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Dulles Intl

$185+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SBP — IAD
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
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 July 23, 2026.

This American Airlines deal was found by Cheapflights users on 7/19. 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 8/2712:29 pm
SBP
-
IAD
1 stop7h 23m
American Airlines
Mon 8/316:09 am
IAD
-
SBP
1 stop8h 30m
American Airlines
Deal found 7/19$369
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/2510:48 am
SBP
-
IAD
1 stop7h 36m
United Airlines
Tue 9/298:15 am
IAD
-
SBP
1 stop8h 04m
United Airlines
Deal found 7/22$374
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/236:40 pm
SBP
-
IAD
1 stop8h 15m
United Airlines
Sun 9/276:35 am
IAD
-
SBP
1 stop8h 27m
United Airlines
Deal found 7/22$379
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/18:00 am
SBP
-
IAD
1 stop8h 05m
United Airlines
Sat 9/121:00 pm
IAD
-
SBP
1 stop7h 22m
United Airlines
Deal found 7/21$401
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Fri 9/1110:18 am
SBP
-
IAD
1 stop10h 41m
Alaska Airlines
Sun 9/137:47 pm
IAD
-
SBP
1 stop21h 57m
Alaska Airlines
Deal found 7/21$409
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Fri 9/253:24 pm
SBP
-
IAD
1 stop23h 50m
Alaska Airlines
Tue 9/297:47 pm
IAD
-
SBP
1 stop21h 57m
Alaska Airlines
Deal found 7/22$424
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 11/2312:36 pm
SBP
-
IAD
1 stop7h 43m
American Airlines
Wed 12/26:00 am
IAD
-
SBP
1 stop8h 39m
American Airlines
Deal found 7/22$427
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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 9/2310:18 am
SBP
-
IAD
1 stop10h 41m
Alaska Airlines
Tue 9/297:47 pm
IAD
-
SBP
1 stop21h 57m
Alaska Airlines
Deal found 7/20$431
This United Airlines deal was found by Cheapflights users on 7/19. 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 7/286:00 am
SBP
-
IAD
1 stop7h 26m
United Airlines
Sun 8/238:35 am
IAD
-
SBP
1 stop9h 46m
United Airlines
Deal found 7/19$439
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 9/510:11 am
SBP
-
IAD
1 stop16h 29m
Alaska Airlines
Sun 9/137:47 pm
IAD
-
SBP
1 stop21h 57m
Alaska Airlines
Deal found 7/22$440
This Booking.com deal was found by Cheapflights users on 7/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:24 pm
SBP
-
IAD
1 stop23h 50m
Alaska Airlines
Tue 9/297:00 am
IAD
-
SBP
2 stops19h 50m
Alaska Airlines
Deal found 7/22$445

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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(American Airlines)

One-way from

$185
(Priceline)

Popular in

June

Cheapest in

March

Average price

$543
Provider with most accurate pricing for San Luis Obispo County-Washington, D.C. Dulles Intl flight deals.
Search Deals
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. 4% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 23, 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

Fri 9/25

3:24 pm-6:14 pm

1 stop23h 50m

Washington, D.C. Dulles Intl

Tue 9/29

7:47 pm-2:44 pm

1 stop21h 57m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Mon 8/24

2:20 pm-12:57 am

1 stop7h 37m

Washington, D.C. Dulles Intl

Sat 8/29

6:42 am-11:53 am

1 stop8h 11m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Mon 8/24

8:33 pm-7:00 am

1 stop7h 27m

Washington, D.C. Dulles Intl

Sun 8/30

6:42 am-11:53 am

1 stop8h 11m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Mon 8/24

2:20 pm-12:57 am

1 stop7h 37m

Washington, D.C. Dulles Intl

Mon 8/31

9:45 am-3:21 pm

1 stop8h 36m

$369
Quickest round-trip

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 9/1

8:00 am-7:05 pm

1 stop8h 05m

Washington, D.C. Dulles Intl

Sat 9/12

1:00 pm-5:22 pm

1 stop7h 22m

$401

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Fri 9/11

10:18 am-11:59 pm

1 stop10h 41m

Washington, D.C. Dulles Intl

Sun 9/13

7:47 pm-2:44 pm

1 stop21h 57m

$409

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Mon 11/23

6:01 am-5:30 pm

1 stop8h 29m

Washington, D.C. Dulles Intl

Wed 12/2

5:25 pm-11:14 pm

1 stop8h 49m

$424

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 9/5

10:11 am-5:40 am

1 stop16h 29m

Washington, D.C. Dulles Intl

Sun 9/13

7:47 pm-2:44 pm

1 stop21h 57m

$440

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Thu 9/24

3:24 pm-6:14 pm

1 stop23h 50m

Washington, D.C. Dulles Intl

Tue 9/29

7:00 am-11:50 pm

2 stops19h 50m

$445
Cheapest one-way

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 9/5

3:24 pm-5:48 pm

2 stops23h 24m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 17 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

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

Airfare is below average for this route at the moment.

San Luis Obispo to Washington, D.C. Dulles Intl Airport flights typically cost between $560 and $746 in August.
The cheapest round-trip price found within the last 5 days was $369 on United Airlines (Aug 24-Aug 29).

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 July 23, 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
7.9
Good
12,696 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

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
7.9
Good
12,696 reviews
Alaska Airlines
7.9
Good
12,696 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

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
10,026 reviews
Alaska Airlines
7.9
Good
12,696 reviews

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

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 7h 37m. Fly via Alaska Airlines or United Airlines to get the fastest option. The distance between San Luis Obispo and Washington, D.C. Dulles Intl Airport is about 2370 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $336. These flights start at 51% 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.

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
Tysons
Arlington
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Sterling
Clinton
Hunt Valley
Cordova

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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.
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Los Angeles to Baltimore flights
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Burbank to Dulles Intl flights
Oakland to Dulles Intl flights
Burbank to Baltimore flights
San Jose to Baltimore flights
Santa Ana to Reagan-National flights
Santa Ana to Baltimore flights
Oakland to Baltimore flights
Las Vegas to Reagan-National flights
Oakland to Reagan-National flights
Sacramento to Baltimore flights
Sacramento to Reagan-National flights
Burbank to Reagan-National flights
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Fresno to Dulles Intl flights
Fresno to Reagan-National flights
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Reno to Baltimore flights
Fresno to Baltimore flights
San Luis Obispo to Baltimore flights
Santa Barbara to Dulles Intl flights
Long Beach to Reagan-National flights
Palm Springs to Reagan-National flights
Reno to Reagan-National flights
Long Beach to Baltimore flights
Santa Barbara to Baltimore flights
San Luis Obispo to Reagan-National flights
Palm Springs to Baltimore flights
Monterey 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$562FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$336Average$543FlexibilityNo cancel feeOn-time75%

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