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$190 Cheap Flights from Washington (IAD) to San Luis Obispo (SBP)

View $190 flight on Wed, Jan 6, 2027Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to San Luis Obispo County Regional Airport (SBP)

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

Prices were available within the past 7 days and start at $190 for one-way flights and $379 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
SBP
San Luis Obispo
$379 Roundtrip, found 16 hours ago
$379
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 4 from Washington to San Luis Obispo, returning Tue, Nov 10, priced at $379 found 16 hours ago
United
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
SBP
San Luis Obispo
$384 Roundtrip, found 16 hours ago
$384
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 4 from Washington to San Luis Obispo, returning Tue, Nov 10, priced at $384 found 16 hours ago
Alaska Airlines
Thu, Nov 19 - Wed, Dec 2
IAD
Washington
SBP
San Luis Obispo
$390 Roundtrip, found 2 days ago
$390
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Nov 19 from Washington to San Luis Obispo, returning Wed, Dec 2, priced at $390 found 2 days ago
Alaska Airlines
Tue, Jan 5 - Mon, Jan 11
IAD
Washington
SBP
San Luis Obispo
$399 Roundtrip, found 9 hours ago
$399
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Jan 5 from Washington to San Luis Obispo, returning Mon, Jan 11, priced at $399 found 9 hours ago
United
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
SBP
San Luis Obispo
$399 Roundtrip, found 16 hours ago
$399
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 4 from Washington to San Luis Obispo, returning Tue, Nov 10, priced at $399 found 16 hours ago
United
Fri, Nov 6 - Sun, Dec 20
IAD
Washington
SBP
San Luis Obispo
$400 Roundtrip, found 2 days ago
$400
Roundtrip
found 2 days ago
Select United flight, departing Fri, Nov 6 from Washington to San Luis Obispo, returning Sun, Dec 20, priced at $400 found 2 days ago
United
Wed, Jun 2 - Wed, Jun 9
IAD
Washington
SBP
San Luis Obispo
$401 Roundtrip, found 16 hours ago
$401
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Jun 2 from Washington to San Luis Obispo, returning Wed, Jun 9, priced at $401 found 16 hours ago
United
Wed, Nov 4 - Tue, Nov 10
IAD
Washington
SBP
San Luis Obispo
$405 Roundtrip, found 16 hours ago
$405
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 4 from Washington to San Luis Obispo, returning Tue, Nov 10, priced at $405 found 16 hours ago
American Airlines
Wed, Oct 14 - Wed, Oct 21
IAD
Washington
SBP
San Luis Obispo
$411 Roundtrip, found 5 days ago
$411
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Oct 14 from Washington to San Luis Obispo, returning Wed, Oct 21, priced at $411 found 5 days ago
United
Tue, Oct 13 - Sat, Oct 17
IAD
Washington
SBP
San Luis Obispo
$419 Roundtrip, found 11 hours ago
$419
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Oct 13 from Washington to San Luis Obispo, returning Sat, Oct 17, priced at $419 found 11 hours ago

Alternative airports near San Luis Obispo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Luis Obispo County Regional SBP. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $648
SBP
San Luis Obispo County Regional
CheapestClosest
Average driving time to city center6 min
Flights from $648

What you need to know for your flight from Washington Dulles Intl. to San Luis Obispo County Regional

Washington (IAD) to San Luis Obispo (SBP) at a glance

Travel with a range of airlines offering flights from Washington Dulles International Airport (IAD) to San Luis Obispo County Regional Airport (SBP) on this long domestic route. Compare choices from full-service airlines to find the best itinerary that suits your budget, schedule, and travel needs as you discover the iconic attractions and neighborhoods of San Luis Obispo. Here, you’ll find essential information regarding flights between these two destinations.

  • Fastest flight duration: around 7 hours in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 2,400 miles (3,860 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $155–$505, depending on seasonality and how far ahead you book

Flights from Washington Dulles International Airport (IAD) to San Luis Obispo County Regional Airport (SBP)

According to recent traveler bookings, here are the top airlines preferred for flights from Washington to San Luis Obispo, mainly featuring one-stop services. Common layover points include Dallas-Fort Worth International Airport (DFW) with an approximate 1 hour and 15 minutes layover, San Francisco International Airport (SFO) also with about 1 hour and 15 minutes, and San Diego International Airport (SAN), which offers a similar layover duration. This variety allows you to balance price, total travel time, and cabin class to find your ideal itinerary.

  • United: As a comprehensive airline, United provides convenient one-stop service, with one-way ticket prices generally between $160 and $565. It represents around 55% of the flights on this route, featuring an in-flight duration of 7 hours and a total travel time of about 8 hours and 15 minutes, including the layover.
  • American Airlines: This full-service airline also offers one-stop itineraries, with one-way fares typically ranging from $160 to $625. It covers roughly 26% of departures on this route, with a flight time of 7 hours and an overall journey time of approximately 8 hours and 15 minutes, factoring in a layover.
  • Alaska Airlines: Known for its full-service options, Alaska Airlines presents one-stop flights with one-way fares usually ranging from $155 to $340. This airline accounts for about 19% of the departures on this route, with an in-flight duration of 7 hours and an estimated total travel time of around 8 hours and 15 minutes, including layover time.

Best time to fly from Washington (IAD) to San Luis Obispo (SBP)

The most popular months for travelers flying from Washington to San Luis Obispo are February, April, and July, when peak temperatures in San Luis Obispo reach up to 68.7°F in July. If you prefer quieter travel, consider January, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 52.7°F. For better deals, May usually offers the lowest average one-way fare around $236. Flight availability peaks in October, with approximately 9 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $236, roughly 24% cheaper than the yearly average.
  • Another budget-friendly time to fly: August typically offers an average one-way fare of around $267.
  • Most flight options: October has the highest number of flights from Washington to San Luis Obispo, with approximately 9 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January52.7°F (11.5°C)Low7$316
February52.9°F (11.6°C)High8$291
March54.5°F (12.5°C)Average7$328
April57.7°F (14.3°C)High8$313
May60.8°F (16.0°C)Average8$236
June65.5°F (18.6°C)Average7$290
July68.7°F (20.4°C)High7$282
August69.4°F (20.8°C)Average7$267
September69.1°F (20.6°C)Low7$443
October64.6°F (18.1°C)Average9$281
November57.6°F (14.2°C)Low7$339
December52.2°F (11.2°C)Average7$344

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Washington (IAD) to San Luis Obispo (SBP)

  • Washington to San Luis Obispo (DCA-SBP): Ronald Reagan Washington National Airport (DCA) lies approximately 23 miles from Washington Dulles International Airport (IAD). One-way economy ticket prices on this route generally vary between $170 and $505, influenced by the time of year and advance booking. Flights on this route often require one stop, with common layover locations including Sky Harbor International Airport (PHX) and San Diego International Airport (SAN). Leading airlines for this journey feature American Airlines and United. Additionally, both business and first class services are offered on this route.
  • Washington to Santa Barbara (IAD-SBA): Santa Barbara Municipal Airport (SBA) is located nearly 72 miles from San Luis Obispo County Regional Airport (SBP). The typical range for one-way economy fares on this route is between $160 and $470, depending on the season and how far in advance you book. This route is generally serviced by flights that include one stop, with popular layover points at Denver International Airport (DEN) and San Francisco International Airport (SFO). United and Delta are among the most booked airlines for this route. First class service is also available on this journey.

How to find the best prices for flights from Washington (IAD) to San Luis Obispo (SBP)

Getting some of the best deals on flights from Washington to San Luis Obispo is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Evening departures (6 PM-12 AM) tend to offer lower prices, while morning flights (5 AM-12 PM) are the most popular. Additionally, flying on Saturday generally provides cheaper rates, although Thursday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find San Luis Obispo hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Luis Obispo County Regional Airport from Washington Dulles International Airport

San Luis Obispo welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Here's how to reach San Luis Obispo efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Luis Obispo, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from San Luis Obispo County Regional Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Luis Obispo County Regional Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Luis Obispo County Regional Airport, San Luis Obispo Seaport, a seaport, is located about 0.1 miles away on foot, while San Luis Obispo Station, a train station, is approximately 3.8 miles away by car. For those needing bus services, the Cal Poly San Luis Obispo Bus Stop, a bus station, is situated about 5.6 miles away by car, offering convenient access to various transportation options.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) cost?
You can find cheap one-way flights from $190 and cheap return flights from $379 Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) with Expedia. One-way flights typically cost between $274 and $1428, and return flights often range between $516 and $1709. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
The cheapest month to fly from IAD to SBP is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
Enter IAD to SBP and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
American Airlines is one of the cheapest airlines offering connecting flights from Washington, DC (IAD) to San Luis Obispo, CA (SBP), with round-trip tickets starting from around $374.19 with a layover in Charlotte-Douglas Intl. (CLT). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
You can find the earliest flight from Washington, DC (Washington Dulles International) to San Luis Obispo, CA (San Luis Obispo County Regional) at around 5:00 AM, operated by American Airlines. This early departure allows you to maximize your time in San Luis Obispo. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
The most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) are in the early morning, from 6am to 9am. About 36% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Airlines, offer flights during this window. This timing is favored because it allows travelers to maximize their day upon arrival.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
A flight from IAD to SBP with a layover takes around 8 hours 20 minutes, with the route covering approximately 2,372 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
Select the "Business class" and "First class" filters when looking for IAD to SBP flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Luis Obispo from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into San Luis Obispo County Regional (SBP) to reach San Luis Obispo. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Seattle - Tacoma Intl. (SEA), Detroit Metropolitan Wayne County (DTW) before reaching San Luis Obispo. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) San Luis Obispo Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to San Luis Obispo, CA (SBP-San Luis Obispo County Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
San Luis Obispo County Regional
Airlines serving
Alaska Airlines, American Airlines, United
Roundtrip price
$378
Distance
2371 mi

Book with confidence

Washington to San Luis Obispo Flights

The cheapest times to fly from Washington to San Luis Obispo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to San Luis Obispo are during the month of November. You can find some of the cheapest flights from Washington to San Luis Obispo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to San Luis Obispo

Sunday is one of the best days to book for cheap flights from Washington to San Luis Obispo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to San Luis Obispo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to San Luis Obispo in 2026. You can also book with separate airlines for your outbound and return journeys, from $190 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to San Luis Obispo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to San Luis Obispo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to San Luis Obispo Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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