San Diego

$84+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Apr 30 — May 71
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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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Diego are usually found in September or January, booked 54 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 April 25, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$170
(Expedia)

One-way from

$84
(Southwest)

Popular in

December

Cheapest in

September

Average price

$317

Good round-trip deal

$209 or less

Good one-way deal

$104 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Diego flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Diego flights.
From Seattle/Tacoma Intl to San Diego
One-way flight from Seattle/Tacoma Intl to San Diego
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Diego.
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Diego.

Find flight deals from Seattle to San Diego

Cheapest flights from Seattle to San Diego
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 25, 2025.

This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/306:00 amSEA - SAN
1 stop12h 03mSpirit Airlines
Sat 5/315:43 pmSAN - SEA
1 stop6h 27mSpirit Airlines
Deal found 4/24$170
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1612:31 pmSEA - SAN
1 stop7h 23mMultiple Airlines
Sat 5/176:58 pmSAN - SEA
1 stop5h 12mMultiple Airlines
Deal found 4/24$172
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3012:58 pmSEA - SAN
1 stop7h 05mAlaska Airlines
Mon 6/24:59 pmSAN - SEA
Nonstop3h 01mAlaska Airlines
Deal found 4/25$177
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/269:35 pmSEA - SAN
1 stop9h 49mFrontier
Wed 4/301:10 pmSAN - SEA
1 stop11h 34mFrontier
Deal found 4/24$178
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/56:59 pmSEA - SAN
Nonstop2h 46mHawaiian Airlines
Sun 6/86:15 amSAN - SEA
Nonstop3h 09mHawaiian Airlines
Deal found 4/24$187
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.
Wed 6/117:20 amSEA - SAN
1 stop5h 08mUnited Airlines
Mon 9/221:58 pmSAN - SEA
1 stop6h 56mUnited Airlines
Deal found 4/24$203
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/227:30 amSEA - SAN
Nonstop2h 50mDelta
Sat 5/241:55 pmSAN - SEA
Nonstop3h 05mDelta
Deal found 4/24$227
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/86:15 amSEA - SAN
1 stop5h 10mSouthwest
Fri 6/137:55 pmSAN - SEA
1 stop5h 30mSouthwest
Deal found 4/24$299

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 25, 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

Fri 5/30

6:00 am-6:03 pm

1 stop12h 03m

San Diego

Sat 5/31

5:43 pm-12:10 am

1 stop6h 27m

$170

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 5/16

12:31 pm-7:54 pm

1 stop7h 23m

San Diego

Sat 5/17

6:58 pm-12:10 am

1 stop5h 12m

$172

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 5/30

7:30 am-10:20 am

Nonstop2h 50m

San Diego

Sun 6/1

7:20 am-10:36 am

Nonstop3h 16m

$177

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 5/21

7:59 pm-10:44 pm

Nonstop2h 45m

San Diego

Tue 5/27

2:32 pm-8:44 am

1 stop18h 12m

$180

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 5/6

6:00 am-12:23 pm

1 stop6h 23m

San Diego

Wed 5/7

6:25 am-11:49 pm

1 stop17h 24m

$181

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 6/5

1:44 pm-4:30 pm

Nonstop2h 46m

San Diego

Sun 6/8

6:15 am-9:24 am

Nonstop3h 09m

$187

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 6/11

7:20 am-12:28 pm

1 stop5h 08m

San Diego

Mon 9/22

1:58 pm-8:54 pm

1 stop6h 56m

$203

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 9/8

11:51 am-5:47 pm

1 stop5h 56m

San Diego

Sat 9/13

1:26 pm-7:47 pm

1 stop6h 21m

$284

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 6/8

6:15 am-11:25 am

1 stop5h 10m

San Diego

Fri 6/13

7:55 pm-1:25 am

1 stop5h 30m

$299

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 6/2

6:55 pm-11:10 pm

1 stop4h 15m

$84

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 18 results
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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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-San Diego flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Seattle-San Diego flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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.

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
Airports
SEA

Use SEA Spot Saver for free security screening appointments to reduce wait times. Reserve online a few days before your flight.

Read more about SEAby Brandon Schultz
SAN

Take the free San Diego Flyer shuttle between SAN and Old Town Transit Center. It's a convenient, wallet-friendly option every 20-30 minutes.

Read more about SANby Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

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 April 18, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to San Diego, you should look to book at least 54 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 April 25, 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 March 30, 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 April 25, 2025.

The most flights from SEA to SAN are scheduled on a Thursday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 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 April 25, 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

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
8.0
Very good

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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.
  • What airports do I use to fly from Seattle to San Diego?

    Booking a flight from Seattle/Tacoma Intl (SEA) to San Diego (SAN) is your only option if you wish to fly from Seattle to San Diego. On a typical day, there are 38 flights from Seattle/Tacoma Intl to San Diego, all of which are around 2h 42m for a nonstop flight. You can also purchase a plane ticket from 9 airlines when you book a flight from Seattle/Tacoma Intl to San Diego.

  • How popular is this Seattle to San Diego flight route?

  • What are the cheapest airlines flying from Seattle to San Diego round-trip?

    According to our current data, Spirit Airlines ($170), Alaska Airlines ($177), and Frontier ($181) offers the cheapest pricing from Seattle to San Diego. You may be able to fly from Seattle to San Diego for 34% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Seattle to San Diego one-way?

    One-way options have recently been found by users for as low as $84 on Southwest. Other airlines that offer cheap prices include Spirit Airlines from $86 and Frontier from $87 one-way.

  • What are the most reliable airlines from Seattle to San Diego?

    The top 3 most reliable airlines when flying from Seattle to San Diego are Sun Country Air (100%), China Airlines (94%) and LATAM Airlines (94%).

  • What are the cheapest flights from Seattle to San Diego?

    On average you can expect to pay $391 for a flight from Seattle to San Diego. The cheapest flight overall is $88 while the most popular route, (Seattle/Tacoma Intl - San Diego) is currently priced at $91.

  • Can I find deals for flights from Seattle to San Diego that include hotel bookings?

    Yes. In addition to deals on Seattle to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Diego.

  • Can I find deals for business class flights from Seattle to San Diego?

    Yes. Cheapflights offers flight deals from Seattle to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$79Average$161FlexibilityNo cancel feeOn-time65%
FrontierCheapest$101Average$202FlexibilityNo cancel feeOn-time62%
DeltaCheapest$117Average$252FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$128Average$305FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$141Average$306FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$173Average$343FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$176Average$332FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$196Average$431FlexibilityNo cancel feeOn-time63%

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