Cheap flights from Dulles Intl (IAD) to Ontario (ONT)

IAD — ONT
Jan 31 — Feb 71

How to find the cheapest flight from Dulles Intl (IAD) to Ontario (ONT)

All the information you need to plan the best IAD to ONT flight in 2023: compare Dulles Intl to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

IAD - ONT

Price

$381 - $755

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Popular inMayHigh demand for flights, 26% potential price rise
Cheapest inSeptemberBest time to find cheap flights, 32% potential price drop
Round-trip from$381From Washington, D.C. Dulles Intl to Ontario
One-way from$174One-way flight from Washington, D.C. Dulles Intl to Ontario

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Ontario?

To save on the cost of your flight from Washington, D.C. Dulles Intl Airport to Ontario, book at least 54 days before your planned departure. Booking around this time can save you about 33% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $484 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $612.

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

February can be a great time to fly to Ontario from Washington, D.C. Dulles Intl Airport with a flight ticket averaging about $433. Cheapflights users have found deals in the month of February for as cheap as $175. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Ontario (IAD - ONT)?

When flying from Washington, D.C. Dulles Intl Airport to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from Dulles Intl to Ontario in January, February 2023

The best prices found for IAD to ONT flights for January, February
Feb 22 - Mar 1
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 56m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 02m
$214

American Airlines

Pick Dates

Deal found 1/23

Feb 15 - Feb 22
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 52m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 00m
$215

American Airlines

Pick Dates

Deal found 1/23

Feb 11 - Feb 18
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 12m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

6h 50m
$217

American Airlines

Pick Dates

Deal found 1/25

Dulles Intl to Ontario 2023 flight deals

Cheap flights to Ontario from Dulles Intl found for this year
Feb 22 - Mar 1
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 56m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 02m
$214

American Airlines

Pick Dates

Deal found 1/23

Feb 15 - Feb 22
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 52m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 00m
$215

American Airlines

Pick Dates

Deal found 1/23

Feb 11 - Feb 18
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 12m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

6h 50m
$217

American Airlines

Pick Dates

Deal found 1/25

Cheap United Airlines flights from Dulles Intl to Ontario

Feb 15 - Feb 22
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 19m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

6h 54m
$267

United Airlines

Pick Dates

Deal found 1/24

Feb 18 - Feb 22
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 19m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

2 stops

15h 28m
$286

United Airlines

Pick Dates

Deal found 1/24

Feb 4 - Feb 11
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

15h 24m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

7h 41m
$346

United Airlines

Pick Dates

Deal found 1/26

Cheap American Airlines flights from Dulles Intl to Ontario

Feb 22 - Mar 1
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 56m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 02m
$214

American Airlines

Pick Dates

Deal found 1/23

Feb 15 - Feb 22
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 52m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 00m
$215

American Airlines

Pick Dates

Deal found 1/23

Feb 11 - Feb 18
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 12m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

6h 50m
$217

American Airlines

Pick Dates

Deal found 1/25

Last minute flights from Dulles Intl to Ontario

Late deals on return flights to Ontario from Dulles Intl, departing today and this week
Feb 4 - Feb 11
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

15h 24m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

7h 41m
$346

United Airlines

Pick Dates

Deal found 1/26

Feb 3 - Feb 8
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

10h 54m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 00m
$365

Multiple Airlines

Pick Dates

Deal found 1/25

Feb 3 - Feb 11
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

10h 54m
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

6h 50m
$366

Multiple Airlines

Pick Dates

Deal found 1/23

One-way flights to Ontario from Dulles Intl

The cheapest one-way flights from Dulles Intl to Ontario
Feb 3
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

25h 21m
$87

Multiple Airlines

Pick Dates

Deal found 1/23

Feb 3
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

25h 21m
$88

Multiple Airlines

Pick Dates

Deal found 1/24

Feb 2
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

20h 16m
$91

Multiple Airlines

Pick Dates

Deal found 1/25

Reviews of Airlines Servicing Ontario

Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Good, comfortable seat. Temperature was rather chilly for my taste but understand that it is best for all passengers. 😊

Alaska Airlines
8.0
Very good
1,360 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Good, comfortable seat. Temperature was rather chilly for my taste but understand that it is best for all passengers. 😊

Delta
7.9
Good
1,998 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Good, comfortable seat. Temperature was rather chilly for my taste but understand that it is best for all passengers. 😊

United Airlines
7.6
Good
1,147 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Good, comfortable seat. Temperature was rather chilly for my taste but understand that it is best for all passengers. 😊

American Airlines
7.4
Good
1,666 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Good, comfortable seat. Temperature was rather chilly for my taste but understand that it is best for all passengers. 😊

Related info for your journey

Useful info, stats and facts about Dulles Intl to Ontario flights.

What airport do you fly into for flights to Ontario from Washington, D.C. Dulles Intl?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Ontario. 5 airlines have flights to Ontario from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Ontario should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

Which airlines flying from Washington, D.C. Dulles Intl to Ontario have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, American Airlines, and Delta flying from Washington, D.C. Dulles Intl to Ontario have implemented new flexible cancellation policies.

Can I find flights from Washington, D.C. Dulles Intl Airport to Ontario for under $300 on Cheapflights?

Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Ontario for under $300. The cheapest flight booked recently is on American Airlines for just $214, but on average you can expect to pay $236.

Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Ontario for under $400?

There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Ontario within the next 7 days for less than $400.

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

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Ontario is American Airlines. Our recent data shows that you can find tickets from as low as $214 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $259 and $267 round-trip. American Airlines is priced at 61% lower than the current average price of a flight leaving 3 months from now.

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

The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $107. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Ontario for a low price.

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Ontario?

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

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

On average you can expect to pay $788 for a flight from Washington, D.C. Dulles Intl Airport to Ontario. The cheapest flight overall is $191 while the most popular route, (Washington, D.C. Dulles Intl - Ontario) is currently priced at $214.

Alternative routes for Dulles Intl to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Dulles Intl to Ontario

The chart below displays the airlines Cheapflights users traveling from Dulles Intl to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapest$264Average$543FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapest$272Average$497FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$317Average$536FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
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