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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 26/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags
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 Saturday 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 10 March 2026.

Fri 24/46:15 p.m.
SEA
-
SAN
1 stop4h 50m
Southwest
Mon 27/45:25 p.m.
SAN
-
SEA
1 stop5h 10m
Southwest
Deal found 8/3C$ 161
Thu 7/59:40 a.m.
SEA
-
SAN
1 stop4h 15m
Southwest
Tue 12/54:30 p.m.
SAN
-
SEA
2 stops7h 25m
Southwest
Deal found 7/3C$ 163
Tue 21/49:20 a.m.
SEA
-
SAN
2 stops8h 25m
Southwest
Wed 22/42:45 p.m.
SAN
-
SEA
1 stop5h 35m
Southwest
Deal found 8/3C$ 168
Sat 18/41:20 p.m.
SEA
-
SAN
2 stops7h 40m
Southwest
Tue 21/46:30 a.m.
SAN
-
SEA
2 stops6h 55m
Southwest
Deal found 9/3C$ 175
Tue 21/411:40 a.m.
SEA
-
SAN
2 stops6h 45m
Southwest
Sat 2/511:30 a.m.
SAN
-
SEA
1 stop10h 30m
Southwest
Deal found 7/3C$ 176
Thu 7/52:41 p.m.
SEA
-
SAN
Nonstop2h 57m
Alaska Airlines
Thu 7/57:35 p.m.
SAN
-
SEA
Nonstop3h 18m
Alaska Airlines
Deal found 6/3C$ 182
Tue 12/511:29 a.m.
SEA
-
SAN
1 stop4h 47m
Alaska Airlines
Tue 12/56:34 p.m.
SAN
-
SEA
Nonstop3h 11m
Alaska Airlines
Deal found 10/3C$ 185
Tue 31/32:35 p.m.
SEA
-
SAN
Nonstop2h 40m
Southwest
Tue 7/43:00 p.m.
SAN
-
SEA
Nonstop3h 00m
Southwest
Deal found 9/3C$ 186
Tue 31/37:20 a.m.
SEA
-
SAN
Nonstop2h 57m
Delta
Wed 8/47:30 a.m.
SAN
-
SEA
Nonstop3h 10m
Delta
Deal found 9/3C$ 187
Sun 19/47:35 a.m.
SEA
-
SAN
Nonstop2h 59m
Delta
Wed 22/411:40 a.m.
SAN
-
SEA
Nonstop3h 10m
Delta
Deal found 9/3C$ 189
Tue 28/42:50 p.m.
SEA
-
SAN
Nonstop2h 44m
Delta
Wed 29/47:30 a.m.
SAN
-
SEA
Nonstop3h 14m
Delta
Deal found 8/3C$ 190
Tue 28/45:31 p.m.
SEA
-
SAN
1 stop14h 44m
Alaska Airlines
Wed 29/410:51 a.m.
SAN
-
SEA
Nonstop3h 15m
Alaska Airlines
Deal found 9/3C$ 193

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 10 March 2026.

Round-trip from

C$ 161

One-way from

C$ 113

Popular in

December

Cheapest in

January

Average price

C$ 376

Good round-trip deal

C$ 375 or less
Southwest
  • Southwest
  • 24/4-27/4
  • 2 total stops
  • 10h 00m total
  • Seattle to San Diego
Search Deals
Southwest
  • Southwest
  • 26/5
  • Nonstop
  • 2h 55m total
  • Seattle to San Diego
Search Deals
High demand for flights, 1% potential price rise
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 March 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 10 March 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

Price

Cheapest round-trip

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 6/5

11:40 a.m.-6:25 p.m.

2 stops6h 45m

San Diego

Tue 12/5

2:45 p.m.-8:20 p.m.

1 stop5h 35m

C$ 168

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 24/4

7:35 p.m.-10:29 p.m.

Nonstop2h 54m

San Diego

Wed 29/4

3:35 p.m.-6:49 p.m.

Nonstop3h 14m

C$ 186

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 28/4

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

Nonstop2h 59m

San Diego

Wed 29/4

3:35 p.m.-6:49 p.m.

Nonstop3h 14m

C$ 190

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 28/4

8:15 p.m.-4:16 p.m.

1 stop20h 01m

San Diego

Wed 29/4

6:34 p.m.-9:45 p.m.

Nonstop3h 11m

C$ 194

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 30/4

9:40 a.m.-4:05 p.m.

1 stop6h 25m

San Diego

Mon 4/5

6:15 p.m.-10:35 p.m.

1 stop4h 20m

C$ 213

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 19/4

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

Nonstop2h 59m

San Diego

Sun 26/4

6:51 p.m.-10:05 p.m.

Nonstop3h 14m

C$ 240

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 21/4

1:00 p.m.-3:46 p.m.

Nonstop2h 46m

San Diego

Sat 2/5

12:33 p.m.-5:00 p.m.

1 stop4h 27m

C$ 255
Quickest round-trip

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 6/6

3:55 p.m.-6:45 p.m.

Nonstop2h 50m

San Diego

Mon 8/6

2:00 p.m.-4:55 p.m.

Nonstop2h 55m

C$ 313

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 28/4

12:22 p.m.-5:12 p.m.

1 stop4h 50m

San Diego

Wed 29/4

1:20 p.m.-8:57 p.m.

1 stop7h 37m

C$ 319
Cheapest one-way
Quickest one-way

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 15/5

11:05 a.m.-1:50 p.m.

Nonstop2h 45m

C$ 148

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 6 March 2026.

Booking 51 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$ 75). Flying from Seattle to San Diego in July is currently the most expensive (average of C$ 167). 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 10 March 2026.

It’s typically best to fly out from Seattle to San Diego in the afternoon. Doing so could potentially save you 49% on the flight price compared to flying at noon, which is usually more expensive.

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 21 February 2026.

Travelers seeking maximum savings on their Seattle to San Diego flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 10 March 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
12,019 reviews
Check prices

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Alaska Airlines
8.0
Very good
12,019 reviews
Alaska Airlines
8.0
Very good
12,019 reviews
Check prices

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Southwest
8.0
Very good
4,317 reviews
Alaska Airlines
8.0
Very good
12,019 reviews
Check prices

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Delta
7.9
Good
8,277 reviews
Alaska Airlines
8.0
Very good
12,019 reviews
Check prices

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Hawaiian Airlines
7.8
Good
2,837 reviews
Alaska Airlines
8.0
Very good
12,019 reviews
Check prices

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

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 44m on average. When it comes time to book airfare, you have a few options: there are 25 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 26 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 54m. Southwest provides one of the quickest options available for as low as C$ 186. Seattle and San Diego are separated by a distance of 1691 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Delta, at C$ 134, was found to be the cheapest airline from Seattle to San Diego.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Delta is priced at 62% 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%), Japan Airlines (87%) or Delta (80%) 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$ 240. On average you can expect to pay C$ 377. The most popular route, (Seattle/Tacoma Intl - San Diego), can usually be booked for C$ 134.

  • 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$ 75). Flying from Seattle to San Diego in July is currently the most expensive (average of C$ 167). 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

Browse thousands of different options on Cheapflights for your next trip

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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 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 134AverageC$ 267FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 141AverageC$ 388FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Hawaiian AirlinesCheapestC$ 151AverageC$ 400FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
SouthwestCheapestC$ 348AverageC$ 382FlexibilityNo 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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