United's Economy Plus offers extra legroom, enhancing comfort on domestic routes.
United's Polaris Lounges offer exclusive amenities like showers and daybeds for premium passengers.
$139+ Cheap flights from San Francisco (SFO) 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
Apr 1 — Apr 81
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Francisco 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 Francisco to Washington, D.C. Dulles Intl are usually found in September or August, booked 38 days in advance, depart on a Wednesday or Tuesday and return on a Thursday
Cheap flight deals from San Francisco to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 27, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $278 (Frontier) |
One-way from | $139 (Delta) |
Popular in | June |
Cheapest in | September |
Average price | $497 |
Good round-trip deal | $379 or less |
Good one-way deal | $198 or less |
Find flight deals from San Francisco to Dulles Intl
Cheapest flights from San Francisco to Dulles IntlExplore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.
Explore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.
This Frontier deal was found by Cheapflights users on 3/26. 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.
Sat 4/1210:30 pmSFO - IAD
1 stop9h 25mFrontier
Fri 4/183:25 pmIAD - SFO
1 stop10h 24mFrontier
Deal found 3/26![Frontier logo]()
$278
This Hawaiian Airlines deal was found by Cheapflights users on 3/25. 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 5/39:35 pmSFO - IAD
Nonstop5h 05mHawaiian Airlines
Sun 5/47:00 amIAD - SFO
Nonstop6h 08mHawaiian Airlines
Deal found 3/25![Hawaiian Airlines logo]()
$281
This Expedia deal was found by Cheapflights users on 3/26. 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.
Wed 4/3010:33 amSFO - IAD
1 stop10h 25mMultiple Airlines
Thu 5/88:01 amIAD - SFO
1 stop9h 53mMultiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$282
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/249:35 pmSFO - IAD
Nonstop5h 05mAlaska Airlines
Tue 4/297:00 amIAD - SFO
Nonstop6h 08mAlaska Airlines
Deal found 3/27![Alaska Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 3/26. 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.
Wed 4/307:25 amSFO - IAD
2 stops12h 10mSouthwest
Tue 5/66:40 pmIAD - SFO
1 stop7h 40mSouthwest
Deal found 3/26![Southwest logo]()
$292
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/216:30 amSFO - IAD
Nonstop5h 20mUnited Airlines
Wed 5/2110:05 pmIAD - SFO
Nonstop6h 07mUnited Airlines
Deal found 3/25![United Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 3/26. 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.
Fri 4/2512:47 amSFO - IAD
1 stop7h 22mDelta
Fri 5/27:25 amIAD - SFO
1 stop11h 21mDelta
Deal found 3/26![Delta logo]()
$307
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 4/1112:21 amSFO - IAD
1 stop10h 21mAmerican Airlines
Wed 4/166:18 amIAD - SFO
1 stop10h 18mAmerican Airlines
Deal found 3/26![American Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2811:59 pmSFO - IAD
1 stop12h 20mSun Country Air
Mon 6/3012:28 pmIAD - SFO
1 stop13h 25mSun Country Air
Deal found 3/26![Sun Country Air logo]()
$366
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 27, 2025.
Use the filters below to find and compare flights from San Francisco to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
San Francisco
Fly to
Dulles Intl
Route
Depart
Return
Price
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Sat 4/12
10:30 pm-10:55 am
1 stop9h 25m
Washington, D.C. Dulles Intl
Fri 4/18
3:25 pm-10:49 pm
1 stop10h 24m
$278
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Sat 5/3
9:35 pm-5:40 am
Nonstop5h 05m
Washington, D.C. Dulles Intl
Sun 5/4
7:00 am-10:08 am
Nonstop6h 08m
$281
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Wed 4/30
10:33 am-11:58 pm
1 stop10h 25m
Washington, D.C. Dulles Intl
Thu 5/8
8:01 am-2:54 pm
1 stop9h 53m
$282
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Thu 4/24
9:35 pm-5:40 am
Nonstop5h 05m
Washington, D.C. Dulles Intl
Tue 4/29
7:00 am-10:08 am
Nonstop6h 08m
$287
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Wed 4/30
7:25 am-10:35 pm
2 stops12h 10m
Washington, D.C. Dulles Intl
Tue 5/6
6:40 pm-11:20 pm
1 stop7h 40m
$292
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Wed 5/21
6:30 am-2:50 pm
Nonstop5h 20m
Washington, D.C. Dulles Intl
Wed 5/21
10:05 pm-1:12 am
Nonstop6h 07m
$294
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Fri 4/25
12:47 am-11:09 am
1 stop7h 22m
Washington, D.C. Dulles Intl
Thu 5/1
6:00 am-11:07 am
1 stop8h 07m
$307
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Fri 4/11
12:21 am-1:42 pm
1 stop10h 21m
Washington, D.C. Dulles Intl
Wed 4/16
6:18 am-1:36 pm
1 stop10h 18m
$323
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Thu 4/24
6:00 pm-12:23 pm
1 stop15h 23m
Washington, D.C. Dulles Intl
Mon 4/28
11:37 am-5:07 pm
1 stop8h 30m
$389
San FranciscoWashington, D.C.
SFO - IAD
SFOIAD
San Francisco
Wed 5/28
5:50 am-4:44 pm
1 stop7h 54m
$139
Showing 1-10 of 19 results
Compare providers for flights from San Francisco 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 Francisco 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 Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-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 Francisco-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 Francisco-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 Francisco-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 Francisco-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 Francisco 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 Francisco 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 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 Francisco to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Francisco 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 Francisco to Washington, D.C. Dulles Intl Airport
How far ahead should I book a flight from San Francisco to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Dulles Intl. Price data was last updated on March 21, 2025.
Booking 38 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Francisco to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Francisco 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 SFO to IAD?
Find hourly flight availability from San Francisco 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 27, 2025.
When flying from San Francisco to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 16% versus a flight at noon.
What is the cheapest day to fly from San Francisco to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Dulles Intl. Price data was last updated on March 23, 2025.
Travelers seeking maximum savings on their San Francisco to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday 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.
Weekly flight availability from San Francisco to Washington, D.C. Dulles Intl Airport
Explore weekly flight availability from San Francisco 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 27, 2025.
The most flights from SFO to IAD are scheduled on a Wednesday (38 on average). You will have fewer flight options on Sunday, 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 March 27, 2025.
Read through reviews of airlines operating flights from San Francisco to Washington, D.C., such as Southwest, Alaska Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.1
Boarding
8.2
Crew
8.6
Entertainment
7.6
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.1
Boarding
8.2
Crew
8.6
Entertainment
7.6
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.1
Boarding
8.2
Crew
8.6
Entertainment
7.6
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.1
Boarding
8.2
Crew
8.6
Entertainment
7.6
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.1
Boarding
8.2
Crew
8.6
Entertainment
7.6
Comfort
8.1
Food
7.1
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.1
Boarding
8.2
Crew
8.6
Entertainment
7.6
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 Francisco 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 Francisco?
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Alternative routes for San Francisco to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from San Francisco to Dulles Intl
Discover the top 9 airlines that operate flights from San Francisco 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 27, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$48 | Average$326 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$125 | Average$224 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$372 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$205 | Average$396 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$254 | Average$447 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$442 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$277 | Average$372 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$306 | Average$535 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$316 | Average$456 | FlexibilityNo cancel fee | On-time63% |