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Dulles Intl

$141+ Cheap flights from Riverside, CA 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — IAD
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Riverside to Washington, D.C. Dulles Intl are usually found in May or July, booked 81 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Riverside to Dulles Intl

Cheapest flights from Riverside to Dulles Intl
Explore the most affordable flight options available from Riverside to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:45 pmLAX - IAD
1 stop9h 53mFrontier
Wed 1/76:00 amIAD - LAX
1 stop11h 19mFrontier
Deal found 12/16$254
This Kiwi.com deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:45 pmLAX - IAD
1 stop9h 53mFrontier
Sun 1/118:35 amIAD - LAX
2 stops34h 19mFrontier
Deal found 12/14$273
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:45 pmLAX - IAD
1 stop9h 53mFrontier
Wed 1/76:00 amIAD - LAX
1 stop11h 19mFrontier
Deal found 12/16$274
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:45 pmLAX - IAD
1 stop9h 53mFrontier
Sat 1/106:00 amIAD - LAX
1 stop10h 05mFrontier
Deal found 12/16$284
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:45 pmLAX - IAD
1 stop9h 53mFrontier
Fri 1/96:00 amIAD - LAX
1 stop11h 05mFrontier
Deal found 12/16$288
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:59 pmLAX - IAD
1 stop18h 04mFrontier
Mon 1/56:05 amIAD - LAX
1 stop10h 58mFrontier
Deal found 12/15$291
This Frontier deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:45 pmLAX - IAD
1 stop9h 53mFrontier
Tue 1/66:00 amIAD - LAX
1 stop11h 19mFrontier
Deal found 12/15$295
This Expedia deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:45 pmLAX - IAD
1 stop9h 53mFrontier
Wed 1/76:00 amIAD - LAX
1 stop11h 19mFrontier
Deal found 12/17$303
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:45 pmLAX - IAD
1 stop9h 53mFrontier
Sat 1/106:00 amIAD - LAX
1 stop10h 05mFrontier
Deal found 12/16$304
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:45 pmLAX - IAD
1 stop9h 53mFrontier
Mon 1/57:06 pmIAD - LAX
2 stops27h 15mFrontier
Deal found 12/15$305
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:45 pmLAX - IAD
1 stop9h 53mFrontier
Fri 1/96:00 amIAD - LAX
1 stop11h 05mFrontier
Deal found 12/16$308

Find flight deals from Riverside to Dulles Intl

Keep the following information in mind while searching for Riverside to Dulles Intl flight deals. Data was last updated December 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$257
(Southwest)

One-way from

$141
(Southwest)

Popular in

December

Cheapest in

May

Average price

$489
Provider with most accurate pricing for Los Angeles-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Washington, D.C. (WAS) flights.
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From Riverside to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Riverside to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($64 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from Riverside to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Riverside

Fly to

Dulles Intl

Route

Depart

Return

Price

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Wed 3/4

5:45 am-4:50 pm

1 stop8h 05m

Washington, D.C. Dulles Intl

Tue 3/10

4:45 pm-9:15 pm

1 stop7h 30m

$257

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Fri 1/23

8:40 am-4:22 pm

Nonstop4h 42m

Washington, D.C. Dulles Intl

Sun 1/25

8:25 am-11:25 am

Nonstop6h 00m

$257

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Fri 1/9

9:30 pm-5:24 am

Nonstop4h 54m

Washington, D.C. Dulles Intl

Mon 1/12

10:05 pm-12:59 am

Nonstop5h 54m

$257

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Wed 1/14

7:50 am-9:55 pm

2 stops11h 05m

Washington, D.C. Dulles Intl

Sat 1/17

7:00 am-2:00 pm

1 stop10h 00m

$262

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Fri 2/20

7:55 am-6:20 pm

1 stop7h 25m

Washington, D.C. Dulles Intl

Wed 2/25

9:05 am-2:40 pm

1 stop8h 35m

$277

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Sat 2/14

10:00 am-9:45 pm

1 stop8h 45m

Washington, D.C. Dulles Intl

Mon 2/16

5:10 am-11:25 am

2 stops9h 15m

$282

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Tue 1/27

11:25 pm-7:14 am

Nonstop4h 49m

Washington, D.C. Dulles Intl

Wed 1/28

3:19 pm-6:05 pm

Nonstop5h 46m

$297

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Thu 1/29

12:40 pm-8:35 pm

Nonstop4h 55m

Washington, D.C. Dulles Intl

Fri 1/30

8:25 am-11:25 am

Nonstop6h 00m

$297

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Fri 2/6

7:35 am-5:00 pm

1 stop6h 25m

Washington, D.C. Dulles Intl

Sun 2/8

9:05 am-2:40 pm

1 stop8h 35m

$297

Los AngelesWashington, D.C.

LAX - IAD

LAXIAD

Los Angeles

Tue 1/20

8:50 am-9:55 pm

1 stop10h 05m

Washington, D.C. Dulles Intl

Tue 1/27

9:05 am-4:15 pm

2 stops10h 10m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 21 results
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Best time to book a flight from Riverside to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Riverside 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 Riverside to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Riverside to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Dulles Intl. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Riverside to Washington, D.C. Dulles Intl Airport, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, June is the cheapest month in which you can book a flight from Riverside to Washington, D.C. Dulles Intl Airport (average of $142). Flying from Riverside to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of $267). 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 R1V to IAD?

Find hourly flight availability from Riverside to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 17, 2025.

It’s optimal to fly from Riverside to Washington, D.C. Dulles Intl Airport in the afternoon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Riverside to Dulles Intl. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their Riverside to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated December 17, 2025.
Read through reviews of airlines operating flights from Riverside to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines, Southwest, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,470 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

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
11,470 reviews
Alaska Airlines
8.0
Very good
11,470 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

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.
Southwest
7.9
Good
4,250 reviews
Alaska Airlines
8.0
Very good
11,470 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

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.
Hawaiian Airlines
7.8
Good
2,819 reviews
Alaska Airlines
8.0
Very good
11,470 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

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.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,470 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

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.
Frontier
5.8
Fair
3,082 reviews
Alaska Airlines
8.0
Very good
11,470 reviews

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

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.

Related info for your journey

Find useful and relevant information for your journey from Riverside to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Riverside to Washington, D.C. Dulles Intl Airport?

    Airlines like Southwest and United Airlines fly from Riverside to Washington, D.C. Dulles Intl Airport in about 4h 42m. The time it takes to get you to your destination can typically vary by up to 3h 23m. Airlines will cover a distance of 2282 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Riverside to Washington, D.C. Dulles Intl Airport one-way?

    $48 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and Southwest, with prices starting from $71 and $99, respectively.

  • What are the most reliable airlines from Riverside to Washington, D.C. Dulles Intl Airport?

    Consider Asiana Airlines (93%), Egyptair (92%) or Ethiopian Air (90%) when booking your flight. These represent the most reliable airlines when flying from Riverside to Washington, D.C. Dulles Intl Airport.

  • What are the cheapest flights from Riverside to Washington, D.C. Dulles Intl Airport?

    Looking for the cheapest flight from Riverside to Washington, D.C. Dulles Intl Airport? While on average our users pay $1,061, our data indicates the cheapest price to be $144. The most popular route (Los Angeles - Washington, D.C. Dulles Intl), is priced around $169.

  • Can I find deals for flights from Riverside to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Riverside to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Dulles Intl.

  • Can I find deals for business class flights from Riverside to Dulles Intl?

    Yes. Cheapflights offers flight deals from Riverside 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 Riverside to Washington, D.C. Dulles Intl Airport?

    Currently, June is the cheapest month in which you can book a flight from Riverside to Washington, D.C. Dulles Intl Airport (average of $142). Flying from Riverside to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of $267). 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

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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Alternative routes for Riverside to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Riverside to Dulles Intl

Discover the top 8 airlines that operate flights from Riverside to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$72Average$233FlexibilityNo cancel feeOn-time65%
FrontierCheapest$127Average$278FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$138Average$326FlexibilityNo cancel feeOn-time85%
DeltaCheapest$168Average$429FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$227Average$370FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$227Average$456FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$246Average$411FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$278Average$439FlexibilityNo cancel feeOn-time71%

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