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Cheap flights from Seattle to San Diego from £65

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 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
26 Jan — 2 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 21 January 2025.

Round-trip from

£112

One-way from

£65

Popular in

December

Cheapest in

September

Average price

£176
Delta
  • Delta
  • 14/3-19/3
  • Nonstop
  • 6h 02m total
  • Seattle to San Diego
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Delta
  • Delta
  • 19/2
  • Nonstop
  • 2h 46m total
  • Seattle to San Diego
Search Deals
High demand for flights, 7% potential price rise
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Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in January 2025
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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 21 January 2025.

Fri 14/319:30SEA - SAN
Nonstop2h 52mDelta
Mon 17/307:20SAN - SEA
Nonstop3h 10mDelta
Deal found 21/1£112
Wed 26/206:25SEA - SAN
Nonstop2h 46mAlaska Airlines
Fri 7/306:15SAN - SEA
1 stop6h 01mAlaska Airlines
Deal found 21/1£120
Wed 12/319:57SEA - SAN
2 stops13h 52mSpirit Airlines
Tue 18/317:39SAN - SEA
1 stop15h 04mSpirit Airlines
Deal found 20/1£127
Sat 15/305:00SEA - SAN
1 stop5h 04mUnited Airlines
Tue 18/318:04SAN - SEA
1 stop6h 51mUnited Airlines
Deal found 20/1£140
Tue 8/417:10SEA - SAN
1 stop4h 20mSouthwest
Tue 15/410:00SAN - SEA
1 stop6h 25mSouthwest
Deal found 21/1£140

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 14/3

19:30-22:22

Nonstop2h 52m

San Diego

Wed 19/3

07:20-10:30

Nonstop3h 10m

£112

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 26/2

06:25-09:11

Nonstop2h 46m

San Diego

Fri 7/3

06:15-12:16

1 stop6h 01m

£120

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 12/3

19:57-09:49

2 stops13h 52m

San Diego

Tue 18/3

17:39-08:43

1 stop15h 04m

£127

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 15/3

05:00-10:04

1 stop5h 04m

San Diego

Tue 18/3

18:04-00:55

1 stop6h 51m

£140

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 8/4

17:10-21:30

1 stop4h 20m

San Diego

Tue 15/4

10:00-16:25

1 stop6h 25m

£140

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 19/2

17:45-20:31

Nonstop2h 46m

£65

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 28/3

21:15-23:59

Nonstop2h 44m

£78

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 27/3

05:00-10:04

1 stop5h 04m

£84

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 17/2

06:55-11:25

1 stop4h 30m

£114

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 18/7

23:59-17:19

1 stop17h 20m

£186

Flights are sorted by cheapest return flights first.

Deals found on 20/1

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 17 January 2025.

The best time to book flights from Seattle to San Diego is 80 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 21 January 2025.

It’s optimal to fly from Seattle to San Diego at midday. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the afternoon.

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 21 January 2025.

The most flights from SEA to SAN are scheduled on a Wednesday (56 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (34 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 21 January 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, United 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.
Southwest
8.1
Very Good
4,659 reviews
Check prices

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

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

Southwest
8.1
Very Good
4,659 reviews
Southwest
8.1
Very Good
4,659 reviews
Check prices

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

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

Alaska Airlines
8.0
Very Good
9,706 reviews
Southwest
8.1
Very Good
4,659 reviews
Check prices

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

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

Delta
8.0
Very Good
8,521 reviews
Southwest
8.1
Very Good
4,659 reviews
Check prices

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

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

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very Good
4,659 reviews
Check prices

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

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

Sun Country Air
7.0
Good
386 reviews
Southwest
8.1
Very Good
4,659 reviews
Check prices

Entertainment

7.7

Food

7.2

Overall

8.1

Boarding

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

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?

    This flight path from Seattle/Tacoma Intl to San Diego was viewed by 2 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?

    Currently priced at £112, Delta will fly you from Seattle to San Diego and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and Spirit Airlines - these airlines can fly you to your destination from £120 and £127, respectively. Delta is 46% 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 £65 on Delta. Other airlines that offer cheap prices include Alaska Airlines from £78 and United Airlines from £84 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 (100%), ITA Airways (83%) or Aeromexico (83%) 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

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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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