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

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The best prices from Ontario to Washington Dulles Intl are usually found in September or October, booked 41 days in advance, depart on a Friday or Wednesday and return on a Wednesday

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

ONT - IAD
Price
$198 - $452
IAD
Temperature
46.4 - 87.8 °F
IAD
Rainfall
2.5 - 4.4 inches
Popular in June High demand for flights, 27% potential price rise
Cheapest in September Best time to find cheap flights, 40% potential price drop
Round-trip from $198 From Ontario to Washington Dulles Intl
One-way from $139 One-way flight from Ontario to Washington Dulles Intl
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Ontario to Washington Dulles Intl?

Thursday is generally a great day to depart. Flying on this day could help you save up to 114%.

How far in advance should I book a flight from Ontario to Washington Dulles Intl?

Find a great deal and save up to 11% by booking at least 28 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Washington Dulles Intl within the next two weeks, with the cheapest ticket starting at $252.

What is the cheapest month to fly from Ontario to Washington Dulles Intl?

Our data shows that February tends to be the cheapest month to fly to Washington Dulles Intl from Ontario. Users have commonly found prices around $243 for the month, but tickets can be as low as $119. Due to multiple factors, prepare for potentially higher prices in December.

When is the cheapest time to fly from Ontario to Washington Dulles Intl (ONT - IAD)?

One of the essential ways to save on airfare from Ontario to Washington Dulles Intl is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. If a flight is in the afternoon is possible it can save you up to 50% on airfare.

Cheap flights from Ontario to Washington Dulles Intl in August, September 2020

The best prices found for ONT to IAD flights for August, September
15 Aug - 22 Aug
$198pp
ONT
Ontario
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
   
2 STOPS
ONT
Ontario
6 Aug - 12 Aug
$200pp
ONT
Ontario
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
 
1 STOP
ONT
Ontario
15 Aug - 22 Aug
$218pp
ONT
Ontario
Delta
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ONT
Ontario

Ontario to Washington Dulles Intl 2020 flight deals

Cheap flights to Washington Dulles Intl from Ontario found for this year
15 Aug - 22 Aug
$198pp
ONT
Ontario
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
   
2 STOPS
ONT
Ontario
6 Aug - 13 Aug
$200pp
ONT
Ontario
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ONT
Ontario
15 Aug - 29 Aug
$218pp
ONT
Ontario
Delta
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ONT
Ontario

Last minute flights from Ontario to Washington Dulles Intl

Late deals on round-trip flights to Washington Dulles Intl from Ontario, departing today and this week
28 Jul - 3 Aug
$317pp
ONT
Ontario
Delta
   
2 STOPS
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ONT
Ontario
25 Jul - 2 Aug
$341pp
ONT
Ontario
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
 
1 STOP
ONT
Ontario
26 Jul - 9 Aug
$371pp
ONT
Ontario
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ONT
Ontario

One-way flights to Washington Dulles Intl from Ontario

The cheapest one-way flights from Ontario to Washington Dulles Intl
1:41 am - 11:21 am
Spirit Airlines
1 Stop
6h 40m
ONT - IAD
Spirit Airlines
$139
Ovago
4:00 am - 5:53 pm
Cape Air
2 Stops
10h 53m
ONT - IAD
Cape Air
$223
Ovago
6:15 am - 6:00 pm
Delta
2 Stops
8h 45m
ONT - IAD
Delta
$849
Delta

Related info for your journey

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

Flight FAQs

From Ontario to Washington Dulles Intl

Are flight prices decreasing from Ontario to Washington Dulles Intl due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Ontario and Washington Dulles Intl for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Ontario to Washington Dulles Intl for under $200 on Cheapflights?

Yes, there are multiple flights from Ontario to Washington Dulles Intl for under $200. The cheapest flight booked recently is on Multiple Airlines for just $198, but on average you can expect to pay $242.

Are there nonstop flights from Ontario to Washington Dulles Intl for under $200 on Cheapflights?

There are no nonstop flights from Ontario to Washington Dulles Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Ontario to Washington Dulles Intl for under $400?

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

Does it rain more in Ontario or Washington Dulles Intl?

The rainfall in Ontario is generally more than the rainfall in Washington Dulles Intl. This will continue over the next 1 days.

Is Ontario weather warmer or cooler than Washington Dulles Intl?

We forecast the temperature to be around the 95 °F's in July, on average. The temperature in Washington Dulles Intl is generally colder than in Ontario. Book flights in a timely manner in correlation to your departure date.

How long is the flight from Ontario to Washington Dulles Intl?

Delta can get you from Ontario to Washington Dulles Intl in just under 6h 11m. Your travel time can differ by up to .

What is the cheapest airline to fly from Ontario to Washington Dulles Intl round-trip?

Currently priced at $218, Delta will fly you from Ontario to Washington Dulles Intl and back. In addition to Delta, many other airlines offer competitively priced options for your trip. This flight start at 33% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Ontario to Washington Dulles Intl one-way?

The cheapest airlines for a one-way flight from Ontario to Washington Dulles Intl are Delta ($109), Spirit Airlines ($139), and Cape Air ($223).

Alternative routes for Ontario to Washington Dulles Intl

Destination information for Washington Dulles Intl

Things to know before you go. Useful info for your trip from Ontario to Washington Dulles Intl
Average temperature for August in Washington Dulles Intl
87.8 °F
Avg rainfall for August in Washington Dulles Intl
3.4 ″

Airports servicing Ontario

Airports servicing Washington