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$155+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Jun 3 — Jun 101
Wed 6/3
Wed 6/10
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 January or September, booked 80 days in advance, depart on a Thursday 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 May 4, 2026.

This Southwest deal was found by Cheapflights users on 5/3. 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.
Tue 6/166:55 pm
DCA
-
SAN
1 stop7h 25m
Southwest
Tue 6/239:55 pm
SAN
-
DCA
1 stop11h 05m
Southwest
Deal found 5/3$297
This Southwest deal was found by Cheapflights users on 5/3. 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.
Tue 8/2512:05 pm
DCA
-
SAN
2 stops9h 15m
Southwest
Wed 9/26:35 am
SAN
-
DCA
1 stop7h 15m
Southwest
Deal found 5/3$298
This Expedia deal was found by Cheapflights users on 4/30. 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 5/207:00 am
DCA
-
SAN
1 stop19h 50m
Frontier
Sat 5/236:25 am
SAN
-
DCA
1 stop27h 34m
Frontier
Deal found 4/30$300
This CheapOair deal was found by Cheapflights users on 5/3. 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 6/107:00 am
DCA
-
SAN
1 stop19h 53m
Frontier
Mon 6/156:25 am
SAN
-
DCA
1 stop12h 34m
Frontier
Deal found 5/3$301
This Southwest deal was found by Cheapflights users on 5/3. 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.
Tue 6/211:40 am
DCA
-
SAN
2 stops8h 55m
Southwest
Wed 6/109:55 pm
SAN
-
DCA
1 stop11h 05m
Southwest
Deal found 5/3$302
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/26:00 pm
DCA
-
SAN
1 stop17h 42m
Frontier
Sat 6/64:17 pm
SAN
-
DCA
2 stops17h 42m
Frontier
Deal found 4/30$303
This Expedia deal was found by Cheapflights users on 4/30. 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.
Sun 5/246:00 pm
DCA
-
SAN
1 stop17h 42m
Multiple Airlines
Wed 5/2712:43 pm
SAN
-
DCA
Nonstop5h 17m
Multiple Airlines
Deal found 4/30$304
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/11:59 pm
DCA
-
SAN
2 stops21h 48m
Frontier
Wed 6/39:37 am
SAN
-
DCA
1 stop9h 21m
Frontier
Deal found 5/4$307
This Expedia deal was found by Cheapflights users on 5/4. 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 6/38:59 am
DCA
-
SAN
Nonstop5h 43m
Multiple Airlines
Wed 6/106:25 am
SAN
-
DCA
1 stop27h 32m
Multiple Airlines
Deal found 5/4$309
This Frontier deal was found by Cheapflights users on 4/30. 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 5/91:59 pm
DCA
-
SAN
1 stop12h 51m
Frontier
Tue 5/126:25 am
SAN
-
DCA
1 stop12h 33m
Frontier
Deal found 4/30$311
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sat 5/303:40 pm
DCA
-
SAN
1 stop7h 45m
Southwest
Wed 6/36:45 am
SAN
-
DCA
2 stops11h 00m
Southwest
Deal found 4/30$312
This Trip.com deal was found by Cheapflights users on 4/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:00 am
DCA
-
SAN
1 stop29h 09m
Frontier
Sun 6/286:25 am
SAN
-
DCA
1 stop27h 32m
Frontier
Deal found 4/30$313

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 May 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$290
(Frontier)

One-way from

$155
(Frontier)

Popular in

November

Cheapest in

January

Average price

$422

Good round-trip deal

$432 or less

Good one-way deal

$268 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. 4% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 4, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 7/1

4:55 pm-10:40 pm

2 stops8h 45m

San Diego

Sun 7/5

10:40 pm-8:45 am

1 stop7h 05m

$352
Quickest round-trip

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 6/8

8:59 am-11:42 am

Nonstop5h 43m

San Diego

Tue 6/16

12:42 pm-9:00 pm

Nonstop5h 18m

$397

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 6/18

4:10 pm-10:25 pm

1 stop9h 15m

San Diego

Tue 6/23

9:55 pm-12:00 pm

1 stop11h 05m

$422

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 5/28

8:59 am-11:42 am

Nonstop5h 43m

San Diego

Tue 6/2

7:15 am-9:59 pm

1 stop11h 44m

$427

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 5/25

12:40 pm-6:55 pm

1 stop9h 15m

San Diego

Wed 5/27

7:10 am-6:10 pm

2 stops8h 00m

$427

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 5/25

2:00 pm-8:00 pm

2 stops9h 00m

San Diego

Tue 5/26

10:40 pm-8:25 am

1 stop6h 45m

$442

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 6/26

12:35 pm-6:45 pm

2 stops9h 10m

San Diego

Fri 7/3

10:40 pm-9:30 am

1 stop7h 50m

$452

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sun 6/14

2:00 pm-9:00 pm

2 stops10h 00m

San Diego

Sat 6/20

8:25 pm-8:30 am

2 stops9h 05m

$457

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 7/22

11:35 am-8:10 pm

2 stops11h 35m

San Diego

Sat 7/25

8:25 pm-8:30 am

2 stops9h 05m

$468

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 6/5

2:00 pm-8:55 pm

2 stops9h 55m

San Diego

Sun 6/7

6:20 am-6:15 pm

2 stops8h 55m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Super.comPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 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?

The best time to book flights from Washington, D.C. Reagan-National Airport to San Diego is 79 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 $297). Flying from Washington, D.C. Reagan-National Airport to San Diego in November is currently the most expensive (average of $439). 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 May 4, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to San Diego as you normally would.

How much does it cost to fly round-trip from Washington, D.C. Reagan-National Airport to San Diego?

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 May 4, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andHawaiian 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
7.9
Good
12,325 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Alaska Airlines
7.9
Good
12,325 reviews
Alaska Airlines
7.9
Good
12,325 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Southwest
7.9
Good
4,307 reviews
Alaska Airlines
7.9
Good
12,325 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Hawaiian Airlines
7.8
Good
2,837 reviews
Alaska Airlines
7.9
Good
12,325 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
American Airlines
7.1
Good
11,670 reviews
Alaska Airlines
7.9
Good
12,325 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Frontier
5.6
Fair
2,965 reviews
Alaska Airlines
7.9
Good
12,325 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

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 is 1 flight 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 $397, Southwest can have you in San Diego from Washington, D.C. Reagan-National Airport in 5h 43m. 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 $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 Hawaiian Airlines and American Airlines - these airlines can fly you to your destination from $179 and $208, respectively. Frontier is currently priced 65% 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), Hawaiian Airlines ($119), and American Airlines ($128).

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

    On average you can expect to pay $736 for a flight from Washington, D.C. Reagan-National Airport to San Diego. The cheapest flight overall is $183 while the most popular route, (Washington, D.C. Reagan-National - San Diego) is currently priced at $241.

  • 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 $297). Flying from Washington, D.C. Reagan-National Airport to San Diego in November is currently the most expensive (average of $439). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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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 May 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$281FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$179Average$378FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$208Average$376FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$246Average$377FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$250Average$414FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$256Average$433FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$508FlexibilityNo cancel feeOn-timeN/A

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