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San Luis Obispo

$178+ Cheap flights from Dulles Intl (IAD) to San Luis Obispo (SBP)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SBP
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Dulles Intl to San Luis Obispo

Cheapest flights from Dulles Intl to San Luis Obispo
Explore the most affordable flight options available from Dulles Intl to San Luis Obispo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/3. 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 12/314:00 pmIAD - SBP
1 stop8h 05mUnited Airlines
Wed 1/710:45 amSBP - IAD
1 stop7h 09mUnited Airlines
Deal found 12/3$428
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 12/165:37 pmIAD - SBP
1 stop8h 41mAlaska Airlines
Thu 12/256:00 amSBP - IAD
1 stop8h 21mAlaska Airlines
Deal found 12/2$452
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/164:00 pmIAD - SBP
1 stop8h 12mUnited Airlines
Wed 12/316:23 pmSBP - IAD
1 stop9h 24mUnited Airlines
Deal found 12/2$464
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Tue 12/1611:25 amIAD - SBP
2 stops10h 03mAmerican Airlines
Thu 12/2512:36 pmSBP - IAD
1 stop6h 57mAmerican Airlines
Deal found 12/2$469
This American Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/319:12 amIAD - SBP
2 stops12h 23mAmerican Airlines
Wed 1/76:00 amSBP - IAD
2 stops12h 17mAmerican Airlines
Deal found 12/3$470
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/196:20 amIAD - SBP
1 stop10h 12mUnited Airlines
Wed 1/72:21 pmSBP - IAD
1 stop7h 38mUnited Airlines
Deal found 12/2$520
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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.
Mon 12/155:37 pmIAD - SBP
1 stop8h 41mAlaska Airlines
Wed 12/176:00 amSBP - IAD
1 stop8h 30mAlaska Airlines
Deal found 12/2$543
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Thu 12/114:00 pmIAD - SBP
1 stop8h 12mUnited Airlines
Sat 12/137:15 amSBP - IAD
1 stop8h 39mUnited Airlines
Deal found 12/2$544
This American Airlines deal was found by Cheapflights users on 12/2. 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 12/112:06 pmIAD - SBP
2 stops11h 07mAmerican Airlines
Sat 12/1312:28 pmSBP - IAD
1 stop7h 00mAmerican Airlines
Deal found 12/2$549

Find flight deals from Dulles Intl to San Luis Obispo

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San Luis Obispo (SBP). 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$303
(Alaska Airlines)

One-way from

$178
(Alaska Airlines)

Popular in

May

Cheapest in

March

Average price

$662
Provider with most accurate pricing for Washington, D.C. Dulles Intl-San Luis Obispo County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-San Luis Obispo County flights.
Search Deals
From Washington, D.C. Dulles Intl to San Luis Obispo County
Search Deals
One-way flight from Washington, D.C. Dulles Intl to San Luis Obispo County
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to San Luis Obispo 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 December 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Luis Obispo that are best for you.

Fly from

Dulles Intl

Fly to

San Luis Obispo

Route

Depart

Return

Price

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sat 1/10

5:26 pm-11:20 pm

1 stop8h 54m

San Luis Obispo County

Tue 1/13

6:17 pm-4:26 pm

1 stop19h 09m

$303

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Mon 2/9

6:04 pm-5:37 pm

1 stop26h 33m

San Luis Obispo County

Fri 2/20

5:34 pm-5:20 pm

2 stops20h 46m

$334

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 2/11

5:26 pm-11:20 pm

1 stop8h 54m

San Luis Obispo County

Wed 2/18

12:19 pm-5:27 pm

1 stop26h 08m

$342

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Fri 2/6

5:26 pm-4:34 pm

1 stop26h 08m

San Luis Obispo County

Sun 2/8

6:00 am-5:04 pm

1 stop8h 04m

$372

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Mon 3/2

6:20 pm-11:17 pm

1 stop7h 57m

San Luis Obispo County

Fri 3/6

6:00 am-5:27 pm

1 stop8h 27m

$374

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Tue 1/27

6:04 pm-11:20 pm

2 stops32h 16m

San Luis Obispo County

Fri 1/30

6:00 am-5:04 pm

1 stop8h 04m

$385

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Thu 5/7

5:37 pm-11:18 pm

1 stop8h 41m

San Luis Obispo County

Sat 5/9

6:00 am-5:23 pm

1 stop8h 23m

$402

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Tue 1/20

5:26 pm-11:20 pm

1 stop8h 54m

$178

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 1/14

5:26 pm-11:20 pm

1 stop8h 54m

$178

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sat 1/17

5:26 pm-11:20 pm

1 stop8h 54m

$178

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 19 results
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Compare providers for flights from Dulles Intl to San Luis Obispo

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 Dulles Intl to San Luis Obispo in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Luis Obispo flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-San Luis Obispo flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Luis Obispo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Luis Obispo 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 Washington, D.C. Dulles Intl Airport-San Luis Obispo 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 Dulles Intl to San Luis Obispo

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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Luis Obispo (average of $275). Flying from Washington, D.C. Dulles Intl Airport to San Luis Obispo in November is currently the most expensive (average of $568). 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 Washington, D.C. Dulles Intl Airport to San Luis Obispo?

Reviews of airlines servicing San Luis Obispo

Get insights into the airlines that provide service to San Luis Obispo. 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 San Luis Obispo. Reviews last updated December 4, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Washington, D.C. Dulles Intl Airport to San Luis Obispo 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.
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
American Airlines
7.2
Good
11,047 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to San Luis Obispo. 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 into for flights to San Luis Obispo from Washington, D.C. Dulles Intl?

    If you book a flight to San Luis Obispo from Washington, D.C. Dulles Intl, you will be flying to County, which is the city’s only airport. San Luis Obispo County (SBP) is located 3.3 mi from the center of San Luis Obispo. There are 0 flights from Washington, D.C. Dulles Intl to County per day from 2 different airlines.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to San Luis Obispo can take about 8h 54m. Alaska Airlines provides one of the quickest options available for as low as $303. The distance from Washington, D.C. Dulles Intl Airport to San Luis Obispo is about 2370 mi.

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

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to San Luis Obispo is American Airlines. Our recent data shows that you can find tickets from as low as $322 on this airline. An additional option worth looking into is United Airlines, starting at $424. American Airlines is priced at 40% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to San Luis Obispo 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 Washington, D.C. Dulles Intl Airport to San Luis Obispo?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Luis Obispo (average of $275). Flying from Washington, D.C. Dulles Intl Airport to San Luis Obispo in November is currently the most expensive (average of $568). 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 San Luis Obispo?

Book flights to San Luis Obispo if you plan to visit one of these locations
Morro Bay
Arroyo Grande
Avila Beach
San Simeon

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Alternative routes for Dulles Intl to San Luis Obispo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Dulles Intl to San Luis Obispo

Discover the top 2 airlines that operate flights from Dulles Intl to San Luis Obispo. 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$322Average$553FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$424Average$567FlexibilityNo cancel feeOn-time69%

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