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$131+ Cheap flights from Washington, D.C. (WAS) 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LAX
Jun 16 — Jun 231
Tue 6/16
Tue 6/23
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Carlsbad are usually found in September or August, booked 71 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Washington, D.C. to Carlsbad

Cheapest flights from Washington, D.C. to Carlsbad
Explore the most affordable flight options available from Washington, D.C. to Carlsbad. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 17, 2026.

This Expedia deal was found by Cheapflights users on 5/12. 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.
Tue 9/88:17 pm
BWI
-
LAX
1 stop25h 31m
Frontier
Wed 9/99:56 pm
LAX
-
BWI
1 stop8h 32m
Frontier
Deal found 5/12$210
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Tue 9/2210:23 am
BWI
-
LAX
1 stop11h 25m
Frontier
Tue 9/299:56 pm
LAX
-
BWI
1 stop8h 32m
Frontier
Deal found 5/13$212
This Frontier deal was found by Cheapflights users on 5/12. 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 9/1610:23 am
BWI
-
LAX
1 stop11h 25m
Frontier
Mon 9/219:56 pm
LAX
-
BWI
1 stop8h 32m
Frontier
Deal found 5/12$224
This Expedia deal was found by Cheapflights users on 5/12. 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.
Wed 7/89:28 pm
BWI
-
LAX
1 stop23h 44m
Frontier
Wed 7/153:11 pm
LAX
-
BWI
1 stop13h 25m
Frontier
Deal found 5/12$230
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Tue 8/114:29 pm
BWI
-
LAX
1 stop18h 07m
Frontier
Thu 8/1310:59 am
LAX
-
BWI
1 stop9h 01m
Frontier
Deal found 5/12$231
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 9/1910:23 am
BWI
-
LAX
1 stop11h 25m
Frontier
Wed 9/239:56 pm
LAX
-
BWI
1 stop8h 32m
Frontier
Deal found 5/13$232
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Fri 8/75:32 pm
BWI
-
LAX
1 stop17h 04m
Frontier
Wed 9/99:56 pm
LAX
-
BWI
1 stop8h 32m
Frontier
Deal found 5/13$237
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Wed 9/2310:23 am
BWI
-
LAX
1 stop11h 25m
Frontier
Mon 9/2811:03 am
LAX
-
BWI
2 stops26h 09m
Frontier
Deal found 5/12$239
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:29 pm
BWI
-
LAX
1 stop18h 07m
Frontier
Wed 8/129:44 am
LAX
-
BWI
1 stop7h 52m
Frontier
Deal found 5/12$242
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Tue 8/184:29 pm
BWI
-
LAX
1 stop18h 37m
Frontier
Fri 8/213:28 pm
LAX
-
BWI
1 stop13h 17m
Frontier
Deal found 5/12$243
This Frontier deal was found by Cheapflights users on 5/12. 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.
Sat 6/69:56 pm
BWI
-
LAX
1 stop14h 52m
Frontier
Sat 8/2911:20 pm
LAX
-
BWI
1 stop13h 13m
Frontier
Deal found 5/12$244
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 8/102:25 pm
BWI
-
LAX
1 stop7h 47m
Frontier
Thu 8/139:44 am
LAX
-
BWI
1 stop7h 52m
Frontier
Deal found 5/12$246

Find flight deals from Washington, D.C. to Carlsbad

Keep the following information in mind while searching for Washington, D.C. to Carlsbad flight deals. Data was last updated May 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$224
(Expedia)

One-way from

$131
(CheapOair)

Popular in

March

Cheapest in

September

Average price

$386
Provider with most accurate pricing for Washington, D.C. (WAS)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Los Angeles flights.
Search Deals
From Washington, D.C. (WAS) to Carlsbad
Search Deals
One-way flight from Washington, D.C. (WAS) to Carlsbad
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 May 17, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Carlsbad that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Los Angeles

IAD - LAX

IADLAX

Washington, D.C. Dulles Intl

Tue 8/4

10:20 pm-12:57 am

Nonstop5h 37m

Los Angeles

Wed 8/12

10:59 pm-6:52 am

Nonstop4h 53m

$282

Washington, D.C.Los Angeles

IAD - LAX

IADLAX

Washington, D.C. Dulles Intl

Fri 10/9

10:10 pm-12:41 am

Nonstop5h 31m

Los Angeles

Tue 10/13

11:30 pm-7:20 am

Nonstop4h 50m

$289

Washington, D.C.Los Angeles

DCA - LAX

DCALAX

Washington, D.C. Reagan-National

Thu 7/9

6:10 pm-12:05 am

1 stop8h 55m

Los Angeles

Sun 7/12

11:40 pm-12:20 pm

1 stop9h 40m

$293

Washington, D.C.Los Angeles

DCA - LAX

DCALAX

Washington, D.C. Reagan-National

Wed 7/1

7:55 pm-12:10 am

1 stop7h 15m

Los Angeles

Mon 7/6

6:20 pm-8:25 am

1 stop11h 05m

$298

Washington, D.C.Los Angeles

IAD - LAX

IADLAX

Washington, D.C. Dulles Intl

Thu 7/30

7:00 am-9:26 am

Nonstop5h 26m

Los Angeles

Mon 8/3

9:20 pm-5:26 am

Nonstop5h 06m

$327

Washington, D.C.Los Angeles

DCA - LAX

DCALAX

Washington, D.C. Reagan-National

Tue 6/16

4:55 pm-10:50 pm

2 stops8h 55m

Los Angeles

Fri 6/19

6:20 pm-8:40 am

1 stop11h 20m

$333

Washington, D.C.Los Angeles

IAD - LAX

IADLAX

Washington, D.C. Dulles Intl

Sat 8/22

7:00 am-9:34 am

Nonstop5h 34m

Los Angeles

Sat 8/29

10:59 pm-6:52 am

Nonstop4h 53m

$337

BaltimoreLos Angeles

BWI - LAX

BWILAX

Baltimore/Washington

Tue 10/6

4:18 pm-10:42 pm

1 stop9h 24m

Los Angeles

Tue 10/13

8:30 am-4:35 pm

Nonstop5h 05m

$347

Washington, D.C.Los Angeles

DCA - LAX

DCALAX

Washington, D.C. Reagan-National

Wed 6/17

12:00 pm-7:30 pm

2 stops10h 30m

Los Angeles

Fri 6/19

6:20 pm-8:40 am

1 stop11h 20m

$353
Quickest round-trip

Washington, D.C.Los Angeles

IAD - LAX

IADLAX

Washington, D.C. Dulles Intl

Fri 11/13

5:30 pm-7:54 pm

Nonstop5h 24m

Los Angeles

Sun 11/22

10:50 pm-6:45 am

Nonstop4h 55m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Washington, D.C. to Carlsbad

Have a flexible travel schedule? Discover the best time to fly to Carlsbad from Washington, D.C. 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 Washington, D.C. to Carlsbad

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

Find hourly flight availability from Washington, D.C. 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 May 17, 2026.

It’s typically best to fly out from Washington, D.C. to Carlsbad in the evening. Doing so could potentially save you 31% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. to Carlsbad?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Carlsbad. Price data was last updated on May 9, 2026.

Travelers seeking maximum savings on their Washington, D.C. to Carlsbad flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to Carlsbad

Explore weekly flight availability from Washington, D.C. 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 May 17, 2026.

The most flights from WAS to C4D are scheduled on a Saturday (48 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Washington, D.C. 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 May 17, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andUnited Airlines from Washington, D.C. 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
4,292 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,292 reviews
Southwest
8.0
Very good
4,292 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,378 reviews
Southwest
8.0
Very good
4,292 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,730 reviews
Southwest
8.0
Very good
4,292 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,655 reviews
Southwest
8.0
Very good
4,292 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Spirit Airlines
6.2
Okay
8,623 reviews
Southwest
8.0
Very good
4,292 reviews

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

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

  • How long is the flight from Washington, D.C. to Carlsbad?

    For as low as $282, United Airlines can have you in Carlsbad from Washington, D.C. in 5h 37m. There are 2282 mi between Washington, D.C. and Carlsbad. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Washington, D.C. to Carlsbad one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $74. Users have also found prices from $105 and $107 on Southwest and JetBlue, respectively.

  • What are the most popular routes from Washington, D.C. to Carlsbad?

    When deciding which route to take from Washington, D.C. to Carlsbad consider Washington, D.C. Dulles Intl - Los Angeles, Washington, D.C. Reagan-National - Los Angeles or Baltimore/Washington - Los Angeles as they are the most popular.

  • What are the most reliable airlines from Washington, D.C. to Carlsbad?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. to Carlsbad on time: Ethiopian Air (95%), United Airlines (89%), Air China (88%).

  • What are the cheapest flights from Washington, D.C. to Carlsbad?

    The cheapest flight price from Washington, D.C. to Carlsbad is $128. On average you can expect to pay $993. The most popular route, (Washington, D.C. Dulles Intl - Los Angeles), can usually be booked for $227.

  • Can I find deals for flights from Washington, D.C. to Carlsbad that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to Carlsbad?

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

  • Can I find deals for business class flights from Washington, D.C. to Carlsbad?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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

Browse thousands of different options on Cheapflights for your next trip

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Top 9 airlines flying from Washington, D.C. to Carlsbad

Discover the top 9 airlines that operate flights from Washington, D.C. 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 May 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$51Average$217FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$113Average$339FlexibilityNo cancel feeOn-time85%
FrontierCheapest$117Average$271FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$127Average$409FlexibilityNo cancel feeOn-time62%
DeltaCheapest$131Average$438FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$138Average$387FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$168Average$440FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$173Average$434FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$186Average$447FlexibilityNo cancel feeOn-time71%

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