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Cheap flights from Seattle to San Diego from £55

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
26 Dec — 2 Jan1
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 December 2024.

Round-trip from

£102

One-way from

£55

Popular in

December

Cheapest in

January

Average price

£272
Alaska Airlines
  • Alaska Airlines
  • 14/1-15/1
  • Nonstop
  • 5h 57m total
  • Seattle to San Diego
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Delta
  • Delta
  • 15/1
  • Nonstop
  • 2h 54m total
  • Seattle to San Diego
Search Deals
High demand for flights, 3% potential price rise
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Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in December 2024
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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 December 2024.

Tue 31/1217:30SEA - SAN
Nonstop2h 54mDelta
Tue 21/107:20SAN - SEA
Nonstop3h 15mDelta
Deal found 20/12£253
Tue 31/1218:57SEA - SAN
Nonstop2h 48mAlaska Airlines
Tue 21/108:00SAN - SEA
1 stop4h 46mAlaska Airlines
Deal found 20/12£260
Sat 21/1216:30SEA - SAN
1 stop4h 54mUnited Airlines
Sat 11/107:00SAN - SEA
1 stop6h 55mUnited Airlines
Deal found 20/12£316
Tue 24/1218:34SEA - SAN
1 stop22h 12mSun Country Air
Sun 29/1217:30SAN - SEA
1 stop15h 23mSun Country Air
Deal found 20/12£475
Sun 22/1205:40SEA - SAN
1 stop6h 00mSouthwest
Sun 29/1206:35SAN - SEA
1 stop6h 00mSouthwest
Deal found 20/12£480

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 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 14/1

07:00-09:48

Nonstop2h 48m

San Diego

Wed 15/1

09:35-12:44

Nonstop3h 09m

£102

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 14/1

17:55-15:26

3 stops21h 31m

San Diego

Wed 15/1

19:26-00:19

1 stop4h 53m

£115

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 25/1

09:35-12:30

Nonstop2h 55m

San Diego

Sun 26/1

07:20-10:35

Nonstop3h 15m

£117

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 1/3

14:52-23:58

2 stops9h 06m

San Diego

Sat 8/3

18:04-01:06

1 stop7h 02m

£133

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 25/1

11:55-20:00

2 stops8h 05m

San Diego

Sun 26/1

07:00-11:15

1 stop4h 15m

£276

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 15/1

07:30-10:24

Nonstop2h 54m

£55

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 21/1

11:20-18:34

1 stop7h 14m

£62

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 22/1

15:25-23:58

2 stops8h 33m

£74

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 21/2

06:55-14:00

2 stops7h 05m

£214

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 26/12

23:59-17:06

1 stop17h 07m

£322

Flights are sorted by cheapest return flights first.

Deals found on 20/12

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 13 December 2024.

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 December 2024.

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 December 2024.

The most flights from SEA to SAN are scheduled on a Friday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 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 December 2024.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Southwest 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
4,814 reviews
Check prices

Entertainment

7.7

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

Southwest
8.1
Very Good
4,814 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Entertainment

7.7

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

Alaska Airlines
8.0
Very Good
9,540 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Entertainment

7.7

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

Delta
8.0
Very Good
8,597 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Entertainment

7.7

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

United Airlines
7.4
Good
9,039 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Entertainment

7.7

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

Sun Country Air
7.0
Good
395 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Entertainment

7.7

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Food

7.2

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 £102, Alaska Airlines will fly you from Seattle to San Diego and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Delta - these airlines can fly you to your destination from £115 and £117, respectively. Alaska Airlines is 49% 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 £55 on Delta. Other airlines that offer cheap prices include Alaska Airlines from £62 and United Airlines from £74 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%), China Airlines (89%) or LATAM Airlines (89%) 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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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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