San Diego

$124+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
jun. 17 — jun. 241
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 February or January, booked 75 days in advance, depart on a Wednesday or Friday and return on a Tuesday

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 junio 12, 2025.

Round-trip from

$248
(Southwest)

One-way from

$124
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$358

Good round-trip deal

$336 or less

Good one-way deal

$159 or less
From Washington, D.C. Reagan-National to San Diego
One-way flight from Washington, D.C. Reagan-National to San Diego
Highest demand for flights based on searches. 4% potential increase in price ($16 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Washington, D.C. Reagan-National to San Diego.
Price to beat on a one-way flight from Washington, D.C. Reagan-National to San Diego.

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 junio 12, 2025.

This Southwest deal was found by Cheapflights users on 6/10. 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.
mar. 9/95:45 pmDCA - SAN
1 stop7h 05mSouthwest
mar. 9/167:05 amSAN - DCA
1 stop6h 55mSouthwest
Deal found 6/10$248
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
jue. 10/301:00 pmDCA - SAN
1 stop10h 08mFrontier
sáb. 11/16:25 amSAN - DCA
1 stop7h 36mFrontier
Deal found 6/9$254
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/88:59 amDCA - SAN
Nonstop5h 47mAlaska Airlines
sáb. 11/151:00 pmSAN - DCA
Nonstop5h 05mAlaska Airlines
Deal found 6/10$257
This JetBlue deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/911:45 amDCA - SAN
1 stop11h 04mJetBlue
mar. 7/159:00 pmSAN - DCA
1 stop10h 59mJetBlue
Deal found 6/12$267
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/127:00 amDCA - SAN
1 stop8h 48mUnited Airlines
vie. 8/1510:15 amSAN - DCA
1 stop7h 41mUnited Airlines
Deal found 6/10$272
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/1212:20 pmDCA - SAN
1 stop10h 06mDelta
sáb. 8/2310:40 pmSAN - DCA
1 stop6h 55mDelta
Deal found 6/10$277
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/45:00 amDCA - SAN
1 stop7h 04mAmerican Airlines
mar. 8/126:16 amSAN - DCA
1 stop7h 00mAmerican Airlines
Deal found 6/11$278
This SmartFares deal was found by Cheapflights users on 6/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/119:59 amDCA - SAN
Nonstop5h 21mHawaiian Airlines
dom. 9/141:41 pmSAN - DCA
Nonstop5h 18mHawaiian Airlines
Deal found 6/10$281

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 junio 12, 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

mar. 9/9

5:45 pm-9:50 pm

1 stop7h 05m

San Diego

mar. 9/16

7:05 am-5:00 pm

1 stop6h 55m

$248

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mié. 8/20

9:59 am-12:20 pm

Nonstop5h 21m

San Diego

sáb. 8/23

1:41 pm-9:59 pm

Nonstop5h 18m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

jue. 8/21

1:00 pm-7:31 pm

1 stop9h 31m

San Diego

dom. 8/24

6:29 am-4:59 pm

1 stop7h 30m

$258

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mié. 7/9

11:45 am-7:49 pm

1 stop11h 04m

San Diego

mar. 7/15

9:00 pm-10:59 am

1 stop10h 59m

$267

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mar. 8/12

7:00 am-12:48 pm

1 stop8h 48m

San Diego

vie. 8/15

10:15 am-8:56 pm

1 stop7h 41m

$272

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mar. 8/12

12:20 pm-7:26 pm

1 stop10h 06m

San Diego

sáb. 8/23

10:40 pm-8:35 am

1 stop6h 55m

$277

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

lun. 8/4

5:00 am-9:04 am

1 stop7h 04m

San Diego

mar. 8/12

6:16 am-4:16 pm

1 stop7h 00m

$278

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

sáb. 8/9

8:59 am-11:20 am

Nonstop5h 21m

San Diego

sáb. 8/16

12:42 pm-8:59 pm

Nonstop5h 17m

$288

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

sáb. 7/19

6:00 pm-11:02 pm

1 stop8h 02m

San Diego

lun. 7/21

12:42 pm-8:59 pm

Nonstop5h 17m

$414

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

mar. 8/12

7:00 am-12:48 pm

1 stop8h 48m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 18 results
1
2

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 June 9, 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 junio 12, 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 12% 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 June 8, 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.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 junio 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Washington, D.C. to San Diego by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Currently priced at $248, Southwest will fly you from Washington, D.C. Reagan-National Airport to San Diego and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and Frontier - these airlines can fly you to your destination from $257 and $258, respectively. Southwest is currently priced 33% 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 United Airlines ($124), Frontier ($127), and Southwest ($129).

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

    On average you can expect to pay $1,011 for a flight from Washington, D.C. Reagan-National Airport to San Diego. The cheapest flight overall is $128 while the most popular route, (Washington, D.C. Reagan-National - San Diego) is currently priced at $248.

  • 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 Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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.

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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$147Average$264FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$237Average$362FlexibilityNo cancel feeOn-time85%
DeltaCheapest$256Average$373FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$418FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$267Average$373FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$267Average$392FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$332Average$494FlexibilityNo cancel feeOn-time63%

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.