$79+ Cheap flights from San Diego to Seattle (SAN - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
Oct 14 — Oct 211
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 January or February, booked 86 days in advance, depart on a Friday or Thursday and return on a Wednesday
Cheap flight deals from San Diego to Seattle
Cheapest
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 September 14, 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 September 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:03 pm -
1 stop12h 39m
Mon 10/59:45 pm -
1 stop19h 14m
Deal found 9/11![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/29:03 pm -
1 stop12h 39m
Tue 10/610:57 am -
1 stop6h 02m
Deal found 9/10![Frontier logo]()
$138
This Trip.com deal was found by Cheapflights users on 9/10. 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 10/18:15 am -
1 stop10h 55m
Sun 10/47:04 am -
Nonstop3h 02m
Deal found 9/10![Alaska Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:32 pm -
1 stop13h 13m
Sat 11/144:27 pm -
1 stop7h 30m
Deal found 9/11![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/29:03 pm -
1 stop12h 39m
Wed 10/79:45 pm -
1 stop22h 04m
Deal found 9/10![Frontier logo]()
$143
This Expedia deal was found by Cheapflights users on 9/10. 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.
Wed 11/116:25 am -
1 stop8h 47m
Sun 11/159:13 pm -
1 stop22h 34m
Deal found 9/10![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:34 pm -
1 stop13h 14m
Tue 10/208:00 pm -
2 stops41h 16m
Deal found 9/11![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:34 pm -
1 stop14h 25m
Mon 11/24:27 pm -
1 stop23h 31m
Deal found 9/11![Frontier logo]()
$146
This Expedia deal was found by Cheapflights users on 9/10. 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.
Thu 10/19:03 pm -
1 stop12h 39m
Fri 10/29:45 pm -
1 stop19h 14m
Deal found 9/10![Frontier logo]()
$147
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:20 am -
Nonstop3h 18m
Mon 11/169:52 am -
Nonstop2h 56m
Deal found 9/10![Delta logo]()
$148
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/18:15 am -
1 stop10h 55m
Wed 10/78:35 pm -
Nonstop2h 51m
Deal found 9/10![Alaska Airlines logo]()
$150
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 September 14, 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 September 14, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/163:36 pm -
1 stop5h 24m
Mon 10/1911:31 am -
Nonstop3h 07m
Deal found 9/9![Alaska Airlines logo]()
$160
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 pm -
Nonstop3h 15m
Mon 11/97:55 am -
Nonstop2h 45m
Deal found 9/11![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 9/10. 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 9/267:00 am -
Nonstop3h 05m
Tue 10/67:59 pm -
Nonstop2h 52m
Deal found 9/10![Delta logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/24:36 pm -
1 stop5h 24m
Tue 10/64:54 pm -
Nonstop2h 49m
Deal found 9/10![Alaska Airlines logo]()
$160
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 10/46:15 am -
Nonstop3h 13m
Sun 10/259:08 pm -
Nonstop2h 51m
Deal found 9/10![Alaska Airlines logo]()
$172
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 pm -
Nonstop3h 05m
Mon 10/267:15 am -
1 stop5h 50m
Deal found 9/12![Southwest logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/216:15 am -
Nonstop3h 13m
Mon 10/268:18 am -
1 stop8h 18m
Deal found 9/9![Alaska Airlines logo]()
$205
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:55 pm -
2 stops10h 05m
Sat 10/1711:05 am -
2 stops7h 05m
Deal found 9/9![Southwest logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:27 pm -
Nonstop3h 06m
Mon 11/28:48 pm -
Nonstop2h 49m
Deal found 9/13![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:20 pm -
1 stop5h 40m
Mon 10/195:10 pm -
Nonstop2h 50m
Deal found 9/12![Southwest logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:20 pm -
Nonstop3h 06m
Sat 10/319:59 am -
1 stop7h 11m
Deal found 9/13![Alaska Airlines logo]()
$260
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:20 pm -
Nonstop3h 06m
Tue 11/31:50 pm -
1 stop4h 51m
Deal found 9/13![Alaska Airlines logo]()
$260
Last-minute flights from San Diego to SeattleDiscover last-minute flight deals from San Diego to Seattle. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Seattle. Data last updated September 14, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/236:25 am -
1 stop8h 43m
Tue 10/610:57 am -
1 stop6h 02m
Deal found 9/10![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/236:25 am -
1 stop8h 43m
Fri 10/99:16 pm -
1 stop19h 33m
Deal found 9/10![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/236:25 am -
1 stop8h 43m
Wed 10/79:45 pm -
1 stop22h 04m
Deal found 9/10![Frontier logo]()
$201
This Frontier deal was found by Cheapflights users on 9/9. 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 9/236:25 am -
1 stop8h 43m
Wed 9/304:27 pm -
1 stop7h 24m
Deal found 9/9![Frontier logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/236:25 am -
1 stop8h 43m
Sun 10/48:49 am -
Nonstop3h 01m
Deal found 9/10![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/236:25 am -
1 stop8h 43m
Sat 10/34:27 pm -
1 stop7h 24m
Deal found 9/10![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/249:03 pm -
1 stop12h 39m
Fri 10/99:16 pm -
1 stop19h 33m
Deal found 9/10![Frontier logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/249:03 pm -
1 stop12h 39m
Tue 10/68:15 pm -
2 stops20h 44m
Deal found 9/10![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/249:03 pm -
1 stop12h 39m
Sat 10/34:27 pm -
1 stop7h 24m
Deal found 9/10![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/249:03 pm -
1 stop12h 39m
Wed 10/79:45 pm -
1 stop22h 04m
Deal found 9/10![Frontier logo]()
$231
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 September 14, 2026.
Search for one-way flight options from San Diego to Seattle. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/206:27 pm -
Nonstop3h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$79
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/31:05 pm -
1 stop7h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$80
This Trip.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:03 pm -
1 stop12h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:32 pm -
1 stop14h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$83
This Expedia deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:32 pm -
1 stop14h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$84
This WAYA deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:56 am -
1 stop6h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$85
This WAYA deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:14 pm -
1 stop6h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:33 pm -
2 stops38h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/128:34 pm -
2 stops22h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$89
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Sun 10/256:15 am -
Nonstop3h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$92
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 September 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $136 (Kiwi.com) |
One-way from | $79 (Alaska Airlines) |
Popular in | July |
Cheapest in | January |
Average price | $234 |
Good round-trip deal | $194 or less |
Good one-way deal | $151 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 7,457,451 searches. Data last updated September 14, 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 San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Tue 12/8
1:49 pm-5:01 pm
Nonstop3h 12m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$79
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Sun 10/25
6:15 am-9:28 am
Nonstop3h 13m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$92
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Wed 11/11
5:45 pm-8:55 pm
Nonstop3h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Sat 11/14
8:50 am-12:00 pm
Nonstop3h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Sun 11/1
6:20 am-11:26 am
1 stop5h 06m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$104
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Fri 10/16
11:19 am-6:44 pm
1 stop7h 25m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$104
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Sun 10/25
6:20 am-11:26 am
1 stop5h 06m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$104
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Tue 11/17
5:45 pm-8:55 pm
Nonstop3h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
Quickest round-trip
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Thu 10/15
7:25 am-10:30 am
Nonstop3h 05m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
San DiegoSeattle
SAN San Diego - SEA Seattle/Tacoma Intl
SANSEA
San Diego
Mon 10/19
5:30 pm-11:45 pm
1 stop6h 15m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
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 September.
| 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 Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Diego to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from San Diego with our price prediction graph.
SAN-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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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 85 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 $197). Flying from San Diego to Seattle in July is currently the most expensive (average of $326). 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 September 14, 2026.
It’s typically best to fly out from San Diego to Seattle in the evening. Doing so could potentially save you 26% 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 September 12, 2026.
Travelers seeking maximum savings on their San Diego to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday afternoons 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 155 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 September 14, 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
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for San Diego to Seattle
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Complete your trip
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Search flights from San Diego to Seattle by cabin class
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San Diego and Seattle flights
Browse other San Diego and Seattle flight options. Last updated on September 14, 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 September 14, 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 September 14, 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 7,457,451 searches. Data last updated September 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$357 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$100 | Average$257 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$135 | Average$292 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$137 | Average$278 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$142 | Average$258 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$272 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$387 | Average$634 | FlexibilityNo cancel fee | On-time71% |