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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — IAD
Jan 11 — Jan 181
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 February or July, 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
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 December 12, 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 December 12, 2025.
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:11 pmSAN - IAD
1 stop8h 38mUnited Airlines
Sun 1/45:55 pmIAD - SAN
Nonstop5h 57mUnited Airlines
Deal found 12/10![United Airlines logo]()
$352
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:30 pmSAN - IAD
Nonstop4h 49mUnited Airlines
Wed 12/315:55 pmIAD - SAN
Nonstop5h 57mUnited Airlines
Deal found 12/10![United Airlines logo]()
$365
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:30 pmSAN - IAD
Nonstop4h 49mUnited Airlines
Thu 1/19:00 amIAD - SAN
Nonstop5h 45mUnited Airlines
Deal found 12/10![United Airlines logo]()
$367
This American Airlines deal was found by Cheapflights users on 12/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:15 amSAN - IAD
1 stop13h 18mAmerican Airlines
Mon 1/54:29 pmIAD - SAN
1 stop7h 33mAmerican Airlines
Deal found 12/9![American Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:55 pmSAN - IAD
1 stop7h 52mUnited Airlines
Thu 1/19:00 amIAD - SAN
Nonstop5h 45mUnited Airlines
Deal found 12/10![United Airlines logo]()
$392
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:56 pmSAN - IAD
Nonstop4h 56mUnited Airlines
Wed 12/315:55 pmIAD - SAN
Nonstop5h 57mUnited Airlines
Deal found 12/10![United Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:55 pmSAN - IAD
1 stop7h 24mUnited Airlines
Sat 1/36:20 amIAD - SAN
1 stop9h 39mUnited Airlines
Deal found 12/11![United Airlines logo]()
$407
Find 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 December 12, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $254 (Kiwi.com) |
One-way from | $130 (Super.com) |
Popular in | January |
Cheapest in | February |
Average price | $445 |
Good round-trip deal | $363 or less |
Good one-way deal | $211 or less |
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 December 12, 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
Sat 1/17
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Wed 1/21
6:04 pm-5:20 pm
1 stop26h 16m
$262
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sun 1/25
10:00 pm-5:49 am
Nonstop4h 49m
Washington, D.C. Dulles Intl
Sat 1/31
10:02 am-3:04 pm
1 stop8h 02m
$267
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sun 1/25
1:05 pm-10:40 pm
1 stop6h 35m
Washington, D.C. Dulles Intl
Sat 1/31
3:45 pm-8:20 pm
1 stop7h 35m
$277
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 2/5
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Sun 2/8
5:26 pm-8:23 pm
Nonstop5h 57m
$277
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 2/5
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Mon 2/9
5:26 pm-8:23 pm
Nonstop5h 57m
$277
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 1/8
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C. Dulles Intl
Mon 1/12
6:04 pm-7:19 pm
1 stop28h 15m
$282
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Tue 2/24
7:26 pm-5:20 pm
1 stop18h 54m
Washington, D.C. Dulles Intl
Sun 3/1
6:20 pm-9:19 pm
Nonstop5h 59m
$282
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Mon 1/5
7:55 pm-6:47 am
1 stop7h 52m
Washington, D.C. Dulles Intl
Sat 1/10
12:55 pm-3:40 pm
Nonstop5h 45m
$283
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 2/5
11:00 am-11:10 pm
1 stop9h 10m
Washington, D.C. Dulles Intl
Mon 2/9
7:30 am-2:29 pm
1 stop9h 59m
$287
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sat 1/17
7:00 am-11:06 pm
2 stops13h 06m
Washington, D.C. Dulles Intl
Sat 1/24
7:30 am-4:30 pm
1 stop12h 00m
$292
Showing 1-10 of 22 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 December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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
Prices
Airlines
Delays
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 December 5, 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 90 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, June is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Dulles Intl Airport (average of $140). Flying from San Diego to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $261). 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 December 12, 2025.
Unlike at noon, when flights are generally more expensive, you can save up to 67% 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 December 6, 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. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Diego to Washington, D.C. delayed?
About 10% of weekly flights between San Diego and Washington, D.C. have experienced delays in the past year, with the average delay time being 154 minutes.
What is the most punctual flight time for San Diego to Washington, D.C. flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Diego to Washington, D.C. flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.
The best insider tips for San Diego to Washington, D.C. Dulles Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Diego to Washington, D.C. Dulles Intl Airport trip
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 December 12, 2025.
See what other customers who have flown with Alaska Airlines, Hawaiian Airlines, and United Airlines from San Diego to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
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 Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton
Browse thousands of different options on Cheapflights for your next trip
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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 7 airlines flying from San Diego to Dulles Intl
Discover the top 7 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 December 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$133 | Average$231 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$357 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$168 | Average$386 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$353 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$237 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$259 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$296 | Average$567 | FlexibilityNo cancel fee | On-time71% |