For a smooth departure from IAD, use the Aerotrain to quickly reach distant gates, but allow extra time for long walks.
$52+ Cheap flights from Washington, D.C. (WAS) to San Diego (SAN)
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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAN
Apr 29 — May 61
1 adult, Economy
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Find cheap flights from Washington, D.C. to San Diego 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 Washington, D.C. to San Diego are usually found in May or August, booked 61 days in advance, depart on a Wednesday or Tuesday and return on a Friday
Cheap flight deals from Washington, D.C. to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 24, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $240 (CheapOair) |
One-way from | $52 (FlightHub) |
Popular in | December |
Cheapest in | May |
Average price | $467 |
Good round-trip deal | $306 or less |
Good one-way deal | $159 or less |
Find flight deals from Washington, D.C. to San Diego
Cheapest flights from Washington, D.C. to San DiegoExplore the most affordable flight options available from Washington, D.C. to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.
Explore the most affordable flight options available from Washington, D.C. to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.
This CheapOair deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/157:31 amIAD - SAN
1 stop19h 27mFrontier
Sun 5/186:25 amSAN - IAD
1 stop21h 06mFrontier
Deal found 4/23![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:14 pmIAD - SAN
Nonstop5h 34mHawaiian Airlines
Sat 5/2410:20 amSAN - IAD
Nonstop5h 05mHawaiian Airlines
Deal found 4/23![Hawaiian Airlines logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/39:00 amIAD - SAN
1 stop10h 42mAlaska Airlines
Tue 6/36:53 pmSAN - IAD
1 stop9h 43mAlaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$251
This Orbitz deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:25 amIAD - SAN
1 stop7h 31mMultiple Airlines
Mon 6/24:59 pmSAN - IAD
1 stop11h 37mMultiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$252
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/177:00 amDCA - SAN
1 stop8h 28mUnited Airlines
Tue 6/1710:30 pmSAN - DCA
1 stop9h 26mUnited Airlines
Deal found 4/23![United Airlines logo]()
$252
This Expedia deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:00 amDCA - SAN
1 stop8h 10mMultiple Airlines
Wed 5/141:57 pmSAN - DCA
Nonstop5h 02mMultiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$253
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/73:25 pmDCA - SAN
1 stop7h 50mAmerican Airlines
Sat 6/1410:45 pmSAN - DCA
1 stop7h 21mAmerican Airlines
Deal found 4/23![American Airlines logo]()
$256
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3012:45 pmIAD - SAN
Nonstop5h 14mUnited Airlines
Sat 5/319:45 pmSAN - IAD
Nonstop4h 59mUnited Airlines
Deal found 4/23![United Airlines logo]()
$257
This Mytrip deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:00 pmBWI - SAN
2 stops16h 13mSpirit Airlines
Fri 5/98:48 pmSAN - BWI
1 stop6h 22mSpirit Airlines
Deal found 4/23![Spirit Airlines logo]()
$260
This Justfly.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/812:51 pmBWI - SAN
2 stops21h 22mMultiple Airlines
Sun 5/118:54 pmSAN - BWI
1 stop17h 28mMultiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$266
This Trip.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:12 pmBWI - SAN
1 stop9h 01mFrontier
Wed 5/148:00 amSAN - BWI
2 stops22h 58mFrontier
Deal found 4/23![Frontier logo]()
$267
This JetBlue deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1111:45 amDCA - SAN
1 stop10h 21mJetBlue
Mon 6/169:35 pmSAN - DCA
1 stop10h 08mJetBlue
Deal found 4/23![JetBlue logo]()
$267
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. to San Diego 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, Cheapflights users made 2,558,603 searches. Data last updated April 24, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Diego that are best for you.
Fly from
Washington, D.C.
Fly to
San Diego
Route
Depart
Return
Price
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
Thu 5/15
7:31 am-11:58 pm
1 stop19h 27m
San Diego
Sun 5/18
6:25 am-6:31 am
1 stop21h 06m
$241
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
Sat 5/17
5:14 pm-7:48 pm
Nonstop5h 34m
San Diego
Sat 5/24
10:20 am-6:25 pm
Nonstop5h 05m
$243
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
Tue 6/3
9:00 am-4:42 pm
1 stop10h 42m
San Diego
Tue 6/3
6:53 pm-7:36 am
1 stop9h 43m
$251
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
Fri 5/30
7:25 am-11:56 am
1 stop7h 31m
San Diego
Mon 6/2
4:59 pm-7:36 am
1 stop11h 37m
$252
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Tue 6/17
7:00 am-12:28 pm
1 stop8h 28m
San Diego
Tue 6/17
10:30 pm-10:56 am
1 stop9h 26m
$252
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Sat 5/24
6:00 pm-11:59 pm
1 stop8h 59m
San Diego
Tue 5/27
1:00 pm-9:05 pm
Nonstop5h 05m
$253
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Sat 6/7
3:25 pm-8:15 pm
1 stop7h 50m
San Diego
Sat 6/14
10:45 pm-9:06 am
1 stop7h 21m
$256
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
Fri 5/30
12:45 pm-2:59 pm
Nonstop5h 14m
San Diego
Sat 5/31
9:45 pm-5:44 am
Nonstop4h 59m
$257
BaltimoreSan Diego
BWI - SAN
BWISAN
Baltimore/Washington
Tue 5/6
6:00 pm-7:13 am
2 stops16h 13m
San Diego
Fri 5/9
8:48 pm-6:10 am
1 stop6h 22m
$260
BaltimoreSan Diego
BWI - SAN
BWISAN
Baltimore/Washington
Thu 5/8
12:51 pm-7:13 am
2 stops21h 22m
San Diego
Sun 5/11
8:54 pm-5:22 pm
1 stop17h 28m
$266
Showing 1-10 of 51 results
Compare providers for flights from Washington, D.C. to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to San Diego in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C.-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C.-San Diego flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
The best insider tips for Washington, D.C. to San Diego flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Diego trip
Best time to book a flight from Washington, D.C. to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Washington, D.C. 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 Washington, D.C. to San Diego
How far ahead should I book a flight from Washington, D.C. to San Diego?
Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to San Diego. Price data was last updated on April 18, 2025.
The price you pay for your flight from Washington, D.C. to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Washington, D.C. to San Diego?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to San Diego (average of $286). Flying from Washington, D.C. to San Diego in March is currently the most expensive (average of $366). 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 WAS to SAN?
Find hourly flight availability from Washington, D.C. to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.
One of the essential ways to save on airfare from Washington, D.C. to San Diego is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.
What is the cheapest day to fly from Washington, D.C. to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to San Diego. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their Washington, D.C. to San Diego flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Washington, D.C. to San Diego
Explore weekly flight availability from Washington, D.C. to San Diego. 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 April 24, 2025.
The most flights from WAS to SAN are scheduled on a Wednesday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).
Rainfall in San Diego by month
Plan your trip to San Diego by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.
Temperature in San Diego by month
Plan your trip to San Diego by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated April 24, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to San Diego, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.1
Food
7.1
Reviews
1 / 20
4.0
OkayAnonymous,Apr 2025
LAS - STS
Overall
8.0
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.1
Food
7.1
Reviews
1 / 20
4.0
OkayAnonymous,Apr 2025
LAS - STS
Overall
8.0
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.1
Food
7.1
Reviews
1 / 20
4.0
OkayAnonymous,Apr 2025
LAS - STS
Overall
8.0
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.1
Food
7.1
Reviews
1 / 20
4.0
OkayAnonymous,Apr 2025
LAS - STS
Overall
8.0
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.1
Food
7.1
Reviews
1 / 20
4.0
OkayAnonymous,Apr 2025
LAS - STS
Overall
8.0
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.1
Food
7.1
Reviews
1 / 20
4.0
OkayAnonymous,Apr 2025
LAS - STS
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsEl Cajon
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Alternative routes for Washington, D.C. to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Washington, D.C. to San Diego
Discover the top 8 airlines that operate flights from Washington, D.C. to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 24, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$254 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$110 | Average$245 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$179 | Average$371 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$188 | Average$382 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$211 | Average$354 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$440 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$257 | Average$445 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$328 | Average$518 | FlexibilityNo cancel fee | On-time63% |