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$128+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 17 days in advance, depart on a Friday or Wednesday and return on a Thursday

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 September 17, 2025.

Round-trip from

$242
(Southwest)

One-way from

$128
(Hawaiian Airlines)

Popular in

April

Cheapest in

February

Average price

$342

Good round-trip deal

$311 or less

Good one-way deal

$158 or less
From Washington, D.C. Reagan-National to San Diego
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One-way flight from Washington, D.C. Reagan-National to San Diego
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Highest demand for flights based on searches. 7% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington, D.C. Reagan-National to San Diego.
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Price to beat on a one-way flight from Washington, D.C. Reagan-National to San Diego.
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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 September 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/17. 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 10/316:31 pmDCA - SAN
1 stop8h 19mFrontier
Thu 11/69:14 amSAN - DCA
2 stops9h 45mFrontier
Deal found 9/17$242
This Booking.com deal was found by Cheapflights users on 9/15. 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.
Fri 10/36:31 pmDCA - SAN
1 stop8h 22mFrontier
Sun 10/59:03 pmSAN - DCA
1 stop12h 07mFrontier
Deal found 9/15$243
This Booking.com deal was found by Cheapflights users on 9/15. 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 9/237:00 amDCA - SAN
1 stop18h 24mFrontier
Thu 9/256:35 amSAN - DCA
1 stop26h 35mFrontier
Deal found 9/15$244
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/158:59 amDCA - SAN
Nonstop5h 28mAlaska Airlines
Sat 10/1812:12 pmSAN - DCA
Nonstop5h 17mAlaska Airlines
Deal found 9/14$245
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 11/158:15 amDCA - SAN
2 stops15h 09mFrontier
Tue 11/186:41 amSAN - DCA
1 stop12h 18mFrontier
Deal found 9/16$246
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:59 amDCA - SAN
Nonstop5h 28mHawaiian Airlines
Tue 10/289:28 amSAN - DCA
1 stop9h 31mHawaiian Airlines
Deal found 9/17$247
This Priceline deal was found by Cheapflights users on 9/15. 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.
Sat 9/201:00 pmDCA - SAN
1 stop12h 24mFrontier
Sat 9/277:15 amSAN - DCA
1 stop11h 44mFrontier
Deal found 9/15$248
This Frontier deal was found by Cheapflights users on 9/15. 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 9/297:00 amDCA - SAN
1 stop7h 09mFrontier
Mon 10/66:49 pmSAN - DCA
2 stops19h 10mFrontier
Deal found 9/15$249
This Frontier deal was found by Cheapflights users on 9/15. 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 10/176:31 pmDCA - SAN
1 stop8h 19mFrontier
Sun 10/1911:51 amSAN - DCA
2 stops21h 13mFrontier
Deal found 9/15$251
This Frontier deal was found by Cheapflights users on 9/15. 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 9/241:00 pmDCA - SAN
1 stop12h 24mFrontier
Sun 9/289:03 pmSAN - DCA
1 stop12h 07mFrontier
Deal found 9/15$252
This Frontier deal was found by Cheapflights users on 9/15. 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.
Sun 11/26:00 pmDCA - SAN
1 stop8h 50mFrontier
Sat 11/86:41 amSAN - DCA
1 stop7h 18mFrontier
Deal found 9/15$253
This Priceline deal was found by Cheapflights users on 9/16. 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.
Mon 9/296:00 pmDCA - SAN
1 stop8h 53mFrontier
Fri 10/310:20 amSAN - DCA
1 stop8h 39mFrontier
Deal found 9/16$254

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 September 17, 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 11/5

11:35 am-6:55 pm

2 stops10h 20m

San Diego

Tue 11/18

10:30 am-11:55 pm

2 stops10h 25m

$247

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 11/25

6:10 am-1:10 pm

2 stops10h 00m

San Diego

Tue 12/2

7:00 am-8:05 pm

2 stops10h 05m

$247

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 12/11

11:35 am-6:55 pm

2 stops10h 20m

San Diego

Sun 12/14

6:35 am-5:30 pm

1 stop7h 55m

$248

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 11/13

8:59 am-11:45 am

Nonstop5h 46m

San Diego

Tue 11/18

1:00 pm-9:05 pm

Nonstop5h 05m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 11/6

6:55 am-12:40 pm

1 stop8h 45m

San Diego

Wed 11/12

10:30 am-11:55 pm

2 stops10h 25m

$262

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 11/1

6:58 pm-9:40 am

1 stop17h 42m

San Diego

Sat 11/8

1:00 pm-9:05 pm

Nonstop5h 05m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 11/15

5:53 pm-11:59 pm

1 stop9h 06m

San Diego

Tue 11/18

1:00 pm-9:05 pm

Nonstop5h 05m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 3/3

8:00 am-1:18 pm

1 stop8h 18m

San Diego

Wed 3/4

10:30 pm-8:49 am

1 stop7h 19m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 10/17

12:55 pm-6:10 pm

1 stop8h 15m

San Diego

Mon 10/20

10:30 pm-8:58 am

1 stop7h 28m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 10/15

8:59 am-11:27 am

Nonstop5h 28m

San Diego

Wed 10/22

12:12 pm-8:29 pm

Nonstop5h 17m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results
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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 September 12, 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 September 17, 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 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 September 14, 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.

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 September 17, 2025.
See what other customers who have flown with Alaska Airlines, Hawaiian Airlines, and United 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
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

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
2,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

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.
United Airlines
7.4
Good
8,924 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

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
3,174 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

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, Southwest can have you in San Diego from Washington, D.C. Reagan-National Airport in 5h 46m. The distance between Washington, D.C. Reagan-National Airport and San Diego is about 2270 mi. This flight may include one or multiple stops.

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

    Currently priced at $148, 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 Hawaiian Airlines - these airlines can fly you to your destination from $222 and $237, respectively. Frontier is currently priced 59% 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 Hawaiian Airlines ($128), Southwest ($134), and Alaska Airlines ($139).

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

    On average you can expect to pay $350 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 $175.

  • 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$267FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$222Average$480FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$237Average$373FlexibilityNo cancel feeOn-time85%
DeltaCheapest$256Average$415FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$256Average$385FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$257Average$358FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$271Average$432FlexibilityNo cancel feeOn-time69%

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