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 39% 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 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.

$178+ 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	$355 (Alaska Airlines)
One-way from	$178 (American Airlines)
Popular in	May
Cheapest in	March
Average price	$567

From Washington, D.C. Dulles Intl to San Luis Obispo County

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One-way flight from Washington, D.C. Dulles Intl to San Luis Obispo County

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Highest demand for flights based on searches. 14% potential increase in price ($91 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in September 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 September 16, 2025.

Wed 10/86:25 amIAD - SBP

1 stop15h 13mAlaska Airlines

Tue 10/142:19 pmSBP - IAD

1 stop23h 23mAlaska Airlines

Deal found 9/14

$355

Tue 10/710:25 amIAD - SBP

2 stops11h 02mAmerican Airlines

Tue 1/2012:28 pmSBP - IAD

1 stop6h 50mAmerican Airlines

Deal found 9/14

$360

Sat 11/157:43 amIAD - SBP

1 stop14h 18mAlaska Airlines

Mon 11/175:35 pmSBP - IAD

2 stops20h 38mAlaska Airlines

Deal found 9/15

$369

Sat 11/158:25 amIAD - SBP

1 stop7h 59mUnited Airlines

Mon 11/178:33 amSBP - IAD

1 stop9h 52mUnited Airlines

Deal found 9/15

$375

Thu 11/66:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Tue 11/119:53 amSBP - IAD

2 stops9h 40mAmerican Airlines

Deal found 9/15

$380

Thu 10/97:00 amIAD - SBP

1 stop10h 04mUnited Airlines

Tue 10/146:22 pmSBP - IAD

1 stop8h 14mUnited Airlines

Deal found 9/15

$388

Fri 11/145:40 pmIAD - SBP

1 stop8h 46mAlaska Airlines

Mon 11/177:56 pmSBP - IAD

1 stop17h 44mAlaska Airlines

Deal found 9/15

$394

Thu 11/133:25 pmIAD - SBP

1 stop9h 40mUnited Airlines

Mon 11/176:00 amSBP - IAD

1 stop7h 27mUnited Airlines

Deal found 9/15

$395

Fri 12/57:59 amIAD - SBP

2 stops10h 37mAmerican Airlines

Mon 12/812:28 pmSBP - IAD

1 stop7h 31mAmerican Airlines

Deal found 9/15

$400

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 September 16, 2025.

Wed 10/86:25 amIAD - SBP

1 stop15h 13mAlaska Airlines

Tue 10/142:19 pmSBP - IAD

1 stop23h 23mAlaska Airlines

Deal found 9/14

$355

Thu 11/66:30 amIAD - SBP

1 stop8h 49mUnited Airlines

Tue 11/116:25 pmSBP - IAD

1 stop9h 30mUnited Airlines

Deal found 9/15

$375

Fri 1/26:29 pmIAD - SBP

1 stop8h 06mAlaska Airlines

Wed 1/76:00 amSBP - IAD

1 stop8h 25mAlaska Airlines

Deal found 9/14

$375

Sat 11/154:10 pmIAD - SBP

1 stop8h 55mUnited Airlines

Mon 11/176:25 pmSBP - IAD

1 stop8h 02mUnited Airlines

Deal found 9/15

$375

Thu 11/135:40 pmIAD - SBP

1 stop8h 46mAlaska Airlines

Mon 11/175:35 pmSBP - IAD

2 stops20h 38mAlaska Airlines

Deal found 9/15

$389

Fri 12/55:37 pmIAD - SBP

1 stop8h 36mAlaska Airlines

Mon 12/86:00 amSBP - IAD

1 stop8h 30mAlaska Airlines

Deal found 9/15

$394

Fri 11/145:40 pmIAD - SBP

1 stop8h 46mAlaska Airlines

Mon 11/177:56 pmSBP - IAD

1 stop17h 44mAlaska Airlines

Deal found 9/16

$394

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 September 16, 2025 and is based on user searches.

Wed 9/179:00 amIAD - SBP

1 stop11h 37mHawaiian Airlines

Wed 9/246:29 pmSBP - IAD

1 stop10h 04mHawaiian Airlines

Deal found 9/14

$450

Tue 9/304:00 pmIAD - SBP

1 stop9h 14mUnited Airlines

Sat 10/410:55 amSBP - IAD

1 stop7h 15mUnited Airlines

Deal found 9/15

$451

Tue 9/3011:47 amIAD - SBP

2 stops9h 56mAmerican Airlines

Sat 10/412:24 pmSBP - IAD

1 stop7h 24mAmerican Airlines

Deal found 9/15

$456

Thu 10/27:00 amIAD - SBP

1 stop13h 37mAlaska Airlines

Mon 10/67:50 pmSBP - IAD

1 stop8h 43mAlaska Airlines

Deal found 9/14

$475

Fri 10/36:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Mon 10/64:36 pmSBP - IAD

2 stops14h 19mAmerican Airlines

Deal found 9/13

$481

Tue 10/710:25 amIAD - SBP

2 stops11h 02mAmerican Airlines

Tue 1/2012:28 pmSBP - IAD

1 stop6h 50mAmerican Airlines

Deal found 9/14

$360

Wed 10/86:25 amIAD - SBP

1 stop15h 13mAlaska Airlines

Tue 10/142:19 pmSBP - IAD

1 stop23h 23mAlaska Airlines

Deal found 9/16

$355

Thu 10/97:00 amIAD - SBP

1 stop10h 04mUnited Airlines

Tue 10/146:22 pmSBP - IAD

1 stop8h 14mUnited Airlines

Deal found 9/15

$388

Thu 10/95:42 pmIAD - SBP

1 stop8h 42mAlaska Airlines

Tue 10/142:14 pmSBP - IAD

2 stops23h 28mAlaska Airlines

Deal found 9/15

$485

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 September 16, 2025.

Wed 12/36:00 amIAD - SBP

1 stop8h 41mAmerican Airlines

Deal found 9/13

$178

Wed 10/295:40 pmIAD - SBP

2 stops26h 15mAlaska Airlines

Deal found 9/16

$197

Sun 10/56:25 amIAD - SBP

1 stop8h 09mAmerican Airlines

Deal found 9/14

$198

Sat 11/16:45 amIAD - SBP

2 stops12h 21mAmerican Airlines

Deal found 9/16

$233

Thu 10/165:42 pmIAD - SBP

1 stop8h 42mAlaska Airlines

Deal found 9/16

$247

Mon 11/36:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Deal found 9/16

$248

Sun 10/56:25 amIAD - SBP

1 stop15h 33mAlaska Airlines

Deal found 9/15

$284

Thu 10/305:40 pmIAD - SBP

2 stops26h 15mAlaska Airlines

Deal found 9/16

$333

Tue 11/46:00 amIAD - SBP

3 stops18h 08mUnited Airlines

Deal found 9/16

$342

Fri 10/316:30 amIAD - SBP

2 stops18h 35mUnited Airlines

Deal found 9/16

$343

Sun 11/25:24 amIAD - SBP

2 stops12h 12mAmerican Airlines

Deal found 9/16

$345

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 10/8

6:25 am-6:38 pm

1 stop15h 13m

San Luis Obispo County

Tue 10/14

2:19 pm-4:42 pm

1 stop23h 23m

$355

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Thu 11/6

6:30 am-12:19 pm

1 stop8h 49m

San Luis Obispo County

Tue 11/11

6:25 pm-6:55 am

1 stop9h 30m

$375

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Fri 1/2

6:29 pm-11:35 pm

1 stop8h 06m

San Luis Obispo County

Wed 1/7

6:00 am-5:25 pm

1 stop8h 25m

$375

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Sat 11/15

4:10 pm-10:05 pm

1 stop8h 55m

San Luis Obispo County

Mon 11/17

6:25 pm-5:27 am

1 stop8h 02m

$375

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Thu 11/13

5:40 pm-11:26 pm

1 stop8h 46m

San Luis Obispo County

Mon 11/17

5:35 pm-5:13 pm

2 stops20h 38m

$389

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Fri 12/5

5:37 pm-11:13 pm

1 stop8h 36m

San Luis Obispo County

Mon 12/8

6:00 am-5:30 pm

1 stop8h 30m

$394

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Fri 11/14

5:40 pm-11:26 pm

1 stop8h 46m

San Luis Obispo County

Mon 11/17

7:56 pm-4:40 pm

1 stop17h 44m

$394

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 12/3

6:00 am-11:41 am

1 stop8h 41m

$178

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Wed 10/29

5:40 pm-11:26 pm

1 stop8h 46m

$178

Washington, D.C.San Luis Obispo

IAD - SBP

IADSBP

Washington, D.C. Dulles Intl

Thu 10/30

5:40 pm-11:26 pm

1 stop8h 46m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 13 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 $511). 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

8,924 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

8,924 reviews

United Airlines

7.4

Good

8,924 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

8,924 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.
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 49m. Alaska Airlines provides one of the quickest options available for as low as $375. The distance from Washington, D.C. Dulles Intl Airport to San Luis Obispo is about 2370 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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 39% 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 $511). 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

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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$483	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$424	Average$567	FlexibilityNo cancel fee	On-time69%

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$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 12/3. 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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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 September 16, 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 September 16, 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?

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

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 September 16, 2025.