Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort on medium-haul flights.
Alaska's Wi-Fi is a flat fee, ideal for business travelers needing connectivity during flights.
$60+ Cheap flights from San Diego (SAN) to Washington, D.C. (WAS)
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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — WAS
Aug 3 — Aug 101
1 adult, Economy
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Find cheap flights from San Diego to Washington, D.C. 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. are usually found in August or May, booked 50 days in advance, depart on a Friday or Thursday and return on a Tuesday
Cheap flight deals from San Diego to Washington, D.C.
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Washington, D.C. (WAS). 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 July 29, 2025.
Round-trip from | $219 (CheapOair) |
|---|---|
One-way from | $60 (CheapOair) |
Popular in | November |
Cheapest in | August |
Average price | $377 |
Good round-trip deal | $277 or less |
Good one-way deal | $178 or less |
Find flight deals from San Diego to Washington, D.C.
Cheapest flights from San Diego to Washington, D.C.Explore the most affordable flight options available from San Diego to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
Explore the most affordable flight options available from San Diego to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
This CheapOair deal was found by Cheapflights users on 7/29. 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.
Mon 8/117:00 pmSAN - BWI
1 stop8h 05mSpirit Airlines
Fri 8/156:30 amBWI - SAN
1 stop14h 26mSpirit Airlines
Deal found 7/29![Spirit Airlines logo]()
$219
This CheapOair deal was found by Cheapflights users on 7/28. 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.
Sun 8/174:44 pmSAN - BWI
1 stop15h 07mMultiple Airlines
Mon 10/68:15 amBWI - SAN
1 stop13h 27mMultiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$220
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 9/241:41 pmSAN - DCA
Nonstop5h 18mAlaska Airlines
Tue 9/309:59 amDCA - SAN
Nonstop5h 21mAlaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/248:33 amSAN - IAD
Nonstop5h 19mAlaska Airlines
Tue 9/305:52 pmIAD - SAN
Nonstop5h 27mAlaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$237
This flugladen.de deal was found by Cheapflights users on 7/27. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:33 amSAN - IAD
Nonstop5h 14mHawaiian Airlines
Sat 9/65:52 pmIAD - SAN
Nonstop5h 27mHawaiian Airlines
Deal found 7/27![Hawaiian Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 9/2712:00 pmSAN - IAD
1 stop7h 06mUnited Airlines
Tue 9/309:00 amIAD - SAN
Nonstop5h 24mUnited Airlines
Deal found 7/28![United Airlines logo]()
$243
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/196:25 amSAN - DCA
1 stop7h 34mFrontier
Sat 8/236:00 pmDCA - SAN
1 stop7h 08mFrontier
Deal found 7/27![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Tue 9/91:41 pmSAN - DCA
Nonstop5h 18mHawaiian Airlines
Tue 9/168:00 amDCA - SAN
1 stop11h 34mHawaiian Airlines
Deal found 7/27![Hawaiian Airlines logo]()
$246
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:30 pmSAN - DCA
1 stop13h 20mSouthwest
Sat 9/276:55 amDCA - SAN
2 stops12h 20mSouthwest
Deal found 7/29![Southwest logo]()
$248
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:25 amSAN - BWI
Nonstop5h 05mSouthwest
Wed 9/2410:30 amBWI - SAN
1 stop6h 30mSouthwest
Deal found 7/29![Southwest logo]()
$251
This Trip.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/211:17 pmSAN - IAD
1 stop14h 13mMultiple Airlines
Sat 8/238:00 amIAD - SAN
1 stop15h 04mMultiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$254
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:04 pmSAN - IAD
1 stop8h 30mFrontier
Sat 8/1612:27 pmIAD - SAN
1 stop13h 27mFrontier
Deal found 7/28![Frontier logo]()
$258
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Washington, D.C. 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 July 29, 2025.
Use the filters below to find and compare flights from San Diego to Washington, D.C. that are best for you.
Fly from
San Diego
Fly to
Washington, D.C.
Route
Depart
Return
Price
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Mon 8/11
7:00 pm-6:05 am
1 stop8h 05m
Baltimore/Washington
Fri 8/15
6:30 am-5:56 pm
1 stop14h 26m
$219
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Sun 8/17
4:44 pm-10:51 am
1 stop15h 07m
Baltimore/Washington
Mon 10/6
8:15 am-6:42 pm
1 stop13h 27m
$220
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 9/24
1:41 pm-9:59 pm
Nonstop5h 18m
Washington, D.C. Reagan-National
Tue 9/30
9:59 am-12:20 pm
Nonstop5h 21m
$237
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
Sat 8/30
8:33 am-4:47 pm
Nonstop5h 14m
Washington, D.C. Dulles Intl
Sat 9/6
5:52 pm-8:19 pm
Nonstop5h 27m
$239
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Fri 9/26
12:00 pm-10:06 pm
1 stop7h 06m
Washington, D.C. Dulles Intl
Sun 9/28
9:00 am-11:24 am
Nonstop5h 24m
$243
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Tue 8/19
6:25 am-4:59 pm
1 stop7h 34m
Washington, D.C. Reagan-National
Sat 8/23
6:00 pm-10:08 pm
1 stop7h 08m
$245
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Tue 9/9
1:41 pm-9:59 pm
Nonstop5h 18m
Washington, D.C. Reagan-National
Tue 9/16
8:00 am-4:34 pm
1 stop11h 34m
$246
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Fri 9/19
6:30 pm-10:50 am
1 stop13h 20m
Washington, D.C. Reagan-National
Sat 9/27
6:55 am-4:15 pm
2 stops12h 20m
$248
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Tue 9/2
6:25 am-2:30 pm
Nonstop5h 05m
Baltimore/Washington
Wed 9/24
10:30 am-2:00 pm
1 stop6h 30m
$251
Showing 1-10 of 32 results
The best insider tips for San Diego to Washington, D.C. 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 San Diego to Washington, D.C. trip
Airlines
![Alaska Airlines]()
Alaska Airlines
![United Airlines]()
United Airlines
United's Economy Plus offers extra legroom, ideal for added comfort on medium-haul flights.
United's Polaris Lounges offer showers and dining, enhancing the premium travel experience.
Airports
Our travel experts
Best time to book a flight from San Diego to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.
How far ahead should I book a flight from San Diego to Washington, D.C.?
Use this chart to determine the optimal time to book a round-trip flight from San Diego to Washington, D.C.. Price data was last updated on July 25, 2025.
To ensure you get the cheapest price possible for a flight from San Diego to Washington, D.C., you should look to book at least 50 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.?
Currently, August is the cheapest month in which you can book a flight from San Diego to Washington, D.C. (average of $241). Flying from San Diego to Washington, D.C. in March is currently the most expensive (average of $290). 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 WAS?
Find hourly flight availability from San Diego to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.
A simple way to save on the total cost of your ticket is to fly from San Diego to Washington, D.C. in the afternoon. If you’re flexible enough to do this you can expect to save up to 52% on your trip compared to booking a flight in the evening.
What is the cheapest day to fly from San Diego to Washington, D.C.?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Washington, D.C.. Price data was last updated on July 27, 2025.
Travelers seeking maximum savings on their San Diego to Washington, D.C. flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings 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.
Explore weekly flight availability from San Diego to Washington, D.C.. 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 29, 2025.
The most flights from SAN to WAS are scheduled on a Tuesday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from San Diego to Washington, D.C.?
What’s the top layover airport for flights from San Diego to Washington, D.C.?
Share of 1-stop round-trip flights from San Diego to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from San Diego to Washington, D.C. on Cheapflights.
What’s the cheapest layover airport for flights from San Diego to Washington, D.C.?
Average round-trip fare for 1-stop flights from San Diego to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.
Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $318.
What’s the fastest layover option from San Diego to Washington, D.C.?
Shortest average travel time for 1-stop one-way flights from San Diego to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 7h 00m.
Which airport typically offers the quickest layover for flights from San Diego to Washington, D.C.?
Average layover duration for 1-stop one-way flights from San Diego to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 4h 57m.
Reviews of airlines servicing Washington, D.C.
Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from San Diego to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Entertainment
7.1
Overall
8.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Boarding
8.1
Crew
8.5
Entertainment
7.1
Overall
8.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Boarding
8.1
Crew
8.5
Entertainment
7.1
Overall
8.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Boarding
8.1
Crew
8.5
Entertainment
7.1
Overall
8.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Boarding
8.1
Crew
8.5
Entertainment
7.1
Overall
8.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Boarding
8.1
Crew
8.5
Entertainment
7.1
Overall
8.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Related info for your journey
Find useful and relevant information for your journey from San Diego to Washington, D.C.. 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 locationsWoodbridge
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
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Alternative routes for San Diego to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from San Diego to Washington, D.C.
Discover the top 8 airlines that operate flights from San Diego to Washington, D.C.. 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 July 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$251 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$287 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$157 | Average$429 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$356 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$198 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$367 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$237 | Average$431 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$259 | Average$488 | FlexibilityNo cancel fee | On-time63% |