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

Currently priced at $278, 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 43% lower than the current average price 3 months from now.

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

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

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).

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

Leaving on a Wednesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 52% on the overall cost on flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport.

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

Our data shows that November tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from San Luis Obispo. Users have commonly found prices around $495 for the month, but tickets can be as low as $294. Due to multiple factors, prepare for potentially higher prices in February.

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.

$178+ 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

Round-trip from	$337 (American Airlines)
One-way from	$178 (American Airlines)
Popular in	December
Cheapest in	November
Average price	$443

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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High demand for flights, 2% potential price rise

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Cheapest flight prices on average. 5% potential price decrease ($26 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 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 September 11, 2025.

Thu 11/612:28 pmSBP - IAD

1 stop7h 04mAmerican Airlines

Tue 11/116:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Deal found 9/8

$337

Tue 10/2112:27 pmSBP - IAD

1 stop7h 24mAmerican Airlines

Sat 10/256:11 amIAD - SBP

1 stop8h 26mAmerican Airlines

Deal found 9/11

$355

Sat 11/17:56 pmSBP - IAD

1 stop8h 27mHawaiian Airlines

Tue 11/45:40 pmIAD - SBP

1 stop8h 46mHawaiian Airlines

Deal found 9/8

$356

Sat 11/16:05 amSBP - IAD

2 stops10h 40mAmerican Airlines

Wed 11/56:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Deal found 9/11

$360

Tue 10/216:00 amSBP - IAD

1 stop7h 42mAlaska Airlines

Sat 10/258:53 amIAD - SBP

1 stop12h 45mAlaska Airlines

Deal found 9/10

$362

Sat 10/118:34 amSBP - IAD

1 stop7h 18mUnited Airlines

Wed 10/154:00 pmIAD - SBP

1 stop9h 14mUnited Airlines

Deal found 9/9

$369

Tue 10/146:22 pmSBP - IAD

1 stop8h 14mUnited Airlines

Fri 10/177:22 pmIAD - SBP

1 stop7h 21mUnited Airlines

Deal found 9/11

$375

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 September 11, 2025.

Thu 11/612:28 pmSBP - IAD

1 stop7h 04mAmerican Airlines

Tue 11/116:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Deal found 9/8

$337

Sat 11/16:00 amSBP - IAD

1 stop7h 27mUnited Airlines

Wed 11/53:59 pmIAD - SBP

1 stop8h 09mUnited Airlines

Deal found 9/10

$355

Sat 11/17:56 pmSBP - IAD

1 stop8h 27mHawaiian Airlines

Tue 11/45:40 pmIAD - SBP

1 stop8h 46mHawaiian Airlines

Deal found 9/8

$356

Tue 10/216:00 amSBP - IAD

1 stop7h 42mAlaska Airlines

Sat 10/258:53 amIAD - SBP

1 stop12h 45mAlaska Airlines

Deal found 9/10

$362

Fri 10/318:33 amSBP - IAD

1 stop7h 53mUnited Airlines

Wed 11/54:10 pmIAD - SBP

1 stop8h 55mUnited Airlines

Deal found 9/10

$362

Sat 11/16:05 amSBP - IAD

2 stops10h 40mAmerican Airlines

Wed 11/56:04 amIAD - SBP

2 stops12h 32mAmerican Airlines

Deal found 9/11

$365

Tue 10/142:19 pmSBP - IAD

1 stop23h 23mAlaska Airlines

Sat 10/185:42 pmIAD - SBP

1 stop7h 59mAlaska Airlines

Deal found 9/9

$369

Thu 12/2512:36 pmSBP - IAD

1 stop6h 57mAmerican Airlines

Wed 12/316:05 amIAD - SBP

1 stop8h 41mAmerican Airlines

Deal found 9/9

$369

Tue 10/146:22 pmSBP - IAD

1 stop8h 14mUnited Airlines

Fri 10/177:22 pmIAD - SBP

1 stop7h 21mUnited Airlines

Deal found 9/11

$375

Tue 12/235:20 pmSBP - IAD

1 stop21h 01mAlaska Airlines

Tue 12/306:21 pmIAD - SBP

1 stop8h 14mAlaska Airlines

Deal found 9/11

$375

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 September 11, 2025 and is based on user searches.

Tue 10/78:00 amSBP - IAD

1 stop7h 39mUnited Airlines

Sat 10/112:45 pmIAD - SBP

1 stop9h 07mUnited Airlines

Deal found 9/9

$403

Sat 10/118:34 amSBP - IAD

1 stop7h 18mUnited Airlines

Wed 10/154:00 pmIAD - SBP

1 stop9h 14mUnited Airlines

Deal found 9/9

$369

Mon 10/136:22 pmSBP - IAD

1 stop9h 40mUnited Airlines

Fri 10/177:22 pmIAD - SBP

1 stop7h 21mUnited Airlines

Deal found 9/11

$395

Tue 10/146:22 pmSBP - IAD

1 stop8h 14mUnited Airlines

Fri 10/177:22 pmIAD - SBP

1 stop7h 21mUnited Airlines

Deal found 9/11

$375

Tue 10/142:19 pmSBP - IAD

1 stop23h 23mAlaska Airlines

Fri 10/175:42 pmIAD - SBP

1 stop8h 42mAlaska Airlines

Deal found 9/9

$402

Tue 10/2112:27 pmSBP - IAD

1 stop7h 24mAmerican Airlines

Sat 10/256:11 amIAD - SBP

1 stop8h 26mAmerican Airlines

Deal found 9/11

$355

Tue 10/216:00 amSBP - IAD

1 stop7h 42mAlaska Airlines

Sat 10/258:53 amIAD - SBP

1 stop12h 45mAlaska Airlines

Deal found 9/10

$362

Fri 10/3112:27 pmSBP - IAD

1 stop30h 04mAmerican Airlines

Wed 11/56:04 amIAD - SBP

1 stop8h 39mAmerican Airlines

Deal found 9/11

$416

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 September 11, 2025.

Wed 10/112:24 pmSBP - IAD

1 stop7h 24mAmerican Airlines

Deal found 9/10

$178

Thu 1/13:55 pmSBP - IAD

1 stop11h 18mAlaska Airlines

Deal found 9/10

$184

Wed 12/316:00 amSBP - IAD

1 stop8h 21mAlaska Airlines

Deal found 9/10

$197

Wed 10/16:29 pmSBP - IAD

1 stop10h 04mAlaska Airlines

Deal found 9/9

$218

Sat 12/276:23 pmSBP - IAD

1 stop9h 57mUnited Airlines

Deal found 9/9

$219

Wed 9/172:12 pmSBP - IAD

1 stop23h 40mAlaska Airlines

Deal found 9/10

$231

Tue 12/306:00 amSBP - IAD

1 stop8h 21mAlaska Airlines

Deal found 9/10

$254

Sat 1/33:55 pmSBP - IAD

1 stop11h 18mAlaska Airlines

Deal found 9/10

$275

Fri 9/266:29 pmSBP - IAD

1 stop10h 04mHawaiian Airlines

Deal found 9/9

$278

Thu 1/19:57 amSBP - IAD

2 stops9h 36mAmerican Airlines

Deal found 9/10

$295

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

Thu 11/6

12:28 pm-10:32 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Tue 11/11

6:04 am-11:43 am

1 stop8h 39m

$337

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 11/1

6:00 am-4:27 pm

1 stop7h 27m

Washington, D.C. Dulles Intl

Wed 11/5

3:59 pm-9:08 pm

1 stop8h 09m

$355

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 11/1

7:56 pm-7:23 am

1 stop8h 27m

Washington, D.C. Dulles Intl

Tue 11/4

5:40 pm-11:26 pm

1 stop8h 46m

$356

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 10/21

6:00 am-4:42 pm

1 stop7h 42m

Washington, D.C. Dulles Intl

Sat 10/25

8:53 am-6:38 pm

1 stop12h 45m

$362

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Fri 10/31

8:33 am-7:26 pm

1 stop7h 53m

Washington, D.C. Dulles Intl

Wed 11/5

4:10 pm-10:05 pm

1 stop8h 55m

$362

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Sat 11/1

6:05 am-7:45 pm

2 stops10h 40m

Washington, D.C. Dulles Intl

Wed 11/5

6:04 am-3:36 pm

2 stops12h 32m

$365

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 10/14

2:19 pm-4:42 pm

1 stop23h 23m

Washington, D.C. Dulles Intl

Sat 10/18

5:42 pm-10:41 pm

1 stop7h 59m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Thu 12/25

12:36 pm-10:33 pm

1 stop6h 57m

Washington, D.C. Dulles Intl

Wed 12/31

6:05 am-11:46 am

1 stop8h 41m

$369

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 10/14

6:22 pm-5:36 am

1 stop8h 14m

Washington, D.C. Dulles Intl

Fri 10/17

7:22 pm-11:43 pm

1 stop7h 21m

$375

San Luis ObispoWashington, D.C.

SBP - IAD

SBPIAD

San Luis Obispo County

Tue 12/23

5:20 pm-5:21 pm

1 stop21h 01m

Washington, D.C. Dulles Intl

Tue 12/30

6:21 pm-11:35 pm

1 stop8h 14m

$375

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 21 results

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 $292). 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?

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

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

10,000 reviews

Reviews

1 / 20

6.0

Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

6.0

Good

Hannah,Aug 2025

SFO - SAN

United Airlines

7.4

Good

8,937 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

6.0

Good

Hannah,Aug 2025

SFO - SAN

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 7h 04m. Fly via American Airlines, United Airlines, or Hawaiian Airlines to get the fastest option. The distance between San Luis Obispo and Washington, D.C. Dulles Intl Airport is about 2370 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from San Luis Obispo to Washington, D.C. Dulles Intl Airport round-trip?
Currently priced at $278, 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 43% 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, 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 $292). 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

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from San Luis Obispo to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$278	Average$519	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$311	Average$425	FlexibilityNo cancel fee	On-time75%

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$178+ 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 10/1. 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

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Find 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 September 11, 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 September 11, 2025.

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.

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 September 11, 2025.