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Cheap flights from San Diego to Seattle from C$ 105

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 27/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
26 feb. — 5 mar.1
1 adult

The best prices from San Diego to Seattle/Tacoma Intl are usually found in January or October, booked 55 days in advance, depart on a Monday or Wednesday and return on a Tuesday

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 21 febrero 2025.

Round-trip from

C$ 190

One-way from

C$ 105

Popular in

July

Cheapest in

January

Average price

C$ 364

Good one-way deal

C$ 156 or less
Hawaiian Airlines
  • Hawaiian Airlines
  • 18/3-25/3
  • Nonstop
  • 5h 58m total
  • San Diego to Seattle
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Southwest
  • Southwest
  • 27/3
  • 1 total stop
  • 4h 20m total
  • San Diego to Seattle
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 12 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a one-way flight from San Diego to Seattle/Tacoma Intl.
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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 21 febrero 2025.

mar. 18/37:00 a.m.SAN - SEA
Nonstop3h 11mHawaiian Airlines
mar. 25/35:59 p.m.SEA - SAN
Nonstop2h 47mHawaiian Airlines
Deal found 20/2C$ 190
mar. 15/411:05 a.m.SAN - SEA
Nonstop3h 13mDelta
mié. 23/47:15 a.m.SEA - SAN
Nonstop2h 52mDelta
Deal found 19/2C$ 195
mié. 2/47:00 a.m.SAN - SEA
Nonstop3h 12mAlaska Airlines
mié. 2/412:34 p.m.SEA - SAN
1 stop5h 33mAlaska Airlines
Deal found 19/2C$ 214
lun. 17/36:30 p.m.SAN - SEA
1 stop4h 25mSouthwest
jue. 20/37:00 a.m.SEA - SAN
1 stop7h 20mSouthwest
Deal found 20/2C$ 216
jue. 15/56:15 a.m.SAN - SEA
1 stop7h 45mUnited Airlines
lun. 19/57:33 p.m.SEA - SAN
1 stop4h 50mUnited Airlines
Deal found 19/2C$ 281
dom. 23/22:28 p.m.SAN - SEA
1 stop19h 55mFrontier
mar. 25/23:48 p.m.SEA - SAN
1 stop27h 30mFrontier
Deal found 20/2C$ 520

Find flights from San Diego to Seattle within your budget

Customize 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 629,999 searches. Data last updated 21 febrero 2025.

Fly from

San Diego

Fly to

Seattle

Route

Depart

Return

Price

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mar. 18/3

7:00 a.m.-10:11 a.m.

Nonstop3h 11m

Seattle/Tacoma Intl

mar. 25/3

5:59 p.m.-8:46 p.m.

Nonstop2h 47m

C$ 190

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mar. 15/4

3:35 p.m.-6:47 p.m.

Nonstop3h 12m

Seattle/Tacoma Intl

vie. 18/4

11:40 a.m.-2:33 p.m.

Nonstop2h 53m

C$ 195

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mié. 2/4

7:00 a.m.-10:12 a.m.

Nonstop3h 12m

Seattle/Tacoma Intl

mié. 2/4

12:34 p.m.-6:07 p.m.

1 stop5h 33m

C$ 214

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

lun. 17/3

6:30 p.m.-10:55 p.m.

1 stop4h 25m

Seattle/Tacoma Intl

jue. 20/3

7:00 a.m.-2:20 p.m.

1 stop7h 20m

C$ 216

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

jue. 15/5

6:15 a.m.-2:00 p.m.

1 stop7h 45m

Seattle/Tacoma Intl

lun. 19/5

7:33 p.m.-12:23 a.m.

1 stop4h 50m

C$ 281

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

jue. 27/3

7:30 p.m.-11:50 p.m.

1 stop4h 20m

C$ 105

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mar. 20/5

7:00 a.m.-10:11 a.m.

Nonstop3h 11m

C$ 112

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mar. 18/3

10:24 a.m.-4:59 p.m.

1 stop6h 35m

C$ 115

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

mar. 1/4

10:16 a.m.-6:37 p.m.

2 stops8h 21m

C$ 134

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

vie. 14/3

6:15 a.m.-12:16 p.m.

1 stop6h 01m

C$ 139

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 11 results
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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 round-trip 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 round-trip flight from San Diego to Seattle. Price data was last updated on 14 February 2025.

The price you pay for your flight from San Diego to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 262). Flying from San Diego to Seattle in April is currently the most expensive (average of C$ 382). 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 21 febrero 2025.

A simple way to save on the total cost of your ticket is to fly from San Diego to Seattle at noon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the morning.

Weekly flight availability from San Diego to Seattle

Explore weekly flight availability from San Diego to Seattle. 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 febrero 2025.

The most flights from SAN to SEA are scheduled on a Friday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

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 mm 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 21 febrero 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from San Diego to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews
Check prices

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

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
4,411 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

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
9,692 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

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
8,220 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

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.

Hawaiian Airlines
7.9
Good
2,316 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

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
8,766 reviews
Southwest
8.1
Very good
4,411 reviews
Check prices

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

Reviews

1 / 20

10.0
Excellent

Tim,Jul 2024

DEN - SEA

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?

    Flights from San Diego to Seattle/Tacoma Intl have been viewed 2 times in the past calendar month.

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

    According to our current data, Hawaiian Airlines (C$ 190), Delta (C$ 195), and Alaska Airlines (C$ 214) offers the cheapest pricing from San Diego to Seattle. Hawaiian Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at C$ 105. Delta flights start at C$ 112 while deals on Alaska Airlines start at C$ 115 one-way.

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

    Consider SkyWest Airlines (100%), Aeromexico (100%) or ITA Airways (100%) when booking your flight. These represent the most reliable airlines when flying from San Diego to Seattle.

  • What are the cheapest flights from San Diego to Seattle?

    Looking at all options, your cheapest flight can be booked for C$ 111. While the most popular route (San Diego - Seattle/Tacoma Intl) can be booked for C$ 560 on average our data indicates C$ 168 when flying from San Diego to Seattle.

  • 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 vacation 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 C$ 262). Flying from San Diego to Seattle in April is currently the most expensive (average of C$ 382). 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
SeaTac
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
Olympia
Lynnwood

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