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Cheap flights from San Diego to Washington, D.C. from $139

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 2/1. 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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American Airlines Logo
6:46 am - 4:49 pmSAN-IAD
7h 03m1 stop
American Airlines Logo
6:00 am - 12:41 pmIAD-SAN
9h 41m1 stop
$236American Airlines
Find Deal
Tue, Dec 2 - Sat, Dec 13
Alaska Airlines Logo
9:25 am - 5:30 pmSAN-IAD
5h 05mnonstop
Alaska Airlines Logo
5:37 pm - 8:29 pmIAD-SAN
5h 52mnonstop
$237Alaska Airlines
Find Deal
Mon, Dec 8 - Sat, Dec 13
Southwest Logo
10:30 am - 10:00 pmSAN-IAD
8h 30m2 stops
Southwest Logo
5:45 pm - 10:25 pmIAD-SAN
7h 40m1 stop
$242Southwest
Find Deal
Wed, Dec 3 - Tue, Dec 9
United Airlines Logo
12:08 pm - 10:20 pmSAN-IAD
7h 12m1 stop
United Airlines Logo
12:50 pm - 3:28 pmIAD-SAN
5h 38mnonstop
$243United Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
12:50 pm - 8:45 pmSAN-IAD
4h 55mnonstop
United Airlines Logo
2:30 pm - 8:45 pmIAD-SAN
9h 15m1 stop
$247United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
United Airlines Logo
12:08 pm - 10:15 pmSAN-IAD
7h 07m1 stop
United Airlines Logo
3:23 pm - 7:52 pmIAD-SAN
7h 29m1 stop
$252United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
Hawaiian Airlines Logo
2:00 pm - 10:05 pmSAN-IAD
5h 05mnonstop
Hawaiian Airlines Logo
7:34 am - 3:06 pmIAD-SAN
10h 32m1 stop
$266Hawaiian Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Delta Logo
2:19 pm - 12:12 amSAN-IAD
6h 53m1 stop
Delta Logo
6:00 am - 10:26 amIAD-SAN
7h 26m1 stop
$267Delta
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Tue, Dec 9 - Thu, Dec 11
Southwest Logo
10:30 am - 9:45 pmSAN-IAD
8h 15m2 stops
Southwest Logo
4:30 pm - 8:50 pmIAD-SAN
7h 20m1 stop
$282Southwest
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Sat, Feb 14 - Wed, Feb 18
Delta Logo
7:05 pm - 9:11 amSAN-IAD
11h 06m2 stops
Delta Logo
9:00 am - 3:21 pmIAD-SAN
9h 21m1 stop
$307Delta
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Mon, Dec 8 - Sat, Dec 13

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

Our best American Airlines deals on San Diego to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Dec 2
SAN6:46 amSan Diego
7h 03m
1 stop
IAD4:49 pmWashington, D.C. Dulles Intl
Dec 13
IAD6:00 amWashington, D.C. Dulles Intl
9h 41m
1 stop
SAN12:41 pmSan Diego
$236
Find similar
American Airlines
Dec 3
SAN12:43 pmSan Diego
7h 16m
1 stop
IAD10:59 pmWashington, D.C. Dulles Intl
Dec 14
IAD6:25 amWashington, D.C. Dulles Intl
7h 45m
1 stop
SAN11:10 amSan Diego
$256
Find similar
American Airlines
Dec 4
SAN12:43 pmSan Diego
7h 00m
1 stop
IAD10:43 pmWashington, D.C. Dulles Intl
Dec 7
IAD6:00 amWashington, D.C. Dulles Intl
9h 40m
1 stop
SAN12:40 pmSan Diego
$276
Find similar

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

Our best Alaska Airlines deals on San Diego to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Dec 8
SAN9:25 amSan Diego
5h 05m
IAD5:30 pmWashington, D.C. Dulles Intl
Dec 13
IAD5:37 pmWashington, D.C. Dulles Intl
5h 52m
SAN8:29 pmSan Diego
$237
Find similar
Alaska Airlines
Dec 4
SAN9:25 amSan Diego
5h 05m
IAD5:30 pmWashington, D.C. Dulles Intl
Dec 8
IAD5:37 pmWashington, D.C. Dulles Intl
5h 52m
SAN8:29 pmSan Diego
$255
Find similar
Alaska Airlines
Dec 4
SAN9:25 amSan Diego
5h 05m
IAD5:30 pmWashington, D.C. Dulles Intl
Dec 7
IAD5:37 pmWashington, D.C. Dulles Intl
5h 52m
SAN8:29 pmSan Diego
$257
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 November 3, 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

Tue 12/2

6:46 am-4:49 pm

1 stop7h 03m

Washington, D.C. Dulles Intl

Sat 12/13

6:00 am-12:41 pm

1 stop9h 41m

$236

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Mon 12/8

9:25 am-5:30 pm

Nonstop5h 05m

Washington, D.C. Dulles Intl

Sat 12/13

5:37 pm-8:29 pm

Nonstop5h 52m

$237

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 12/3

10:30 am-10:00 pm

2 stops8h 30m

Washington, D.C. Dulles Intl

Tue 12/9

5:45 pm-10:25 pm

1 stop7h 40m

$242

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 12/6

12:08 pm-10:20 pm

1 stop7h 12m

Washington, D.C. Dulles Intl

Mon 12/8

12:50 pm-3:28 pm

Nonstop5h 38m

$243

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Thu 12/4

12:50 pm-8:45 pm

Nonstop4h 55m

Washington, D.C. Dulles Intl

Tue 12/9

2:30 pm-8:45 pm

1 stop9h 15m

$247

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Thu 12/4

12:08 pm-10:15 pm

1 stop7h 07m

Washington, D.C. Dulles Intl

Tue 12/9

3:23 pm-7:52 pm

1 stop7h 29m

$252

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 12/6

2:00 pm-10:05 pm

Nonstop5h 05m

Washington, D.C. Dulles Intl

Sat 12/13

7:34 am-3:06 pm

1 stop10h 32m

$266

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Tue 12/9

2:19 pm-12:12 am

1 stop6h 53m

Washington, D.C. Dulles Intl

Thu 12/11

6:00 am-10:26 am

1 stop7h 26m

$267

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 2/14

10:30 am-9:45 pm

2 stops8h 15m

Washington, D.C. Dulles Intl

Wed 2/18

4:30 pm-8:50 pm

1 stop7h 20m

$282

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Mon 12/8

7:05 pm-9:11 am

2 stops11h 06m

Washington, D.C. Dulles Intl

Sat 12/13

9:00 am-3:21 pm

1 stop9h 21m

$307

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, August 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 $337. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, 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 $422. 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 $605.

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 $602 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 $393 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.

Can stopping save me money on San Diego to Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between San Diego to Washington, D.C. Dulles Intl Airport.

How have San Diego to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of November 2025, prices for San Diego to Washington, D.C. Dulles Intl Airport flights are approximately 27% 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

$179

Fastest flight time

4h 30m

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 $179. 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 $337.
The fastest flight from San Diego to Washington, D.C. Dulles Intl Airport takes 4h 30m
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 50m.

  • 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
3,117 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,799 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $168Free CancellationRating
7.9
8,001 reviews
Search Delta flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
11,235 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $244Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
SouthwestPriceFrom $259Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
American AirlinesPriceFrom $352Free CancellationRating
7.2
11,035 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 $237 round-trip, up to an average price of $349. 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 2,799 reviews) operates around 4 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
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Gaithersburg
Fairfax
Sterling

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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