United's Polaris Lounges offer showers, napping areas, and dining for premium passengers.
United's Economy Plus offers extra legroom and priority boarding for MileagePlus Premier members.
$128+ Cheap flights from San Diego (SAN) to Dulles Intl (IAD)
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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — IAD
Mar 26 — Apr 21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Diego to Dulles Intl 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. Dulles Intl are usually found in August or May, booked 90 days in advance, depart on a Thursday or Friday and return on a Wednesday
Cheap flight deals from San Diego to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Dulles Intl (IAD). 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 March 21, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $247 (Alaska Airlines) |
One-way from | $128 (Alaska Airlines) |
Popular in | November |
Cheapest in | August |
Average price | $447 |
Good round-trip deal | $372 or less |
Good one-way deal | $185 or less |
Find flight deals from San Diego to Dulles Intl
Cheapest flights from San Diego to Dulles IntlExplore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.
Explore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 5/76:15 amSAN - IAD
1 stop8h 07mAlaska Airlines
Tue 5/135:00 pmIAD - SAN
Nonstop5h 43mAlaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/20. 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 4/292:17 pmSAN - IAD
1 stop6h 42mUnited Airlines
Wed 4/306:30 amIAD - SAN
1 stop9h 11mUnited Airlines
Deal found 3/20![United Airlines logo]()
$252
This American Airlines deal was found by Cheapflights users on 3/21. 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 5/171:48 pmSAN - IAD
1 stop7h 14mAmerican Airlines
Tue 5/205:07 pmIAD - SAN
1 stop7h 46mAmerican Airlines
Deal found 3/21![American Airlines logo]()
$257
This Hawaiian Airlines deal was found by Cheapflights users on 3/21. 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 4/168:50 amSAN - IAD
Nonstop5h 08mHawaiian Airlines
Mon 4/215:30 pmIAD - SAN
Nonstop5h 49mHawaiian Airlines
Deal found 3/21![Hawaiian Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/267:10 amSAN - IAD
1 stop7h 12mDelta
Mon 4/2812:29 pmIAD - SAN
1 stop9h 04mDelta
Deal found 3/21![Delta logo]()
$287
This Cheapflightsfares deal was found by Cheapflights users on 3/21. 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.
Thu 4/246:10 pmSAN - IAD
1 stop15h 13mSun Country Air
Sun 4/2712:17 pmIAD - SAN
1 stop7h 34mSun Country Air
Deal found 3/21![Sun Country Air logo]()
$289
This Frontier deal was found by Cheapflights users on 3/21. 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 5/227:16 pmSAN - IAD
1 stop7h 39mFrontier
Tue 5/277:25 amIAD - SAN
1 stop7h 26mFrontier
Deal found 3/21![Frontier logo]()
$298
This Southwest deal was found by Cheapflights users on 3/20. 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 4/2910:10 amSAN - IAD
2 stops9h 25mSouthwest
Wed 4/305:30 pmIAD - SAN
1 stop7h 35mSouthwest
Deal found 3/20![Southwest logo]()
$302
This Gotogate deal was found by Cheapflights users on 3/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:05 pmSAN - IAD
1 stop15h 33mMultiple Airlines
Sat 5/178:01 amIAD - SAN
1 stop18h 57mMultiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$333
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Dulles Intl 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 March 21, 2025.
Use the filters below to find and compare flights from San Diego to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
San Diego
Fly to
Dulles Intl
Route
Depart
Return
Price
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 5/7
6:15 am-5:22 pm
1 stop8h 07m
Washington, D.C. Dulles Intl
Tue 5/13
5:00 pm-7:43 pm
Nonstop5h 43m
$247
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Tue 4/29
2:17 pm-11:59 pm
1 stop6h 42m
Washington, D.C. Dulles Intl
Wed 4/30
6:30 am-12:41 pm
1 stop9h 11m
$252
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sat 5/17
1:48 pm-12:02 am
1 stop7h 14m
Washington, D.C. Dulles Intl
Tue 5/20
5:07 pm-9:53 pm
1 stop7h 46m
$257
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 4/16
8:50 am-4:58 pm
Nonstop5h 08m
Washington, D.C. Dulles Intl
Mon 4/21
5:30 pm-8:19 pm
Nonstop5h 49m
$277
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sat 4/26
7:10 am-5:22 pm
1 stop7h 12m
Washington, D.C. Dulles Intl
Mon 4/28
12:29 pm-6:33 pm
1 stop9h 04m
$287
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 4/24
6:10 pm-12:23 pm
1 stop15h 13m
Washington, D.C. Dulles Intl
Sun 4/27
12:17 pm-4:51 pm
1 stop7h 34m
$289
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 5/22
7:16 pm-5:55 am
1 stop7h 39m
Washington, D.C. Dulles Intl
Tue 5/27
7:25 am-11:51 am
1 stop7h 26m
$298
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Tue 4/29
10:10 am-10:35 pm
2 stops9h 25m
Washington, D.C. Dulles Intl
Wed 4/30
5:30 pm-10:05 pm
1 stop7h 35m
$302
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 5/15
6:05 pm-12:38 pm
1 stop15h 33m
Washington, D.C. Dulles Intl
Sat 5/17
8:01 am-11:58 pm
1 stop18h 57m
$333
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 4/30
6:15 am-5:22 pm
1 stop8h 07m
$128
Showing 1-10 of 19 results
Compare providers for flights from San Diego to Dulles Intl
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 Dulles Intl in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport trip
Airlines
![United Airlines]()
United Airlines
![Alaska Airlines]()
Alaska Airlines
Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort.
Alaska Airlines' Wi-Fi is available for a flat fee, ideal for business travelers.
Airports
Our travel experts
Best time to book a flight from San Diego to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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. Dulles Intl Airport
How far ahead should I book a flight from San Diego to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from San Diego to Dulles Intl. Price data was last updated on March 14, 2025.
To ensure you get the cheapest price possible for a flight from San Diego to Washington, D.C. Dulles Intl Airport, you should look to book at least 43 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. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Diego to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $387). 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 IAD?
Find hourly flight availability from San Diego to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.
Unlike at noon, when flights are generally more expensive, you can save up to 69% on flights from San Diego to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.
What is the cheapest day to fly from San Diego to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Dulles Intl. Price data was last updated on March 16, 2025.
Travelers seeking maximum savings on their San Diego to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday at noon 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. Dulles Intl Airport
Explore weekly flight availability from San Diego to Dulles Intl. 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 March 21, 2025.
The most flights from SAN to IAD are scheduled on a Thursday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).
Rainfall in Dulles Intl by month
Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 2.6 in.
Temperature in Dulles Intl by month
Plan your trip to Dulles Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated March 21, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from San Diego to Washington, D.C. by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.6
Crew
8.7
Overall
8.1
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Entertainment
7.6
Crew
8.7
Overall
8.1
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Entertainment
7.6
Crew
8.7
Overall
8.1
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Entertainment
7.6
Crew
8.7
Overall
8.1
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Entertainment
7.6
Crew
8.7
Overall
8.1
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Entertainment
7.6
Crew
8.7
Overall
8.1
Boarding
8.2
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Related info for your journey
Find useful and relevant information for your journey from San Diego to Dulles Intl. 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 locationsArlington
Alexandria
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Alternative routes for San Diego to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from San Diego to Dulles Intl
Discover the top 6 airlines that operate flights from San Diego to Dulles Intl. 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 March 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$64 | Average$212 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$158 | Average$298 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$179 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$356 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$257 | Average$403 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$308 | Average$495 | FlexibilityNo cancel fee | On-time71% |