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 $311. These flights start at 48% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Most accurate provider : When it comes to deals on San Luis Obispo-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Luis Obispo-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 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 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.

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.

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.

$213+ Flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport

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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 diciembre 12, 2025.

mar. 12/235:00 amSBP - IAD

1 stop8h 39mUnited Airlines

mié. 12/314:00 pmIAD - SBP

1 stop8h 05mUnited Airlines

Deal found 12/10

$564

dom. 12/146:00 amSBP - IAD

1 stop8h 30mAlaska Airlines

mar. 12/165:37 pmIAD - SBP

1 stop8h 41mAlaska Airlines

Deal found 12/10

$589

jue. 12/258:15 amSBP - IAD

1 stop8h 03mUnited Airlines

lun. 12/296:20 amIAD - SBP

1 stop17h 45mUnited Airlines

Deal found 12/9

$704

mar. 12/236:54 pmSBP - IAD

2 stops10h 48mAmerican Airlines

mar. 12/306:05 amIAD - SBP

1 stop8h 41mAmerican Airlines

Deal found 12/10

$722

mar. 12/236:00 amSBP - IAD

1 stop8h 21mAlaska Airlines

mié. 12/316:29 pmIAD - SBP

2 stops27h 36mAlaska Airlines

Deal found 12/12

$752

jue. 12/2512:36 pmSBP - IAD

1 stop6h 57mAmerican Airlines

lun. 12/296:35 amIAD - SBP

2 stops12h 25mAmerican Airlines

Deal found 12/9

$775

Best flights from San Luis Obispo to Dulles Intl
Discover carefully curated flight deals from San Luis Obispo to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

mié. 1/286:17 pmSBP - IAD

1 stop19h 09mAlaska Airlines

sáb. 1/315:26 pmIAD - SBP

1 stop8h 54mAlaska Airlines

Deal found 12/9

$333

mar. 4/2112:27 pmSBP - IAD

1 stop6h 52mAmerican Airlines

mié. 4/296:45 amIAD - SBP

1 stop7h 54mAmerican Airlines

Deal found 12/12

$369

mar. 2/246:00 amSBP - IAD

1 stop8h 27mAlaska Airlines

mié. 3/46:20 pmIAD - SBP

1 stop7h 57mAlaska Airlines

Deal found 12/10

$342

mar. 3/3112:45 pmSBP - IAD

1 stop7h 08mAmerican Airlines

mar. 4/146:45 amIAD - SBP

1 stop7h 54mAmerican Airlines

Deal found 12/10

$369

mar. 2/106:00 amSBP - IAD

1 stop8h 04mAlaska Airlines

sáb. 2/146:20 pmIAD - SBP

1 stop7h 57mAlaska Airlines

Deal found 12/10

$342

Last-minute flights from San Luis Obispo to Dulles Intl
Discover last-minute flight deals from San Luis Obispo to Dulles Intl. Data last updated diciembre 12, 2025 and is based on user searches.

jue. 1/157:08 pmSBP - IAD

2 stops12h 50mAmerican Airlines

lun. 1/196:00 amIAD - SBP

1 stop9h 17mAmerican Airlines

Deal found 12/11

$442

jue. 1/156:00 amSBP - IAD

2 stops14h 12mAmerican Airlines

dom. 1/186:00 amIAD - SBP

2 stops13h 02mAmerican Airlines

Deal found 12/11

$447

jue. 1/153:12 pmSBP - IAD

1 stop22h 52mAlaska Airlines

lun. 1/195:26 pmIAD - SBP

1 stop26h 08mAlaska Airlines

Deal found 12/11

$453

jue. 1/226:17 pmSBP - IAD

1 stop19h 09mAlaska Airlines

lun. 1/266:04 pmIAD - SBP

1 stop26h 33mAlaska Airlines

Deal found 12/10

$354

mié. 1/286:17 pmSBP - IAD

1 stop19h 09mAlaska Airlines

sáb. 1/315:26 pmIAD - SBP

1 stop8h 54mAlaska Airlines

Deal found 12/9

$333

mié. 1/285:00 amSBP - IAD

3 stops13h 14mUnited Airlines

sáb. 1/314:11 pmIAD - SBP

1 stop8h 04mUnited Airlines

Deal found 12/11

$479

One-way flights from San Luis Obispo to Dulles Intl
Search for one-way flight options from San Luis Obispo to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated diciembre 12, 2025.

lun. 1/263:12 pmSBP - IAD

1 stop22h 52mAlaska Airlines

Deal found 12/11

$213

dom. 12/216:00 amSBP - IAD

1 stop8h 21mAlaska Airlines

Deal found 12/10

$298

lun. 1/265:00 amSBP - IAD

3 stops13h 14mUnited Airlines

Deal found 12/12

$396

lun. 1/266:17 pmSBP - IAD

3 stops38h 26mMultiple Airlines

Deal found 12/11

$536

Find flight deals from San Luis Obispo to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$333 (Alaska Airlines)
One-way from	$213 (Alaska Airlines)
Popular in	December
Cheapest in	November
Average price	$721

Provider with most accurate pricing for San Luis Obispo County-Washington, D.C. Dulles Intl flight deals.

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Provider most trusted by Cheapflights users for San Luis Obispo County-Washington, D.C. Dulles Intl flights.

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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. 5% potential increase in price ($28 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

mié. 1/28

6:17 pm-4:26 pm

1 stop19h 09m

Washington, D.C. Dulles Intl

sáb. 1/31

5:26 pm-11:20 pm

1 stop8h 54m

$333

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

mar. 2/24

6:00 am-5:27 pm

1 stop8h 27m

Washington, D.C. Dulles Intl

mié. 3/4

6:20 pm-11:17 pm

1 stop7h 57m

$342

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

mar. 2/10

6:00 am-5:04 pm

1 stop8h 04m

Washington, D.C. Dulles Intl

sáb. 2/14

6:20 pm-11:17 pm

1 stop7h 57m

$342

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

mar. 4/21

12:27 pm-10:19 pm

1 stop6h 52m

Washington, D.C. Dulles Intl

mié. 4/29

6:45 am-11:39 am

1 stop7h 54m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

mar. 3/31

12:45 pm-10:53 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

mar. 4/14

6:45 am-11:39 am

1 stop7h 54m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

lun. 1/26

3:12 pm-5:04 pm

1 stop22h 52m

$213

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

dom. 12/21

6:00 am-5:21 pm

1 stop8h 21m

$298

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

lun. 1/26

5:00 am-9:14 pm

3 stops13h 14m

$396

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

lun. 1/26

6:17 pm-11:43 am

3 stops38h 26m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from San Luis Obispo to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Luis Obispo to Dulles Intl in December.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*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 San Luis Obispo-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Luis Obispo-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 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 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

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

Currently, October is the cheapest month in which you can book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport (average of $208). Flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $633). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 24% on flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

Reviews of airlines servicing Dulles Intl

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

8.0

Very good

11,429 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Alaska Airlines

8.0

Very good

11,429 reviews

Alaska Airlines

8.0

Very good

11,429 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

United Airlines

7.4

Good

9,095 reviews

Alaska Airlines

8.0

Very good

11,429 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Related info for your journey

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 19h 09m. Fly via Alaska Airlines to get the fastest option. The distance between San Luis Obispo and Washington, D.C. Dulles Intl Airport is about 2370 mi.
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 $311. These flights start at 48% 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.
What is the cheapest month to book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport?
Currently, October is the cheapest month in which you can book a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport (average of $208). Flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $633). 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 San Luis Obispo to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$264	Average$547	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$311	Average$425	FlexibilityNo cancel fee	On-time75%

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$213+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.

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

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Cheap flight deals from San Luis Obispo to Dulles Intl

Cheapest flights from San Luis Obispo to Dulles IntlExplore 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 diciembre 12, 2025.

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 diciembre 12, 2025.

Find flight deals from San Luis Obispo to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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.

Compare providers for flights from San Luis Obispo to Dulles Intl

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 San Luis Obispo to Dulles Intl in December.

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.

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?

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

Reviews of airlines servicing Dulles Intl

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?

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

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

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

How can I 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?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for San Luis Obispo to Dulles Intl

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Top 2 airlines flying from San Luis Obispo to Dulles Intl

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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 diciembre 12, 2025.