$125+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Washington, D.C. 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”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington, D.C. to Carlsbad
Cheapest flights from Washington, D.C. to CarlsbadExplore 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 January 29, 2026.
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 January 29, 2026.
This Frontier deal was found by Cheapflights users on 1/28. 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.
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 1/27. 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.
This Expedia deal was found by Cheapflights users on 1/26. 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.
This CheapOair deal was found by Cheapflights users on 1/28. 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.
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
This Expedia deal was found by Cheapflights users on 1/26. 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.
This Priceline deal was found by Cheapflights users on 1/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
This Booking.com deal was found by Cheapflights users on 1/27. 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.
This CheapOair deal was found by Cheapflights users on 1/27. 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.
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 January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $215 (Frontier) |
One-way from | $125 (Priceline) |
Popular in | December |
Cheapest in | September |
Average price | $369 |
Cheapflights Fare Finder
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
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Mon 2/23
6:00 pm-8:41 pm
Nonstop5h 41m
Los Angeles
Tue 3/3
4:05 pm-11:56 pm
Nonstop4h 51m
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Tue 2/24
9:05 am-2:40 pm
1 stop8h 35m
Los Angeles
Fri 2/27
7:55 am-6:20 pm
1 stop7h 25m
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Tue 2/17
6:00 pm-8:41 pm
Nonstop5h 41m
Los Angeles
Mon 2/23
11:25 pm-7:15 am
Nonstop4h 50m
Washington, D.C.Los Angeles
DCA - LAX
DCALAX
Washington, D.C. Reagan-National
Tue 3/31
3:45 pm-10:40 pm
2 stops9h 55m
Los Angeles
Tue 4/7
11:15 pm-11:00 am
1 stop8h 45m
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Wed 2/25
9:05 am-5:05 pm
2 stops11h 00m
Los Angeles
Sat 2/28
10:00 am-9:45 pm
1 stop8h 45m
Washington, D.C.Los Angeles
DCA - LAX
DCALAX
Washington, D.C. Reagan-National
Tue 2/24
9:59 am-1:03 pm
Nonstop6h 04m
Los Angeles
Wed 2/25
7:45 am-9:59 pm
1 stop11h 14m
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Sun 4/5
8:53 pm-11:44 pm
Nonstop5h 51m
Los Angeles
Sat 4/18
9:20 pm-5:25 am
Nonstop5h 05m
Washington, D.C.Los Angeles
DCA - LAX
DCALAX
Washington, D.C. Reagan-National
Thu 3/26
3:30 pm-10:05 pm
1 stop9h 35m
Los Angeles
Tue 4/7
11:50 pm-12:10 pm
1 stop9h 20m
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Wed 7/8
8:10 pm-10:34 pm
Nonstop5h 24m
Los Angeles
Tue 7/14
1:00 pm-8:50 pm
Nonstop4h 50m
Washington, D.C.Los Angeles
IAD - LAX
IADLAX
Washington, D.C. Dulles Intl
Wed 2/18
5:30 pm-10:00 pm
1 stop7h 30m
Los Angeles
Fri 2/20
5:25 am-2:45 pm
1 stop6h 20m
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.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to Carlsbad
How far ahead should I book a flight from Washington, D.C. to Carlsbad?
Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Carlsbad. Price data was last updated on January 23, 2026.
The price you pay for your flight from Washington, D.C. to Carlsbad may vary depending on when you book. For the best chance of a lower fare, look to book 54 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Washington, D.C. to Carlsbad?
Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Carlsbad (average of $77). Flying from Washington, D.C. to Carlsbad in December is currently the most expensive (average of $179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 January 29, 2026.
It’s typically best to fly out from Washington, D.C. to Carlsbad in the evening. Doing so could potentially save you 28% 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 January 24, 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. Sunday 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 January 29, 2026.
The most flights from WAS to C4D are scheduled on a Thursday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 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 January 29, 2026.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and United 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.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Anonymous,Jan 2026
STS - LAX
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Anonymous,Jan 2026
STS - LAX
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Anonymous,Jan 2026
STS - LAX
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Anonymous,Jan 2026
STS - LAX
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Anonymous,Jan 2026
STS - LAX
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Anonymous,Jan 2026
STS - LAX
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.
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Alternative routes for Washington, D.C. to Carlsbad
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Washington, D.C. to Carlsbad
Discover the top 10 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 January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$221 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$63 | Average$283 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$113 | Average$346 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$127 | Average$361 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$140 | Average$336 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$148 | Average$421 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$166 | Average$435 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$171 | Average$448 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$179 | Average$409 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$186 | Average$438 | FlexibilityNo cancel fee | On-time71% |