Which airline has the best punctuality record on Seattle to San Diego flights?

According to our data, Delta has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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

32 flights are operational daily from Seattle to San Diego as of January 2026. The most popular departure time for this route is 6:00p.m., with 43% of flights per day taking off in the afternoon.

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 42% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 5 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Seattle to San Diego flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

How often are flights from Seattle to San Diego delayed?

Historically, on average around 16% of flights between Seattle and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 124 minutes.

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

As of January 2026, there are 230 flights per week flying from Seattle to San Diego. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.

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

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

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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 4 operators available for flights from Seattle/Tacoma Intl Airport to San Diego Airport as of January 2026.

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$ 65 Cheap Flights from Seattle to San Diego in 2026

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Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:53 a.m. - 3:55 p.m.

SEA

SAN

6h 02m

1 stop

6:34 p.m. - 9:45 p.m.

SAN

SEA

3h 11mdirect

C$ 219Alaska Airlines

Tue, 28 Apr - Tue, 28 Apr

2:50 p.m. - 5:30 p.m.

SEA

SAN

2h 40mdirect

10:45 a.m. - 1:50 p.m.

SAN

SEA

3h 05mdirect

C$ 228Southwest

Sat, 7 Mar - Tue, 10 Mar

2:50 p.m. - 5:30 p.m.

SEA

SAN

2h 40mdirect

10:45 a.m. - 1:50 p.m.

SAN

SEA

3h 05mdirect

C$ 232Southwest

Sat, 7 Mar - Wed, 11 Mar

8:55 p.m. - 11:44 p.m.

SEA

SAN

2h 49mdirect

2:38 p.m. - 5:49 p.m.

SAN

SEA

3h 11mdirect

C$ 234Alaska Airlines

Sat, 14 Mar - Tue, 24 Mar

1:45 p.m. - 4:29 p.m.

SEA

SAN

2h 44mdirect

7:20 a.m. - 10:36 a.m.

SAN

SEA

3h 16mdirect

C$ 240Delta

Sat, 21 Feb - Mon, 2 Mar

7:35 p.m. - 10:20 p.m.

SEA

SAN

2h 45mdirect

6:45 p.m. - 9:59 p.m.

SAN

SEA

3h 14mdirect

C$ 242Delta

Sat, 21 Feb - Wed, 25 Feb

1:45 p.m. - 4:29 p.m.

SEA

SAN

2h 44mdirect

10:59 a.m. - 2:15 p.m.

SAN

SEA

3h 16mdirect

C$ 243Delta

Sat, 21 Feb - Wed, 25 Feb

9:30 a.m. - 4:45 p.m.

SEA

SAN

7h 15m

1 stop

7:35 a.m. - 12:10 p.m.

SAN

SEA

4h 35m

1 stop

C$ 244Southwest

Wed, 18 Feb - Wed, 25 Feb

6:15 a.m. - 12:10 p.m.

SEA

SAN

5h 55m

1 stop

10:55 a.m. - 2:00 p.m.

SAN

SEA

3h 05mdirect

C$ 246Southwest

Thu, 26 Feb - Thu, 5 Mar

11:30 a.m. - 6:25 p.m.

SEA

SAN

6h 55m

1 stop

7:35 a.m. - 12:10 p.m.

SAN

SEA

4h 35m

1 stop

C$ 248Southwest

Mon, 23 Feb - Tue, 24 Feb

Alaska Airlines flights from Seattle to San Diego

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

Alaska Airlines

28 Apr

SEA9:53 a.m.Seattle/Tacoma Intl

6h 02m

1 stop

SAN3:55 p.m.San Diego

28 Apr

SAN6:34 p.m.San Diego

3h 11m

SEA9:45 p.m.Seattle/Tacoma Intl

C$ 219

Alaska Airlines

25 Feb

SEA12:00 p.m.Seattle/Tacoma Intl

4h 47m

1 stop

SAN4:47 p.m.San Diego

4 Mar

SAN6:42 p.m.San Diego

14h 09m

1 stop

SEA8:51 a.m.Seattle/Tacoma Intl

C$ 258

Alaska Airlines

12 Mar

SEA3:40 p.m.Seattle/Tacoma Intl

2h 50m

SAN6:30 p.m.San Diego

26 Mar

SAN8:43 p.m.San Diego

3h 16m

SEA11:59 p.m.Seattle/Tacoma Intl

C$ 269

Southwest flights from Seattle to San Diego

Our best Southwest deals on Seattle to San Diego flight tickets

Southwest

7 Mar

SEA2:50 p.m.Seattle/Tacoma Intl

2h 40m

SAN5:30 p.m.San Diego

10 Mar

SAN10:45 a.m.San Diego

3h 05m

SEA1:50 p.m.Seattle/Tacoma Intl

C$ 228

Southwest

17 Mar

SEA7:30 a.m.Seattle/Tacoma Intl

4h 50m

1 stop

SAN12:20 p.m.San Diego

25 Mar

SAN10:45 a.m.San Diego

3h 05m

SEA1:50 p.m.Seattle/Tacoma Intl

C$ 238

Southwest

3 Mar

SEA11:20 a.m.Seattle/Tacoma Intl

5h 40m

1 stop

SAN5:00 p.m.San Diego

5 Mar

SAN10:55 a.m.San Diego

3h 05m

SEA2:00 p.m.Seattle/Tacoma Intl

C$ 242

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Tue 28/4

9:53 a.m.-3:55 p.m.

1 stop6h 02m

San Diego

Tue 28/4

6:34 p.m.-9:45 p.m.

Nonstop3h 11m

C$ 219

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 7/3

2:50 p.m.-5:30 p.m.

Nonstop2h 40m

San Diego

Tue 10/3

10:45 a.m.-1:50 p.m.

Nonstop3h 05m

C$ 228

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 7/3

2:50 p.m.-5:30 p.m.

Nonstop2h 40m

San Diego

Wed 11/3

10:45 a.m.-1:50 p.m.

Nonstop3h 05m

C$ 232

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 14/3

8:55 p.m.-11:44 p.m.

Nonstop2h 49m

San Diego

Tue 24/3

2:38 p.m.-5:49 p.m.

Nonstop3h 11m

C$ 234

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 21/2

1:45 p.m.-4:29 p.m.

Nonstop2h 44m

San Diego

Mon 2/3

7:20 a.m.-10:36 a.m.

Nonstop3h 16m

C$ 240

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 21/2

7:35 p.m.-10:20 p.m.

Nonstop2h 45m

San Diego

Wed 25/2

6:45 p.m.-9:59 p.m.

Nonstop3h 14m

C$ 242

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 21/2

1:45 p.m.-4:29 p.m.

Nonstop2h 44m

San Diego

Wed 25/2

10:59 a.m.-2:15 p.m.

Nonstop3h 16m

C$ 243

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 18/2

9:30 a.m.-4:45 p.m.

1 stop7h 15m

San Diego

Wed 25/2

7:35 a.m.-12:10 p.m.

1 stop4h 35m

C$ 244

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 26/2

6:15 a.m.-12:10 p.m.

1 stop5h 55m

San Diego

Thu 5/3

10:55 a.m.-2:00 p.m.

Nonstop3h 05m

C$ 246

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 23/2

11:30 a.m.-6:25 p.m.

1 stop6h 55m

San Diego

Tue 24/2

7:35 a.m.-12:10 p.m.

1 stop4h 35m

C$ 248

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

Delays

Other information

What is the cheapest month to fly to San Diego?

In general, September 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$ 280. If you are unable to visit San Diego during the month of September, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around C$ 296.

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$ 228. 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 Friday as prices are generally higher than usual. According to our data, the average ticket price to San Diego on Friday is C$ 618.

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$ 319 when looking at flights departing in the afternoon. Flights to San Diego are more costly at noon, with an average ticket price of C$ 616. 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$ 361 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$ 305 on momondo.

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

There are 2 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?

You could potentially save up to 66% on your flight if you consider stops on a Seattle to San Diego flight.

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

As of January 2026, prices for Seattle to San Diego flights are approximately 1% 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$ 152
Fastest flight time	2h 45m
Direct flights	Tue, Wed, Thu, Fri, Sat and Sun
Airports in San Diego	1 airport

The best flight deal from Seattle to San Diego found on momondo in the last 72 hours is C$ 152

The fastest flight from Seattle to San Diego takes 2h 45m

Direct flights go from Seattle to San Diego on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport in San Diego. From Seattle there are direct flights to 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 45m 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 4 operators available for flights from Seattle/Tacoma Intl Airport to San Diego Airport as of January 2026.
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 28.31% of the total bookings. Other popular models include Boeing 737-900 Passenger/BBJ3 (winglets) with 17.32%, Boeing 737 MAX 9 with 13.40%, and Boeing 737 with 11.76%.
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 (38% of total bookings). The next most popular airlines are Delta (28%), Hawaiian Airlines (18%), and Southwest (16%).

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$ 107	Free Cancellation	Rating 7.9 8,127 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom C$ 152	Free Cancellation	Rating 7.8 2,830 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom C$ 188	Free Cancellation	Rating 8.0 11,808 reviews	Search Alaska Airlines flights
Southwest	PriceFrom C$ 348	Free Cancellation	Rating 8.0 4,267 reviews	Search Southwest flights

Alaska Airlines Flights From Seattle to San Diego
Across 31 Alaska Airlines flights from Seattle to San Diego this week, the average price was C$ 375, with the best Alaska Airlines deals starting from C$ 188 round-trip. 11,808 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.
Southwest Flights From Seattle to San Diego
Across 4,267 Southwest reviews on momondo, the average score is 8.0/10. Southwest flies from Seattle to San Diego about 5 times each week, with ticket deals ranging from C$ 348 to C$ 382. Price data is based on momondo searches in the last 72 hours.

El Cajon

Coronado

Borrego Springs

Chula Vista

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$ 113

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 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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Our best Southwest deals on Seattle to San Diego flight tickets

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

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 2 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?

You could potentially save up to 66% on your flight if you consider stops on a Seattle to San Diego flight.

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

As of January 2026, prices for Seattle to San Diego flights are approximately 1% 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, United Airlines, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to San Diego

Which airlines fly to San Diego?

How often are flights from Seattle to San Diego delayed?

Historically, on average around 16% of flights between Seattle and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 124 minutes.

What is the most punctual flight time for Seattle to San Diego flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Seattle to San Diego flights?

According to our data, Delta has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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

32 flights are operational daily from Seattle to San Diego as of January 2026. The most popular departure time for this route is 6:00p.m., with 43% of flights per day taking off in the afternoon.

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

As of January 2026, there are 230 flights per week flying from Seattle to San Diego. The most common day of the week flights depart is Mon, with 20% 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