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.
$130+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — IAD
avr. 2 — avr. 91
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 February, booked 90 days in advance, depart on a Friday or Thursday 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 mars 28, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $252 (United Airlines) |
One-way from | $130 (CheapOair) |
Popular in | November |
Cheapest in | August |
Average price | $447 |
Good round-trip deal | $378 or less |
Good one-way deal | $191 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 mars 28, 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 mars 28, 2025.
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/3010:59 amSAN - IAD
1 stop7h 02mUnited Airlines
sam. 5/31:20 pmIAD - SAN
1 stop8h 31mUnited Airlines
Deal found 3/27![United Airlines logo]()
$252
This American Airlines deal was found by Cheapflights users on 3/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 5/171:48 pmSAN - IAD
1 stop7h 14mAmerican Airlines
sam. 5/315:02 amIAD - SAN
1 stop7h 06mAmerican Airlines
Deal found 3/28![American Airlines logo]()
$255
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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.
sam. 5/246:15 amSAN - IAD
1 stop9h 44mAlaska Airlines
mer. 6/47:59 pmIAD - SAN
1 stop14h 40mAlaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$256
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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.
mer. 4/308:30 amSAN - IAD
Nonstop5h 08mHawaiian Airlines
lun. 5/55:00 pmIAD - SAN
Nonstop5h 43mHawaiian Airlines
Deal found 3/27![Hawaiian Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 3/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/298:45 amSAN - IAD
2 stops10h 50mSouthwest
mar. 5/65:30 pmIAD - SAN
1 stop7h 35mSouthwest
Deal found 3/28![Southwest logo]()
$282
This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/246:10 pmSAN - IAD
1 stop15h 13mSun Country Air
dim. 4/2712:17 pmIAD - SAN
1 stop7h 34mSun Country Air
Deal found 3/28![Sun Country Air logo]()
$289
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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.
jeu. 5/227:16 pmSAN - IAD
1 stop7h 39mFrontier
sam. 5/247:25 amIAD - SAN
1 stop7h 31mFrontier
Deal found 3/27![Frontier logo]()
$294
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/1710:15 pmSAN - IAD
1 stop7h 45mDelta
lun. 6/301:00 pmIAD - SAN
1 stop8h 06mDelta
Deal found 3/27![Delta logo]()
$307
This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/246:10 pmSAN - IAD
1 stop15h 13mMultiple Airlines
mar. 4/295:40 pmIAD - SAN
3 stops29h 14mMultiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$314
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 mars 28, 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
mer. 4/30
10:59 am-9:01 pm
1 stop7h 02m
Washington, D.C. Dulles Intl
sam. 5/3
1:20 pm-6:51 pm
1 stop8h 31m
$252
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
sam. 5/17
1:48 pm-12:02 am
1 stop7h 14m
Washington, D.C. Dulles Intl
sam. 5/31
5:02 am-9:08 am
1 stop7h 06m
$255
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
sam. 5/24
6:15 am-6:59 pm
1 stop9h 44m
Washington, D.C. Dulles Intl
mer. 5/28
7:59 pm-7:39 am
1 stop14h 40m
$256
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
mer. 4/30
8:30 am-4:38 pm
Nonstop5h 08m
Washington, D.C. Dulles Intl
lun. 5/5
5:00 pm-7:43 pm
Nonstop5h 43m
$261
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
mar. 4/29
8:45 am-10:35 pm
2 stops10h 50m
Washington, D.C. Dulles Intl
mar. 5/6
5:30 pm-10:05 pm
1 stop7h 35m
$282
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
mar. 4/22
10:00 pm-8:31 am
1 stop7h 31m
Washington, D.C. Dulles Intl
lun. 4/28
1:44 pm-6:05 pm
1 stop7h 21m
$287
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
jeu. 4/24
6:10 pm-12:23 pm
1 stop15h 13m
Washington, D.C. Dulles Intl
dim. 4/27
12:17 pm-4:51 pm
1 stop7h 34m
$289
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
jeu. 5/22
7:16 pm-5:55 am
1 stop7h 39m
Washington, D.C. Dulles Intl
sam. 5/24
7:25 am-11:56 am
1 stop7h 31m
$294
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
jeu. 4/24
6:10 pm-12:23 pm
1 stop15h 13m
Washington, D.C. Dulles Intl
mar. 4/29
5:40 pm-7:54 pm
3 stops29h 14m
$314
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
jeu. 5/1
6:25 am-6:31 am
1 stop21h 06m
$130
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 21, 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 $385). 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 mars 28, 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 23, 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. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 mars 28, 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.
Boarding
8.2
Food
7.1
Crew
8.6
Entertainment
7.6
Comfort
8.1
Overall
8.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.1
Crew
8.6
Entertainment
7.6
Comfort
8.1
Overall
8.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.1
Crew
8.6
Entertainment
7.6
Comfort
8.1
Overall
8.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.1
Crew
8.6
Entertainment
7.6
Comfort
8.1
Overall
8.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.1
Crew
8.6
Entertainment
7.6
Comfort
8.1
Overall
8.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.1
Crew
8.6
Entertainment
7.6
Comfort
8.1
Overall
8.1
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
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
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Falls Church
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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 mars 28, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$64 | Average$212 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$158 | Average$237 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$179 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$357 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$257 | Average$407 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$308 | Average$501 | FlexibilityNo cancel fee | On-time71% |