Plan to arrive at SEA at least two hours before your flight. Use SEA Spot Saver for security appointments to reduce wait times.
$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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Jun 17 — Jun 241
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 83 days in advance, depart on a Tuesday or Wednesday and return on a Friday
Cheap 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 June 12, 2025.
Round-trip from | $161 (Cheapflightsfares) |
|---|---|
One-way from | $88 (Mytrip) |
Popular in | December |
Cheapest in | January |
Average price | $287 |
Good round-trip deal | $257 or less |
Good one-way deal | $128 or less |
Find flight deals from Seattle to San Diego
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 June 12, 2025.
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 June 12, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/23:58 pmSEA - SAN
1 stop7h 31mSpirit Airlines
Wed 7/96:15 amSAN - SEA
1 stop10h 10mSpirit Airlines
Deal found 6/10![Spirit Airlines logo]()
$161
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/279:53 amSEA - SAN
Nonstop2h 59mAlaska Airlines
Wed 9/179:30 amSAN - SEA
Nonstop3h 07mAlaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 9/85:45 pmSEA - SAN
Nonstop2h 53mHawaiian Airlines
Sat 9/131:49 pmSAN - SEA
Nonstop3h 02mHawaiian Airlines
Deal found 6/11![Hawaiian Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/301:30 pmSEA - SAN
1 stop4h 35mSouthwest
Tue 9/23:35 pmSAN - SEA
1 stop7h 15mSouthwest
Deal found 6/10![Southwest logo]()
$192
This Orbitz deal was found by Cheapflights users on 6/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/285:30 pmSEA - SAN
1 stop5h 36mMultiple Airlines
Tue 8/128:15 amSAN - SEA
Nonstop3h 03mMultiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$209
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 8/57:35 pmSEA - SAN
Nonstop2h 52mDelta
Mon 8/187:30 amSAN - SEA
Nonstop3h 04mDelta
Deal found 6/10![Delta logo]()
$227
This Frontier deal was found by Cheapflights users on 6/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/103:11 pmSEA - SAN
2 stops18h 41mFrontier
Thu 8/216:25 amSAN - SEA
1 stop8h 15mFrontier
Deal found 6/11![Frontier logo]()
$232
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:25 amSEA - SAN
1 stop7h 15mUnited Airlines
Sat 9/131:58 pmSAN - SEA
1 stop4h 51mUnited Airlines
Deal found 6/10![United Airlines logo]()
$288
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 June 12, 2025.
Use the filters below to find and compare flights from Seattle to San Diego that are best for you.
Fly from
Seattle
Fly to
San Diego
Route
Depart
Return
Price
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 7/2
3:58 pm-11:29 pm
1 stop7h 31m
San Diego
Wed 7/9
6:15 am-4:25 pm
1 stop10h 10m
$161
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Wed 8/27
9:53 am-12:52 pm
Nonstop2h 59m
San Diego
Wed 9/17
9:30 am-12:37 pm
Nonstop3h 07m
$177
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 9/8
5:45 pm-8:38 pm
Nonstop2h 53m
San Diego
Sat 9/13
1:49 pm-4:51 pm
Nonstop3h 02m
$182
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sat 8/30
1:30 pm-6:05 pm
1 stop4h 35m
San Diego
Tue 9/2
3:35 pm-10:50 pm
1 stop7h 15m
$192
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 7/28
5:30 pm-11:06 pm
1 stop5h 36m
San Diego
Tue 8/12
8:15 am-11:18 am
Nonstop3h 03m
$209
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Tue 8/5
7:35 pm-10:27 pm
Nonstop2h 52m
San Diego
Mon 8/18
7:30 am-10:34 am
Nonstop3h 04m
$227
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Sun 8/10
3:11 pm-9:52 am
2 stops18h 41m
San Diego
Thu 8/21
6:25 am-2:40 pm
1 stop8h 15m
$232
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 9/8
6:25 am-1:40 pm
1 stop7h 15m
San Diego
Sat 9/13
1:58 pm-6:49 pm
1 stop4h 51m
$288
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 7/14
5:30 pm-5:55 pm
1 stop24h 25m
$88
SeattleSan Diego
SEA - SAN
SEASAN
Seattle/Tacoma Intl
Mon 7/14
3:11 pm-6:19 pm
1 stop27h 08m
$109
Showing 1-10 of 16 results
The best insider tips for Seattle to San Diego flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to San Diego trip
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.
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
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 June 9, 2025.
To ensure you get the cheapest price possible for a flight from Seattle to San Diego, you should look to book at least 83 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, August is the cheapest month in which you can book a flight from Seattle to San Diego (average of $286). Flying from Seattle to San Diego in March is currently the most expensive (average of $366). 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 June 12, 2025.
It’s optimal to fly from Seattle to San Diego in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight at noon.
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 June 8, 2025.
Travelers seeking maximum savings on their Seattle to San Diego flight should consider departing on Wednesday evenings 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.
Weekly flight availability from Seattle to San Diego
Explore weekly flight availability from Seattle to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.
The most flights from SEA to SAN are scheduled on a Thursday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).
Rainfall in San Diego by month
Plan your trip to San Diego by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.
Temperature in San Diego by month
Plan your trip to San Diego by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
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 June 12, 2025.
Read through reviews of airlines operating flights from Seattle to San Diego, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Overall
8.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Entertainment
7.1
Overall
8.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Entertainment
7.1
Overall
8.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Entertainment
7.1
Overall
8.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Entertainment
7.1
Overall
8.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
Entertainment
7.1
Overall
8.0
Boarding
8.1
Food
7.1
Crew
8.5
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentSeleste,Dec 2024
FAT - SAN
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 Seattle?
Book flights to Seattle if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado
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Alternative routes for Seattle to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Seattle to San Diego
Discover the top 8 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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$160 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$101 | Average$207 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$117 | Average$246 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$131 | Average$297 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$142 | Average$305 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$173 | Average$311 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$176 | Average$321 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$194 | Average$401 | FlexibilityNo cancel fee | On-time63% |