HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$124+ Cheap flights from Reagan-National (DCA) to San Diego (SAN)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to San Diego 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.

Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Diego are usually found in February or January, booked 17 days in advance, depart on a Wednesday or Friday and return on a Friday

Cheap flight deals from Reagan-National to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$252
(Southwest)

One-way from

$124
(Southwest)

Popular in

March

Cheapest in

February

Average price

$535

Good round-trip deal

$325 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Washington, D.C. Reagan-National-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-San Diego flights.
Search Deals
From Washington, D.C. Reagan-National to San Diego
Search Deals
One-way flight from Washington, D.C. Reagan-National to San Diego
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Reagan-National to San Diego.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Reagan-National to San Diego.
Search Deals

Find flight deals from Reagan-National to San Diego

Cheapest flights from Reagan-National to San Diego
Explore the most affordable flight options available from Reagan-National to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/235:40 pmDCA - SAN
1 stop7h 20mSouthwest
Wed 4/307:35 amSAN - DCA
1 stop9h 45mSouthwest
Deal found 3/24$252
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/195:00 amDCA - SAN
1 stop8h 10mAmerican Airlines
Sat 4/2610:33 pmSAN - DCA
1 stop7h 25mAmerican Airlines
Deal found 3/24$256
This JetBlue deal was found by Cheapflights users on 3/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/710:10 amDCA - SAN
1 stop12h 05mJetBlue
Fri 5/98:25 pmSAN - DCA
1 stop8h 35mJetBlue
Deal found 3/24$267
This flugladen.de deal was found by Cheapflights users on 3/24. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/199:59 amDCA - SAN
Nonstop5h 35mHawaiian Airlines
Sat 4/261:57 pmSAN - DCA
Nonstop5h 02mHawaiian Airlines
Deal found 3/24$273
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/195:10 pmDCA - SAN
1 stop8h 17mDelta
Sat 4/267:10 amSAN - DCA
1 stop7h 10mDelta
Deal found 3/24$276
This Alaska Airlines deal was found by Cheapflights users on 3/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/159:59 amDCA - SAN
Nonstop5h 35mAlaska Airlines
Wed 4/231:57 pmSAN - DCA
Nonstop5h 02mAlaska Airlines
Deal found 3/23$277
This Expedia deal was found by Cheapflights users on 3/23. 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 5/21:00 pmDCA - SAN
1 stop9h 54mMultiple Airlines
Tue 5/61:57 pmSAN - DCA
Nonstop5h 02mMultiple Airlines
Deal found 3/23$293
This Frontier deal was found by Cheapflights users on 3/23. 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 5/21:00 pmDCA - SAN
1 stop14h 13mFrontier
Mon 5/56:25 amSAN - DCA
1 stop12h 34mFrontier
Deal found 3/23$298
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/123:30 pmDCA - SAN
1 stop9h 44mUnited Airlines
Mon 6/1610:30 pmSAN - DCA
1 stop7h 27mUnited Airlines
Deal found 3/23$352

Cheapflights Fare Finder

Customize your flight search to find flights from Reagan-National to San Diego 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 March 25, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Diego that are best for you.

Fly from

Reagan-National

Fly to

San Diego

Route

Depart

Return

Price

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 4/23

5:40 pm-10:00 pm

1 stop7h 20m

San Diego

Wed 4/30

7:35 am-8:20 pm

1 stop9h 45m

$252

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 4/19

5:00 am-10:10 am

1 stop8h 10m

San Diego

Sat 4/26

10:33 pm-8:58 am

1 stop7h 25m

$256

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 5/7

10:10 am-7:15 pm

1 stop12h 05m

San Diego

Fri 5/9

8:25 pm-8:00 am

1 stop8h 35m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 4/19

9:59 am-12:34 pm

Nonstop5h 35m

San Diego

Sat 4/26

1:57 pm-9:59 pm

Nonstop5h 02m

$273

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 4/19

5:10 pm-10:27 pm

1 stop8h 17m

San Diego

Sat 4/26

7:10 am-5:20 pm

1 stop7h 10m

$276

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 4/15

9:59 am-12:34 pm

Nonstop5h 35m

San Diego

Wed 4/23

1:57 pm-9:59 pm

Nonstop5h 02m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 5/2

1:00 pm-7:54 pm

1 stop9h 54m

San Diego

Tue 5/6

1:57 pm-9:59 pm

Nonstop5h 02m

$293

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 5/2

1:00 pm-7:54 pm

1 stop9h 54m

San Diego

Sun 5/4

6:25 am-9:59 pm

1 stop12h 34m

$298

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 6/12

3:30 pm-10:14 pm

1 stop9h 44m

San Diego

Sun 6/15

10:30 pm-8:57 am

1 stop7h 27m

$352

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 4/30

5:40 pm-10:00 pm

1 stop7h 20m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 18 results
1
2

Compare providers for flights from Reagan-National to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Reagan-National to San Diego in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Reagan-National Airport-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Reagan-National to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Reagan-National 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. Reagan-National Airport to San Diego

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to San Diego. Price data was last updated on March 21, 2025.

The best time to book flights from Washington, D.C. Reagan-National Airport to San Diego is 17 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Diego?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Diego (average of $286). Flying from Washington, D.C. Reagan-National Airport to San Diego in March is currently the most expensive (average of $366). 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 DCA to SAN?

Find hourly flight availability from Reagan-National to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Reagan-National Airport to San Diego in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to San Diego. Price data was last updated on March 23, 2025.

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

Weekly flight availability from Washington, D.C. Reagan-National Airport to San Diego

Explore weekly flight availability from Reagan-National to San Diego. 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 March 25, 2025.

The most flights from DCA to SAN are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated March 25, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Washington, D.C. to San Diego by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,330 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to San Diego. 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 into for flights to San Diego from Washington, D.C. Reagan-National?

    If you book a flight to San Diego from Washington, D.C. Reagan-National, you will be flying to San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 4 flights from Washington, D.C. Reagan-National to San Diego per day from 8 different airlines.

  • What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to San Diego round-trip?

    Currently priced at $252, Southwest will fly you from Washington, D.C. Reagan-National Airport to San Diego and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $256 and $257, respectively. Southwest is currently priced 34% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Diego one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Reagan-National Airport to San Diego are Southwest ($124), United Airlines ($129), and JetBlue ($134).

  • What are the cheapest flights from Washington, D.C. Reagan-National Airport to San Diego?

    On average you can expect to pay $292 for a flight from Washington, D.C. Reagan-National Airport to San Diego. The cheapest flight overall is $118 while the most popular route, (Washington, D.C. Reagan-National - San Diego) is currently priced at $247.

  • Can I find deals for flights from Reagan-National to San Diego that include hotel bookings?

    Yes. In addition to deals on Reagan-National to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to San Diego.

  • Can I find deals for business class flights from Reagan-National to San Diego?

    Yes. Cheapflights offers flight deals from Reagan-National to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Diego (average of $286). Flying from Washington, D.C. Reagan-National Airport to San Diego in March is currently the most expensive (average of $366). 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.

See more FAQs

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

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 Reagan-National to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Las Vegas flights
Reagan-National to Los Angeles flights
Dulles Intl to Los Angeles flights
Reagan-National to Las Vegas flights
Reagan-National to San Francisco flights
Dulles Intl to San Francisco flights
Baltimore to Las Vegas flights
Baltimore to Los Angeles flights
Baltimore to San Francisco flights
Dulles Intl to San Diego flights
Baltimore to San Diego flights
Baltimore to Burbank flights
Dulles Intl to Ontario flights
Baltimore to Santa Ana flights
Baltimore to Oakland flights
Baltimore to Ontario flights
Dulles Intl to Sacramento flights
Reagan-National to Ontario flights
Dulles Intl to Santa Ana flights
Reagan-National to Santa Ana flights
Dulles Intl to Palm Springs flights
Dulles Intl to San Jose flights
Baltimore to Sacramento flights
Reagan-National to San Jose flights
Reagan-National to Sacramento flights
Baltimore to San Jose flights
Dulles Intl to Oakland flights
Reagan-National to Palm Springs flights
Dulles Intl to Reno flights
Baltimore to Palm Springs flights
Dulles Intl to Burbank flights
Dulles Intl to Long Beach flights
Reagan-National to Burbank flights
Baltimore to Reno flights
Reagan-National to Reno flights
Dulles Intl to Fresno flights
Reagan-National to Oakland flights
Reagan-National to Fresno flights
Dulles Intl to San Luis Obispo flights
Baltimore to Fresno flights
Dulles Intl to Monterey flights
Baltimore to Long Beach flights
Dulles Intl to Santa Barbara flights
Dulles Intl to Santa Rosa flights
Dulles Intl to Medford flights
Reagan-National to Santa Barbara flights
Reagan-National to Long Beach flights
Reagan-National to Monterey flights
Baltimore to Monterey flights

Top 8 airlines flying from Reagan-National to San Diego

Discover the top 8 airlines that operate flights from Reagan-National to San Diego. 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$247FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$162Average$222FlexibilityNo cancel feeOn-time65%
DeltaCheapest$258Average$371FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$258Average$378FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$267Average$417FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$270Average$414FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$298Average$448FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$333Average$492FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.