Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from San Diego to Seattle from £54

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
24 Dec — 31 Dec1
1 adult

Cheap flight deals from San Diego to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Seattle (SEA). 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 19 December 2024.

Round-trip from

£86

One-way from

£54

Popular in

July

Cheapest in

January

Average price

£218
Spirit Airlines
  • Spirit Airlines
  • 8/1-15/1
  • 1 total stop
  • 8h 52m total
  • San Diego to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 18/3
  • Nonstop
  • 3h 08m total
  • San Diego to Seattle
Search Deals
High demand for flights, 17% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from San Diego to Seattle

Cheapest flights from San Diego to Seattle
Explore the most affordable flight options available from San Diego to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 December 2024.

Thu 26/1219:00SAN - SEA
Nonstop3h 25mDelta
Wed 15/117:45SEA - SAN
Nonstop2h 46mDelta
Deal found 18/12£250
Thu 26/1211:25SAN - SEA
1 stop5h 11mAlaska Airlines
Wed 15/121:16SEA - SAN
Nonstop2h 43mAlaska Airlines
Deal found 18/12£257
Thu 19/1206:15SAN - SEA
1 stop6h 26mUnited Airlines
Sun 12/117:25SEA - SAN
1 stop6h 33mUnited Airlines
Deal found 18/12£375
Fri 20/1211:25SAN - SEA
1 stop4h 45mSouthwest
Sat 21/1221:40SEA - SAN
1 stop9h 30mSouthwest
Deal found 18/12£494

Find flights from San Diego to Seattle within your budget

Customise your flight search to find flights from San Diego to Seattle 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 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Wed 8/1

18:52-21:59

Nonstop3h 07m

Seattle/Tacoma Intl

Wed 15/1

07:10-12:55

1 stop5h 45m

£86

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Wed 23/4

06:15-09:11

Nonstop2h 56m

Seattle/Tacoma Intl

Sat 3/5

17:50-20:42

Nonstop2h 52m

£108

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Thu 24/4

15:20-18:24

Nonstop3h 04m

Seattle/Tacoma Intl

Sun 11/5

09:45-12:37

Nonstop2h 52m

£124

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Mon 10/3

18:04-01:06

1 stop7h 02m

Seattle/Tacoma Intl

Thu 13/3

05:00-10:04

1 stop5h 04m

£136

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sun 29/12

17:35-00:10

1 stop6h 35m

Seattle/Tacoma Intl

Thu 2/1

05:40-11:40

1 stop6h 00m

£375

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Tue 18/3

06:15-09:23

Nonstop3h 08m

£54

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Tue 18/3

18:04-01:06

1 stop7h 02m

£58

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sun 16/2

07:20-10:35

Nonstop3h 15m

£86

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sun 5/1

17:35-00:10

1 stop6h 35m

£144

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 3/1

06:15-13:11

1 stop6h 56m

£169

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Best time to book a flight from San Diego to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from San Diego 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 San Diego to Seattle

Get recent, data-driven insights about flights from San Diego to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Diego to Seattle?

Use this chart to determine the optimal time to book a return flight from San Diego to Seattle. Price data was last updated on 13 December 2024.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Seattle. 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 San Diego to Seattle?

Currently, January is the cheapest month in which you can book a flight from San Diego to Seattle (average of £622). Flying from San Diego to Seattle in July is currently the most expensive (average of £845). 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 SAN to SEA?

Find hourly flight availability from San Diego to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 December 2024.

When flying from San Diego to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 19 December 2024.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from San Diego to Seattle. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,836 reviews
Check prices

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Southwest
8.1
Very Good
4,836 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Alaska Airlines
8.0
Very Good
9,551 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Delta
8.0
Very Good
8,604 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

United Airlines
7.4
Good
9,055 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Spirit Airlines
6.3
Okay
8,120 reviews
Southwest
8.1
Very Good
4,836 reviews
Check prices

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Seattle. 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 San Diego to Seattle flight route?

    Within the past month, 7 users have taken a look at flights from San Diego to Seattle/Tacoma Intl.

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

    Our cheapest airline available from San Diego to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as £108 on this airline. Additional options worth looking into are Delta and United Airlines, starting at £128 and £136 round-trip. You may be able to fly from San Diego to Seattle for 40% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Diego to Seattle one-way?

    £54 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from £58 and £62, respectively.

  • What are the most reliable airlines from San Diego to Seattle?

    The top 3 most reliable airlines when flying from San Diego to Seattle are Aeromexico (100%), ITA Airways (100%) and Air France (95%).

  • Can I find deals for flights from San Diego to Seattle that include hotel bookings?

    Yes. In addition to deals on San Diego to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Seattle.

  • Can I find deals for business class flights from San Diego to Seattle?

    Yes. Cheapflights offers flight deals from San Diego to Seattle 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 San Diego to Seattle?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Seattle (average of £622). Flying from San Diego to Seattle in July is currently the most expensive (average of £845). 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

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.

Alternative routes for San Diego to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Seattle flights
Los Angeles to Portland flights
San Francisco to Seattle flights
San Francisco to Portland flights
San Diego to Portland flights
San Jose to Seattle flights

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 San Diego to Seattle?

Cheapflights makes it easy to find San Diego to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from San Diego to Seattle 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 San Diego to Seattle with no change fees?

Yes, we can. To see specific flights from San Diego to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from San Diego to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.