Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Diego to Washington, D.C. from $100

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 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Diego to Washington, D.C. (SAN-IAD)

Cheap round-trip flights

Frontier Logo
7:15 am - 9:17 amSAN-IAD
23h 02m2 stops
Frontier Logo
10:17 am - 6:16 pmIAD-SAN
10h 59m1 stop
$235Frontier
Find Deal
Wed, Sep 17 - Fri, Sep 19
Hawaiian Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
Hawaiian Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
$236Hawaiian Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
Alaska Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
Alaska Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
$237Alaska Airlines
Find Deal
Wed, Sep 24 - Tue, Sep 30
Logo
7:11 pm - 12:02 pmSAN-IAD
13h 51m1 stop
Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
$239
Find Deal
Fri, Sep 19 - Tue, Sep 23
Logo
9:30 am - 12:23 amSAN-IAD
11h 53m1 stop
Logo
10:17 am - 5:42 pmIAD-SAN
10h 25m1 stop
$242
Find Deal
Tue, Sep 23 - Thu, Oct 2
United Airlines Logo
12:00 pm - 10:06 pmSAN-IAD
7h 06m1 stop
United Airlines Logo
5:55 pm - 8:19 pmIAD-SAN
5h 24mnonstop
$243United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
7:00 am - 4:43 pmSAN-IAD
6h 43m1 stop
United Airlines Logo
5:55 pm - 8:19 pmIAD-SAN
5h 24mnonstop
$247United Airlines
Find Deal
Wed, Sep 24 - Tue, Sep 30
Alaska Airlines Logo
5:30 pm - 7:33 amSAN-IAD
11h 03m1 stop
Alaska Airlines Logo
7:00 am - 2:48 pmIAD-SAN
10h 48m1 stop
$256Alaska Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
American Airlines Logo
9:19 pm - 10:07 amSAN-IAD
9h 48m1 stop
American Airlines Logo
11:47 am - 6:03 pmIAD-SAN
9h 16m1 stop
$271American Airlines
Find Deal
Fri, Oct 3 - Sat, Oct 4
American Airlines Logo
9:19 pm - 8:46 amSAN-IAD
8h 27m1 stop
American Airlines Logo
5:40 pm - 10:36 pmIAD-SAN
7h 56m1 stop
$278American Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27

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
Sep 17
SAN7:15 amSan Diego
23h 02m
2 stops
IAD9:17 amWashington, D.C. Dulles Intl
Sep 19
IAD10:17 amWashington, D.C. Dulles Intl
10h 59m
1 stop
SAN6:16 pmSan Diego
$235
Find similar
Frontier
Sep 25
SAN6:27 pmSan Diego
11h 50m
1 stop
IAD9:17 amWashington, D.C. Dulles Intl
Sep 28
IAD10:17 amWashington, D.C. Dulles Intl
9h 25m
1 stop
SAN4:42 pmSan Diego
$240
Find similar
Frontier
Sep 11
SAN6:27 pmSan Diego
11h 50m
1 stop
IAD9:17 amWashington, D.C. Dulles Intl
Sep 14
IAD10:17 amWashington, D.C. Dulles Intl
9h 25m
1 stop
SAN4:42 pmSan Diego
$243
Find similar

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

Our best Hawaiian Airlines deals on San Diego to Washington, D.C. Dulles Intl Airport flight tickets
Hawaiian Airlines
Sep 20
SAN8:33 amSan Diego
5h 19m
IAD4:52 pmWashington, D.C. Dulles Intl
Sep 27
IAD5:52 pmWashington, D.C. Dulles Intl
5h 27m
SAN8:19 pmSan Diego
$236
Find similar
Hawaiian Airlines
Sep 20
SAN8:33 amSan Diego
5h 19m
IAD4:52 pmWashington, D.C. Dulles Intl
Sep 27
IAD5:52 pmWashington, D.C. Dulles Intl
5h 27m
SAN8:19 pmSan Diego
$241
Find similar
Hawaiian Airlines
Sep 24
SAN8:33 amSan Diego
5h 19m
IAD4:52 pmWashington, D.C. Dulles Intl
Sep 29
IAD5:52 pmWashington, D.C. Dulles Intl
5h 27m
SAN8:19 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 August 31, 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 9/17

7:15 am-9:17 am

2 stops23h 02m

Washington, D.C. Dulles Intl

Fri 9/19

10:17 am-6:16 pm

1 stop10h 59m

$235

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 9/20

8:33 am-4:52 pm

Nonstop5h 19m

Washington, D.C. Dulles Intl

Sat 9/27

5:52 pm-8:19 pm

Nonstop5h 27m

$236

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 9/24

8:33 am-4:52 pm

Nonstop5h 19m

Washington, D.C. Dulles Intl

Tue 9/30

5:52 pm-8:19 pm

Nonstop5h 27m

$237

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Fri 9/19

7:11 pm-12:02 pm

1 stop13h 51m

Washington, D.C. Dulles Intl

Tue 9/23

5:52 pm-8:19 pm

Nonstop5h 27m

$239

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Tue 9/23

9:30 am-12:23 am

1 stop11h 53m

Washington, D.C. Dulles Intl

Thu 10/2

10:17 am-5:42 pm

1 stop10h 25m

$242

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 10/4

12:00 pm-10:06 pm

1 stop7h 06m

Washington, D.C. Dulles Intl

Tue 10/7

5:55 pm-8:19 pm

Nonstop5h 24m

$243

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 9/24

7:00 am-4:43 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

Tue 9/30

5:55 pm-8:19 pm

Nonstop5h 24m

$247

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Tue 9/23

5:30 pm-7:33 am

1 stop11h 03m

Washington, D.C. Dulles Intl

Tue 9/30

7:00 am-2:48 pm

1 stop10h 48m

$256

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Fri 10/3

9:19 pm-10:07 am

1 stop9h 48m

Washington, D.C. Dulles Intl

Sat 10/4

11:47 am-6:03 pm

1 stop9h 16m

$271

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 9/20

9:19 pm-8:46 am

1 stop8h 27m

Washington, D.C. Dulles Intl

Sat 9/27

5:40 pm-10:36 pm

1 stop7h 56m

$278

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, July 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 July, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $357.

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 $420. 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 $618 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 $331 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 August 2025, prices for San Diego to Washington, D.C. Dulles Intl Airport flights are approximately 8% 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

$209

Fastest flight time

4h 41m

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 $209. 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 $277.
The fastest flight from San Diego to Washington, D.C. Dulles Intl Airport takes 4h 41m
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 55m.

  • 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
3,202 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,696 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $198Free CancellationRating
7.9
7,978 reviews
Search Delta flights
Alaska AirlinesPriceFrom $236Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $254Free CancellationRating
7.4
8,941 reviews
Search United Airlines flights
SouthwestPriceFrom $259Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $352Free CancellationRating
7.2
10,000 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 2 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 $352. 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 2,696 reviews) operates around 2 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 $360, 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
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Silver Spring
Colonial Beach
Fredericksburg
Harpers Ferry
Towson
Manassas
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie

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.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 9/5
Fri 9/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.