Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to San Diego from £72

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
15 Feb — 22 Feb1
1 adult

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 10 February 2025.

Round-trip from

£128

One-way from

£72

Popular in

December

Cheapest in

September

Average price

£227
Spirit Airlines
  • Spirit Airlines
  • 5/3-11/3
  • 5 total stops
  • 31h 32m total
  • Seattle to San Diego
Delta
  • Delta
  • 11/3
  • Nonstop
  • 2h 50m total
  • Seattle to San Diego
Highest demand for flights based on searches. 2% potential increase in price (£4 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Average for round-trip flights in February 2025

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 10 February 2025.

Thu 23/1007:00SEA - SAN
Nonstop2h 52mAlaska Airlines
Sat 1/1120:50SAN - SEA
Nonstop2h 56mAlaska Airlines
Deal found 9/2£118
Wed 5/319:57SEA - SAN
3 stops18h 45mSpirit Airlines
Tue 11/306:15SAN - SEA
2 stops12h 47mSpirit Airlines
Deal found 9/2£128
Wed 5/306:25SEA - SAN
Nonstop2h 46mHawaiian Airlines
Tue 11/307:00SAN - SEA
Nonstop3h 11mHawaiian Airlines
Deal found 10/2£131
Tue 11/311:40SEA - SAN
Nonstop2h 56mDelta
Tue 18/315:35SAN - SEA
Nonstop3h 08mDelta
Deal found 9/2£143
Wed 5/309:20SEA - SAN
2 stops10h 33mUnited Airlines
Sat 8/319:27SAN - SEA
1 stop5h 28mUnited Airlines
Deal found 10/2£171
Tue 8/417:10SEA - SAN
1 stop4h 20mSouthwest
Fri 11/415:00SAN - SEA
2 stops7h 30mSouthwest
Deal found 9/2£256

Find flights from Seattle to San Diego within your budget

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 10 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 5/3

19:57-14:42

3 stops18h 45m

San Diego

Tue 11/3

06:15-19:02

2 stops12h 47m

£128

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 5/3

06:25-09:11

Nonstop2h 46m

San Diego

Tue 11/3

07:00-10:11

Nonstop3h 11m

£131

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 11/3

11:40-14:36

Nonstop2h 56m

San Diego

Tue 18/3

15:35-18:43

Nonstop3h 08m

£143

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 11/3

13:49-16:34

Nonstop2h 45m

San Diego

Sat 15/3

07:00-10:11

Nonstop3h 11m

£151

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 5/3

09:20-19:53

2 stops10h 33m

San Diego

Sat 8/3

19:27-00:55

1 stop5h 28m

£171

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 8/4

17:10-21:30

1 stop4h 20m

San Diego

Fri 11/4

15:00-22:30

2 stops7h 30m

£256

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 11/3

19:30-22:20

Nonstop2h 50m

£72

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 6/5

09:00-13:51

1 stop4h 51m

£79

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 3/3

09:20-19:53

2 stops10h 33m

£92

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 6/4

21:15-23:59

Nonstop2h 44m

£132

Flights are sorted by cheapest return flights first.

Deals found on 9/2

Showing 1-10 of 11 results
1
2

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.

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 return flight from Seattle to San Diego. Price data was last updated on 7 February 2025.

The best time to book flights from Seattle to San Diego is 54 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, January is the cheapest month in which you can book a flight from Seattle to San Diego (average of £585). Flying from Seattle to San Diego in July is currently the most expensive (average of £920). 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 February 2025.

It’s optimal to fly from Seattle to San Diego at midday. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight in the morning.

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 10 February 2025.

The most flights from SEA to SAN are scheduled on a Wednesday (52 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (24 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 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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 February 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Seattle to San Diego to help guide your decision. 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.

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

8.0
Very Good

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

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?

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

    Currently priced at £128, Spirit Airlines will fly you from Seattle to San Diego and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and Delta - these airlines can fly you to your destination from £131 and £143, respectively. Spirit Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 £72 on Delta. Other airlines that offer cheap prices include Alaska Airlines from £79 and Hawaiian Airlines from £80 one-way.

  • 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 (92%), ITA Airways (90%) or British Airways (88%) 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, January is the cheapest month in which you can book a flight from Seattle to San Diego (average of £585). Flying from Seattle to San Diego in July is currently the most expensive (average of £920). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
El Cajon

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers 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?

When you search for this flight from Seattle to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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.