HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$137+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
mars 5 — mars 121
jeu. 3/5
jeu. 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Diego are usually found in January or February, 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 février 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
lun. 3/96:00 pm
DCA
-
SAN
1 stop9h 08m
Frontier
dim. 3/159:44 pm
SAN
-
DCA
2 stops36h 18m
Frontier
Deal found 2/1$239
This Expedia deal was found by Cheapflights users on 2/2. 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.
lun. 2/96:00 pm
DCA
-
SAN
1 stop30h 41m
Frontier
mer. 2/117:11 am
SAN
-
DCA
1 stop27h 04m
Frontier
Deal found 2/2$242
This Expedia deal was found by Cheapflights users on 2/2. 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.
lun. 2/236:00 pm
DCA
-
SAN
1 stop9h 08m
Multiple Airlines
sam. 2/2812:45 pm
SAN
-
DCA
Nonstop5h 17m
Multiple Airlines
Deal found 2/2$243
This Expedia deal was found by Cheapflights users on 1/31. 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.
lun. 2/166:00 pm
DCA
-
SAN
1 stop9h 08m
Frontier
sam. 2/216:25 am
SAN
-
DCA
1 stop7h 34m
Frontier
Deal found 1/31$244
This Frontier deal was found by Cheapflights users on 2/1. 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.
jeu. 2/192:00 pm
DCA
-
SAN
1 stop13h 08m
Frontier
dim. 2/229:09 am
SAN
-
DCA
1 stop9h 50m
Frontier
Deal found 2/1$245
This CheapOair deal was found by Cheapflights users on 2/2. 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.
mer. 2/188:00 am
DCA
-
SAN
1 stop16h 41m
Frontier
dim. 2/226:25 am
SAN
-
DCA
1 stop27h 35m
Frontier
Deal found 2/2$246
This CheapOair deal was found by Cheapflights users on 2/2. 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.
sam. 3/76:00 pm
DCA
-
SAN
1 stop9h 08m
Multiple Airlines
dim. 3/158:59 pm
SAN
-
DCA
1 stop11h 05m
Multiple Airlines
Deal found 2/2$247
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
lun. 2/236:00 pm
DCA
-
SAN
2 stops29h 24m
Frontier
jeu. 2/266:25 am
SAN
-
DCA
1 stop7h 34m
Frontier
Deal found 2/1$248
This WAYA deal was found by Cheapflights users on 2/1. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 2/216:00 pm
DCA
-
SAN
1 stop9h 08m
Multiple Airlines
mar. 2/2412:45 pm
SAN
-
DCA
Nonstop5h 17m
Multiple Airlines
Deal found 2/1$249
This Trip.com deal was found by Cheapflights users on 2/1. 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.
mar. 2/102:00 pm
DCA
-
SAN
1 stop10h 41m
Frontier
mar. 2/177:11 am
SAN
-
DCA
1 stop27h 04m
Frontier
Deal found 2/1$250
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/96:00 pm
DCA
-
SAN
1 stop30h 41m
Frontier
ven. 3/66:25 am
SAN
-
DCA
1 stop12h 34m
Frontier
Deal found 2/3$252

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 février 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(Kiwi.com)

One-way from

$137
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$301

Good round-trip deal

$277 or less

Good one-way deal

$158 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. 8% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 février 3, 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

sam. 4/25

12:00 pm-5:55 pm

1 stop8h 55m

San Diego

mer. 4/29

8:35 am-11:00 pm

2 stops11h 25m

$262

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

lun. 3/23

6:00 am-10:44 am

1 stop7h 44m

San Diego

mar. 3/31

10:10 pm-8:43 am

1 stop7h 33m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mer. 4/1

6:00 am-10:44 am

1 stop7h 44m

San Diego

jeu. 4/9

11:54 am-11:35 pm

1 stop8h 41m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mar. 3/3

6:10 am-1:35 pm

2 stops10h 25m

San Diego

sam. 3/7

7:10 am-6:35 pm

1 stop8h 25m

$272

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mer. 3/4

9:30 am-4:45 pm

2 stops10h 15m

San Diego

sam. 3/7

7:10 am-6:35 pm

1 stop8h 25m

$272

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mer. 4/15

8:59 am-11:39 am

Nonstop5h 40m

San Diego

mar. 4/21

12:42 pm-9:00 pm

Nonstop5h 18m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mer. 3/4

8:59 am-11:43 am

Nonstop5h 44m

San Diego

lun. 3/16

12:45 pm-9:02 pm

Nonstop5h 17m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mar. 3/3

8:59 am-11:43 am

Nonstop5h 44m

San Diego

mar. 3/17

12:45 pm-9:02 pm

Nonstop5h 17m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mer. 4/1

12:00 pm-7:40 pm

1 stop10h 40m

San Diego

ven. 4/3

6:50 am-6:10 pm

1 stop8h 20m

$287

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

lun. 3/2

6:00 am-12:50 pm

2 stops9h 50m

San Diego

jeu. 3/5

8:35 am-8:55 pm

2 stops9h 20m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 20 results
1
2

Compare providers for flights from Reagan-National to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Reagan-National to San Diego in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Reagan-National Airport-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to San Diego from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to San Diego

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

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to San Diego. Price data was last updated on January 30, 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 $225). 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 février 3, 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.

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 février 3, 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
11,834 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

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
11,834 reviews
Alaska Airlines
8.0
Very good
11,834 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

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
8,139 reviews
Alaska Airlines
8.0
Very good
11,834 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

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
2,831 reviews
Alaska Airlines
8.0
Very good
11,834 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

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
11,218 reviews
Alaska Airlines
8.0
Very good
11,834 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

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
3,051 reviews
Alaska Airlines
8.0
Very good
11,834 reviews

Entertainment

7.0

Crew

8.5

Comfort

7.8

Food

7.1

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 2 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 $267, Southwest can have you in San Diego from Washington, D.C. Reagan-National Airport in 7h 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 $1,153 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 $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, 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 $225). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to San Diego

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

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 février 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$259FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$216Average$383FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$225Average$426FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$237Average$372FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$241Average$358FlexibilityNo cancel feeOn-time75%
DeltaCheapest$244Average$456FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$266Average$396FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights