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Cheap flights from Washington, D.C. Reagan-National Airport to San Diego from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to San Diego departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
8:59 am - 11:34 amDCA-SAN
5h 35mnonstop
Alaska Airlines Logo
9:59 pm - 5:32 pmSAN-DCA
16h 33m1 stop
$247Alaska Airlines
Find Deal
Sat, Feb 28 - Tue, Mar 3
Frontier Logo
8:00 am - 5:53 pmDCA-SAN
12h 53m2 stops
Frontier Logo
4:47 pm - 1:01 pmSAN-DCA
17h 14m1 stop
$249Frontier
Find Deal
Tue, Dec 16 - Thu, Dec 18
Frontier Logo
6:00 pm - 11:59 pmDCA-SAN
8h 59m1 stop
Frontier Logo
10:52 am - 1:04 pmSAN-DCA
23h 12m2 stops
$250Frontier
Find Deal
Fri, Jan 2 - Mon, Jan 12
Frontier Logo
6:00 pm - 11:59 pmDCA-SAN
8h 59m1 stop
Frontier Logo
6:25 am - 4:59 pmSAN-DCA
7h 34m1 stop
$251Frontier
Find Deal
Sat, Jan 3 - Sun, Jan 11
Frontier Logo
2:00 pm - 10:46 pmDCA-SAN
11h 46m1 stop
Frontier Logo
6:25 am - 4:59 pmSAN-DCA
7h 34m1 stop
$252Frontier
Find Deal
Wed, Feb 11 - Mon, Feb 23
Alaska Airlines Logo
8:59 am - 11:53 amDCA-SAN
5h 54mnonstop
Alaska Airlines Logo
12:52 pm - 9:02 pmSAN-DCA
5h 10mnonstop
$254Alaska Airlines
Find Deal
Thu, Dec 4 - Sun, Dec 14
American Airlines Logo
9:39 am - 2:21 pmDCA-SAN
7h 42m1 stop
American Airlines Logo
7:00 am - 5:23 pmSAN-DCA
7h 23m1 stop
$256American Airlines
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Fri, Feb 13 - Tue, Feb 17
Delta Logo
6:02 am - 10:26 amDCA-SAN
7h 24m1 stop
Delta Logo
10:00 pm - 8:41 amSAN-DCA
7h 41m1 stop
$257Delta
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Wed, Dec 10 - Wed, Dec 10
Hawaiian Airlines Logo
8:59 am - 11:53 amDCA-SAN
5h 54mnonstop
Hawaiian Airlines Logo
12:52 pm - 9:02 pmSAN-DCA
5h 10mnonstop
$283Hawaiian Airlines
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Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
7:00 am - 11:57 amDCA-SAN
7h 57m1 stop
American Airlines Logo
7:30 pm - 7:00 amSAN-DCA
8h 30m1 stop
$286American Airlines
Find Deal
Sat, Dec 13 - Sun, Dec 28

Southwest flights from Washington, D.C. Reagan-National Airport to San Diego

Our best Southwest deals on Washington, D.C. Reagan-National Airport to San Diego flight tickets
Southwest
Dec 4
DCA4:15 pmWashington, D.C. Reagan-National
7h 50m
1 stop
SAN9:05 pmSan Diego
Dec 9
SAN8:40 amSan Diego
9h 05m
2 stops
DCA8:45 pmWashington, D.C. Reagan-National
$258
Find similar
Southwest
Dec 12
DCA6:00 amWashington, D.C. Reagan-National
8h 30m
2 stops
SAN11:30 amSan Diego
Dec 17
SAN6:40 amSan Diego
9h 05m
2 stops
DCA6:45 pmWashington, D.C. Reagan-National
$267
Find similar
Southwest
Dec 24
DCA6:00 amWashington, D.C. Reagan-National
11h 25m
1 stop
SAN2:25 pmSan Diego
Jan 2
SAN6:35 amSan Diego
13h 20m
1 stop
DCA10:55 pmWashington, D.C. Reagan-National
$268
Find similar

American Airlines flights from Washington, D.C. Reagan-National Airport to San Diego

Our best American Airlines deals on Washington, D.C. Reagan-National Airport to San Diego flight tickets
American Airlines
Feb 13
DCA9:39 amWashington, D.C. Reagan-National
7h 42m
1 stop
SAN2:21 pmSan Diego
Feb 17
SAN7:00 amSan Diego
7h 23m
1 stop
DCA5:23 pmWashington, D.C. Reagan-National
$256
Find similar
American Airlines
Dec 13
DCA7:00 amWashington, D.C. Reagan-National
7h 57m
1 stop
SAN11:57 amSan Diego
Dec 28
SAN7:30 pmSan Diego
8h 30m
1 stop
DCA7:00 amWashington, D.C. Reagan-National
$286
Find similar
American Airlines
Dec 12
DCA6:57 amWashington, D.C. Reagan-National
7h 55m
1 stop
SAN11:52 amSan Diego
Dec 28
SAN7:30 pmSan Diego
8h 30m
1 stop
DCA7:00 amWashington, D.C. Reagan-National
$306
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated November 6, 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

Fly to

Route

Depart

Return

Price

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 2/28

8:59 am-11:34 am

Nonstop5h 35m

San Diego

Tue 3/3

9:59 pm-5:32 pm

1 stop16h 33m

$247

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Tue 12/16

8:00 am-5:53 pm

2 stops12h 53m

San Diego

Thu 12/18

4:47 pm-1:01 pm

1 stop17h 14m

$249

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 1/2

6:00 pm-11:59 pm

1 stop8h 59m

San Diego

Mon 1/12

10:52 am-1:04 pm

2 stops23h 12m

$250

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 1/3

6:00 pm-11:59 pm

1 stop8h 59m

San Diego

Sun 1/11

6:25 am-4:59 pm

1 stop7h 34m

$251

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 2/11

2:00 pm-10:46 pm

1 stop11h 46m

San Diego

Mon 2/23

6:25 am-4:59 pm

1 stop7h 34m

$252

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Thu 12/4

8:59 am-11:53 am

Nonstop5h 54m

San Diego

Sun 12/14

12:52 pm-9:02 pm

Nonstop5h 10m

$254

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 2/13

9:39 am-2:21 pm

1 stop7h 42m

San Diego

Tue 2/17

7:00 am-5:23 pm

1 stop7h 23m

$256

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Wed 12/10

6:02 am-10:26 am

1 stop7h 24m

San Diego

Wed 12/10

10:00 pm-8:41 am

1 stop7h 41m

$257

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Fri 12/5

8:59 am-11:53 am

Nonstop5h 54m

San Diego

Mon 12/8

12:52 pm-9:02 pm

Nonstop5h 10m

$283

Washington, D.C.San Diego

DCA - SAN

DCASAN

Washington, D.C. Reagan-National

Sat 12/13

7:00 am-11:57 am

1 stop7h 57m

San Diego

Sun 12/28

7:30 pm-7:00 am

1 stop8h 30m

$286

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of February, then departing from Washington, D.C. Reagan-National Airport during the month January is also very affordable. Most momondo users find prices during this month for around $321.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Washington, D.C. Reagan-National Airport to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $392. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $473. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $339. Flights at noon are often more expensive with an average ticket price of $503.

What is the cheapest Washington, D.C. Reagan-National to San Diego flight route?

Fly from Washington, D.C. Reagan-National to San Diego for the best Washington, D.C. Reagan-National - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $366 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Washington, D.C. Reagan-National Airport for as low as $326 on momondo.

What cabin class options are available on Washington, D.C. Reagan-National to San Diego flights?

There are 4 cabin classes available to choose from on Washington, D.C. Reagan-National to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Reagan-National Airport to San Diego flights?

You could potentially save up to 28% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to San Diego flight.

How have Washington, D.C. Reagan-National Airport to San Diego flight prices changed over time?

As of November 2025, prices for Washington, D.C. Reagan-National Airport to San Diego flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National Airport to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to San Diego (DCA to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to San Diego

Best Price Found

$186

Fastest flight time

5h 35m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Washington, D.C. Reagan-National Airport in the past 72 hours is $186. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to San Diego found on momondo in the last 72 hours is $277.
The fastest flight from Washington, D.C. Reagan-National Airport to San Diego takes 5h 35m
Direct flights go from Washington, D.C. Reagan-National Airport to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • How far is Washington, D.C. Reagan-National to San Diego by plane?

    Washington, D.C. Reagan-National and San Diego are 2268.2 mi apart from one another. A reasonable flight in good conditions will take 5h 35m.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to San Diego Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to San Diego Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to San Diego Airport?

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. Reagan-National Airport to San Diego?

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to San Diego?

Best airlines flying from Washington, D.C. Reagan-National Airport to San Diego

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $149Free CancellationRating
5.8
3,116 reviews
Search Frontier flights
SouthwestPriceFrom $222Free CancellationRating
8.0
4,240 reviews
Search Southwest flights
Hawaiian AirlinesPriceFrom $237Free CancellationRating
7.8
2,804 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $247Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $254Free CancellationRating
8.0
11,241 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
8,001 reviews
Search Delta flights

  • Southwest Flights From Washington, D.C. Reagan-National Airport to San Diego

    Southwest flies from Washington, D.C. Reagan-National Airport to San Diego around 6 times per week, with 4,240 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Washington, D.C. Reagan-National Airport to San Diego in the last 72 hours was $222 (round-trip), much lower than the average airfare cost of $487 for Southwest flights on this route.

  • Alaska Airlines Flights From Washington, D.C. Reagan-National Airport to San Diego

    $254 is the best Alaska Airlines flight deal from Washington, D.C. Reagan-National Airport to San Diego found on momondo over the last 72 hours. The average Alaska Airlines ticket price found was closer to $361, however, with flight time and availability significantly affecting the price. Alaska Airlines (8.0/10 from 11,241 user reviews) flies into San Diego from Washington, D.C. Reagan-National Airport 3 times in an average week so prices can vary.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
Imperial Beach
La Mesa
Poway
Borrego Springs
San Ysidro
Lemon Grove
Alpine
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San Diego?

It is quick and easy to find Washington, D.C. to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

Can I find flights from Washington, D.C. to San Diego with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to San Diego flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to San Diego?

Once all potential Washington, D.C. to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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