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$148+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
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Find cheap flights from Reagan-National to San Diego with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Diego are usually found in February or January, booked 75 days in advance, depart on a Friday or Wednesday and return on a Thursday

Cheap 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 December 9, 2025.

This Frontier deal was found by Cheapflights users on 12/8. 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.
Mon 12/158:00 amDCA - SAN
1 stop14h 15mFrontier
Wed 12/176:34 amSAN - DCA
1 stop12h 25mFrontier
Deal found 12/8$254
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Thu 12/118:00 amDCA - SAN
1 stop14h 15mFrontier
Mon 12/156:34 amSAN - DCA
1 stop27h 32mFrontier
Deal found 12/7$255
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Thu 12/116:00 pmDCA - SAN
1 stop28h 15mFrontier
Sun 12/146:34 amSAN - DCA
1 stop27h 32mFrontier
Deal found 12/7$259
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 12/168:00 amDCA - SAN
2 stops36h 53mFrontier
Wed 1/77:00 amSAN - DCA
1 stop11h 59mFrontier
Deal found 12/6$263
This JetBlue deal was found by Cheapflights users on 12/6. 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.
Mon 12/2911:20 amDCA - SAN
1 stop10h 59mJetBlue
Sat 1/39:30 pmSAN - DCA
1 stop10h 05mJetBlue
Deal found 12/6$265
This Frontier deal was found by Cheapflights users on 12/7. 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 12/122:00 pmDCA - SAN
1 stop8h 15mFrontier
Wed 12/176:34 amSAN - DCA
1 stop12h 25mFrontier
Deal found 12/7$267
This Frontier deal was found by Cheapflights users on 12/6. 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.
Mon 12/156:00 pmDCA - SAN
1 stop8h 59mFrontier
Wed 12/246:25 amSAN - DCA
1 stop12h 34mFrontier
Deal found 12/6$274
This CheapOair deal was found by Cheapflights users on 12/5. 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 12/62:00 pmDCA - SAN
1 stop12h 59mFrontier
Sat 12/134:47 pmSAN - DCA
1 stop17h 19mFrontier
Deal found 12/5$275
This Frontier deal was found by Cheapflights users on 12/6. 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.
Thu 12/182:00 pmDCA - SAN
1 stop8h 15mFrontier
Thu 12/256:25 amSAN - DCA
1 stop12h 34mFrontier
Deal found 12/6$278
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Mon 12/86:00 pmDCA - SAN
1 stop8h 59mFrontier
Sun 12/146:34 amSAN - DCA
1 stop27h 32mFrontier
Deal found 12/7$279
This Frontier deal was found by Cheapflights users on 12/7. 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.
Thu 12/118:00 amDCA - SAN
1 stop14h 15mFrontier
Sat 12/136:34 amSAN - DCA
1 stop12h 25mFrontier
Deal found 12/7$284
This CheapOair deal was found by Cheapflights users on 12/8. 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.
Wed 12/176:00 pmDCA - SAN
1 stop7h 46mFrontier
Wed 12/244:47 pmSAN - DCA
1 stop17h 14mFrontier
Deal found 12/8$285

Find 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 December 9, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$252
(CheapOair)

One-way from

$148
(Priceline)

Popular in

November

Cheapest in

February

Average price

$378

Good round-trip deal

$297 or less

Good one-way deal

$259 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. 7% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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

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 December 9, 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

Mon 1/19

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Sat 1/24

12:53 pm-9:00 pm

Nonstop5h 07m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 2/25

8:59 am-11:43 am

Nonstop5h 44m

San Diego

Mon 3/9

12:45 pm-9:02 pm

Nonstop5h 17m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 1/20

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Wed 1/21

12:53 pm-9:00 pm

Nonstop5h 07m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 2/27

8:59 am-11:43 am

Nonstop5h 44m

San Diego

Tue 3/3

12:45 pm-9:02 pm

Nonstop5h 17m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 1/15

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Sat 1/17

12:53 pm-9:00 pm

Nonstop5h 07m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 1/9

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Mon 1/12

12:53 pm-9:00 pm

Nonstop5h 07m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 1/22

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Mon 1/26

12:53 pm-9:00 pm

Nonstop5h 07m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 2/2

8:59 am-11:56 am

Nonstop5h 57m

San Diego

Mon 2/9

12:53 pm-9:00 pm

Nonstop5h 07m

$297

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 3/5

8:59 am-11:43 am

Nonstop5h 44m

San Diego

Mon 3/16

12:45 pm-9:02 pm

Nonstop5h 17m

$297

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 1/5

8:59 am-11:51 am

Nonstop5h 52m

San Diego

Fri 1/9

7:00 am-5:56 pm

1 stop7h 56m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 21 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Washington, D.C. Reagan-National Airport-San Diego flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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 December 5, 2025.

The best time to book flights from Washington, D.C. Reagan-National Airport to San Diego is 75 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, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Diego (average of $130). Flying from Washington, D.C. Reagan-National Airport to San Diego in July is currently the most expensive (average of $222). 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 December 9, 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 at noon. If you’re flexible enough to do this you can expect to save up to 8% 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 December 6, 2025.

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to San Diego flight should consider departing on Sunday at noon 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 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 December 9, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Washington, D.C. Reagan-National Airport to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,415 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,415 reviews
Alaska Airlines
8.0
Very good
11,415 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,415 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,818 reviews
Alaska Airlines
8.0
Very good
11,415 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
11,044 reviews
Alaska Airlines
8.0
Very good
11,415 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,087 reviews
Alaska Airlines
8.0
Very good
11,415 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 3 flights from Washington, D.C. Reagan-National to San Diego per day from 7 different airlines.

  • How long is the flight from Washington, D.C. Reagan-National Airport to San Diego?

    For as low as $257, Alaska Airlines can have you in San Diego from Washington, D.C. Reagan-National Airport in 5h 57m. The distance between Washington, D.C. Reagan-National Airport and San Diego is about 2270 mi. All flights are typically nonstop.

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

    Currently priced at $130, Frontier will fly you from Washington, D.C. Reagan-National Airport to San Diego and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $216 and $234, respectively. Frontier is currently priced 64% 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 Frontier ($81), Alaska Airlines ($118), and Hawaiian Airlines ($119).

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

    On average you can expect to pay $705 for a flight from Washington, D.C. Reagan-National Airport to San Diego. The cheapest flight overall is $148 while the most popular route, (Washington, D.C. Reagan-National - San Diego) is currently priced at $150.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Diego (average of $130). Flying from Washington, D.C. Reagan-National Airport to San Diego in July is currently the most expensive (average of $222). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

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Alternative routes for Reagan-National to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Reagan-National to San Diego

Discover the top 7 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 December 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$273FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$216Average$450FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$234Average$384FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$237Average$376FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$255Average$362FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$257Average$406FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$437FlexibilityNo cancel feeOn-timeN/A

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