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Cheap flights from Seattle to San Diego from £59

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
27 Jan — 3 Feb1
1 adult
1 adult, Economy, 0 bags

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 December 2025.

Tue 30/1215:20SEA - SAN
Nonstop2h 45mDelta
Mon 12/107:00SAN - SEA
Nonstop3h 15mDelta
Deal found 26/12£409
Wed 31/1211:35SEA - SAN
Nonstop2h 54mDelta
Thu 15/117:35SAN - SEA
Nonstop3h 13mDelta
Deal found 26/12£428
Sat 27/1217:15SEA - SAN
1 stop6h 10mSouthwest
Sun 11/115:10SAN - SEA
1 stop7h 40mSouthwest
Deal found 25/12£447
Fri 26/1219:55SEA - SAN
Nonstop2h 50mAlaska Airlines
Sun 11/119:03SAN - SEA
Nonstop3h 12mAlaska Airlines
Deal found 25/12£449
Thu 25/1221:15SEA - SAN
1 stop13h 22mAlaska Airlines
Sun 11/121:59SAN - SEA
1 stop12h 54mAlaska Airlines
Deal found 25/12£453
Mon 29/1219:12SEA - SAN
1 stop5h 03mUnited Airlines
Fri 9/111:08SAN - SEA
2 stops10h 04mUnited Airlines
Deal found 26/12£455
Fri 26/1220:55SEA - SAN
2 stops15h 05mSouthwest
Sun 11/113:30SAN - SEA
1 stop5h 00mSouthwest
Deal found 26/12£455
Sat 27/1208:50SEA - SAN
2 stops9h 25mSouthwest
Sat 10/112:50SAN - SEA
2 stops7h 20mSouthwest
Deal found 25/12£477
Sat 27/1213:43SEA - SAN
Nonstop2h 48mAlaska Airlines
Sat 10/109:37SAN - SEA
Nonstop3h 14mAlaska Airlines
Deal found 25/12£479

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 December 2025.

Round-trip from

£88

One-way from

£59

Popular in

December

Cheapest in

September

Average price

£283
Delta
  • Delta
  • 10/2-19/2
  • Nonstop
  • 6h 08m total
  • Seattle to San Diego
Search Deals
Delta
  • Delta
  • 24/1
  • Nonstop
  • 2h 44m total
  • Seattle to San Diego
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 28 December 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

Tue 10/2

07:10-10:02

Nonstop2h 52m

San Diego

Thu 19/2

07:20-10:36

Nonstop3h 16m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 20/1

07:15-10:07

Nonstop2h 52m

San Diego

Wed 28/1

16:01-19:11

Nonstop3h 10m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 29/1

19:55-22:42

Nonstop2h 47m

San Diego

Thu 5/2

13:45-17:00

Nonstop3h 15m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 21/1

10:32-13:19

Nonstop2h 47m

San Diego

Tue 27/1

19:03-22:15

Nonstop3h 12m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 10/2

15:21-18:00

Nonstop2h 39m

San Diego

Tue 17/2

07:20-10:36

Nonstop3h 16m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 26/2

19:35-22:20

Nonstop2h 45m

San Diego

Thu 5/3

15:25-18:40

Nonstop3h 15m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 26/2

11:40-14:29

Nonstop2h 49m

San Diego

Mon 2/3

07:20-10:36

Nonstop3h 16m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 27/2

11:40-14:29

Nonstop2h 49m

San Diego

Wed 4/3

18:45-21:59

Nonstop3h 14m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 24/2

15:15-17:50

Nonstop2h 35m

San Diego

Thu 5/3

13:40-16:55

Nonstop3h 15m

£88

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 18/1

10:00-12:48

Nonstop2h 48m

San Diego

Wed 28/1

11:00-14:17

Nonstop3h 17m

£88

Flights are sorted by cheapest return flights first.

Deals found on 25/12

Showing 1-10 of 22 results
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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 return 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 return flight from Seattle to San Diego. Price data was last updated on 26 December 2025.

The best time to book flights from Seattle to San Diego is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £41). Flying from Seattle to San Diego in July is currently the most expensive (average of £90). 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 December 2025.

It’s optimal to fly from Seattle to San Diego at midday. By choosing this option you can save up to 67% on the cost of your flight, compared to a flight in the morning.

How much does it cost for a return flight from Seattle to San Diego?

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.

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

    This flight path from Seattle/Tacoma Intl to San Diego was viewed by 5 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Departing from Seattle to San Diego will take you 2h 52m. Seattle and San Diego are separated by a distance of 1051 mi. Most flights are nonstop.

  • 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 Horizon Air (100%), Air France (95%) or Virgin Atlantic (92%) as they are the most reliable in getting you off to your destination on time.

  • 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 holiday 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 £41). Flying from Seattle to San Diego in July is currently the most expensive (average of £90). 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
Coronado
El Cajon

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

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to San Diego for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to San Diego flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Seattle to San Diego flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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