HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$69+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Mar 3 — Mar 101
Mon 3/3
Mon 3/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

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 February 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$147
(CheapOair)

One-way from

$69
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$291

Good round-trip deal

$200 or less

Good one-way deal

$104 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Diego flights.
Search Deals
From Seattle/Tacoma Intl to San Diego
Search Deals
One-way flight from Seattle/Tacoma Intl to San Diego
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Diego.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Diego.
Search Deals

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 February 26, 2025.

This CheapOair deal was found by Cheapflights users on 2/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/249:48 amSEA - SAN
1 stop21h 28mSpirit Airlines
Thu 3/276:15 amSAN - SEA
1 stop26h 28mSpirit Airlines
Deal found 2/26$147
This Expedia deal was found by Cheapflights users on 2/24. 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.
Tue 4/153:57 pmSEA - SAN
Nonstop2h 47mMultiple Airlines
Fri 4/186:15 amSAN - SEA
1 stop5h 20mMultiple Airlines
Deal found 2/24$164
This Delta deal was found by Cheapflights users on 2/26. 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.
Tue 3/257:15 amSEA - SAN
Nonstop2h 54mDelta
Wed 3/2611:05 amSAN - SEA
Nonstop3h 07mDelta
Deal found 2/26$177
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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.
Tue 3/186:25 amSEA - SAN
Nonstop2h 46mAlaska Airlines
Wed 3/266:15 amSAN - SEA
1 stop15h 57mAlaska Airlines
Deal found 2/25$185
This Hawaiian Airlines deal was found by Cheapflights users on 2/26. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/149:15 pmSEA - SAN
Nonstop2h 44mHawaiian Airlines
Fri 4/186:15 amSAN - SEA
Nonstop3h 10mHawaiian Airlines
Deal found 2/26$237
This Cheapflightsfares deal was found by Cheapflights users on 2/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/145:08 pmSEA - SAN
1 stop7h 01mFrontier
Mon 6/162:37 pmSAN - SEA
1 stop5h 15mFrontier
Deal found 2/25$241
This Southwest deal was found by Cheapflights users on 2/25. 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.
Wed 4/99:15 amSEA - SAN
1 stop5h 10mSouthwest
Mon 4/143:00 pmSAN - SEA
2 stops7h 30mSouthwest
Deal found 2/25$253
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/167:33 pmSEA - SAN
1 stop4h 50mUnited Airlines
Mon 5/197:40 pmSAN - SEA
1 stop5h 19mUnited Airlines
Deal found 2/25$278

Find flights from Seattle to San Diego within your budget

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 February 26, 2025.

Fly from

Seattle

Fly to

San Diego

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 3/24

9:48 am-7:16 am

1 stop21h 28m

San Diego

Thu 3/27

6:15 am-8:43 am

1 stop26h 28m

$147

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 4/16

9:06 pm-10:25 am

1 stop13h 19m

San Diego

Wed 4/23

7:00 am-10:08 am

Nonstop3h 08m

$157

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 4/8

7:15 am-10:07 am

Nonstop2h 52m

San Diego

Tue 4/8

6:58 pm-10:14 pm

Nonstop3h 16m

$177

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 3/19

3:57 pm-6:44 pm

Nonstop2h 47m

San Diego

Wed 3/26

1:39 pm-10:12 pm

1 stop8h 33m

$185

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 4/6

7:51 pm-7:45 am

1 stop11h 54m

San Diego

Sat 4/26

1:10 pm-12:44 am

1 stop11h 34m

$244

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 3/26

7:54 pm-10:44 pm

Nonstop2h 50m

San Diego

Mon 3/31

6:15 am-9:25 am

Nonstop3h 10m

$252

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 4/9

9:15 am-2:25 pm

1 stop5h 10m

San Diego

Mon 4/14

3:00 pm-10:30 pm

2 stops7h 30m

$253

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 5/16

7:33 pm-12:23 am

1 stop4h 50m

San Diego

Mon 5/19

7:40 pm-12:59 am

1 stop5h 19m

$278

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 4/24

9:06 pm-10:25 am

1 stop13h 19m

$69

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 4/1

7:54 pm-10:44 pm

Nonstop2h 50m

$84

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 17 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 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 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.

The best insider tips for Seattle to San Diego flights

Find out what our experts recommend to make the most of your Seattle to San Diego trip
Airlines
Delta

Delta offers free Wi-Fi for SkyMiles members, perfect for staying connected during flights.


Delta's Comfort+ seats provide extra legroom and early boarding, enhancing short-haul comfort.

Read more about Deltaby Harriet Baskas
Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, ideal for a short flight.


Alaska's Wi-Fi is a flat fee, great for staying productive on short flights.

Read more about Alaska Airlinesby Robert Schrader
Airports
SEA

Use SEA Spot Saver to book security screening appointments in advance, reducing wait times for non-expedited passengers.

Read more about SEAby Brandon Schultz
SAN

For a budget-friendly option, take the free San Diego Flyer shuttle to the Old Town Transit Center from SAN.

Read more about SANby Blane Bachelor
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Delta

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
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

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.

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.

Travel insights for flights from Seattle to San Diego

Get recent, data-driven insights about flights from Seattle to San Diego including ideal travel times, pricing trends, and more.

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 February 25, 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 February 26, 2025.

It’s optimal to fly from Seattle to San Diego in the evening. By choosing this option you can save up to 21% 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 February 23, 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 February 26, 2025.

The most flights from SEA to SAN are scheduled on a Monday (45 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 February 26, 2025.
Read through reviews of airlines operating flights from Seattle to San Diego, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,369 reviews

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,369 reviews
Southwest
8.1
Very good
4,369 reviews

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,717 reviews
Southwest
8.1
Very good
4,369 reviews

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,151 reviews
Southwest
8.1
Very good
4,369 reviews

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines
7.9
Good
2,316 reviews
Southwest
8.1
Very good
4,369 reviews

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,732 reviews
Southwest
8.1
Very good
4,369 reviews

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 33 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?

    The Seattle/Tacoma Intl to San Diego flight path was viewed by 59 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    According to our current data, Spirit Airlines ($147), Delta ($177), and Alaska Airlines ($185) offers the cheapest pricing from Seattle to San Diego. You may be able to fly from Seattle to San Diego for 43% 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 $69 on Spirit Airlines. Other airlines that offer cheap prices include Alaska Airlines from $84 and Delta from $89 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 China Airlines (86%), LATAM Airlines (86%) and Air France (85%).

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

    On average you can expect to pay $422 for a flight from Seattle to San Diego. The cheapest flight overall is $85 while the most popular route, (Seattle/Tacoma Intl - San Diego) is currently priced at $85.

  • 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
Borrego Springs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Los Angeles flights
Seattle to Las Vegas flights
Seattle to San Francisco flights
Seattle to Santa Ana flights
Seattle to Ontario flights
Seattle to Burbank flights
Portland to Los Angeles flights
Seattle to Palm Springs flights
Portland to Las Vegas flights
Seattle to San Jose flights
Everett to Las Vegas flights
Portland to San Diego flights
Seattle to Oakland flights
Everett to Los Angeles flights
Portland to San Francisco flights
Seattle to Sacramento flights
Portland to Burbank flights
Portland to Santa Ana flights
Everett to San Diego flights
Seattle to Reno flights
Portland to Ontario flights
Everett to Santa Ana flights
Portland to Palm Springs flights
Everett to San Francisco flights
Portland to Oakland flights
Portland to San Jose flights
Portland to Sacramento flights
Seattle to Fresno flights
Seattle to Santa Barbara flights
Spokane to Las Vegas flights
Spokane to San Diego flights
Portland to Reno flights
Seattle to Long Beach flights
Seattle to San Luis Obispo flights
Spokane to Los Angeles flights
Seattle to Santa Rosa flights
Pasco to Los Angeles flights
Pasco to Las Vegas flights
Bellingham to Las Vegas flights
Seattle to Monterey flights
Spokane to San Francisco flights
Portland to Santa Barbara flights
Spokane to Palm Springs flights
Portland to Santa Rosa flights
Portland to Fresno flights
Everett to San Jose flights
Portland to San Luis Obispo flights
Portland to Long Beach flights
Pasco to San Francisco flights

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 February 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$79Average$168FlexibilityNo cancel feeOn-time65%
FrontierCheapest$97Average$193FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$104Average$307FlexibilityNo cancel feeOn-time85%
DeltaCheapest$117Average$258FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$143Average$307FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$173Average$396FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$176Average$332FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$196Average$431FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.