What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Carlsbad one-way?

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $24. Allegiant Air flights start at $39 while deals on American Airlines start at $58 one-way.

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Carlsbad

The most flights from PHX to C4D are scheduled on a Monday (87 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (45 on average).

In terms of precipitation, rainfall in Carlsbad ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Carlsbad when rainfall is around 0.0 in.

If weather is an important factor for your trip to Carlsbad, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Carlsbad?

Looking at all options, your cheapest flight can be booked for $45. While the most popular route (Phoenix Sky Harbor Intl - Los Angeles) can be booked for $67 on average, our data indicates $957 when flying from Phoenix Sky Harbor Intl Airport to Carlsbad.

What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Carlsbad?

Consider China Eastern (95%), Asiana Airlines (91%) or Air China (90%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Carlsbad.

What are the most popular airlines that fly from Phoenix Sky Harbor Intl Airport to Carlsbad?

Before booking your flight from Phoenix Sky Harbor Intl Airport to Carlsbad check out the most popular airlines for this route: Frontier, American Airlines or Southwest.

Can I find deals for flights from Sky Harbor Intl to Carlsbad that include hotel bookings?

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

How can I find direct flights from Sky Harbor Intl to Carlsbad?

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

Can I find deals for business class flights from Sky Harbor Intl to Carlsbad?

Yes. Cheapflights offers flight deals from Sky Harbor Intl 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.

Find Cheap Flights from Phoenix Sky Harbor Intl Airport to Carlsbad, CA

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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Carlsbad are usually found in January or February, booked 87 days in advance, depart on a Saturday or Friday and return on a Friday

Find flight deals from Sky Harbor Intl to Carlsbad

Popular in	September
Cheapest in	January
Average price	$216

Highest demand for flights based on searches. 13% potential increase in price ($29 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in November 2026

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Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Carlsbad

Prices

Airlines

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

Unlike in the evening, when flights are generally more expensive, you can save up to 15% on flights from Phoenix Sky Harbor Intl Airport to Carlsbad by exploring options for tickets at noon.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Carlsbad?

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Carlsbad flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Carlsbad

Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Phoenix Sky Harbor Intl Airport to Carlsbad. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,212 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Southwest

8.0

Very good

4,212 reviews

Southwest

8.0

Very good

4,212 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Delta

7.8

Good

8,697 reviews

Southwest

8.0

Very good

4,212 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

United Airlines

7.3

Good

10,461 reviews

Southwest

8.0

Very good

4,212 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

American Airlines

7.0

Good

12,231 reviews

Southwest

8.0

Very good

4,212 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Frontier

5.5

Fair

2,511 reviews

Southwest

8.0

Very good

4,212 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Related info for your journey

What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Carlsbad one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $24. Allegiant Air flights start at $39 while deals on American Airlines start at $58 one-way.
What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Carlsbad?
Consider China Eastern (95%), Asiana Airlines (91%) or Air China (90%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Carlsbad.
What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Carlsbad?
Looking at all options, your cheapest flight can be booked for $45. While the most popular route (Phoenix Sky Harbor Intl - Los Angeles) can be booked for $67 on average, our data indicates $957 when flying from Phoenix Sky Harbor Intl Airport to Carlsbad.
Can I find deals for flights from Sky Harbor Intl to Carlsbad that include hotel bookings?
Yes. In addition to deals on Sky Harbor Intl to Carlsbad flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sky Harbor Intl to Carlsbad?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Carlsbad.
Can I find deals for business class flights from Sky Harbor Intl to Carlsbad?
Yes. Cheapflights offers flight deals from Sky Harbor Intl 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.

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Top 8 airlines flying from Sky Harbor Intl to Carlsbad

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$46	Average$147	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$78	Average$219	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$101	Average$185	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$117	Average$297	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$117	Average$408	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$117	Average$314	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$117	Average$266	FlexibilityNo cancel fee	On-time69%
Southern / Mokulele	Cheapest$154	Average$254	FlexibilityNo cancel fee	On-timeN/A

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Cheap flights from Sky Harbor Intl (PHX) to Carlsbad, CA, CA

Find cheap flights from Sky Harbor Intl to Carlsbad with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Sky Harbor Intl to Carlsbad

Popular in

Cheapest in

Average price

Cheapflights Insights

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

Unlike in the evening, when flights are generally more expensive, you can save up to 15% on flights from Phoenix Sky Harbor Intl Airport to Carlsbad by exploring options for tickets at noon.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Carlsbad?

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Carlsbad flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Carlsbad

The most flights from PHX to C4D are scheduled on a Monday (87 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (45 on average).

Reviews of airlines servicing Carlsbad

Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Phoenix Sky Harbor Intl Airport to Carlsbad. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Carlsbad one-way?

What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Carlsbad?

What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Carlsbad?

Can I find deals for flights from Sky Harbor Intl to Carlsbad that include hotel bookings?

How can I find direct flights from Sky Harbor Intl to Carlsbad?

Can I find deals for business class flights from Sky Harbor Intl to Carlsbad?

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 Sky Harbor Intl to Carlsbad

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Carlsbad by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Sky Harbor Intl to Carlsbad by cabin class

Find flights from Sky Harbor Intl to Carlsbad, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Sky Harbor Intl and Carlsbad flights

Browse other Sky Harbor Intl and Carlsbad flight options. Last updated on November 5, 2026.

Other flights from Sky Harbor Intl

Browse through other flights departing from Sky Harbor Intl. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.

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Top 8 airlines flying from Sky Harbor Intl to Carlsbad

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