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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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SBP — IAD
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheap 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 28, 2025.

Round-trip from

$318
(Alaska Airlines)

One-way from

$159
(Hawaiian Airlines)

Popular in

March

Cheapest in

January

Average price

$645
From San Luis Obispo County to Washington, D.C. Dulles Intl
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One-way flight from San Luis Obispo County to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 8/266:29 pmSBP - IAD
1 stop10h 03mAlaska Airlines
Tue 9/26:09 pmIAD - SBP
1 stop26h 28mAlaska Airlines
Deal found 7/28$318
This American Airlines deal was found by Cheapflights users on 7/28. 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 9/1312:24 pmSBP - IAD
1 stop7h 24mAmerican Airlines
Wed 9/176:25 amIAD - SBP
1 stop8h 09mAmerican Airlines
Deal found 7/28$319
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 11/206:00 amSBP - IAD
1 stop8h 13mHawaiian Airlines
Thu 12/45:51 pmIAD - SBP
1 stop8h 16mHawaiian Airlines
Deal found 7/28$428

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 28, 2025.
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

San Luis Obispo

Fly to

Dulles Intl

Route

Depart

Return

Price

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 8/26

6:29 pm-7:32 am

1 stop10h 03m

Washington, D.C. Dulles Intl

Tue 9/2

6:09 pm-5:37 pm

1 stop26h 28m

$318

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 9/13

12:24 pm-10:48 pm

1 stop7h 24m

Washington, D.C. Dulles Intl

Wed 9/17

6:25 am-11:34 am

1 stop8h 09m

$319

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Thu 11/20

6:00 am-5:13 pm

1 stop8h 13m

Washington, D.C. Dulles Intl

Thu 12/4

5:51 pm-11:07 pm

1 stop8h 16m

$428

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 8/12

6:00 pm-5:18 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Sat 8/16

3:56 pm-8:43 pm

1 stop7h 47m

$451

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 9/9

6:29 pm-7:33 am

1 stop10h 04m

$159

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 9/9

6:00 am-10:45 pm

2 stops13h 45m

$165

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sun 8/31

5:15 am-3:34 pm

1 stop7h 19m

$185

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Mon 10/6

7:50 pm-7:33 am

1 stop8h 43m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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, August is the cheapest month in which you can book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 SBP to IAD?

Find hourly flight availability from San Luis Obispo 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 July 28, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 10% on flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport by exploring options for tickets at noon.

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 28, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Hawaiian 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
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,604 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,892 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Currently priced at $318, Alaska Airlines will fly you from San Luis Obispo to Washington, D.C. Dulles Intl Airport and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Hawaiian Airlines - these airlines can fly you to your destination from $319 and $428, respectively. These flights start at 37% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San Luis Obispo to Washington, D.C. Dulles Intl Airport one-way?

    $159 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $165 and $185, respectively.

  • 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, August is the cheapest month in which you can book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport (average of $309). Flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Dundalk

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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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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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$264Average$416FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$344Average$503FlexibilityNo cancel feeOn-time69%

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