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.
$55+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — WAS
May 5 — May 121
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 50 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 April 30, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $210 (Cheapflightsfares) |
One-way from | $55 (Cheapflightsfares) |
Popular in | December |
Cheapest in | August |
Average price | $368 |
Good round-trip deal | $281 or less |
Good one-way deal | $159 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 April 30, 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 April 30, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/288:48 pmSAN - BWI
1 stop6h 22mSpirit Airlines
Fri 6/206:15 amBWI - SAN
1 stop15h 11mSpirit Airlines
Deal found 4/29![Spirit Airlines logo]()
$210
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Fri 5/96:25 amSAN - BWI
1 stop7h 57mMultiple Airlines
Thu 5/157:17 amBWI - SAN
1 stop15h 36mMultiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$214
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Sun 5/48:55 pmSAN - BWI
1 stop17h 27mFrontier
Mon 5/126:12 pmBWI - SAN
1 stop21h 11mFrontier
Deal found 4/29![Frontier logo]()
$228
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/241:00 pmSAN - DCA
Nonstop5h 05mHawaiian Airlines
Wed 5/289:59 amDCA - SAN
Nonstop5h 33mHawaiian Airlines
Deal found 4/29![Hawaiian Airlines logo]()
$237
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2710:20 amSAN - IAD
Nonstop5h 05mHawaiian Airlines
Wed 6/45:14 pmIAD - SAN
Nonstop5h 34mHawaiian Airlines
Deal found 4/29![Hawaiian Airlines logo]()
$237
This Frontier deal was found by Cheapflights users on 4/28. 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.
Fri 6/68:37 pmSAN - DCA
1 stop12h 23mFrontier
Sun 6/81:00 pmDCA - SAN
1 stop13h 55mFrontier
Deal found 4/28![Frontier logo]()
$238
This CheapOair deal was found by Cheapflights users on 4/29. 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 5/196:25 amSAN - IAD
1 stop21h 06mFrontier
Sat 5/247:25 amIAD - SAN
1 stop7h 31mFrontier
Deal found 4/29![Frontier logo]()
$238
This Expedia deal was found by Cheapflights users on 4/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:16 pmSAN - IAD
1 stop7h 39mMultiple Airlines
Wed 6/46:30 amIAD - SAN
1 stop11h 00mMultiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$242
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/216:34 pmSAN - IAD
1 stop7h 48mUnited Airlines
Wed 5/2812:45 pmIAD - SAN
Nonstop5h 14mUnited Airlines
Deal found 4/29![United Airlines logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
Sat 5/241:00 pmSAN - DCA
Nonstop5h 05mAlaska Airlines
Wed 5/286:38 pmDCA - SAN
1 stop16h 01mAlaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:15 amSAN - IAD
1 stop9h 44mAlaska Airlines
Sat 5/317:59 pmIAD - SAN
1 stop14h 40mAlaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$249
This Travelocity deal was found by Cheapflights users on 4/29. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/41:00 pmSAN - DCA
Nonstop5h 05mMultiple Airlines
Mon 6/91:00 pmDCA - SAN
1 stop9h 37mMultiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$253
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 April 30, 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 5/26
5:43 pm-6:10 am
1 stop9h 27m
Baltimore/Washington
Thu 5/29
7:17 am-6:03 pm
1 stop13h 46m
$209
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Thu 5/8
10:38 am-5:22 pm
1 stop27h 44m
Baltimore/Washington
Mon 5/12
6:12 pm-12:13 am
1 stop9h 01m
$221
San DiegoBaltimore
SAN - BWI
SANBWI
San Diego
Fri 5/16
5:43 pm-6:10 am
1 stop9h 27m
Baltimore/Washington
Mon 5/19
6:12 pm-12:23 pm
1 stop21h 11m
$227
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 5/24
1:00 pm-9:05 pm
Nonstop5h 05m
Washington, D.C. Reagan-National
Wed 5/28
9:59 am-12:32 pm
Nonstop5h 33m
$237
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Tue 5/27
10:20 am-6:25 pm
Nonstop5h 05m
Washington, D.C. Dulles Intl
Wed 6/4
5:14 pm-7:48 pm
Nonstop5h 34m
$237
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Fri 6/6
8:37 pm-12:00 pm
1 stop12h 23m
Washington, D.C. Reagan-National
Sun 6/8
1:00 pm-11:55 pm
1 stop13h 55m
$238
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Mon 5/19
6:25 am-6:31 am
1 stop21h 06m
Washington, D.C. Dulles Intl
Sat 5/24
7:25 am-11:56 am
1 stop7h 31m
$238
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Fri 5/30
7:16 pm-5:55 am
1 stop7h 39m
Washington, D.C. Dulles Intl
Wed 6/4
6:30 am-2:30 pm
1 stop11h 00m
$242
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 5/21
6:34 pm-5:22 am
1 stop7h 48m
Washington, D.C. Dulles Intl
Wed 5/28
12:45 pm-2:59 pm
Nonstop5h 14m
$243
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 5/24
1:00 pm-9:05 pm
Nonstop5h 05m
Washington, D.C. Reagan-National
Wed 5/28
6:38 pm-7:39 am
1 stop16h 01m
$247
Showing 1-10 of 47 results
Compare providers for flights from San Diego to Washington, D.C.
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 San Diego to Washington, D.C. 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Washington, D.C. flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Diego-Washington, D.C. flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Diego-Washington, D.C. flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Washington, D.C. flights, Cheapflights users trust CheapOair the most. CheapOair 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 San Diego-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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
![United Airlines]()
United Airlines
![Alaska Airlines]()
Alaska Airlines
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.
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 April 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 $309). Flying from San Diego to Washington, D.C. in June is currently the most expensive (average of $373). 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 April 30, 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 49% 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 March 30, 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 April 30, 2025.
The most flights from SAN to WAS are scheduled on a Wednesday (13 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.
Temperature in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Washington, D.C., 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).
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 April 30, 2025.
To help decide which airline to fly from San Diego to Washington, D.C., see what other customers have to say about Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.1
Boarding
8.2
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Entertainment
7.1
Boarding
8.2
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Entertainment
7.1
Boarding
8.2
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Entertainment
7.1
Boarding
8.2
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Entertainment
7.1
Boarding
8.2
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Entertainment
7.1
Boarding
8.2
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.9
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 San Diego?
Book flights to San Diego if you plan to visit one of these locationsAlexandria
Arlington
Woodbridge
Tysons
Fairfax
Springfield
Rockville
Fredericksburg
Silver Spring
Gaithersburg
Linthicum Heights
Falls Church
Laurel
Easton
Towson
Herndon
Bowie
National Harbor
Oxon Hill
Reston
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 9 airlines flying from San Diego to Washington, D.C.
Discover the top 9 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 April 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$64 | Average$230 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$97 | Average$221 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$439 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$353 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$189 | Average$367 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$235 | Average$445 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$399 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$237 | Average$433 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$291 | Average$514 | FlexibilityNo cancel fee | On-time63% |