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Carlsbad

$71+ Cheap flights from Seattle (SEA) to Carlsbad, CA, CA

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAX
May 18 — May 251
Mon 5/18
Mon 5/25
1 adult, Economy
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Find cheap flights from Seattle to Carlsbad with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Carlsbad are usually found in May or March, booked 65 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Seattle to Carlsbad

Cheapest flights from Seattle to Carlsbad
Explore the most affordable flight options available from Seattle to Carlsbad. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:06 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Tue 5/193:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/15$96
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:21 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Wed 5/273:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/14$97
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:06 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Fri 5/83:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/14$98
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:37 am
SEA
-
LAX
1 stop21h 26m
Frontier
Tue 6/93:25 pm
LAX
-
SEA
Nonstop3h 01m
Frontier
Deal found 4/15$101
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:37 am
SEA
-
LAX
1 stop21h 26m
Frontier
Wed 5/133:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/18$102
This Expedia deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:50 pm
SEA
-
LAX
1 stop13h 05m
Frontier
Sun 5/103:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/14$103
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:37 am
SEA
-
LAX
1 stop21h 26m
Frontier
Thu 5/143:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/15$106
This Super.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:21 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Thu 6/43:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/16$107
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:21 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Thu 6/43:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/14$108
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:21 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Fri 6/53:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/14$109
This Trip.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:50 pm
SEA
-
LAX
1 stop28h 26m
Frontier
Thu 5/143:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/16$111
This CheapOair deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:06 am
SEA
-
LAX
Nonstop2h 57m
Frontier
Sun 5/103:15 pm
LAX
-
SEA
Nonstop3h 20m
Frontier
Deal found 4/16$112

Find flight deals from Seattle to Carlsbad

Keep the following information in mind while searching for Seattle to Carlsbad flight deals. Data was last updated April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$96
(Kiwi.com)

One-way from

$71
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$252
Provider with most accurate pricing for Seattle/Tacoma Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Los Angeles flights.
Search Deals
From Seattle/Tacoma Intl to Carlsbad
Search Deals
One-way flight from Seattle/Tacoma Intl to Carlsbad
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Carlsbad 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 2,558,603 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from Seattle to Carlsbad that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 5/12

5:35 pm-8:18 pm

Nonstop2h 43m

Los Angeles

Sat 5/16

5:40 pm-8:30 pm

Nonstop2h 50m

$177

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 5/13

10:15 am-1:05 pm

Nonstop2h 50m

Los Angeles

Sat 5/16

2:05 pm-4:53 pm

Nonstop2h 48m

$177

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Mon 5/25

6:06 am-8:50 am

Nonstop2h 44m

Los Angeles

Fri 5/29

7:15 pm-10:08 pm

Nonstop2h 53m

$197

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 5/30

6:40 am-6:20 pm

2 stops11h 40m

Los Angeles

Sat 6/6

2:25 pm-9:50 pm

2 stops7h 25m

$247

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Thu 5/14

5:00 am-3:30 pm

1 stop10h 30m

Los Angeles

Mon 5/18

9:25 pm-8:40 am

1 stop11h 15m

$258

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 10/10

7:28 pm-12:31 am

1 stop5h 03m

Los Angeles

Tue 10/13

12:50 pm-9:15 pm

1 stop8h 25m

$262

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 5/16

10:45 am-4:20 pm

1 stop5h 35m

Los Angeles

Tue 5/19

6:20 am-1:25 pm

2 stops7h 05m

$262

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 10/2

5:33 pm-12:18 am

1 stop6h 45m

Los Angeles

Mon 10/5

5:00 pm-11:28 pm

1 stop6h 28m

$267

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 5/9

7:25 am-10:10 am

Nonstop2h 45m

Los Angeles

Sun 5/10

12:10 pm-3:05 pm

Nonstop2h 55m

$268

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sun 5/24

8:00 am-12:15 pm

1 stop4h 15m

Los Angeles

Wed 5/27

3:35 pm-10:55 pm

2 stops7h 20m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Seattle to Carlsbad

Have a flexible travel schedule? Discover the best time to fly to Carlsbad from Seattle 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Carlsbad

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Carlsbad. Price data was last updated on April 10, 2026.

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Carlsbad. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest time of day to fly from SEA to C4D?

Find hourly flight availability from Seattle to Carlsbad. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 18, 2026.

One of the essential ways to save on airfare from Seattle to Carlsbad is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 8% on airfare.

What is the cheapest day to fly from Seattle to Carlsbad?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Carlsbad. Price data was last updated on April 11, 2026.

Travelers seeking maximum savings on their Seattle to Carlsbad flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Carlsbad

Explore weekly flight availability from Seattle to Carlsbad. 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 April 18, 2026.

The most flights from SEA to C4D are scheduled on a Saturday (93 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (37 on average).

How much does it cost to fly round-trip from Seattle to Carlsbad?

Reviews of airlines servicing Carlsbad

Get insights into the airlines that provide service to Carlsbad. 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 Carlsbad. Reviews last updated April 18, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Seattle to Carlsbad by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,260 reviews

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,260 reviews
Alaska Airlines
7.9
Good
12,260 reviews

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,422 reviews
Alaska Airlines
7.9
Good
12,260 reviews

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,605 reviews
Alaska Airlines
7.9
Good
12,260 reviews

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.1
Good
11,617 reviews
Alaska Airlines
7.9
Good
12,260 reviews

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.7
Fair
2,987 reviews
Alaska Airlines
7.9
Good
12,260 reviews

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Carlsbad. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Carlsbad?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Carlsbad. 9 airlines have flights from Seattle/Tacoma Intl to Carlsbad on a regular basis. Booking flights from Seattle/Tacoma Intl to Carlsbad should not be difficult; the airport handles an average of 58 outbound flights to Carlsbad per day.

  • How popular is this Seattle to Carlsbad flight route?

    Flights from Seattle/Tacoma Intl to Carlsbad have been viewed 301 times in the past calendar month.

  • How long is the flight from Seattle to Carlsbad?

    There are many flights that can get you from Seattle to Carlsbad in 2h 57m. Fly via Frontier to get the fastest option. Seattle and Carlsbad are separated by a distance of 954 mi. All flights are typically nonstop.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $40. Users have also found prices from $49 and $79 on Spirit Airlines and Southwest, respectively.

  • What are the most reliable airlines from Seattle to Carlsbad?

    Before booking your flight to Carlsbad from Seattle, check out the most reliable airlines to get you to your destination on time: ITA Airways (100%), Air China (97%), China Eastern( 95%).

  • What are the cheapest flights from Seattle to Carlsbad?

    Looking for the cheapest flight from Seattle to Carlsbad? While on average our users pay $747, our data indicates the cheapest price to be $73. The most popular route (Seattle/Tacoma Intl - Los Angeles), is priced around $102.

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

    Yes. In addition to deals on Seattle to Carlsbad flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Carlsbad?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Carlsbad by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Seattle to Carlsbad

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Top 9 airlines flying from Seattle to Carlsbad

Discover the top 9 airlines that operate flights from Seattle to Carlsbad. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$44Average$188FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$65Average$169FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$98Average$263FlexibilityNo cancel feeOn-time85%
DeltaCheapest$106Average$259FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$113Average$318FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$118Average$260FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$136Average$278FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$152Average$289FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$184Average$463FlexibilityNo cancel feeOn-time71%

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