How many flights depart from Seattle to San Diego on average per week?

As of September 2025, there are 315 flights per week flying from Seattle to San Diego. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

Which airlines fly to San Diego?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to San Diego from Seattle according to our data. Alaska Airlines is the first choice among our users, with 58% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 6 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

How many flights depart from Seattle to San Diego on average per day?

45 flights are operational daily from Seattle to San Diego as of September 2025. The most popular departure time for this route is 7:00p.m., with 43% of flights per day taking off in the evening.

What is the cheapest airline that flies from Seattle/Tacoma Intl to San Diego?

Southwest, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to San Diego

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

Prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

There are 5 operators available for flights from Seattle/Tacoma Intl Airport to San Diego Airport as of September 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 94 Cheap Flights from Seattle to San Diego in 2025/26

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Find the cheapest flights from Seattle to San Diego

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:15 p.m. - 10:13 p.m.SEA-SAN

2h 58mdirect

6:25 p.m. - 9:32 p.m.SAN-SEA

3h 07mdirect

C$ 238Hawaiian Airlines

Find Deal

Wed, 15 Oct - Tue, 21 Oct

8:10 p.m. - 11:05 p.m.SEA-SAN

2h 55mdirect

1:52 p.m. - 6:50 p.m.SAN-SEA

4h 58m1 stop

C$ 239Hawaiian Airlines

Find Deal

Sat, 11 Oct - Tue, 14 Oct

7:45 p.m. - 10:31 p.m.SEA-SAN

2h 46mdirect

1:40 p.m. - 4:50 p.m.SAN-SEA

3h 10mdirect

C$ 245Delta

Find Deal

Sat, 11 Oct - Sat, 18 Oct

10:15 a.m. - 5:50 p.m.SEA-SAN

7h 35m2 stops

6:45 p.m. - 11:10 p.m.SAN-SEA

4h 25m1 stop

C$ 246Southwest

Find Deal

Sat, 8 Nov - Thu, 13 Nov

3:28 p.m. - 8:49 p.m.SEA-SAN

5h 21m1 stop

11:08 a.m. - 9:15 p.m.SAN-SEA

10h 07m2 stops

C$ 251United Airlines

Find Deal

Sat, 11 Oct - Tue, 14 Oct

7:55 p.m. - 10:47 p.m.SEA-SAN

2h 52mdirect

6:15 a.m. - 9:36 a.m.SAN-SEA

3h 21mdirect

C$ 258Delta

Find Deal

Wed, 19 Nov - Sun, 23 Nov

7:00 a.m. - 12:16 p.m.SEA-SAN

5h 16m1 stop

1:52 p.m. - 6:50 p.m.SAN-SEA

4h 58m1 stop

C$ 264Alaska Airlines

Find Deal

Tue, 14 Oct - Tue, 14 Oct

6:55 a.m. - 11:20 a.m.SEA-SAN

4h 25m1 stop

3:35 p.m. - 10:00 p.m.SAN-SEA

6h 25m2 stops

C$ 265Southwest

Find Deal

Tue, 14 Oct - Tue, 14 Oct

7:30 p.m. - 12:15 a.m.SEA-SAN

4h 45m1 stop

11:08 a.m. - 9:12 p.m.SAN-SEA

10h 04m2 stops

C$ 274United Airlines

Find Deal

Sat, 17 Jan - Sat, 24 Jan

7:52 a.m. - 10:52 a.m.SEA-SAN

3h 00mdirect

1:52 p.m. - 6:50 p.m.SAN-SEA

4h 58m1 stop

C$ 278Alaska Airlines

Find Deal

Tue, 14 Oct - Tue, 14 Oct

Delta flights from Seattle to San Diego

Our best Delta deals on Seattle to San Diego flight tickets

Delta

11 Oct

SEA7:45 p.m.Seattle/Tacoma Intl

2h 46m

SAN10:31 p.m.San Diego

18 Oct

SAN1:40 p.m.San Diego

3h 10m

SEA4:50 p.m.Seattle/Tacoma Intl

C$ 245

Find similar

Delta

19 Nov

SEA7:55 p.m.Seattle/Tacoma Intl

2h 52m

SAN10:47 p.m.San Diego

23 Nov

SAN6:15 a.m.San Diego

3h 21m

SEA9:36 a.m.Seattle/Tacoma Intl

C$ 258

Find similar

Delta

21 Nov

SEA7:10 a.m.Seattle/Tacoma Intl

2h 56m

SAN10:06 a.m.San Diego

28 Nov

SAN6:15 a.m.San Diego

3h 21m

SEA9:36 a.m.Seattle/Tacoma Intl

C$ 272

Find similar

Alaska Airlines flights from Seattle to San Diego

Our best Alaska Airlines deals on Seattle to San Diego flight tickets

Alaska Airlines

14 Oct

SEA7:00 a.m.Seattle/Tacoma Intl

5h 16m

1 stop

SAN12:16 p.m.San Diego

14 Oct

SAN1:52 p.m.San Diego

4h 58m

1 stop

SEA6:50 p.m.Seattle/Tacoma Intl

C$ 264

Find similar

Alaska Airlines

14 Oct

SEA7:52 a.m.Seattle/Tacoma Intl

3h 00m

SAN10:52 a.m.San Diego

14 Oct

SAN1:52 p.m.San Diego

4h 58m

1 stop

SEA6:50 p.m.Seattle/Tacoma Intl

C$ 278

Find similar

Alaska Airlines

22 Oct

SEA7:00 a.m.Seattle/Tacoma Intl

5h 16m

1 stop

SAN12:16 p.m.San Diego

27 Oct

SAN3:27 p.m.San Diego

6h 55m

1 stop

SEA10:22 p.m.Seattle/Tacoma Intl

C$ 285

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 15/10

7:15 p.m.-10:13 p.m.

Nonstop2h 58m

San Diego

Tue 21/10

6:25 p.m.-9:32 p.m.

Nonstop3h 07m

C$ 238

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/10

8:10 p.m.-11:05 p.m.

Nonstop2h 55m

San Diego

Tue 14/10

1:52 p.m.-6:50 p.m.

1 stop4h 58m

C$ 239

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/10

7:45 p.m.-10:31 p.m.

Nonstop2h 46m

San Diego

Sat 18/10

1:40 p.m.-4:50 p.m.

Nonstop3h 10m

C$ 245

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 8/11

10:15 a.m.-5:50 p.m.

2 stops7h 35m

San Diego

Thu 13/11

6:45 p.m.-11:10 p.m.

1 stop4h 25m

C$ 246

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/10

3:28 p.m.-8:49 p.m.

1 stop5h 21m

San Diego

Tue 14/10

11:08 a.m.-9:15 p.m.

2 stops10h 07m

C$ 251

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 19/11

7:55 p.m.-10:47 p.m.

Nonstop2h 52m

San Diego

Sun 23/11

6:15 a.m.-9:36 a.m.

Nonstop3h 21m

C$ 258

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 14/10

7:00 a.m.-12:16 p.m.

1 stop5h 16m

San Diego

Tue 14/10

1:52 p.m.-6:50 p.m.

1 stop4h 58m

C$ 264

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 14/10

6:55 a.m.-11:20 a.m.

1 stop4h 25m

San Diego

Tue 14/10

3:35 p.m.-10:00 p.m.

2 stops6h 25m

C$ 265

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 17/1

7:30 p.m.-12:15 a.m.

1 stop4h 45m

San Diego

Sat 24/1

11:08 a.m.-9:12 p.m.

2 stops10h 04m

C$ 274

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 14/10

7:52 a.m.-10:52 a.m.

Nonstop3h 00m

San Diego

Tue 14/10

1:52 p.m.-6:50 p.m.

1 stop4h 58m

C$ 278

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to San Diego?

In general, January is the cheapest month to fly from Seattle to San Diego. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 286. If you are unable to visit San Diego during the month of January, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around C$ 307.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart on your flight to San Diego is on a Tuesday when prices can be found for as low as C$ 272. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to San Diego on Saturday is C$ 589.

What is the cheapest time of day to depart on your flight to San Diego?

Flying to San Diego from Seattle in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as C$ 295 when looking at flights departing in the afternoon. Flights to San Diego are more costly at noon, with an average ticket price of C$ 394. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Seattle/Tacoma Intl to San Diego flight route?

Fly from Seattle/Tacoma Intl to San Diego for the best Seattle/Tacoma Intl - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around C$ 368 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Seattle for as low as C$ 303 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to San Diego flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to San Diego flights?

No. A direct flight is the cheapest option for a flight between Seattle to San Diego.

How have Seattle to San Diego flight prices changed over time?

As of September 2025, prices for Seattle to San Diego flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San Diego according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to San Diego (SEA to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Diego

Best price found	C$ 164
Fastest flight time	2h 40m
Direct flights	Every day
Airports in San Diego	1 airport

The best one-way flight to San Diego from Seattle in the past 72 hours is C$ 164. The best round-trip flight deal from Seattle to San Diego found on momondo in the last 72 hours is C$ 271.

The fastest flight from Seattle to San Diego takes 2h 40m

Direct flights go from Seattle to San Diego every day.

There is 1 airport near San Diego: San Diego (SAN)

Search flight deals

How far is Seattle/Tacoma Intl to San Diego by plane?
A flight from Seattle/Tacoma Intl to San Diego will travel around 1711.9 km. Typically, this will take 2h 46m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?
Prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Diego Airport?
There are 5 operators available for flights from Seattle/Tacoma Intl Airport to San Diego Airport as of September 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to San Diego?
Based on momondo bookings for flights between Seattle and San Diego, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 22.95% of the total bookings. Other popular models include Boeing 737 MAX 9 with 20.62%, Boeing 737 with 14.81%, and Boeing 737-900 with 9.34%.
What is the most popular airline from Seattle to San Diego?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to San Diego is Alaska Airlines (52% of total bookings). The next most popular airlines are Delta (23%), Hawaiian Airlines (10%), and Southwest (9%).

Best airlines flying from Seattle to San Diego

Compare and see reviews for airlines that fly from Seattle to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom C$ 108	Free Cancellation	Rating 7.9 7,957 reviews	Search Delta flights
Spirit Airlines	PriceFrom C$ 153	Free Cancellation	Rating 6.3 8,019 reviews	Search Spirit Airlines flights
Alaska Airlines	PriceFrom C$ 189	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Hawaiian Airlines	PriceFrom C$ 200	Free Cancellation	Rating 7.8 2,724 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom C$ 354	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights

Alaska Airlines Flights From Seattle to San Diego
Across 33 Alaska Airlines flights from Seattle to San Diego this week, the average price was C$ 254, with the best Alaska Airlines deals starting from C$ 137 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.
Southwest Flights From Seattle to San Diego
Across 4,242 Southwest reviews on momondo, the average score is 8.0/10. Southwest flies from Seattle to San Diego about 2 times each week, with ticket deals ranging from C$ 256 to C$ 281. Price data is based on momondo searches in the last 72 hours.

Coronado

Chula Vista

El Cajon

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Diego?

Finding the right flight to San Diego from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Can I find flights from Seattle to San Diego with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Diego from Seattle with this policy.

How can momondo help me find flights from Seattle to San Diego?

momondo helps you find the best flight between Seattle and San Diego by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to San Diego right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to San Diego from C$ 130

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San Diego departing on 13/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Delta flights from Seattle to San Diego

Our best Delta deals on Seattle to San Diego flight tickets

Alaska Airlines flights from Seattle to San Diego

Our best Alaska Airlines deals on Seattle to San Diego flight tickets

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How to get the cheapest flight ticket from Seattle to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

What is the cheapest day to depart on your flight to San Diego?

What is the cheapest time of day to depart on your flight to San Diego?

What is the cheapest Seattle/Tacoma Intl to San Diego flight route?

Fly from Seattle/Tacoma Intl to San Diego for the best Seattle/Tacoma Intl - San Diego flight prices

How far in advance should I book a flight to San Diego?

What cabin class options are available on Seattle/Tacoma Intl to San Diego flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to San Diego flights?

No. A direct flight is the cheapest option for a flight between Seattle to San Diego.

How have Seattle to San Diego flight prices changed over time?

As of September 2025, prices for Seattle to San Diego flights are approximately 31% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Seattle/Tacoma Intl to San Diego?

Southwest, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to San Diego

Which airlines fly to San Diego?

How many flights depart from Seattle to San Diego on average per day?

45 flights are operational daily from Seattle to San Diego as of September 2025. The most popular departure time for this route is 7:00p.m., with 43% of flights per day taking off in the evening.

How many flights depart from Seattle to San Diego on average per week?

As of September 2025, there are 315 flights per week flying from Seattle to San Diego. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

When to book flights from Seattle to San Diego

Cheap Seattle to San Diego (SEA to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Diego

Best price found

Fastest flight time

Direct flights

Airports in San Diego

How far is Seattle/Tacoma Intl to San Diego by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Diego Airport?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Diego Airport?

What documentation or ID do you need to fly to San Diego Airport?

What is the most popular plane model from Seattle to San Diego?

What is the most popular airline from Seattle to San Diego?

Best airlines flying from Seattle to San Diego

Compare and see reviews for airlines that fly from Seattle to San Diego with momondo

Alaska Airlines Flights From Seattle to San Diego

Southwest Flights From Seattle to San Diego

Travelling to a place near San Diego?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Diego?

Can I find flights from Seattle to San Diego with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to San Diego?

I’m not ready to book a flight from Seattle to San Diego right now. Can momondo alert me if prices change?

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California