What are the cheapest airlines flying from San Diego to Washington, D.C. Dulles Intl Airport round-trip?

Flying on Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by Hawaiian Airlines and United Airlines, with the lowest prices starting at $239 and $252, respectively. These flights start at 38% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from San Diego to Washington, D.C. Dulles Intl Airport one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $105. Users have also found prices from $122 and $129 on Hawaiian Airlines and Southwest, respectively.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the cheapest flights from San Diego to Washington, D.C. Dulles Intl Airport?

The cheapest flight price from San Diego to Washington, D.C. Dulles Intl Airport is $158. On average you can expect to pay $2,079. The most popular route, (San Diego - Washington, D.C. Dulles Intl), can usually be booked for $222.

What are the most reliable airlines from San Diego to Washington, D.C. Dulles Intl Airport?

The top 3 most reliable airlines when flying from San Diego to Washington, D.C. Dulles Intl Airport are Ethiopian Air (88%), United Airlines (85%) and Austrian Airlines (84%).

What are the most popular airlines that fly from San Diego to Washington, D.C. Dulles Intl Airport?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from San Diego to Washington, D.C. Dulles Intl Airport.

What is the cheapest day to fly round-trip from San Diego to Washington, D.C. Dulles Intl Airport?

Leaving on a Thursday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 47% on the overall cost on flights from San Diego to Washington, D.C. Dulles Intl Airport.

What is the cheapest month to fly from San Diego to Washington, D.C. Dulles Intl Airport?

August can be a great time to fly to Washington, D.C. Dulles Intl Airport from San Diego with a flight ticket averaging about $363. Cheapflights users have found deals in the month of August for as cheap as $82. The most expensive prices can be found in the month of November.

What airport do you fly from for flights from San Diego to Washington, D.C. Dulles Intl?

Located just 2.6 mi from the city center, San Diego is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from San Diego. Booking flights from San Diego (SAN) to Washington, D.C. Dulles Intl should be relatively easy as there are 11 daily outbound flights to Washington, D.C. Dulles Intl from 7 different airlines.

Can I find deals for flights from San Diego to Dulles Intl that include hotel bookings?

Yes. In addition to deals on San Diego to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Diego to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Dulles Intl.

Can I find deals for business class flights from San Diego to Dulles Intl?

Yes. Cheapflights offers flight deals from San Diego to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$98+ Flights from San Diego to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from San Diego to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Diego to Washington, D.C. Dulles Intl are usually found in August or July, booked 90 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from San Diego to Dulles Intl

Round-trip from	$237 (Alaska Airlines)
One-way from	$98 (Trip.com)
Popular in	November
Cheapest in	August
Average price	$351
Good round-trip deal	$330 or less
Good one-way deal	$208 or less

From San Diego to Washington, D.C. Dulles Intl

Search Deals

One-way flight from San Diego to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Price to beat on a round-trip flight from San Diego to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from San Diego to Washington, D.C. Dulles Intl.

Search Deals

Find flight deals from San Diego to Dulles Intl

Cheapest flights from San Diego to Dulles Intl
Explore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Wed 9/248:33 amSAN - IAD

Nonstop5h 19mHawaiian Airlines

Sat 9/275:52 pmIAD - SAN

Nonstop5h 27mHawaiian Airlines

Deal found 7/28

$237

Tue 9/95:30 pmSAN - IAD

1 stop11h 03mMultiple Airlines

Tue 9/167:00 amIAD - SAN

1 stop10h 48mMultiple Airlines

Deal found 7/26

$243

Sat 9/2712:00 pmSAN - IAD

1 stop7h 06mUnited Airlines

Tue 9/3012:35 pmIAD - SAN

1 stop7h 42mUnited Airlines

Deal found 7/26

$252

Wed 9/249:30 amSAN - IAD

1 stop11h 53mAlaska Airlines

Sat 9/277:00 amIAD - SAN

1 stop10h 16mAlaska Airlines

Deal found 7/28

$256

Wed 8/67:04 pmSAN - IAD

1 stop8h 30mFrontier

Tue 8/127:30 amIAD - SAN

1 stop13h 49mFrontier

Deal found 7/25

$258

Sat 8/3011:55 amSAN - IAD

1 stop7h 55mSouthwest

Sat 9/67:00 amIAD - SAN

2 stops13h 25mSouthwest

Deal found 7/28

$282

Sat 11/810:09 amSAN - IAD

2 stops10h 50mAmerican Airlines

Sun 11/165:03 pmIAD - SAN

1 stop9h 53mAmerican Airlines

Deal found 7/27

$302

Sat 11/2210:10 pmSAN - IAD

1 stop10h 40mDelta

Thu 11/279:00 amIAD - SAN

1 stop9h 38mDelta

Deal found 7/27

$317

Best flights from San Diego to Dulles Intl
Discover carefully curated flight deals from San Diego to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2025.

Wed 9/248:33 amSAN - IAD

Nonstop5h 19mAlaska Airlines

Tue 9/305:52 pmIAD - SAN

Nonstop5h 27mAlaska Airlines

Deal found 7/27

$237

Sat 8/308:33 amSAN - IAD

Nonstop5h 14mHawaiian Airlines

Sat 9/65:52 pmIAD - SAN

Nonstop5h 27mHawaiian Airlines

Deal found 7/27

$239

Sat 9/2712:00 pmSAN - IAD

1 stop7h 06mUnited Airlines

Tue 9/3012:35 pmIAD - SAN

1 stop7h 42mUnited Airlines

Deal found 7/26

$252

Wed 8/67:04 pmSAN - IAD

1 stop8h 30mFrontier

Tue 8/127:30 amIAD - SAN

1 stop13h 49mFrontier

Deal found 7/25

$258

Sat 8/3011:55 amSAN - IAD

1 stop7h 55mSouthwest

Sat 9/67:00 amIAD - SAN

2 stops13h 25mSouthwest

Deal found 7/28

$282

Tue 8/127:04 pmSAN - IAD

1 stop8h 30mMultiple Airlines

Tue 8/195:25 pmIAD - SAN

Nonstop5h 27mMultiple Airlines

Deal found 7/26

$323

Last-minute flights from San Diego to Dulles Intl
Discover last-minute flight deals from San Diego to Dulles Intl. Data last updated July 28, 2025 and is based on user searches.

Sun 8/36:15 amSAN - IAD

1 stop8h 23mAmerican Airlines

Sun 8/36:44 pmIAD - SAN

1 stop8h 25mAmerican Airlines

Deal found 7/28

$801

Mon 8/410:00 pmSAN - IAD

Nonstop4h 59mUnited Airlines

Tue 8/58:35 amIAD - SAN

Nonstop5h 20mUnited Airlines

Deal found 7/28

$632

Wed 8/67:04 pmSAN - IAD

1 stop8h 30mFrontier

Tue 8/127:30 amIAD - SAN

1 stop13h 49mFrontier

Deal found 7/25

$258

Wed 8/67:39 amSAN - IAD

1 stop8h 40mHawaiian Airlines

Wed 8/135:25 pmIAD - SAN

Nonstop5h 27mHawaiian Airlines

Deal found 7/27

$536

Wed 8/61:30 pmSAN - IAD

1 stop7h 12mDelta

Wed 8/133:26 pmIAD - SAN

1 stop7h 00mDelta

Deal found 7/26

$537

Thu 8/77:04 pmSAN - IAD

1 stop8h 30mMultiple Airlines

Mon 8/115:25 pmIAD - SAN

Nonstop5h 27mMultiple Airlines

Deal found 7/27

$433

Thu 8/710:48 amSAN - IAD

Nonstop5h 11mAlaska Airlines

Mon 8/115:25 pmIAD - SAN

Nonstop5h 27mAlaska Airlines

Deal found 7/27

$557

Thu 8/78:25 amSAN - IAD

2 stops11h 25mSouthwest

Mon 8/116:50 pmIAD - SAN

1 stop7h 25mSouthwest

Deal found 7/27

$572

Tue 8/127:04 pmSAN - IAD

1 stop8h 30mMultiple Airlines

Tue 8/195:25 pmIAD - SAN

Nonstop5h 27mMultiple Airlines

Deal found 7/26

$323

Sat 8/236:15 amSAN - IAD

1 stop14h 06mDelta

Wed 8/276:15 amIAD - SAN

1 stop7h 44mDelta

Deal found 7/26

$340

Tue 8/268:33 amSAN - IAD

Nonstop5h 14mHawaiian Airlines

Tue 9/25:52 pmIAD - SAN

Nonstop5h 27mHawaiian Airlines

Deal found 7/28

$237

Wed 8/276:32 pmSAN - IAD

1 stop7h 50mUnited Airlines

Sat 9/65:50 pmIAD - SAN

Nonstop5h 29mUnited Airlines

Deal found 7/26

$247

One-way flights from San Diego to Dulles Intl
Search for one-way flight options from San Diego to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 28, 2025.

Wed 8/271:17 pmSAN - IAD

1 stop14h 13mMultiple Airlines

Deal found 7/28

$98

Sat 8/167:06 pmSAN - IAD

1 stop8h 28mFrontier

Deal found 7/26

$105

Wed 9/311:46 amSAN - IAD

1 stop9h 37mHawaiian Airlines

Deal found 7/25

$122

Tue 9/26:35 amSAN - IAD

1 stop7h 40mSouthwest

Deal found 7/28

$129

Tue 8/268:33 amSAN - IAD

Nonstop5h 14mAlaska Airlines

Deal found 7/28

$139

Sat 10/1112:00 pmSAN - IAD

1 stop7h 06mUnited Airlines

Deal found 7/26

$144

Mon 9/110:40 pmSAN - IAD

1 stop9h 52mDelta

Deal found 7/28

$149

Cheapflights Fare Finder

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 9/24

8:33 am-4:52 pm

Nonstop5h 19m

Washington, D.C. Dulles Intl

Sat 9/27

5:52 pm-8:19 pm

Nonstop5h 27m

$237

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Tue 9/9

5:30 pm-7:33 am

1 stop11h 03m

Washington, D.C. Dulles Intl

Tue 9/16

7:00 am-2:48 pm

1 stop10h 48m

$243

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 9/27

12:00 pm-10:06 pm

1 stop7h 06m

Washington, D.C. Dulles Intl

Tue 9/30

12:35 pm-5:17 pm

1 stop7h 42m

$252

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 9/24

9:30 am-12:23 am

1 stop11h 53m

Washington, D.C. Dulles Intl

Sat 9/27

7:00 am-2:16 pm

1 stop10h 16m

$256

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 8/6

7:04 pm-6:34 am

1 stop8h 30m

Washington, D.C. Dulles Intl

Tue 8/12

7:30 am-6:19 pm

1 stop13h 49m

$258

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 8/30

11:55 am-10:50 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

Sat 9/6

7:00 am-5:25 pm

2 stops13h 25m

$282

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 8/27

1:17 pm-6:30 am

1 stop14h 13m

$98

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Sat 8/16

7:06 pm-6:34 am

1 stop8h 28m

$105

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Wed 9/3

11:46 am-12:23 am

1 stop9h 37m

$122

San DiegoWashington, D.C.

SAN - IAD

SANIAD

San Diego

Tue 9/2

6:35 am-5:15 pm

1 stop7h 40m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 13 results

The best insider tips for San Diego to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your San Diego to Washington, D.C. Dulles Intl Airport trip

Airlines

United Airlines

United's Polaris Lounges offer showers, napping areas, and dining for premium passengers.

United's Economy Plus offers extra legroom and priority boarding for MileagePlus Premier members.

Read more about United Airlinesby Harriet Baskas

Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort.

Alaska Airlines' Wi-Fi is available for a flat fee, ideal for business travelers.

Read more about Alaska Airlinesby Robert Schrader

Airports

SAN

Plan to arrive at SAN at least two hours before your flight to avoid stress from potential traffic congestion.

IAD

Use the Washington Metro Silver line to reach IAD in under 40 minutes, a cost-effective option for airport transfers.

Our travel experts

Harriet Baskas

Expert on United Airlines

Robert Schrader

Expert on Alaska Airlines

Blane Bachelor

Expert on SAN

Ramsey Qubein

Expert on IAD

Best time to book a flight from San Diego to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Diego with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from San Diego to Washington, D.C. Dulles Intl Airport?

To ensure you get the cheapest price possible for a flight from San Diego to Washington, D.C. Dulles Intl Airport, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Diego to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Diego to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAN to IAD?

Unlike at noon, when flights are generally more expensive, you can save up to 70% on flights from San Diego to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

What is the cheapest day to fly from San Diego to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their San Diego to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Diego to Washington, D.C. Dulles Intl Airport

The most flights from SAN to IAD are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Alaska Airlines, Southwest, and Delta from San Diego to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,237 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,971 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,604 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,893 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What airport do you fly from for flights from San Diego to Washington, D.C. Dulles Intl?
Located just 2.6 mi from the city center, San Diego is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from San Diego. Booking flights from San Diego (SAN) to Washington, D.C. Dulles Intl should be relatively easy as there are 11 daily outbound flights to Washington, D.C. Dulles Intl from 7 different airlines.
What are the cheapest airlines flying from San Diego to Washington, D.C. Dulles Intl Airport round-trip?
Flying on Alaska Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by Hawaiian Airlines and United Airlines, with the lowest prices starting at $239 and $252, respectively. These flights start at 38% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from San Diego to Washington, D.C. Dulles Intl Airport one-way?
For one-way options, check prices for Frontier. According to our data, you can fly for as low as $105. Users have also found prices from $122 and $129 on Hawaiian Airlines and Southwest, respectively.
What are the most reliable airlines from San Diego to Washington, D.C. Dulles Intl Airport?
The top 3 most reliable airlines when flying from San Diego to Washington, D.C. Dulles Intl Airport are Ethiopian Air (88%), United Airlines (85%) and Austrian Airlines (84%).
What are the cheapest flights from San Diego to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from San Diego to Washington, D.C. Dulles Intl Airport is $158. On average you can expect to pay $2,079. The most popular route, (San Diego - Washington, D.C. Dulles Intl), can usually be booked for $222.
Can I find deals for flights from San Diego to Dulles Intl that include hotel bookings?
Yes. In addition to deals on San Diego to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Diego to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Dulles Intl.
Can I find deals for business class flights from San Diego to Dulles Intl?
Yes. Cheapflights offers flight deals from San Diego to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Diego to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Diego to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Fredericksburg

Gaithersburg

Easton

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Waldorf

Laurel

Rockville

Oxon Hill

Springfield

National Harbor

Dundalk

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from San Diego to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$133	Average$227	FlexibilityNo cancel fee	On-time62%
Hawaiian Airlines	Cheapest$158	Average$354	FlexibilityNo cancel fee	On-time85%
Delta	Cheapest$198	Average$376	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$236	Average$345	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$256	Average$435	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$259	Average$476	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$352	Average$461	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$98+ Cheap flights from San Diego (SAN) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Diego to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Diego to Washington, D.C. Dulles Intl are usually found in August or July, booked 90 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from San Diego to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Diego to Dulles Intl

Cheapest flights from San Diego to Dulles IntlExplore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Explore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Diego to Washington, D.C. Dulles Intl Airport that are best for you.

The best insider tips for San Diego to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your San Diego to Washington, D.C. Dulles Intl Airport trip

Airlines

United Airlines

Alaska Airlines

Airports

SAN

IAD

Our travel experts

Best time to book a flight from San Diego to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Diego with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from San Diego to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Dulles Intl. Price data was last updated on July 25, 2025.

What is the cheapest month to book a flight from San Diego to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from SAN to IAD?

Find hourly flight availability from San Diego to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.

What is the cheapest day to fly from San Diego to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Dulles Intl. Price data was last updated on July 27, 2025.

Weekly flight availability from San Diego to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from San Diego to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2025.

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Alaska Airlines, Southwest, and Delta from San Diego to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from San Diego to Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from San Diego to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from San Diego to Washington, D.C. Dulles Intl Airport one-way?

What are the most reliable airlines from San Diego to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from San Diego to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from San Diego to Dulles Intl that include hotel bookings?

How can I find direct flights from San Diego to Dulles Intl?

Can I find deals for business class flights from San Diego to Dulles Intl?

What is the cheapest month to book a flight from San Diego to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from San Diego to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from San Diego to Dulles Intl
Explore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.