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Dulles Intl

$159+ Cheap flights from San Luis Obispo (SBP) 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SBP — IAD
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap flight deals from San Luis Obispo to Dulles Intl

Cheapest flights from San Luis Obispo to Dulles Intl
Explore the most affordable flight options available from San Luis Obispo to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:34 pm
SBP
-
IAD
1 stop25h 35m
Alaska Airlines
Wed 4/297:10 am
IAD
-
SBP
1 stop18h 08m
Alaska Airlines
Deal found 3/9$285
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:34 pm
SBP
-
IAD
1 stop31h 06m
Alaska Airlines
Tue 4/217:00 am
IAD
-
SBP
1 stop14h 42m
Alaska Airlines
Deal found 3/9$295
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:34 pm
SBP
-
IAD
1 stop31h 16m
Alaska Airlines
Sat 5/27:10 am
IAD
-
SBP
1 stop18h 08m
Alaska Airlines
Deal found 3/9$310
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:00 am
SBP
-
IAD
1 stop8h 41m
Alaska Airlines
Sun 4/266:47 pm
IAD
-
SBP
1 stop7h 28m
Alaska Airlines
Deal found 3/9$333

Find flight deals from San Luis Obispo to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Luis Obispo (SBP) 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 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$285
(Alaska Airlines)

One-way from

$159
(Alaska Airlines)

Popular in

August

Cheapest in

November

Average price

$533
Provider with most accurate pricing for San Luis Obispo County-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for San Luis Obispo County-Washington, D.C. Dulles Intl flights.
Search Deals
From San Luis Obispo County to Washington, D.C. Dulles Intl
Search Deals
One-way flight from San Luis Obispo County to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($91 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Luis Obispo 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 12, 2026.
Use the filters below to find and compare flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 4/21

7:34 pm-12:09 am

1 stop25h 35m

Washington, D.C. Dulles Intl

Wed 4/29

9:00 am-11:15 pm

2 stops17h 15m

$324

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 4/21

7:34 pm-12:09 am

1 stop25h 35m

Washington, D.C. Dulles Intl

Sat 5/2

7:10 am-6:14 pm

2 stops14h 04m

$324

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Wed 4/29

2:27 pm-5:50 am

1 stop12h 23m

Washington, D.C. Dulles Intl

Sat 5/2

9:00 am-10:18 pm

1 stop16h 18m

$325

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Wed 7/29

6:05 pm-6:42 am

1 stop9h 37m

Washington, D.C. Dulles Intl

Wed 8/12

6:30 am-11:41 am

1 stop8h 11m

$349

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Thu 5/7

5:52 pm-6:12 am

1 stop9h 20m

Washington, D.C. Dulles Intl

Mon 5/11

6:43 pm-11:44 pm

1 stop8h 01m

$349
Quickest round-trip

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Thu 4/23

6:00 am-5:41 pm

1 stop8h 41m

Washington, D.C. Dulles Intl

Sun 4/26

6:47 pm-11:15 pm

1 stop7h 28m

$349
Cheapest one-way

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 4/14

6:00 am-5:22 pm

1 stop8h 22m

$159

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Mon 5/18

7:27 pm-7:34 am

1 stop9h 07m

$205

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 8/8

6:04 am-7:00 pm

1 stop9h 56m

$248

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 3/24

6:00 am-5:22 pm

1 stop8h 22m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 16 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on San Luis Obispo-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 Luis Obispo-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 Luis Obispo-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 Luis Obispo-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 Luis Obispo-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 Luis Obispo to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Luis Obispo 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 Luis Obispo to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport?

Currently, October is the cheapest month in which you can book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport (average of $208). Flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $599). 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.

How much does it cost to fly round-trip from San Luis Obispo to Washington, D.C. Dulles Intl Airport?

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 12, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines and United Airlines from San Luis Obispo to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
12,029 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Alaska Airlines
8.0
Very good
12,029 reviews
Alaska Airlines
8.0
Very good
12,029 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
United Airlines
7.4
Good
9,418 reviews
Alaska Airlines
8.0
Very good
12,029 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Related info for your journey

Find useful and relevant information for your journey from San Luis Obispo to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Luis Obispo to Washington, D.C. Dulles Intl?

    San Luis Obispo County (SBP), located 3.3 mi from the city center, is the airport you fly out of when you book flights from San Luis Obispo to Washington, D.C. Dulles Intl. 2 airlines have flights from County to Washington, D.C. Dulles Intl on a regular basis. Booking flights from San Luis Obispo County to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

  • How long is the flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from San Luis Obispo to Washington, D.C. Dulles Intl Airport in 25h 35m. Fly via Alaska Airlines to get the fastest option. The distance between San Luis Obispo and Washington, D.C. Dulles Intl Airport is about 2370 mi.

  • What are the cheapest airlines flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $264, United Airlines will fly you from San Luis Obispo to Washington, D.C. Dulles Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Alaska Airlines for as low as $311. These flights start at 47% lower than the current average price 3 months from now.

  • Can I find deals for flights from San Luis Obispo to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on San Luis Obispo to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Luis Obispo to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Luis Obispo to Dulles Intl.

  • Can I find deals for business class flights from San Luis Obispo to Dulles Intl?

    Yes. Cheapflights offers flight deals from San Luis Obispo to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport (average of $208). Flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $599). 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.

See more FAQs

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 locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park

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Alternative routes for San Luis Obispo to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Reagan-National flights
Los Angeles to Dulles Intl flights
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San Francisco to Reagan-National flights
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San Francisco to Baltimore flights
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San Diego to Reagan-National flights
Ontario to Reagan-National flights
San Diego to Baltimore flights
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Ontario to Baltimore flights
San Jose to Baltimore flights
San Jose to Reagan-National flights
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Las Vegas to Baltimore flights
Oakland to Dulles Intl flights
Santa Ana to Dulles Intl flights
Oakland to Baltimore flights
Sacramento to Reagan-National flights
Oakland to Reagan-National flights
Santa Ana to Reagan-National flights
Las Vegas to Reagan-National flights
Sacramento to Baltimore flights
Santa Ana to Baltimore flights
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Fresno to Dulles Intl flights
Burbank to Baltimore flights
Palm Springs to Dulles Intl flights
Reno to Dulles Intl flights
Burbank to Reagan-National flights
Fresno to Reagan-National flights
Long Beach to Dulles Intl flights
San Luis Obispo to Baltimore flights
Fresno to Baltimore flights
Palm Springs to Baltimore flights
Palm Springs to Reagan-National flights
Reno to Reagan-National flights
Long Beach to Baltimore flights
Reno to Baltimore flights
Santa Barbara to Dulles Intl flights
Bakersfield to Dulles Intl flights
Long Beach to Reagan-National flights
San Luis Obispo to Reagan-National flights
Bakersfield to Baltimore flights

Top 2 airlines flying from San Luis Obispo to Dulles Intl

Discover the top 2 airlines that operate flights from San Luis Obispo 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$519FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$311Average$511FlexibilityNo cancel feeOn-time75%

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