Cheap flights from Washington, D.C. to San Diego from $73
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to San Diego departing on 8/12. 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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Southwest flights from Washington, D.C. to San Diego
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Spirit Airlines flights from Washington, D.C. to San Diego
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How to get the cheapest flight ticket from Washington, D.C. to San Diego
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 typical price of a round-trip flight between Washington, D.C. and San Diego?
What is the cheapest month to fly to San Diego?
If you are unable to visit San Diego during the month of August, then departing from Washington, D.C. during the month January is also very affordable. Most momondo users find prices during this month for around $357.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from Washington, D.C. to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $387. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $475. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.
What is the cheapest time of day to depart on your flight to San Diego?
The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $339. Flights at noon are often more expensive with an average ticket price of $474.
What is the cheapest Washington, D.C. to San Diego flight route?
Fly from Washington, D.C. Dulles Intl to San Diego for the best Washington, D.C. - San Diego flight prices
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from Washington, D.C. when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $411 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Washington, D.C. for as low as $322 on momondo.
What cabin class options are available on Washington, D.C. to San Diego flights?
There are 4 cabin classes available to choose from on Washington, D.C. to San Diego 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 Washington, D.C. to San Diego flights?
You could potentially save up to 18% on your flight if you consider stops on a Washington, D.C. to San Diego flight.
How have Washington, D.C. to San Diego flight prices changed over time?
As of June 2025, prices for Washington, D.C. to San Diego flights are approximately 35% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to San Diego?
Southwest, Spirit Airlines, and Frontier are the most popular carriers operating from Washington, D.C. to San Diego
What airlines fly to San Diego?
United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to San Diego from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. to San Diego on average per day?
As of June 2025, 14 flights take off from Washington, D.C. and land in San Diego each day. The most common flight departure time for this route is 5:00PM, with 44% of daily flights taking off in the afternoon.
How many flights depart from Washington, D.C. to San Diego on average per week?
As of June 2025, there are 102 flights per week flying from Washington, D.C. to San Diego. The most common day of the week flights depart is Thu, with 18% of flights taking off on this day.
When to book flights from Washington, D.C. to San Diego
Cheap Washington, D.C. to San Diego (WAS to SAN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Diego
How far is Washington, D.C. to San Diego by plane?
Washington, D.C. and San Diego are 2268.2 mi apart from one another. By plane, this route typically takes 5h 14m.
When did momondo last update prices for flights from Washington, D.C. to San Diego Airport?
Prices for flights from Washington, D.C. to San Diego Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to San Diego Airport?
The number of operators available for flights from Washington, D.C. to San Diego Airport is 8 as of June 2025.
How old do you have to be to fly from Washington, D.C. to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to San Diego?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. to San Diego is Boeing 737-800 Passenger/BBJ2 (winglets) (22.22% of total bookings). The next most popular plane models are Boeing 737 MAX 9 (21.99%), Boeing 737 (13.46%), and Boeing 737-900 (13.09%).
What is the most popular airline from Washington, D.C. to San Diego?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to San Diego is United Airlines, representing 48% of all bookings. The subsequent popular airlines are Alaska Airlines at 23%, Frontier at 7%, and Spirit Airlines at 7%.
Best airlines flying from Washington, D.C. to San Diego
Compare and see reviews for airlines that fly from Washington, D.C. to San Diego with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $89 | Free Cancellation | Rating 5.9 3,290 reviews | |||
| PriceFrom $110 | Free Cancellation | Rating 6.3 8,039 reviews | |||
| PriceFrom $183 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $188 | Free Cancellation | Rating 7.9 2,488 reviews | |||
| PriceFrom $198 | Free Cancellation | Rating 8.0 7,956 reviews | |||
| PriceFrom $211 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $257 | Free Cancellation | Rating 7.4 8,778 reviews | |||
| PriceFrom $310 | Free Cancellation | Rating 8.0 4,287 reviews |
Alaska Airlines Flights From Washington, D.C. to San Diego
Alaska Airlines operates around 11 flights from Washington, D.C. to San Diego every week. The average price of these flights found in the last 72 hours has been $357, but momondo users have found Alaska Airlines deals from Washington, D.C. to San Diego from as low as $211 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.
Southwest Flights From Washington, D.C. to San Diego
$310 is the best Southwest flight deal from Washington, D.C. to San Diego found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $496, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,288 user reviews) flies into San Diego from Washington, D.C. 3 times in an average week so prices can vary.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to San Diego?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from Washington, D.C..
Can I find flights from Washington, D.C. to San Diego with flexible booking policies on momondo?
Flights from Washington, D.C. to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Washington, D.C. to San Diego?
momondo provides multiple filters to help you find the best flight to San Diego from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Washington, D.C. to San Diego right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Washington, D.C. and alert you when they change.