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

$89 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $128 and $133, respectively.

Weekly flight availability from Riverside to Washington, D.C. Dulles Intl Airport

The most flights from R1V to IAD are scheduled on a Tuesday (31 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

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 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 $1,400, our data indicates the cheapest price to be $168. The most popular route (Los Angeles - Washington, D.C. Dulles Intl), is priced around $270.

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

Consider Sun Country Air (100%), Egyptair (91%) or American Airlines (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 most popular airlines that fly from Riverside to Washington, D.C. Dulles Intl Airport?

United Airlines, American Airlines and Frontier are the most popular airlines when flying from Riverside to Washington, D.C. Dulles Intl Airport.

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.

Find Cheap Flights from Riverside to Washington, D.C. Dulles Intl Airport

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Cheapflights Tip: The best prices from Riverside to Washington, D.C. Dulles Intl are usually found in January or September, booked 69 days in advance, depart on a Thursday or Wednesday and return on a Thursday

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Popular in	June
Cheapest in	January
Average price	$414

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Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Cheapflights Insights

Everything you need to know about your flight from Riverside to Washington, D.C. Dulles Intl Airport

Prices

Airlines

What is the cheapest time of day to fly from R1V to IAD?

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 35% on the cost of your flight, compared to a flight in the morning.

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

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

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Riverside to Washington, D.C. Dulles Intl Airport, such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,207 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Southwest

7.9

Good

4,207 reviews

Southwest

7.9

Good

4,207 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

United Airlines

7.3

Good

10,391 reviews

Southwest

7.9

Good

4,207 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

JetBlue

7.1

Good

3,060 reviews

Southwest

7.9

Good

4,207 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

American Airlines

7.0

Good

12,178 reviews

Southwest

7.9

Good

4,207 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

Frontier

5.5

Fair

2,521 reviews

Southwest

7.9

Good

4,207 reviews

Reviews

1 / 20

8.0

Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

Related info for your journey

What are the cheapest airlines to fly from Riverside to Washington, D.C. Dulles Intl Airport one-way?
$89 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $128 and $133, respectively.
What are the most reliable airlines from Riverside to Washington, D.C. Dulles Intl Airport?
Consider Sun Country Air (100%), Egyptair (91%) or American Airlines (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 $1,400, our data indicates the cheapest price to be $168. The most popular route (Los Angeles - Washington, D.C. Dulles Intl), is priced around $270.
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.

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Top 7 airlines flying from Riverside to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$170	Average$370	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$246	Average$542	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$256	Average$505	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$257	Average$487	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$282	Average$501	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$297	Average$522	FlexibilityNo cancel fee	On-time75%
JetBlue	Cheapest$362	Average$425	FlexibilityNo cancel fee	On-time62%

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Cheap flights from Riverside, CA to Dulles Intl (IAD)

Find cheap flights from Riverside to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Riverside to Dulles Intl

Most accurate provider

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Popular in

Cheapest in

Average price

Cheapflights Insights

What is the cheapest time of day to fly from R1V to IAD?

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 35% on the cost of your flight, compared to a flight in the morning.

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

Weekly flight availability from Riverside to Washington, D.C. Dulles Intl Airport

The most flights from R1V to IAD are scheduled on a Tuesday (31 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Riverside to Washington, D.C. Dulles Intl Airport, such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 21, 2026.

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