.com deal was found by Cheapflights users on 5/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:29 pm
SAN
- SEA
1 stop14h 10m
Frontier
Deal found 5/18![Frontier logo]()
$112
This Super.com deal was found by Cheapflights users on 5/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:43 am
SAN
- SEA
1 stop24h 52m
Frontier
Deal found 5/15![Frontier logo]()
$114
This Expedia deal was found by Cheapflights users on 5/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:43 pm
SAN
- SEA
1 stop12h 17m
Frontier
Deal found 5/18![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 5/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/189:43 am
SAN
- SEA
1 stop24h 52m
Frontier
Deal found 5/18![Frontier 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 May 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (Southwest) |
One-way from | $104 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $238 |
Good round-trip deal | $253 or less |
Good one-way deal | $181 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 May 19, 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 6/9
5:15 pm-11:10 pm
1 stop5h 55m
Seattle/Tacoma Intl
Tue 6/16
5:40 am-1:05 pm
1 stop7h 25m
$181
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Wed 6/17
7:10 pm-10:20 pm
Nonstop3h 10m
Seattle/Tacoma Intl
Tue 6/23
7:15 am-10:08 am
Nonstop2h 53m
$185
Quickest round-trip
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Tue 7/7
6:18 am-9:19 am
Nonstop3h 01m
Seattle/Tacoma Intl
Sat 7/11
6:21 am-9:10 am
Nonstop2h 49m
$226
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Wed 7/1
4:03 pm-7:05 pm
Nonstop3h 02m
Seattle/Tacoma Intl
Sat 7/4
7:45 pm-10:38 pm
Nonstop2h 53m
$226
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Sat 6/13
11:05 am-2:21 pm
Nonstop3h 16m
Seattle/Tacoma Intl
Tue 6/16
7:45 pm-10:38 pm
Nonstop2h 53m
$226
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Wed 6/10
6:18 am-9:19 am
Nonstop3h 01m
Seattle/Tacoma Intl
Tue 6/16
11:55 am-7:21 pm
1 stop7h 26m
$239
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 6/26
6:27 pm-1:29 am
1 stop7h 02m
Seattle/Tacoma Intl
Sun 6/28
5:15 am-9:59 am
1 stop4h 44m
$266
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Thu 6/4
9:03 pm-8:49 am
1 stop11h 46m
Seattle/Tacoma Intl
Sun 6/7
7:26 am-10:22 am
Nonstop2h 56m
$280
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Tue 8/11
12:20 pm-8:15 pm
2 stops7h 55m
Seattle/Tacoma Intl
Sun 8/16
6:55 am-12:30 pm
1 stop5h 35m
$286
San DiegoSeattle
SAN - SEA
SANSEA
San Diego
Fri 7/17
6:18 am-9:19 am
Nonstop3h 01m
Seattle/Tacoma Intl
Mon 7/20
6:21 am-9:10 am
Nonstop2h 49m
$287
Showing 1-10 of 22 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 May.
| 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 Accuracy2 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?
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 71 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 $307). 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 May 19, 2026.
It’s typically best to fly out from San Diego to Seattle in the evening. Doing so could potentially save you 15% 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 May 16, 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 11% of weekly flights between San Diego and Seattle have experienced delays in the past year, with the average delay time being 152 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 May 19, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, 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
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - 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 locationsSeaTac
Tacoma
Ocean Shores
Olympia
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville
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San Diego and Seattle flights
Browse other San Diego and Seattle flight options. Last updated on May 19, 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 May 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 May 19, 2026.
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 May 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$157 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$107 | Average$259 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$110 | Average$215 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$276 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$138 | Average$289 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$149 | Average$300 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$151 | Average$272 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$483 | FlexibilityNo cancel fee | On-time71% |