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.
$49+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — WAS
Oct 11 — Oct 181
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 September, booked 56 days in advance, depart on a Friday or Thursday and return on a Wednesday
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 September 11, 2025.
Round-trip from | $148 (Kiwi.com) |
|---|---|
One-way from | $49 (Cheapflightsfares) |
Popular in | July |
Cheapest in | August |
Average price | $317 |
Good round-trip deal | $283 or less |
Good one-way deal | $138 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 September 11, 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 September 11, 2025.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/301:35 pmSAN - BWI
1 stop11h 55mMultiple Airlines
Tue 10/77:50 amBWI - SAN
1 stop16h 30mMultiple Airlines
Deal found 9/9![Multiple Airlines logo]()
$148
This Southwest deal was found by Cheapflights users on 9/9. 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 9/304:30 pmSAN - BWI
1 stop9h 30mSouthwest
Tue 10/78:35 pmBWI - SAN
Nonstop5h 35mSouthwest
Deal found 9/9![Southwest logo]()
$154
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 11/126:50 amSAN - BWI
Nonstop5h 00mSouthwest
Sat 11/151:50 pmBWI - SAN
1 stop7h 05mSouthwest
Deal found 9/10![Southwest logo]()
$155
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 10/2210:20 amSAN - BWI
1 stop6h 50mSouthwest
Wed 10/298:35 pmBWI - SAN
Nonstop5h 35mSouthwest
Deal found 9/10![Southwest logo]()
$159
This Southwest deal was found by Cheapflights users on 9/9. 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.
Sat 10/259:10 pmSAN - BWI
Nonstop5h 05mSouthwest
Sat 11/16:05 pmBWI - SAN
Nonstop5h 30mSouthwest
Deal found 9/9![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 9/8. 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.
Sat 12/67:45 amSAN - BWI
2 stops8h 35mSouthwest
Tue 12/99:45 amBWI - SAN
1 stop7h 00mSouthwest
Deal found 9/8![Southwest logo]()
$169
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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.
Wed 9/241:35 pmSAN - BWI
1 stop11h 55mSpirit Airlines
Tue 9/308:16 amBWI - SAN
1 stop7h 15mSpirit Airlines
Deal found 9/9![Spirit Airlines logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Mon 9/2911:59 amSAN - BWI
1 stop7h 34mSpirit Airlines
Wed 10/17:02 pmBWI - SAN
1 stop7h 32mSpirit Airlines
Deal found 9/10![Spirit Airlines logo]()
$176
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:00 pmSAN - DCA
Nonstop5h 05mHawaiian Airlines
Wed 12/38:59 amDCA - SAN
Nonstop5h 54mHawaiian Airlines
Deal found 9/11![Hawaiian Airlines logo]()
$237
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:33 amSAN - IAD
Nonstop5h 19mHawaiian Airlines
Wed 10/225:42 pmIAD - SAN
Nonstop5h 38mHawaiian Airlines
Deal found 9/11![Hawaiian Airlines logo]()
$237
This Frontier deal was found by Cheapflights users on 9/10. 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.
Thu 10/236:41 amSAN - DCA
1 stop12h 18mFrontier
Thu 10/302:00 pmDCA - SAN
1 stop12h 50mFrontier
Deal found 9/10![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Wed 10/228:00 amSAN - DCA
2 stops10h 59mFrontier
Sat 11/12:00 pmDCA - SAN
1 stop11h 25mFrontier
Deal found 9/10![Frontier logo]()
$239
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 September 11, 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
Sat 12/6
9:45 pm-5:35 am
Nonstop4h 50m
Baltimore/Washington
Tue 12/9
12:35 pm-3:15 pm
Nonstop5h 40m
$156
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Wed 10/22
10:20 am-8:10 pm
1 stop6h 50m
Baltimore/Washington
Wed 10/29
8:35 pm-11:10 pm
Nonstop5h 35m
$159
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Sat 10/25
9:10 pm-5:15 am
Nonstop5h 05m
Baltimore/Washington
Sat 11/1
6:05 pm-8:35 pm
Nonstop5h 30m
$167
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Wed 10/15
1:55 pm-11:45 pm
1 stop6h 50m
Baltimore/Washington
Sat 10/18
7:55 am-10:35 am
Nonstop5h 40m
$181
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 10/1
1:41 pm-9:59 pm
Nonstop5h 18m
Washington, D.C. Reagan-National
Tue 10/7
8:59 am-11:27 am
Nonstop5h 28m
$237
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 12/3
9:25 am-5:30 pm
Nonstop5h 05m
Washington, D.C. Dulles Intl
Mon 12/8
5:37 pm-8:29 pm
Nonstop5h 52m
$237
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sat 10/4
11:15 am-9:07 pm
1 stop6h 52m
Washington, D.C. Dulles Intl
Tue 10/7
5:15 pm-10:14 pm
1 stop7h 59m
$237
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 10/22
12:12 pm-8:29 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Sat 11/1
8:59 am-11:45 am
Nonstop5h 46m
$237
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 10/22
8:30 am-4:42 pm
Nonstop5h 12m
Washington, D.C. Dulles Intl
Thu 10/30
5:40 pm-8:29 pm
Nonstop5h 49m
$237
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 12/3
8:40 am-8:45 pm
2 stops9h 05m
Washington, D.C. Reagan-National
Sun 12/7
6:00 am-11:30 am
2 stops8h 30m
$244
Showing 1-10 of 56 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 August 29, 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 56 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 $292). Flying from San Diego to Washington, D.C. 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 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 September 11, 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 51% 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 September 7, 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 September 11, 2025.
The most flights from SAN to WAS are scheduled on a Wednesday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).
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 71% 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.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $290.
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 Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 24m.
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 Denver (DEN) offer the fastest connection on this route, with an average layover time of 2h 38m.
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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Hawaiian Airlines 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.
Overall
8.0
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Overall
8.0
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.1
Entertainment
7.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
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
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor
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 September 11, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$286 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$158 | Average$349 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$198 | Average$390 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$367 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$237 | Average$433 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$473 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$276 | Average$450 | FlexibilityNo cancel fee | On-time71% |