SBP - IAD

$304 Find Cheap Flights from San Luis Obispo to Washington Dulles Airport

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Luis Obispo to Dulles Intl departing on 2/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Luis Obispo to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Luis Obispo to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$322
Overall average: $436
Alaska Airlines
Tue 2/24Wed 3/4
SBP - IAD • 1 stop
Cheapest one-way
Multiple Airlines
Fri 12/5
SBP - IAD • multi-stop
When to travel
January
Cheapest • 22% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Luis Obispo to Dulles Intl (SBP-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Luis Obispo to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Luis Obispo to Dulles Intl

Tue, Feb 24 - Wed, Mar 4
Alaska Airlines Logo
12:19 pm - 5:27 pm
SBP
-
IAD
26h 08m1 stop
Alaska Airlines Logo
6:20 pm - 11:17 pm
IAD
-
SBP
7h 57m1 stop
$322Alaska Airlines
Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
6:17 pm - 4:26 pm
SBP
-
IAD
19h 09m1 stop
Alaska Airlines Logo
5:26 pm - 4:34 pm
IAD
-
SBP
26h 08m1 stop
$323Alaska Airlines
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
6:00 am - 5:27 pm
SBP
-
IAD
8h 27m1 stop
Alaska Airlines Logo
7:05 am - 6:53 pm
IAD
-
SBP
14h 48m1 stop
$333Alaska Airlines
Tue, Feb 24 - Wed, Mar 4
Alaska Airlines Logo
6:00 am - 5:27 pm
SBP
-
IAD
8h 27m1 stop
Alaska Airlines Logo
7:05 am - 11:17 pm
IAD
-
SBP
19h 12m2 stops
$353Alaska Airlines
Thu, Jan 22 - Thu, Jan 29
Alaska Airlines Logo
3:12 pm - 5:04 pm
SBP
-
IAD
22h 52m1 stop
Alaska Airlines Logo
6:04 pm - 5:37 pm
IAD
-
SBP
26h 33m1 stop
$363Alaska Airlines
Tue, Apr 21 - Wed, Apr 29
Alaska Airlines Logo
6:00 am - 5:23 pm
SBP
-
IAD
8h 23m1 stop
Alaska Airlines Logo
5:37 pm - 11:18 pm
IAD
-
SBP
8h 41m1 stop
$369Alaska Airlines
Thu, Jan 22 - Thu, Jan 29
Alaska Airlines Logo
5:35 pm - 4:26 pm
SBP
-
IAD
19h 51m2 stops
Alaska Airlines Logo
5:26 pm - 2:32 pm
IAD
-
SBP
24h 06m2 stops
$373Alaska Airlines
Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
5:14 pm - 4:26 pm
SBP
-
IAD
20h 12m2 stops
Alaska Airlines Logo
6:04 pm - 4:55 pm
IAD
-
SBP
25h 51m2 stops
$375Alaska Airlines
Thu, Jan 15 - Mon, Jan 19
Alaska Airlines Logo
3:12 pm - 5:04 pm
SBP
-
IAD
22h 52m1 stop
Alaska Airlines Logo
5:26 pm - 11:20 pm
IAD
-
SBP
8h 54m1 stop
$392Alaska Airlines
Thu, Jan 15 - Sun, Jan 18
Alaska Airlines Logo
3:12 pm - 5:04 pm
SBP
-
IAD
22h 52m1 stop
Alaska Airlines Logo
5:26 pm - 11:20 pm
IAD
-
SBP
8h 54m1 stop
$394Alaska Airlines
Booking Insights

KAYAK's insights & trends for San Luis Obispo to Dulles Intl flights

Get data-powered insights and trends into flights from San Luis Obispo to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Luis Obispo to Washington Dulles Airport?

The average price of all round-trip flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

When flying from San Luis Obispo to Washington Dulles Airport, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to San Luis Obispo, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Luis Obispo to Washington, D.C. Dulles Intl Airport is January, where tickets cost $396 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $723 and $692 respectively.

Good to know

Low seasonSeptember
Cheapest flight$322
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 41% increase in price.
Flight from San Luis Obispo to Washington Dulles Airport

When to book flights from San Luis Obispo to Dulles Intl

Are your dates flexible? Find out the best times to travel from San Luis Obispo to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Luis Obispo to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from San Luis Obispo to Washington, D.C. Dulles Intl Airport was $322 for a round-trip ticket.

  • Do I need a passport to fly between San Luis Obispo and Washington Dulles Airport?

    A passport is not required to fly from San Luis Obispo to Washington Dulles Airport.

  • Which airports will I be using when flying from San Luis Obispo to Washington Dulles Airport?

    San Luis Obispo and Washington Dulles Airport are both served by 1 main airport. You will leave San Luis Obispo from San Luis Obispo County and will be arriving at Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from San Luis Obispo to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Luis Obispo to Washington Dulles Airport?

    oneworld, and Star Alliance are the airline alliances operating flights between San Luis Obispo and Washington Dulles Airport, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Luis Obispo to Washington, D.C., Alaska Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Luis Obispo to Washington, D.C. are Alaska Airlines and United Airlines. With an average price for the route of $425 and an overall rating of 8.0, Alaska Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $532 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Luis Obispo to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Luis Obispo to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Luis Obispo to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from San Luis Obispo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Luis Obispo to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to San Luis Obispo with another airline. Booking your flights between San Luis Obispo and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Luis Obispo to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from San Luis Obispo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San Luis Obispo to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from San Luis Obispo to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Luis Obispo to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11402 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.1Food
7.0Entertainment
Airline reviews

They were so kind to us! The entire staff were so good to us when we had our service dog join our trip and we couldn't be more grateful!

10.0 ExcellentAnonymous, Dec 2025
LAX - EWR
Read more Alaska Airlines reviews

They were so kind to us! The entire staff were so good to us when we had our service dog join our trip and we couldn't be more grateful!

Larger seats and more room would elevate the experience. Otherwise, it was good!

Flight crew and flight were good. But it departed two hours late.

They changed our flight from a one stop 3 hour layover to a non-stop. Saved us hours and got us there sooner.

The ground crew did not supply drink or snacks during the layover in SFO. So there weren't many options. Otherwise, it was all great.

No accommodation or credit offered for cancelled layover flight to Eugene from portland

I love a red eye flight. No lines to wait in. Lots of turbulence on the flight and a very shaky landing.

I truly appreciated the kindness and attentiveness of the staff and flight attendants. They did their best to be prompt with departure times to San Diego and back to New York! Alaska Airlines ... you are awesome!!

Flight from PSP delayed ~2hs and missed connection. Terrible service providing acommodations & food (no rides - just the hotel van every 30 min, which you have to call). 12 dollars in food for a 9 hour delay. 30+ minutes to get everything sorted out.

Again Alaskan and Hawaiian need to consolidate check-in, allow seat reservations on both flights. I wound up in last row because I couldn’t reserve better seat.

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Great crew, excellent landing, good food. Over all great experience. Thank you!

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

Everything you need to know for your flight from San Luis Obispo to Dulles Intl

Information on your arrival and departure airports