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 $418. American Airlines is priced at 38% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to San Luis Obispo?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San Luis Obispo flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in San Luis Obispo ranges from 0.0 - 4.0 inches per month. December is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit San Luis Obispo when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Luis Obispo, 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 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to San Luis Obispo?

Flights from Washington, D.C. Dulles Intl Airport to San Luis Obispo are found to be more expensive on Thursday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Luis Obispo.

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

April can be a great time to fly to San Luis Obispo from Washington, D.C. Dulles Intl Airport with a flight ticket averaging about $576. Cheapflights users have found deals in the month of April for as cheap as $329. The most expensive prices can be found in the month of June.

What is the cheapest time of day to fly from IAD to SBP?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to San Luis Obispo in the morning. If you’re flexible enough to do this you can expect to save up to 6% on your trip compared to booking a flight at noon.

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.

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.

$140+ Flights from Washington, D.C. Dulles Intl Airport to San Luis Obispo

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Cheap flight deals from Dulles Intl to San Luis Obispo

Round-trip from	$336 (Hawaiian Airlines)
One-way from	$140 (American Airlines)
Popular in	May
Cheapest in	March
Average price	$670

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. 16% potential increase in price ($101 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find 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 August 14, 2025.

Wed 11/195:40 pmIAD - SBP

1 stop8h 46mHawaiian Airlines

Mon 11/246:00 amSBP - IAD

1 stop8h 12mHawaiian Airlines

Deal found 8/12

$336

Fri 9/126:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Tue 9/1612:24 pmSBP - IAD

1 stop7h 21mAmerican Airlines

Deal found 8/14

$337

Sat 11/226:12 pmIAD - SBP

1 stop8h 21mHawaiian Airlines

Fri 11/286:00 amSBP - IAD

1 stop8h 12mHawaiian Airlines

Deal found 8/14

$375

Sat 9/612:35 pmIAD - SBP

1 stop7h 53mUnited Airlines

Tue 9/95:15 amSBP - IAD

1 stop8h 28mUnited Airlines

Deal found 8/12

$379

Fri 9/125:52 pmIAD - SBP

1 stop25h 25mAlaska Airlines

Tue 9/162:12 pmSBP - IAD

1 stop23h 40mAlaska Airlines

Deal found 8/12

$382

Thu 10/25:52 pmIAD - SBP

1 stop22h 40mAlaska Airlines

Mon 10/62:14 pmSBP - IAD

2 stops23h 28mAlaska Airlines

Deal found 8/13

$389

Fri 9/126:35 amIAD - SBP

1 stop10h 51mUnited Airlines

Mon 9/152:19 pmSBP - IAD

1 stop7h 26mUnited Airlines

Deal found 8/13

$395

Best flights from Dulles Intl to San Luis Obispo
Discover carefully curated flight deals from Dulles Intl to San Luis Obispo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Wed 11/195:40 pmIAD - SBP

1 stop8h 46mHawaiian Airlines

Mon 11/246:00 amSBP - IAD

1 stop8h 12mHawaiian Airlines

Deal found 8/12

$336

Fri 9/126:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Tue 9/1612:24 pmSBP - IAD

1 stop7h 21mAmerican Airlines

Deal found 8/14

$337

Sun 10/56:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Tue 10/712:27 pmSBP - IAD

1 stop7h 24mAmerican Airlines

Deal found 8/13

$348

Sat 11/226:12 pmIAD - SBP

1 stop8h 21mHawaiian Airlines

Fri 11/286:00 amSBP - IAD

1 stop8h 12mHawaiian Airlines

Deal found 8/13

$375

Wed 11/196:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Mon 11/247:11 pmSBP - IAD

2 stops10h 30mAmerican Airlines

Deal found 8/12

$353

Last-minute flights from Dulles Intl to San Luis Obispo
Discover last-minute flight deals from Dulles Intl to San Luis Obispo. Data last updated August 14, 2025 and is based on user searches.

Sat 8/2312:45 pmIAD - SBP

1 stop10h 28mUnited Airlines

Sat 8/305:15 amSBP - IAD

1 stop7h 19mUnited Airlines

Deal found 8/14

$451

Sat 8/236:27 amIAD - SBP

1 stop7h 58mAmerican Airlines

Sat 8/306:00 amSBP - IAD

2 stops10h 42mAmerican Airlines

Deal found 8/14

$456

Sat 9/612:35 pmIAD - SBP

1 stop7h 53mUnited Airlines

Tue 9/95:15 amSBP - IAD

1 stop8h 28mUnited Airlines

Deal found 8/12

$379

Sat 9/69:00 amIAD - SBP

1 stop11h 37mHawaiian Airlines

Tue 9/96:29 pmSBP - IAD

1 stop10h 04mHawaiian Airlines

Deal found 8/12

$411

Fri 9/126:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Tue 9/1612:24 pmSBP - IAD

1 stop7h 21mAmerican Airlines

Deal found 8/14

$337

Fri 9/125:52 pmIAD - SBP

1 stop25h 25mAlaska Airlines

Tue 9/162:12 pmSBP - IAD

1 stop23h 40mAlaska Airlines

Deal found 8/12

$382

Fri 9/126:35 amIAD - SBP

1 stop10h 51mUnited Airlines

Mon 9/152:19 pmSBP - IAD

1 stop7h 26mUnited Airlines

Deal found 8/13

$395

One-way flights from Dulles Intl to San Luis Obispo
Search for one-way flight options from Dulles Intl to San Luis Obispo. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Wed 12/36:36 amIAD - SBP

1 stop8h 11mAmerican Airlines

Deal found 8/13

$140

Sat 10/115:42 pmIAD - SBP

1 stop7h 59mAlaska Airlines

Deal found 8/14

$178

Wed 10/19:00 amIAD - SBP

1 stop11h 37mHawaiian Airlines

Deal found 8/13

$179

Wed 10/87:00 amIAD - SBP

1 stop10h 04mUnited Airlines

Deal found 8/14

$190

Fri 9/126:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Deal found 8/13

$209

Thu 10/95:42 pmIAD - SBP

1 stop8h 42mAlaska Airlines

Deal found 8/14

$227

Sun 10/126:45 amIAD - SBP

1 stop7h 51mAmerican Airlines

Deal found 8/14

$248

Wed 10/88:09 amIAD - SBP

2 stops13h 18mAmerican Airlines

Deal found 8/14

$253

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 11/19

5:40 pm-11:26 pm

1 stop8h 46m

San Luis Obispo County

Mon 11/24

6:00 am-5:12 pm

1 stop8h 12m

$336

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Fri 9/12

6:25 am-11:34 am

1 stop8h 09m

San Luis Obispo County

Tue 9/16

12:24 pm-10:45 pm

1 stop7h 21m

$337

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sun 10/5

6:25 am-11:34 am

1 stop8h 09m

San Luis Obispo County

Tue 10/7

12:27 pm-10:51 pm

1 stop7h 24m

$348

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 11/19

6:04 am-11:43 am

1 stop8h 39m

San Luis Obispo County

Mon 11/24

7:11 pm-8:41 am

2 stops10h 30m

$353

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sat 11/22

6:12 pm-11:33 pm

1 stop8h 21m

San Luis Obispo County

Fri 11/28

6:00 am-5:12 pm

1 stop8h 12m

$375

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Tue 9/2

10:25 am-5:28 pm

1 stop10h 03m

$140

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 12/3

6:36 am-11:47 am

1 stop8h 11m

$140

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sat 9/6

6:35 am-12:18 pm

1 stop8h 43m

$140

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sat 10/11

5:42 pm-10:41 pm

1 stop7h 59m

$178

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 10/1

9:00 am-5:37 pm

1 stop11h 37m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 12 results

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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Luis Obispo (average of $374). Flying from Washington, D.C. Dulles Intl Airport to San Luis Obispo in June is currently the most expensive (average of $512). 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.

Reviews of airlines servicing San Luis Obispo

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

8,916 reviews

Reviews

1 / 20

4.0

Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

United Airlines

7.4

Good

8,916 reviews

United Airlines

7.4

Good

8,916 reviews

Reviews

1 / 20

4.0

Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

American Airlines

7.2

Good

10,000 reviews

United Airlines

7.4

Good

8,916 reviews

Reviews

1 / 20

4.0

Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

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.
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 $418. American Airlines is priced at 38% 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Luis Obispo (average of $374). Flying from Washington, D.C. Dulles Intl Airport to San Luis Obispo in June is currently the most expensive (average of $512). 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

Morro Bay

Avila Beach

Arroyo Grande

San Simeon

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Top 2 airlines flying from Dulles Intl to San Luis Obispo

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$322	Average$507	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$418	Average$556	FlexibilityNo cancel fee	On-time69%

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$140+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to San Luis Obispo with Cheapflights

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Cheap flight deals from Dulles Intl to San Luis Obispo

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Find flight deals from Dulles Intl to San Luis Obispo

Cheapest flights from Dulles Intl to San Luis ObispoExplore 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 August 14, 2025.

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 August 14, 2025.

Cheapflights Fare Finder

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.

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.

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?

Reviews of airlines servicing San Luis Obispo

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?

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

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

How can I 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?

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

Traveling to a place near San Luis Obispo?

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Alternative routes for Dulles Intl to San Luis Obispo

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Top 2 airlines flying from Dulles Intl to San Luis Obispo

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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 August 14, 2025.