$88+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
May 2 — May 91
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 Tuesday or Wednesday 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 2, 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 2, 2026.
This Southwest deal was found by Cheapflights users on 4/1. 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 6/52:25 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Sun 6/77:50 pm
SAN
- SEA
1 stop5h 00m
Southwest
Deal found 4/1![Southwest logo]()
$133
This Southwest deal was found by Cheapflights users on 4/1. 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 4/2812:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Tue 5/51:35 pm
SAN
- SEA
2 stops6h 45m
Southwest
Deal found 4/1![Southwest logo]()
$138
This Southwest deal was found by Cheapflights users on 4/2. 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 5/16:15 pm
SEA
- SAN
1 stop4h 50m
Southwest
Fri 5/86:15 pm
SAN
- SEA
1 stop4h 20m
Southwest
Deal found 4/2![Southwest logo]()
$143
This Expedia deal was found by Cheapflights users on 4/1. 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 6/19:09 pm
SEA
- SAN
Nonstop2h 50m
Alaska Airlines
Wed 6/106:18 am
SAN
- SEA
Nonstop3h 01m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$144
This Southwest deal was found by Cheapflights users on 4/1. 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.
Sun 5/36:50 am
SEA
- SAN
1 stop4h 55m
Southwest
Thu 5/73:50 pm
SAN
- SEA
2 stops6h 40m
Southwest
Deal found 4/1![Southwest logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/297:12 pm
SEA
- SAN
1 stop28h 47m
Frontier
Wed 5/67:34 pm
SAN
- SEA
1 stop14h 48m
Frontier
Deal found 3/31![Frontier logo]()
$152
This Southwest deal was found by Cheapflights users on 4/1. 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 4/299:20 am
SEA
- SAN
2 stops8h 25m
Southwest
Wed 5/64:30 pm
SAN
- SEA
2 stops7h 25m
Southwest
Deal found 4/1![Southwest logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/287:12 pm
SEA
- SAN
1 stop24h 47m
Frontier
Wed 5/67:34 pm
SAN
- SEA
1 stop14h 48m
Frontier
Deal found 3/30![Frontier logo]()
$158
This CheapOair deal was found by Cheapflights users on 3/29. 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.
Mon 4/207:12 pm
SEA
- SAN
1 stop27h 54m
Frontier
Sat 4/257:15 am
SAN
- SEA
1 stop26h 12m
Frontier
Deal found 3/29![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 3/31. 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.
Tue 5/57:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Fri 5/810:07 pm
SAN
- SEA
1 stop12h 15m
Frontier
Deal found 3/31![Frontier logo]()
$161
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 5/44:42 pm
SEA
- SAN
Nonstop2h 57m
Alaska Airlines
Wed 5/66:34 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$163
This Expedia deal was found by Cheapflights users on 4/1. 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.
Sat 5/237:35 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Tue 5/268:04 pm
SAN
- SEA
Nonstop3h 14m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$164
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 2, 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 2, 2026.
This Southwest deal was found by Cheapflights users on 4/1. 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.
Sun 5/36:50 am
SEA
- SAN
1 stop4h 55m
Southwest
Sun 5/101:00 pm
SAN
- SEA
Nonstop3h 05m
Southwest
Deal found 4/1![Southwest logo]()
$200
This United Airlines deal was found by Cheapflights users on 4/2. 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 5/127:08 am
SEA
- SAN
1 stop4h 46m
United Airlines
Sat 5/161:35 pm
SAN
- SEA
1 stop7h 31m
United Airlines
Deal found 4/2![United Airlines logo]()
$206
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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 5/93:44 pm
SEA
- SAN
Nonstop2h 57m
Alaska Airlines
Tue 5/122:23 pm
SAN
- SEA
Nonstop3h 09m
Alaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 3/30. 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 4/2511:45 am
SEA
- SAN
Nonstop2h 53m
Delta
Mon 4/277:30 am
SAN
- SEA
Nonstop3h 14m
Delta
Deal found 3/30![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 4/223:44 pm
SEA
- SAN
Nonstop2h 57m
Alaska Airlines
Wed 4/2910:25 am
SAN
- SEA
1 stop8h 42m
Alaska Airlines
Deal found 3/30![Alaska Airlines logo]()
$229
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 5/29:53 am
SEA
- SAN
1 stop6h 08m
Alaska Airlines
Sat 5/94:49 pm
SAN
- SEA
Nonstop3h 08m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 4/1. 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 5/1211:40 am
SEA
- SAN
2 stops6h 45m
Southwest
Sat 5/168:35 am
SAN
- SEA
2 stops8h 30m
Southwest
Deal found 4/1![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 4/218:10 am
SEA
- SAN
1 stop5h 17m
Alaska Airlines
Fri 4/248:35 pm
SAN
- SEA
Nonstop3h 15m
Alaska Airlines
Deal found 3/30![Alaska Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 3/31. 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 5/239:00 am
SEA
- SAN
2 stops7h 55m
Southwest
Tue 5/264:30 pm
SAN
- SEA
1 stop6h 25m
Southwest
Deal found 3/31![Southwest logo]()
$321
This Southwest deal was found by Cheapflights users on 3/28. 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 5/127:50 am
SEA
- SAN
1 stop4h 50m
Southwest
Tue 5/196:30 am
SAN
- SEA
2 stops6h 55m
Southwest
Deal found 3/28![Southwest logo]()
$324
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 6/228:48 am
SEA
- SAN
1 stop6h 58m
Alaska Airlines
Tue 6/236:18 am
SAN
- SEA
Nonstop3h 01m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$306
This Alaska Airlines deal was found by Cheapflights users on 3/29. 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 6/47:00 am
SEA
- SAN
1 stop5h 14m
Alaska Airlines
Mon 6/88:04 pm
SAN
- SEA
Nonstop3h 14m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$334
Last-minute flights from Seattle to San DiegoDiscover last-minute flight deals from Seattle to San Diego. Data last updated April 2, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Diego. Data last updated April 2, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/29. 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.
Mon 4/207:12 pm
SEA
- SAN
1 stop27h 54m
Frontier
Sat 4/257:15 am
SAN
- SEA
1 stop26h 12m
Frontier
Deal found 3/29![Frontier logo]()
$160
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 4/227:40 pm
SEA
- SAN
Nonstop2h 56m
Alaska Airlines
Wed 4/291:00 pm
SAN
- SEA
Nonstop3h 10m
Alaska Airlines
Deal found 3/30![Alaska Airlines logo]()
$165
This Southwest deal was found by Cheapflights users on 4/1. 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 4/2812:10 pm
SEA
- SAN
Nonstop2h 55m
Southwest
Tue 5/51:35 pm
SAN
- SEA
2 stops6h 45m
Southwest
Deal found 4/1![Southwest logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/287:12 pm
SEA
- SAN
1 stop24h 47m
Frontier
Wed 5/67:34 pm
SAN
- SEA
1 stop14h 48m
Frontier
Deal found 3/30![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/297:12 pm
SEA
- SAN
1 stop28h 47m
Frontier
Wed 5/67:34 pm
SAN
- SEA
1 stop14h 48m
Frontier
Deal found 3/31![Frontier logo]()
$152
This Southwest deal was found by Cheapflights users on 4/1. 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 4/299:20 am
SEA
- SAN
2 stops8h 25m
Southwest
Wed 5/64:30 pm
SAN
- SEA
2 stops7h 25m
Southwest
Deal found 4/1![Southwest logo]()
$153
This Southwest deal was found by Cheapflights users on 4/2. 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 5/16:15 pm
SEA
- SAN
1 stop4h 50m
Southwest
Fri 5/85:25 pm
SAN
- SEA
1 stop5h 10m
Southwest
Deal found 4/2![Southwest logo]()
$143
This Southwest deal was found by Cheapflights users on 4/1. 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.
Sun 5/36:50 am
SEA
- SAN
1 stop4h 55m
Southwest
Thu 5/72:15 pm
SAN
- SEA
Nonstop3h 05m
Southwest
Deal found 4/1![Southwest logo]()
$133
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 5/44:42 pm
SEA
- SAN
Nonstop2h 57m
Alaska Airlines
Wed 5/66:34 pm
SAN
- SEA
Nonstop3h 11m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$163
This Frontier deal was found by Cheapflights users on 3/31. 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.
Tue 5/57:50 pm
SEA
- SAN
1 stop12h 52m
Frontier
Fri 5/810:07 pm
SAN
- SEA
1 stop12h 15m
Frontier
Deal found 3/31![Frontier logo]()
$161
This Expedia deal was found by Cheapflights users on 4/1. 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.
Sat 5/237:35 pm
SEA
- SAN
Nonstop2h 51m
Alaska Airlines
Tue 5/268:04 pm
SAN
- SEA
Nonstop3h 14m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$164
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 2, 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 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 4/287:12 pm
SEA
- SAN
1 stop24h 47m
Frontier
Deal found 4/1![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 4/297:12 pm
SEA
- SAN
1 stop28h 47m
Frontier
Deal found 3/29![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/269:54 pm
SEA
- SAN
1 stop20h 02m
Frontier
Deal found 3/30![Frontier logo]()
$92
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Wed 5/62:57 pm
SEA
- SAN
1 stop6h 58m
American Airlines
Deal found 3/31![American Airlines logo]()
$93
This Southwest deal was found by Cheapflights users on 3/31. 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 6/307:30 am
SEA
- SAN
2 stops7h 20m
Southwest
Deal found 3/31![Southwest logo]()
$98
This iWofly deal was found by Cheapflights users on 4/1. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:07 pm
SEA
- SAN
1 stop12h 27m
Frontier
Deal found 4/1![Frontier logo]()
$99
This Frontier deal was found by Cheapflights users on 3/31. 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.
Fri 5/14:20 pm
SEA
- SAN
1 stop7h 39m
Frontier
Deal found 3/31![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 3/31. 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 6/43:19 pm
SEA
- SAN
1 stop8h 31m
Frontier
Deal found 3/31![Frontier logo]()
$101
This Delta deal was found by Cheapflights users on 3/31. 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 7/17:15 am
SEA
- SAN
Nonstop2h 53m
Delta
Deal found 3/31![Delta logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/37:12 pm
SEA
- SAN
1 stop13h 22m
Frontier
Deal found 3/31![Frontier logo]()
$104
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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $133 (Southwest) |
One-way from | $88 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $297 |
Good round-trip deal | $213 or less |
Good one-way deal | $178 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 2, 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
Sun 5/3
6:50 am-11:45 am
1 stop4h 55m
San Diego
Sun 5/10
1:00 pm-4:05 pm
Nonstop3h 05m
$200
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 5/12
7:08 am-11:54 am
1 stop4h 46m
San Diego
Sat 5/16
1:35 pm-9:06 pm
1 stop7h 31m
$206
Quickest round-trip
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 5/9
3:44 pm-6:41 pm
Nonstop2h 57m
San Diego
Tue 5/12
2:23 pm-5:32 pm
Nonstop3h 09m
$217
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 4/25
11:45 am-2:38 pm
Nonstop2h 53m
San Diego
Mon 4/27
7:30 am-10:44 am
Nonstop3h 14m
$217
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 4/22
3:44 pm-6:41 pm
Nonstop2h 57m
San Diego
Wed 4/29
10:25 am-7:07 pm
1 stop8h 42m
$229
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 5/2
9:53 am-4:01 pm
1 stop6h 08m
San Diego
Sat 5/9
4:49 pm-7:57 pm
Nonstop3h 08m
$272
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 4/21
8:10 am-1:27 pm
1 stop5h 17m
San Diego
Fri 4/24
8:35 pm-11:50 pm
Nonstop3h 15m
$285
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 5/12
11:40 am-6:25 pm
2 stops6h 45m
San Diego
Sat 5/16
8:35 am-5:05 pm
2 stops8h 30m
$303
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 6/22
8:48 am-3:46 pm
1 stop6h 58m
San Diego
Tue 6/23
6:18 am-9:19 am
Nonstop3h 01m
$306
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 5/23
9:00 am-4:55 pm
2 stops7h 55m
San Diego
Tue 5/26
4:30 pm-10:55 pm
1 stop6h 25m
$321
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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to San Diego. Price data was last updated on April 2, 2026.
To ensure you get the cheapest price possible for a flight from Seattle to San Diego, you should look to book at least 51 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, June is the cheapest month in which you can book a flight from Seattle to San Diego (average of $55). Flying from Seattle to San Diego in July is currently the most expensive (average of $123). 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 2, 2026.
It’s optimal to fly from Seattle to San Diego in the morning. 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 March 28, 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. Sunday at noon 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 121 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?
Saturday 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 2, 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.
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
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 2, 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 2, 2026.
Popular flight searches
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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 2, 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 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$69 | Average$154 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$87 | Average$201 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$111 | Average$260 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$118 | Average$270 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$122 | Average$300 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$128 | Average$257 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$246 | Average$602 | FlexibilityNo cancel fee | On-time71% |