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Cheap flights from San Diego to Washington, D.C. 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 San Diego to Washington, D.C. departing on 1/14. 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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Cheap round-trip flights

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Alaska Airlines Logo
9:10 am - 5:04 pm
SAN
-
IAD
4h 54mnonstop
Alaska Airlines Logo
5:26 pm - 8:23 pm
IAD
-
SAN
5h 57mnonstop
$253Alaska Airlines
Wed, Jan 14 - Sun, Jan 18
Alaska Airlines Logo
9:10 am - 5:04 pm
SAN
-
IAD
4h 54mnonstop
Alaska Airlines Logo
5:26 pm - 8:23 pm
IAD
-
SAN
5h 57mnonstop
$255Alaska Airlines
Tue, Jan 13 - Mon, Jan 19
American Airlines Logo
6:20 am - 4:31 pm
SAN
-
IAD
7h 11m1 stop
American Airlines Logo
5:32 pm - 10:26 pm
IAD
-
SAN
7h 54m1 stop
$256American Airlines
Sat, Feb 14 - Tue, Feb 17
Alaska Airlines Logo
9:10 am - 5:04 pm
SAN
-
IAD
4h 54mnonstop
Alaska Airlines Logo
5:26 pm - 8:23 pm
IAD
-
SAN
5h 57mnonstop
$257Alaska Airlines
Fri, Jan 16 - Wed, Jan 21
Delta Logo
7:00 am - 11:06 pm
SAN
-
IAD
13h 06m2 stops
Delta Logo
12:38 pm - 10:20 pm
IAD
-
SAN
12h 42m2 stops
$258Delta
Wed, Feb 11 - Wed, Feb 18
Alaska Airlines Logo
9:10 am - 5:04 pm
SAN
-
IAD
4h 54mnonstop
Alaska Airlines Logo
6:04 pm - 5:20 pm
IAD
-
SAN
26h 16m1 stop
$262Alaska Airlines
Fri, Jan 16 - Wed, Jan 21
United Airlines Logo
10:52 am - 9:17 pm
SAN
-
IAD
7h 25m1 stop
United Airlines Logo
12:55 pm - 3:40 pm
IAD
-
SAN
5h 45mnonstop
$267United Airlines
Wed, Jan 14 - Sun, Jan 18
Multiple Airlines Logo
6:25 am - 8:56 pm
SAN
-
IAD
11h 31m1 stop
Multiple Airlines Logo
5:26 pm - 8:23 pm
IAD
-
SAN
5h 57mnonstop
$270Multiple Airlines
Sun, Jan 11 - Sat, Jan 17
Alaska Airlines Logo
8:26 pm - 5:20 pm
SAN
-
IAD
17h 54m1 stop
Alaska Airlines Logo
6:27 pm - 10:04 am
IAD
-
SAN
18h 37m1 stop
$271Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Delta Logo
11:00 am - 11:10 pm
SAN
-
IAD
9h 10m1 stop
Delta Logo
6:00 am - 10:33 am
IAD
-
SAN
7h 33m1 stop
$272Delta
Fri, Feb 6 - Wed, Feb 11

Delta flights from San Diego to Washington, D.C. Dulles Intl Airport

Our best Delta deals on San Diego to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Feb 11
SAN7:00 amSan Diego
13h 06m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
Feb 18
IAD12:38 pmWashington, D.C. Dulles Intl
12h 42m
2 stops
SAN10:20 pmSan Diego
$258
Find similar
Delta
Feb 6
SAN11:00 amSan Diego
9h 10m
1 stop
IAD11:10 pmWashington, D.C. Dulles Intl
Feb 11
IAD6:00 amWashington, D.C. Dulles Intl
7h 33m
1 stop
SAN10:33 amSan Diego
$272
Find similar
Delta
Jan 12
SAN10:15 pmSan Diego
10h 28m
1 stop
IAD11:43 amWashington, D.C. Dulles Intl
Jan 14
IAD12:29 pmWashington, D.C. Dulles Intl
9h 29m
1 stop
SAN6:58 pmSan Diego
$277
Find similar

Frontier flights from San Diego to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on San Diego to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Jan 11
SAN6:25 amSan Diego
11h 31m
1 stop
IAD8:56 pmWashington, D.C. Dulles Intl
Jan 17
IAD5:30 amWashington, D.C. Dulles Intl
15h 43m
2 stops
SAN6:13 pmSan Diego
$282
Find similar
Frontier
Jan 11
SAN6:25 amSan Diego
11h 31m
1 stop
IAD8:56 pmWashington, D.C. Dulles Intl
Jan 16
IAD6:00 amWashington, D.C. Dulles Intl
21h 15m
2 stops
SAN12:15 amSan Diego
$333
Find similar
Frontier
Jan 5
SAN8:10 pmSan Diego
12h 18m
2 stops
IAD11:28 amWashington, D.C. Dulles Intl
Jan 8
IAD9:59 pmWashington, D.C. Dulles Intl
28h 37m
1 stop
SAN11:36 pmSan Diego
$381
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Washington, D.C. Dulles Intl 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 December 23, 2025.
Use the filters below to find and compare flights from San Diego to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 1/14

9:10 am-5:04 pm

Nonstop4h 54m

Washington, D.C. Dulles Intl

Sun 1/18

5:26 pm-8:23 pm

Nonstop5h 57m

$253

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Tue 1/13

9:10 am-5:04 pm

Nonstop4h 54m

Washington, D.C. Dulles Intl

Mon 1/19

5:26 pm-8:23 pm

Nonstop5h 57m

$255

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 2/14

6:20 am-4:31 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Tue 2/17

5:32 pm-10:26 pm

1 stop7h 54m

$256

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Fri 1/16

9:10 am-5:04 pm

Nonstop4h 54m

Washington, D.C. Dulles Intl

Wed 1/21

5:26 pm-8:23 pm

Nonstop5h 57m

$257

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 2/11

7:00 am-11:06 pm

2 stops13h 06m

Washington, D.C. Dulles Intl

Wed 2/18

12:38 pm-10:20 pm

2 stops12h 42m

$258

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Fri 1/16

9:10 am-5:04 pm

Nonstop4h 54m

Washington, D.C. Dulles Intl

Wed 1/21

6:04 pm-5:20 pm

1 stop26h 16m

$262

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 1/14

10:52 am-9:17 pm

1 stop7h 25m

Washington, D.C. Dulles Intl

Sun 1/18

12:55 pm-3:40 pm

Nonstop5h 45m

$267

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sun 1/11

6:25 am-8:56 pm

1 stop11h 31m

Washington, D.C. Dulles Intl

Sat 1/17

5:26 pm-8:23 pm

Nonstop5h 57m

$270

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Thu 2/26

8:26 pm-5:20 pm

1 stop17h 54m

Washington, D.C. Dulles Intl

Mon 3/2

6:27 pm-10:04 am

1 stop18h 37m

$271

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Fri 2/6

11:00 am-11:10 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

Wed 2/11

6:00 am-10:33 am

1 stop7h 33m

$272

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. Dulles Intl 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. Dulles Intl Airport?

In general, February is the cheapest month to fly from San Diego to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $347. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $347.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $416. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Diego to Washington, D.C. Dulles Intl Airport for around $609.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from San Diego in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $194 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $562 on average. Flights to Washington, D.C. Dulles Intl Airport from San Diego at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest San Diego to Washington, D.C. Dulles Intl flight route?

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $388 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from San Diego for as low as $291 on momondo.

What cabin class options are available on San Diego to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on San Diego to Washington, D.C. Dulles Intl 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. Dulles Intl Airport flight prices changed over time?

As of December 2025, prices for San Diego to Washington, D.C. Dulles Intl Airport flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from San Diego to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Washington, D.C. Dulles Intl 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. Dulles Intl Airport (SAN to IAD) flight deals and tips

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

Best Price Found

$217

Fastest flight time

4h 37m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from San Diego in the past 72 hours is $217. The best round-trip flight deal from San Diego to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $403.
The fastest flight from San Diego to Washington, D.C. Dulles Intl Airport takes 4h 37m
Direct flights go from San Diego to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • How far is San Diego to Washington, D.C. Dulles Intl by plane?

    There are 2245.8 mi between San Diego and Washington, D.C. Dulles Intl. By plane, this route typically takes 4h 37m.

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

    Prices for flights from San Diego Airport to Washington, D.C. Dulles Intl Airport were last updated today.

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

  • How old do you have to be to fly from San Diego Airport to Washington, D.C. Dulles Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Diego to Washington, D.C. Dulles Intl Airport?

  • What is the most popular airline from San Diego to Washington, D.C. Dulles Intl Airport?

Best airlines flying from San Diego to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from San Diego to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $133Free CancellationRating
5.8
3,074 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $168Free CancellationRating
7.9
8,013 reviews
Search Delta flights
Alaska AirlinesPriceFrom $236Free CancellationRating
8.0
11,513 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $237Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights
SouthwestPriceFrom $259Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
American AirlinesPriceFrom $296Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights

  • Alaska Airlines Flights From San Diego to Washington, D.C. Dulles Intl Airport

    Alaska Airlines is one of the most popular airlines flying from San Diego to Washington, D.C. Dulles Intl Airport, operating 4 flights/week on average for this route. A good Alaska Airlines flight deal for San Diego to Washington, D.C. Dulles Intl Airport starts from $236 round-trip, up to an average price of $351. Our users have rated Alaska Airlines at 8.0/10.

  • Hawaiian Airlines Flights From San Diego to Washington, D.C. Dulles Intl Airport

    Hawaiian Airlines (7.8/10 from 2,820 reviews) operates around 5 flights from San Diego to Washington, D.C. Dulles Intl Airport in any given week. The average Hawaiian Airlines airfare for this route is around $357, with deals from around $158 rare but found on momondo. Referenced prices are for round-trip San Diego to Washington, D.C. Dulles Intl Airport flight searches in the last 72 hours.

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

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Diego to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

All flight searches from San Diego to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between San Diego and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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