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

Flying on Hawaiian 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 United Airlines and Alaska Airlines, with the lowest prices starting at $242 and $256, 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 Southwest. According to our data, you can fly for as low as $109. Users have also found prices from $115 and $116 on Hawaiian Airlines and Alaska Airlines, respectively.

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, July is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Dulles Intl Airport (average of $306). 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 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 Wednesday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

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 $138. On average you can expect to pay $1,251. The most popular route, (San Diego - Washington, D.C. Dulles Intl), can usually be booked for $197.

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 46% on the overall cost on flights from San Diego to Washington, D.C. Dulles Intl Airport.

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

Users have found that booking a flight from San Diego to Washington, D.C. Dulles Intl Airport at least 51 days early can save you up to 37% on average compared to booking a flight this week. If booking 51 days before your flight isn’t an option for you, users have found flights from San Diego to Washington, D.C. Dulles Intl Airport for as little as $348 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $483 for flights departing within the next 3 days.

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 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 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 7 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.

$109+ Flights from San Diego to Washington, D.C. Dulles Intl Airport

Round-trip from	$237 (Hawaiian Airlines)
One-way from	$109 (Southwest)
Popular in	November
Cheapest in	August
Average price	$325
Good round-trip deal	$330 or less
Good one-way deal	$208 or less

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.

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%

$109+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.

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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

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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 agosto 1, 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 agosto 1, 2025.

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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.

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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 agosto 1, 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

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?

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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 agosto 1, 2025.