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Cheap flights from San Diego to Washington, D.C. from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Washington, D.C. departing on 9/27. 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 San Diego to Washington, D.C.

Cheap round-trip flights

Frontier Logo
7:15 am - 12:10 pmSAN-DCA
25h 55m1 stop
Frontier Logo
1:00 pm - 10:24 pmDCA-SAN
12h 24m1 stop
$229Frontier
Find Deal
Wed, Oct 1 - Sat, Oct 4
Frontier Logo
7:15 am - 12:10 pmSAN-DCA
25h 55m1 stop
Frontier Logo
1:00 pm - 8:07 pmDCA-SAN
10h 07m1 stop
$230Frontier
Find Deal
Tue, Sep 9 - Thu, Sep 11
Frontier Logo
6:41 am - 9:59 pmSAN-DCA
12h 18m1 stop
Frontier Logo
7:00 am - 1:28 pmDCA-SAN
9h 28m1 stop
$231Frontier
Find Deal
Tue, Oct 28 - Wed, Nov 5
Hawaiian Airlines Logo
1:41 pm - 9:59 pmSAN-DCA
5h 18mnonstop
Hawaiian Airlines Logo
9:59 am - 12:20 pmDCA-SAN
5h 21mnonstop
$232Hawaiian Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
Delta Logo
8:00 am - 7:30 pmSAN-DCA
8h 30m1 stop
Delta Logo
2:40 pm - 8:47 pmDCA-SAN
9h 07m1 stop
$235Delta
Find Deal
Tue, Sep 23 - Fri, Oct 3
Hawaiian Airlines Logo
1:41 pm - 9:59 pmSAN-DCA
5h 18mnonstop
Hawaiian Airlines Logo
9:59 am - 12:20 pmDCA-SAN
5h 21mnonstop
$237Hawaiian Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 1
Alaska Airlines Logo
1:41 pm - 9:59 pmSAN-DCA
5h 18mnonstop
Alaska Airlines Logo
9:59 am - 12:20 pmDCA-SAN
5h 21mnonstop
$257Alaska Airlines
Find Deal
Wed, Sep 24 - Mon, Sep 29
Southwest Logo
7:35 am - 7:35 pmSAN-DCA
9h 00m2 stops
Southwest Logo
12:00 pm - 6:50 pmDCA-SAN
9h 50m1 stop
$262Southwest
Find Deal
Sat, Oct 4 - Wed, Oct 8
Alaska Airlines Logo
1:41 pm - 9:59 pmSAN-DCA
5h 18mnonstop
Alaska Airlines Logo
6:59 pm - 7:41 amDCA-SAN
15h 42m1 stop
$267Alaska Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
Southwest Logo
10:20 am - 8:45 pmSAN-DCA
7h 25m1 stop
Southwest Logo
6:00 am - 11:30 amDCA-SAN
8h 30m2 stops
$282Southwest
Find Deal
Wed, Nov 5 - Sun, Nov 9

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

Our best Hawaiian Airlines deals on San Diego to Washington, D.C. Reagan-National Airport flight tickets
Hawaiian Airlines
Sep 20
SAN1:41 pmSan Diego
5h 18m
DCA9:59 pmWashington, D.C. Reagan-National
Sep 27
DCA9:59 amWashington, D.C. Reagan-National
5h 21m
SAN12:20 pmSan Diego
$232
Find similar
Hawaiian Airlines
Sep 24
SAN1:41 pmSan Diego
5h 18m
DCA9:59 pmWashington, D.C. Reagan-National
Oct 1
DCA9:59 amWashington, D.C. Reagan-National
5h 21m
SAN12:20 pmSan Diego
$237
Find similar
Hawaiian Airlines
Sep 20
SAN1:41 pmSan Diego
5h 18m
DCA9:59 pmWashington, D.C. Reagan-National
Sep 27
DCA9:59 amWashington, D.C. Reagan-National
5h 21m
SAN12:20 pmSan Diego
$238
Find similar

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

Our best Alaska Airlines deals on San Diego to Washington, D.C. Reagan-National Airport flight tickets
Alaska Airlines
Sep 24
SAN1:41 pmSan Diego
5h 18m
DCA9:59 pmWashington, D.C. Reagan-National
Sep 29
DCA9:59 amWashington, D.C. Reagan-National
5h 21m
SAN12:20 pmSan Diego
$257
Find similar
Alaska Airlines
Sep 20
SAN1:41 pmSan Diego
5h 18m
DCA9:59 pmWashington, D.C. Reagan-National
Sep 27
DCA6:59 pmWashington, D.C. Reagan-National
15h 42m
1 stop
SAN7:41 amSan Diego
$267
Find similar
Alaska Airlines
Dec 13
SAN6:15 amSan Diego
8h 44m
1 stop
DCA5:59 pmWashington, D.C. Reagan-National
Dec 15
DCA6:59 pmWashington, D.C. Reagan-National
16h 40m
1 stop
SAN8:39 amSan Diego
$276
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Washington, D.C. Reagan-National Airport 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 August 28, 2025.
Use the filters below to find and compare flights from San Diego to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 10/1

7:15 am-12:10 pm

1 stop25h 55m

Washington, D.C. Reagan-National

Sat 10/4

1:00 pm-10:24 pm

1 stop12h 24m

$229

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 9/9

7:15 am-12:10 pm

1 stop25h 55m

Washington, D.C. Reagan-National

Thu 9/11

1:00 pm-8:07 pm

1 stop10h 07m

$230

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 10/28

6:41 am-9:59 pm

1 stop12h 18m

Washington, D.C. Reagan-National

Wed 11/5

7:00 am-1:28 pm

1 stop9h 28m

$231

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 9/20

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Sat 9/27

9:59 am-12:20 pm

Nonstop5h 21m

$232

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 9/23

8:00 am-7:30 pm

1 stop8h 30m

Washington, D.C. Reagan-National

Fri 10/3

2:40 pm-8:47 pm

1 stop9h 07m

$235

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 9/24

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Wed 10/1

9:59 am-12:20 pm

Nonstop5h 21m

$237

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 9/24

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Mon 9/29

9:59 am-12:20 pm

Nonstop5h 21m

$257

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 10/4

7:35 am-7:35 pm

2 stops9h 00m

Washington, D.C. Reagan-National

Wed 10/8

12:00 pm-6:50 pm

1 stop9h 50m

$262

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 9/20

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Sat 9/27

6:59 pm-7:41 am

1 stop15h 42m

$267

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 11/5

10:20 am-8:45 pm

1 stop7h 25m

Washington, D.C. Reagan-National

Sun 11/9

6:00 am-11:30 am

2 stops8h 30m

$282

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 Washington, D.C. from

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

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 Washington, D.C. Reagan-National Airport?

The month of August is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from San Diego, with most prices found around $318. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $324.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from San Diego to Washington, D.C. Reagan-National Airport is on a Thursday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Thursday will often find tickets for as low as $332. Flights from San Diego to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $537. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest San Diego to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the afternoon. Our users have found flights to Washington, D.C. Reagan-National Airport in the afternoon for as low as $189. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the evening when prices are around $387.

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

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

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $360 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from San Diego for as low as $308 on momondo.

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

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

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

As of August 2025, prices for San Diego to Washington, D.C. Reagan-National Airport flights are approximately 16% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$158

Fastest flight time

4h 45m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from San Diego in the past 72 hours is $158. The best round-trip flight deal from San Diego to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $277.
The fastest flight from San Diego to Washington, D.C. Reagan-National Airport takes 4h 45m
Direct flights go from San Diego to Washington, D.C. Reagan-National Airport every day.
Search flight deals

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

    The distance between San Diego and Washington, D.C. Reagan-National is about 2268.2 mi. Flights usually cover this in 5h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from San Diego Airport to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from San Diego to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $148Free CancellationRating
5.8
3,204 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $241Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Hawaiian AirlinesPriceFrom $257Free CancellationRating
7.8
2,690 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
American AirlinesPriceFrom $274Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
7,977 reviews
Search Delta flights

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

    Alaska Airlines flight deals from San Diego to Washington, D.C. Reagan-National Airport start from $241 round-trip. Over the 7 Alaska Airlines flights for this route in a normal week, average airfare is usually $388 round-trip - but some users have found much cheaper deals with momondo.

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

    $256 is the best Southwest flight deal from San Diego to Washington, D.C. Reagan-National Airport found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $487, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,242 user reviews) flies into Washington, D.C. Reagan-National Airport from San Diego 8 times in an average week so prices can vary.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Woodbridge
Waldorf
Tysons
Laurel
Silver Spring
Colonial Beach
Fredericksburg
Towson
Manassas
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie
Springfield
Linthicum Heights

Why use momondo?

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

Finding the right flight to Washington, D.C. from San Diego is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Flights from San Diego to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential San Diego to Washington, D.C. 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 San Diego to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Diego to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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