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$138+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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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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 Saturday and return on a Friday

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 January 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Sun 2/152:00 pm
DCA
-
SAN
1 stop13h 08m
Frontier
Tue 2/247:11 am
SAN
-
DCA
1 stop27h 04m
Frontier
Deal found 1/20$240
This Frontier deal was found by Cheapflights users on 1/20. 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 2/212:00 pm
DCA
-
SAN
1 stop13h 08m
Frontier
Mon 2/236:25 am
SAN
-
DCA
1 stop7h 34m
Frontier
Deal found 1/20$241
This Trip.com deal was found by Cheapflights users on 1/20. 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.
Thu 2/198:00 am
DCA
-
SAN
2 stops27h 50m
Frontier
Mon 2/2311:30 am
SAN
-
DCA
1 stop22h 45m
Frontier
Deal found 1/20$242
This Expedia deal was found by Cheapflights users on 1/20. 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 3/258:00 am
DCA
-
SAN
1 stop19h 09m
Multiple Airlines
Tue 4/78:25 pm
SAN
-
DCA
1 stop10h 24m
Multiple Airlines
Deal found 1/20$243
This Expedia deal was found by Cheapflights users on 1/19. 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.
Sat 3/78:59 am
DCA
-
SAN
Nonstop5h 44m
Multiple Airlines
Wed 3/116:25 am
SAN
-
DCA
1 stop7h 34m
Multiple Airlines
Deal found 1/19$244
This Frontier deal was found by Cheapflights users on 1/19. 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 3/186:00 pm
DCA
-
SAN
1 stop9h 09m
Frontier
Mon 3/239:00 am
SAN
-
DCA
1 stop9h 59m
Frontier
Deal found 1/19$245
This CheapOair deal was found by Cheapflights users on 1/20. 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 3/258:00 am
DCA
-
SAN
1 stop19h 09m
Frontier
Thu 4/26:25 am
SAN
-
DCA
1 stop26h 37m
Frontier
Deal found 1/20$246
This Expedia deal was found by Cheapflights users on 1/20. 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.
Thu 3/52:00 pm
DCA
-
SAN
1 stop21h 05m
Multiple Airlines
Sun 3/88:44 pm
SAN
-
DCA
1 stop8h 19m
Multiple Airlines
Deal found 1/20$247
This Expedia deal was found by Cheapflights users on 1/19. 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 2/205:06 pm
DCA
-
SAN
1 stop9h 53m
Multiple Airlines
Tue 2/247:11 am
SAN
-
DCA
1 stop11h 48m
Multiple Airlines
Deal found 1/19$248
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 2/182:00 pm
DCA
-
SAN
2 stops28h 17m
Frontier
Sat 2/286:25 am
SAN
-
DCA
1 stop12h 34m
Frontier
Deal found 1/21$249
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 3/238:00 am
DCA
-
SAN
1 stop19h 09m
Frontier
Tue 3/316:25 am
SAN
-
DCA
1 stop12h 34m
Frontier
Deal found 1/19$250
This CheapOair deal was found by Cheapflights users on 1/19. 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.
Fri 2/62:00 pm
DCA
-
SAN
1 stop13h 08m
Frontier
Sun 2/88:16 pm
SAN
-
DCA
1 stop22h 43m
Frontier
Deal found 1/19$251

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 January 21, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$240
(Kiwi.com)

One-way from

$138
(Trip.com)

Popular in

November

Cheapest in

February

Average price

$297

Good round-trip deal

$277 or less

Good one-way deal

$198 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 ($31 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 January 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 January 21, 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

Reagan-National

Fly to

San Diego

Route

Depart

Return

Price

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 2/16

8:59 am-11:43 am

Nonstop5h 44m

San Diego

Tue 2/24

12:45 pm-9:02 pm

Nonstop5h 17m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 3/31

9:00 am-4:31 pm

1 stop10h 31m

San Diego

Wed 4/1

10:10 pm-8:43 am

1 stop7h 33m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 4/4

5:35 pm-10:25 pm

1 stop7h 50m

San Diego

Sat 4/11

10:40 pm-8:50 am

1 stop7h 10m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 4/17

8:59 am-11:39 am

Nonstop5h 40m

San Diego

Wed 4/22

12:46 pm-9:00 pm

Nonstop5h 14m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sun 3/22

8:59 am-11:39 am

Nonstop5h 40m

San Diego

Tue 3/31

12:42 pm-9:00 pm

Nonstop5h 18m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Mon 3/9

11:55 am-8:00 pm

2 stops11h 05m

San Diego

Sat 3/14

6:45 am-5:20 pm

1 stop7h 35m

$261

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

Tue 3/3

8:39 am-9:59 pm

1 stop10h 20m

$267

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

Wed 2/25

10:09 pm-5:59 pm

1 stop16h 50m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 4/4

6:05 am-1:29 pm

1 stop10h 24m

San Diego

Mon 4/13

9:45 pm-9:09 am

1 stop8h 24m

$276

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 3/12

8:59 am-11:43 am

Nonstop5h 44m

San Diego

Sat 3/14

12:45 pm-9:02 pm

Nonstop5h 17m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 22 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust 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 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 January 16, 2026.

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 January 21, 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 January 21, 2026.
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
11,775 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,775 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,089 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,174 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Frontier
5.7
Fair
3,057 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 44m. 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 American Airlines and Southwest - these airlines can fly you to your destination from $216 and $225, 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 $868 for a flight from Washington, D.C. Reagan-National Airport to San Diego. The cheapest flight overall is $157 while the most popular route, (Washington, D.C. Reagan-National - San Diego) is currently priced at $160.

  • 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
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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$260FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$216Average$378FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$225Average$426FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$237Average$372FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$244Average$360FlexibilityNo cancel feeOn-time75%
DeltaCheapest$244Average$456FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$396FlexibilityNo cancel feeOn-time69%

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