$92+ Cheap flights from Seattle to San Diego (SEA - SAN)
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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
May 27 — Jun 31
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to San Diego 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 Seattle/Tacoma Intl to San Diego are usually found in January or September, booked 51 days in advance, depart on a Wednesday or Tuesday and return on a Thursday
Cheap flight deals from Seattle to San Diego
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Best
Last-minute
One-way
Cheapest flights from Seattle to San DiegoExplore the most affordable flight options available from Seattle to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.
Explore the most affordable flight options available from Seattle to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.
This Trip.com deal was found by Cheapflights users on 4/27. 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.
Wed 5/279:09 pm
SEA
- SAN
Nonstop2h 50m
Alaska Airlines
Wed 6/36:19 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$162
This Delta deal was found by Cheapflights users on 4/27. 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 5/2011:45 am
SEA
- SAN
Nonstop3h 03m
Delta
Wed 5/273:45 pm
SAN
- SEA
Nonstop3h 16m
Delta
Deal found 4/27![Delta logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 6/27:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Mon 6/810:07 pm
SAN
- SEA
1 stop12h 28m
Frontier
Deal found 4/23![Frontier logo]()
$173
This Southwest deal was found by Cheapflights users on 4/25. 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 5/1912:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Wed 5/204:30 pm
SAN
- SEA
1 stop6h 25m
Southwest
Deal found 4/25![Southwest logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 6/18:20 pm
SEA
- SAN
1 stop12h 27m
Frontier
Sat 6/69:37 am
SAN
- SEA
1 stop24h 29m
Frontier
Deal found 4/23![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/318:20 pm
SEA
- SAN
1 stop22h 21m
Frontier
Fri 6/59:43 am
SAN
- SEA
1 stop24h 53m
Frontier
Deal found 4/25![Frontier logo]()
$182
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:38 am
SEA
- SAN
1 stop5h 06m
United Airlines
Sun 8/305:00 pm
SAN
- SEA
1 stop4h 56m
United Airlines
Deal found 4/27![United Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 4/27. 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 6/173:25 pm
SEA
- SAN
1 stop6h 45m
Southwest
Wed 6/246:40 pm
SAN
- SEA
1 stop4h 30m
Southwest
Deal found 4/27![Southwest logo]()
$185
This United Airlines deal was found by Cheapflights users on 4/26. 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 5/191:21 pm
SEA
- SAN
2 stops6h 53m
United Airlines
Wed 5/2711:01 am
SAN
- SEA
1 stop5h 19m
United Airlines
Deal found 4/26![United Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 5/197:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Tue 5/266:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Deal found 4/25![Frontier logo]()
$190
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 5/167:26 am
SEA
- SAN
Nonstop2h 56m
Alaska Airlines
Wed 5/205:17 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$191
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:30 am
SEA
- SAN
Nonstop2h 55m
Southwest
Tue 9/16:00 pm
SAN
- SEA
Nonstop3h 00m
Southwest
Deal found 4/22![Southwest logo]()
$193
Best flights from Seattle to San DiegoDiscover carefully curated flight deals from Seattle to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 27, 2026.
Discover carefully curated flight deals from Seattle to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 27, 2026.
This Delta deal was found by Cheapflights users on 4/27. 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 5/2011:45 am
SEA
- SAN
Nonstop3h 03m
Delta
Wed 5/273:45 pm
SAN
- SEA
Nonstop3h 16m
Delta
Deal found 4/27![Delta logo]()
$165
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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 5/209:09 pm
SEA
- SAN
Nonstop2h 50m
Alaska Airlines
Sun 5/246:15 am
SAN
- SEA
Nonstop3h 10m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 4/26. 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 6/37:50 am
SEA
- SAN
1 stop4h 50m
Southwest
Fri 6/57:30 pm
SAN
- SEA
1 stop4h 20m
Southwest
Deal found 4/26![Southwest logo]()
$211
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/912:34 pm
SEA
- SAN
1 stop4h 50m
United Airlines
Tue 5/126:05 pm
SAN
- SEA
2 stops7h 07m
United Airlines
Deal found 4/23![United Airlines logo]()
$308
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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 5/293:02 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Mon 6/18:04 pm
SAN
- SEA
Nonstop3h 14m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 4/26. 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 5/237:35 pm
SEA
- SAN
Nonstop2h 51m
Delta
Tue 5/267:15 am
SAN
- SEA
Nonstop3h 15m
Delta
Deal found 4/26![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 5/279:55 am
SEA
- SAN
1 stop6h 36m
Alaska Airlines
Thu 5/2812:28 pm
SAN
- SEA
Nonstop3h 12m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$236
This Southwest deal was found by Cheapflights users on 4/25. 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 5/2611:40 am
SEA
- SAN
2 stops6h 45m
Southwest
Wed 5/2712:45 pm
SAN
- SEA
1 stop7h 35m
Southwest
Deal found 4/25![Southwest logo]()
$261
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.
Fri 6/53:20 pm
SEA
- SAN
Nonstop2h 45m
Delta
Wed 6/107:00 am
SAN
- SEA
Nonstop3h 05m
Delta
Deal found 4/22![Delta logo]()
$259
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.
Mon 7/68:10 pm
SEA
- SAN
1 stop11h 54m
Alaska Airlines
Tue 7/710:09 am
SAN
- SEA
Nonstop3h 04m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 4/26. 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 5/189:40 am
SEA
- SAN
1 stop4h 15m
Southwest
Mon 5/185:25 pm
SAN
- SEA
1 stop5h 10m
Southwest
Deal found 4/26![Southwest logo]()
$297
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.
Thu 7/912:14 pm
SEA
- SAN
Nonstop3h 02m
Delta
Mon 7/137:00 am
SAN
- SEA
Nonstop3h 02m
Delta
Deal found 4/22![Delta logo]()
$301
Last-minute flights from Seattle to San DiegoDiscover last-minute flight deals from Seattle to San Diego. Data last updated April 27, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Diego. Data last updated April 27, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Mon 5/116:25 am
SAN
- SEA
1 stop27h 24m
Frontier
Deal found 4/23![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/1111:37 am
SEA
- SAN
1 stop9h 27m
Frontier
Wed 5/139:59 pm
SAN
- SEA
1 stop12h 23m
Frontier
Deal found 4/23![Frontier logo]()
$196
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 5/167:26 am
SEA
- SAN
Nonstop2h 56m
Alaska Airlines
Wed 5/205:17 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 4/25. 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 5/1611:15 am
SEA
- SAN
Nonstop2h 50m
Southwest
Tue 5/194:30 pm
SAN
- SEA
1 stop6h 25m
Southwest
Deal found 4/25![Southwest logo]()
$201
This Southwest deal was found by Cheapflights users on 4/25. 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 5/1912:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Wed 5/204:30 pm
SAN
- SEA
1 stop6h 25m
Southwest
Deal found 4/25![Southwest logo]()
$175
This United Airlines deal was found by Cheapflights users on 4/26. 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 5/191:21 pm
SEA
- SAN
2 stops6h 53m
United Airlines
Wed 5/2711:01 am
SAN
- SEA
1 stop5h 19m
United Airlines
Deal found 4/26![United Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 5/197:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Tue 5/266:25 am
SAN
- SEA
1 stop27h 41m
Frontier
Deal found 4/25![Frontier logo]()
$190
This Delta deal was found by Cheapflights users on 4/27. 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 5/2011:45 am
SEA
- SAN
Nonstop3h 03m
Delta
Wed 5/273:45 pm
SAN
- SEA
Nonstop3h 16m
Delta
Deal found 4/27![Delta logo]()
$165
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:00 am
SEA
- SAN
1 stop4h 58m
United Airlines
Wed 5/279:26 am
SAN
- SEA
1 stop6h 54m
United Airlines
Deal found 4/22![United Airlines logo]()
$183
This Trip.com deal was found by Cheapflights users on 4/27. 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.
Wed 5/279:09 pm
SEA
- SAN
Nonstop2h 50m
Alaska Airlines
Wed 6/36:19 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/318:20 pm
SEA
- SAN
1 stop22h 21m
Frontier
Fri 6/59:43 am
SAN
- SEA
1 stop24h 53m
Frontier
Deal found 4/25![Frontier logo]()
$182
One-way flights from Seattle to San DiegoSearch for one-way flight options from Seattle to San Diego. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
Search for one-way flight options from Seattle to San Diego. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Sun 5/247:00 am
SEA
- SAN
1 stop7h 08m
United Airlines
Deal found 4/24![United Airlines logo]()
$92
This Southwest deal was found by Cheapflights users on 4/26. 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 6/245:35 pm
SEA
- SAN
1 stop4h 40m
Southwest
Deal found 4/26![Southwest logo]()
$93
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.
Sat 6/611:21 am
SEA
- SAN
2 stops12h 23m
Frontier
Deal found 4/22![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 6/18:20 pm
SEA
- SAN
2 stops19h 11m
Frontier
Deal found 4/24![Frontier logo]()
$96
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/233:30 pm
SEA
- SAN
2 stops8h 24m
United Airlines
Deal found 4/22![United Airlines logo]()
$97
This Priceline deal was found by Cheapflights users on 4/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 4/23![Frontier logo]()
$100
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 6/611:40 am
SEA
- SAN
1 stop12h 04m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 6/117:41 pm
SEA
- SAN
1 stop13h 28m
Frontier
Deal found 4/23![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 4/25. 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 5/117:50 pm
SEA
- SAN
1 stop28h 00m
Frontier
Deal found 4/25![Frontier logo]()
$105
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Deal found 4/22![Frontier logo]()
$106
Find flight deals from Seattle to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Diego (SAN). 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 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $162 (Trip.com) |
One-way from | $92 (United Airlines) |
Popular in | April |
Cheapest in | January |
Average price | $317 |
Good round-trip deal | $231 or less |
Good one-way deal | $142 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to San Diego 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 27, 2026.
Use the filters below to find and compare flights from Seattle to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 5/20
11:45 am-2:48 pm
Nonstop3h 03m
San Diego
Wed 5/27
3:45 pm-7:01 pm
Nonstop3h 16m
$165
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 5/20
9:09 pm-11:59 pm
Nonstop2h 50m
San Diego
Sun 5/24
6:15 am-9:25 am
Nonstop3h 10m
$191
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 6/3
7:50 am-12:40 pm
1 stop4h 50m
San Diego
Fri 6/5
7:30 pm-11:50 pm
1 stop4h 20m
$211
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Fri 5/29
3:02 pm-5:53 pm
Nonstop2h 51m
San Diego
Mon 6/1
8:04 pm-11:18 pm
Nonstop3h 14m
$217
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 5/27
9:55 am-4:31 pm
1 stop6h 36m
San Diego
Thu 5/28
12:28 pm-3:40 pm
Nonstop3h 12m
$236
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 5/23
7:35 pm-10:26 pm
Nonstop2h 51m
San Diego
Tue 5/26
7:15 am-10:30 am
Nonstop3h 15m
$257
Quickest round-trip
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Fri 6/5
3:20 pm-6:05 pm
Nonstop2h 45m
San Diego
Wed 6/10
7:00 am-10:05 am
Nonstop3h 05m
$259
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 5/26
11:40 am-6:25 pm
2 stops6h 45m
San Diego
Wed 5/27
12:45 pm-8:20 pm
1 stop7h 35m
$261
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 7/6
8:10 pm-8:04 am
1 stop11h 54m
San Diego
Tue 7/7
10:09 am-1:13 pm
Nonstop3h 04m
$267
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 5/18
9:40 am-1:55 pm
1 stop4h 15m
San Diego
Mon 5/18
5:25 pm-10:35 pm
1 stop5h 10m
$297
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Seattle to San Diego
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 Seattle to San Diego in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-San Diego 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 Seattle-San Diego 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 Seattle to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Seattle with our price prediction graph.
SEA-SAN
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 Seattle to San Diego
Prices
Airlines
Delays
How far ahead should I book a flight from Seattle to San Diego?
To ensure you get the cheapest price possible for a flight from Seattle to San Diego, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Seattle to San Diego?
Currently, January is the cheapest month in which you can book a flight from Seattle to San Diego (average of $192). Flying from Seattle to San Diego in April is currently the most expensive (average of $317). 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 SEA to SAN?
Find hourly flight availability from Seattle to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 27, 2026.
It’s optimal to fly from Seattle to San Diego at noon. By choosing this option you can save up to 5% on the cost of your flight, compared to a flight in the afternoon.
What is the cheapest day to fly from Seattle to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Seattle to San Diego. Price data was last updated on April 18, 2026.
Travelers seeking maximum savings on their Seattle to San Diego flight should consider departing on Saturday at noon 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 Seattle to San Diego delayed?
About 16% of weekly flights between Seattle and San Diego have experienced delays in the past year, with the average delay time being 122 minutes.
What is the most punctual flight time for Seattle to San Diego 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 Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to San Diego flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 13% of flights being delayed.
The best insider tips for Seattle to San Diego 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 Seattle to San Diego trip
Our travel experts
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated April 27, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Seattle to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Seattle to San Diego. 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 San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
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Seattle and San Diego flights
Browse other Seattle and San Diego flight options. Last updated on April 27, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on April 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 27, 2026.
Top 7 airlines flying from Seattle to San Diego
Discover the top 7 airlines that operate flights from Seattle to San Diego. 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 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$69 | Average$157 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$87 | Average$198 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$112 | Average$261 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$118 | Average$257 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$119 | Average$278 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$123 | Average$301 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$297 | Average$652 | FlexibilityNo cancel fee | On-time71% |