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.
$129+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — IAD
Apr 21 — Apr 281
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 April 16, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $237 (Alaska Airlines) |
One-way from | $129 (American Airlines) |
Popular in | November |
Cheapest in | August |
Average price | $387 |
Good round-trip deal | $341 or less |
Good one-way deal | $197 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 April 16, 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 April 16, 2025.
This CheapOair deal was found by Cheapflights users on 4/16. 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.
Sat 5/178:00 amSAN - IAD
1 stop19h 31mFrontier
Tue 5/207:45 amIAD - SAN
1 stop18h 34mFrontier
Deal found 4/16![Frontier logo]()
$188
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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 5/1710:20 amSAN - IAD
Nonstop5h 05mAlaska Airlines
Tue 5/205:14 pmIAD - SAN
Nonstop5h 34mAlaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$237
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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 5/79:00 amSAN - IAD
1 stop11h 58mHawaiian Airlines
Wed 5/145:00 pmIAD - SAN
Nonstop5h 43mHawaiian Airlines
Deal found 4/16![Hawaiian Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 4/15. 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 5/62:10 pmSAN - IAD
1 stop6h 49mUnited Airlines
Wed 5/71:20 pmIAD - SAN
1 stop8h 31mUnited Airlines
Deal found 4/15![United Airlines logo]()
$252
This American Airlines deal was found by Cheapflights users on 4/15. 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 stop9h 36mAmerican Airlines
Deal found 4/15![American Airlines logo]()
$259
This Expedia deal was found by Cheapflights users on 4/15. 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.
Mon 5/267:16 pmSAN - IAD
1 stop7h 39mMultiple Airlines
Mon 6/25:14 pmIAD - SAN
Nonstop5h 34mMultiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 4/16. 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.
Tue 6/1010:15 pmSAN - IAD
1 stop7h 45mDelta
Fri 6/205:29 pmIAD - SAN
1 stop9h 00mDelta
Deal found 4/16![Delta logo]()
$307
This Sun Country Air deal was found by Cheapflights users on 4/16. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:07 pmSAN - IAD
1 stop14h 37mSun Country Air
Fri 11/2812:26 pmIAD - SAN
1 stop7h 41mSun Country Air
Deal found 4/16![Sun Country Air logo]()
$315
This Southwest deal was found by Cheapflights users on 4/15. 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
Tue 5/65:30 pmIAD - SAN
1 stop7h 35mSouthwest
Deal found 4/15![Southwest logo]()
$342
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 April 16, 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 5/17
10:20 am-6:25 pm
Nonstop5h 05m
Washington, D.C. Dulles Intl
Tue 5/20
5:14 pm-7:48 pm
Nonstop5h 34m
$237
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 5/21
8:00 am-5:55 am
1 stop18h 55m
Washington, D.C. Dulles Intl
Sun 5/25
7:25 am-6:26 pm
1 stop14h 01m
$250
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Wed 5/7
6:34 pm-5:22 am
1 stop7h 48m
Washington, D.C. Dulles Intl
Sun 5/11
1:00 pm-3:38 pm
Nonstop5h 38m
$263
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 5/29
6:15 am-6:59 pm
1 stop9h 44m
Washington, D.C. Dulles Intl
Tue 6/3
6:30 am-2:30 pm
1 stop11h 00m
$276
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
Sun 5/18
7:31 am-11:58 pm
1 stop19h 27m
$284
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Fri 5/9
6:15 am-4:44 pm
1 stop7h 29m
Washington, D.C. Dulles Intl
Mon 5/12
6:00 am-10:30 am
1 stop7h 30m
$297
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sat 5/10
8:30 am-4:38 pm
Nonstop5h 08m
Washington, D.C. Dulles Intl
Sat 5/17
5:14 pm-7:48 pm
Nonstop5h 34m
$338
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Tue 5/13
9:30 am-10:35 pm
2 stops10h 05m
Washington, D.C. Dulles Intl
Tue 5/20
6:40 pm-11:00 pm
1 stop7h 20m
$349
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Thu 7/17
4:00 pm-12:29 pm
1 stop17h 29m
Washington, D.C. Dulles Intl
Sun 7/20
6:00 am-4:37 pm
1 stop13h 37m
$455
San DiegoWashington, D.C.
SAN - IAD
SANIAD
San Diego
Sat 5/31
6:15 am-4:17 pm
1 stop7h 02m
$129
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 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 Accuracy1 star | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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 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.
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 April 11, 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, 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 $383). 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 April 16, 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 30, 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 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. 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 April 16, 2025.
The most flights from SAN to IAD are scheduled on a Monday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (8 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 April 16, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest 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.
Comfort
7.9
Crew
8.5
Food
7.1
Entertainment
7.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Crew
8.5
Food
7.1
Entertainment
7.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Crew
8.5
Food
7.1
Entertainment
7.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Crew
8.5
Food
7.1
Entertainment
7.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Crew
8.5
Food
7.1
Entertainment
7.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Crew
8.5
Food
7.1
Entertainment
7.1
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
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
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Springfield
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Rockville
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Linthicum Heights
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 April 16, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$64 | Average$212 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$158 | Average$347 | 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$408 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$304 | Average$501 | FlexibilityNo cancel fee | On-time71% |