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Cheap flights from Seattle to San Diego from C$ 113

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 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Diego are usually found in September or January, booked 88 days in advance, depart on a Tuesday or Thursday and return on a Monday

Cheap flight deals from Seattle to San Diego

Enter your travel dates to find the best prices.

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 28 January 2026.

Tue 28/49:53 a.m.
SEA
-
SAN
1 stop6h 02m
Alaska Airlines
Tue 28/46:34 p.m.
SAN
-
SEA
Nonstop3h 11m
Alaska Airlines
Deal found 27/1C$ 220
Sat 7/32:50 p.m.
SEA
-
SAN
Nonstop2h 40m
Southwest
Tue 10/310:45 a.m.
SAN
-
SEA
Nonstop3h 05m
Southwest
Deal found 27/1C$ 230
Sat 7/32:50 p.m.
SEA
-
SAN
Nonstop2h 40m
Southwest
Wed 11/310:45 a.m.
SAN
-
SEA
Nonstop3h 05m
Southwest
Deal found 26/1C$ 234
Sat 14/38:55 p.m.
SEA
-
SAN
Nonstop2h 49m
Alaska Airlines
Tue 24/32:38 p.m.
SAN
-
SEA
Nonstop3h 11m
Alaska Airlines
Deal found 26/1C$ 235
Sat 21/26:59 p.m.
SEA
-
SAN
Nonstop2h 50m
Alaska Airlines
Wed 25/28:26 p.m.
SAN
-
SEA
Nonstop3h 14m
Alaska Airlines
Deal found 25/1C$ 242
Sat 21/27:35 p.m.
SEA
-
SAN
Nonstop2h 45m
Delta
Wed 25/26:45 p.m.
SAN
-
SEA
Nonstop3h 14m
Delta
Deal found 27/1C$ 243
Wed 18/29:30 a.m.
SEA
-
SAN
1 stop7h 15m
Southwest
Wed 25/27:35 a.m.
SAN
-
SEA
1 stop4h 35m
Southwest
Deal found 27/1C$ 246
Thu 26/26:15 a.m.
SEA
-
SAN
1 stop5h 55m
Southwest
Thu 5/310:55 a.m.
SAN
-
SEA
Nonstop3h 05m
Southwest
Deal found 27/1C$ 247
Mon 23/211:30 a.m.
SEA
-
SAN
1 stop6h 55m
Southwest
Tue 24/27:35 a.m.
SAN
-
SEA
1 stop4h 35m
Southwest
Deal found 27/1C$ 250
Sat 14/34:16 p.m.
SEA
-
SAN
1 stop4h 58m
Hawaiian Airlines
Tue 24/310:07 a.m.
SAN
-
SEA
1 stop6h 38m
Hawaiian Airlines
Deal found 26/1C$ 252

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 28 January 2026.

Round-trip from

C$ 220

One-way from

C$ 113

Popular in

December

Cheapest in

September

Average price

C$ 298

Good round-trip deal

C$ 153 or less
Alaska Airlines
  • Alaska Airlines
  • 28/4-28/4
  • 1 total stop
  • 9h 13m total
  • Seattle to San Diego
Search Deals
Southwest
  • Southwest
  • 10/3
  • Nonstop
  • 2h 40m total
  • Seattle to San Diego
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Diego.
Search Deals

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 629,999 searches. Data last updated 28 January 2026.
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 27/2

11:40 a.m.-2:29 p.m.

Nonstop2h 49m

San Diego

Tue 3/3

3:25 p.m.-6:40 p.m.

Nonstop3h 15m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 14/3

7:20 a.m.-10:16 a.m.

Nonstop2h 56m

San Diego

Fri 20/3

7:30 a.m.-10:40 a.m.

Nonstop3h 10m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 13/3

7:35 p.m.-10:27 p.m.

Nonstop2h 52m

San Diego

Mon 16/3

7:30 a.m.-10:40 a.m.

Nonstop3h 10m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 22/4

11:45 a.m.-2:38 p.m.

Nonstop2h 53m

San Diego

Sun 26/4

7:20 a.m.-10:34 a.m.

Nonstop3h 14m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 19/3

7:20 a.m.-10:17 a.m.

Nonstop2h 57m

San Diego

Sat 21/3

6:50 p.m.-10:05 p.m.

Nonstop3h 15m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 18/2

3:15 p.m.-5:50 p.m.

Nonstop2h 35m

San Diego

Wed 25/2

7:20 a.m.-10:36 a.m.

Nonstop3h 16m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 21/2

1:45 p.m.-4:29 p.m.

Nonstop2h 44m

San Diego

Tue 24/2

10:59 a.m.-2:15 p.m.

Nonstop3h 16m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 15/3

7:20 a.m.-10:17 a.m.

Nonstop2h 57m

San Diego

Sat 21/3

6:50 p.m.-10:05 p.m.

Nonstop3h 15m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 23/4

7:35 a.m.-10:34 a.m.

Nonstop2h 59m

San Diego

Mon 27/4

7:20 a.m.-10:34 a.m.

Nonstop3h 14m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 21/2

7:35 p.m.-10:20 p.m.

Nonstop2h 45m

San Diego

Wed 25/2

6:45 p.m.-9:59 p.m.

Nonstop3h 14m

C$ 243

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

Showing 1-10 of 20 results
1
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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 23 January 2026.

Booking 41 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 C$ 77). Flying from Seattle to San Diego in July is currently the most expensive (average of C$ 164). 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 28 January 2026.

It’s typically best to fly out from Seattle to San Diego in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying at noon, which is usually more expensive.

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 28 January 2026.
Read reviews from past customers who have flown Alaska Airlines,Southwest, andDelta from Seattle to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,799 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,799 reviews
Alaska Airlines
8.0
Very good
11,799 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
8.0
Very good
4,268 reviews
Alaska Airlines
8.0
Very good
11,799 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,123 reviews
Alaska Airlines
8.0
Very good
11,799 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,799 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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?

    To fly from Seattle to San Diego, you need to book a flight from Seattle/Tacoma Intl (SEA) to San Diego (SAN). Nonstop flights to San Diego from Seattle/Tacoma Intl take 2h 46m on average. When it comes time to book airfare, you have a few options: there are 31 outbound flights from Seattle/Tacoma Intl to San Diego offered by 4 different airlines.

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

    Flights from Seattle/Tacoma Intl to San Diego have been viewed 33 times in the past calendar month.

  • How long is the flight from Seattle to San Diego?

    A quick flight from Seattle to San Diego can take about 2h 45m. Delta provides one of the quickest options available for as low as C$ 242. Seattle and San Diego are separated by a distance of 1691 km. Generally, flights for this route are direct.

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

    Delta, at C$ 107, was found to be the cheapest airline from Seattle to San Diego.Alternate airlines to your destination round-trip include Hawaiian Airlines and Alaska Airlines. Delta is priced at 70% lower than the current average price of a flight leaving 3 months from now.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to San Diego consider choosing SkyWest Airlines (100%), Horizon Air (100%) or Virgin Atlantic (86%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Seattle to San Diego is C$ 153. On average you can expect to pay C$ 308. The most popular route, (Seattle/Tacoma Intl - San Diego), can usually be booked for C$ 242.

  • 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, June is the cheapest month in which you can book a flight from Seattle to San Diego (average of C$ 77). Flying from Seattle to San Diego in July is currently the most expensive (average of C$ 164). 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

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs

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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.
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Top 4 airlines flying from Seattle to San Diego

Discover the top 4 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 629,999 searches. Data last updated 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 107AverageC$ 269FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Hawaiian AirlinesCheapestC$ 153AverageC$ 403FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Alaska AirlinesCheapestC$ 189AverageC$ 378FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
SouthwestCheapestC$ 350AverageC$ 385FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to San Diego?

Deals for Seattle to San Diego flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Seattle to San Diego?

Cheapflights simply makes it quick and affordable to book flights from Seattle to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to San Diego with no change fees?

Certainly. Search results for flights to San Diego from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to San Diego become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Diego from Seattle today and book when prices fit your budget.

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