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Cheap flights from Ontario to Washington, D.C. Dulles Intl Airport from $116

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Washington, D.C. Dulles Intl Airport departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to Washington, D.C.

Cheap round-trip flights

These are some of the best round-trip flight deals from Ontario to Washington, D.C. that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Ontario to Washington, D.C..

Cheap last minute flights

Planning a quick getaway from Ontario to Washington, D.C.? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Washington, D.C., so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Ontario to Washington, D.C.

Find recent round-trip train or bus tickets from Ontario to Washington, D.C..

All round-trip flight deals to Washington, D.C.

The cheapest plane tickets to Washington, D.C. found on KAYAK recently.
7:45 am - 4:56 pmONT-IAD
30h 11m2 stops
7:19 pm - 11:44 pmIAD-ONT
31h 25m2 stops
$233Frontier
Find Deal
Wed, Dec 4 - Fri, Dec 6
5:05 am - 3:38 pmONT-IAD
7h 33m1 stop
4:10 pm - 11:58 pmIAD-ONT
10h 48m1 stop
$326United Airlines
Find Deal
Thu, Dec 5 - Mon, Dec 9
1:21 pm - 11:36 pmONT-IAD
7h 15m1 stop
3:05 pm - 11:53 pmIAD-ONT
11h 48m2 stops
$331Delta
Find Deal
Sat, Jan 11 - Tue, Jan 28
1:18 pm - 11:49 pmONT-IAD
7h 31m1 stop
7:00 am - 12:11 pmIAD-ONT
8h 11m1 stop
$336Delta
Find Deal
Sun, Nov 24 - Tue, Nov 26
6:10 am - 7:35 pmONT-IAD
10h 25m2 stops
9:11 am - 6:37 pmIAD-ONT
12h 26m2 stops
$346American Airlines
Find Deal
Sat, Jan 11 - Tue, Jan 28
6:00 am - 5:57 pmONT-IAD
8h 57m1 stop
6:57 pm - 10:38 amIAD-ONT
18h 41m1 stop
$354Alaska Airlines
Find Deal
Fri, Jan 31 - Tue, Feb 4
1:53 pm - 4:32 pmONT-IAD
23h 39m2 stops
6:57 pm - 10:38 amIAD-ONT
18h 41m1 stop
$359Alaska Airlines
Find Deal
Wed, Dec 11 - Sun, Jan 19
6:10 am - 10:41 pmONT-IAD
13h 31m2 stops
5:04 pm - 10:16 pmIAD-ONT
8h 12m1 stop
$371American Airlines
Find Deal
Sat, Jan 11 - Sun, Jan 26
11:45 am - 11:00 pmONT-IAD
8h 15m1 stop
8:00 pm - 12:10 amIAD-ONT
7h 10m1 stop
$427Southwest
Find Deal
Tue, Dec 24 - Sun, Jan 5
9:25 am - 11:00 pmONT-IAD
10h 35m2 stops
5:15 am - 11:05 amIAD-ONT
8h 50m2 stops
$437Southwest
Find Deal
Tue, Dec 24 - Sun, Jan 5
3:56 pm - 10:07 amONT-IAD
15h 11m2 stops
$116Frontier
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Sat, Dec 7
6:50 pm - 10:44 amONT-IAD
12h 54m2 stops
$119Frontier
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Thu, Jan 23
6:10 am - 7:28 pmONT-IAD
10h 18m2 stops
$173American Airlines
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Wed, Dec 11
7:30 pm - 8:39 amONT-IAD
10h 09m2 stops
$203American Airlines
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Sun, Dec 8
6:00 am - 4:25 pmONT-IAD
7h 25m1 stop
$211United Airlines
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Wed, Dec 4
5:05 am - 3:38 pmONT-IAD
7h 33m1 stop
$213United Airlines
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Wed, Dec 18
1:18 pm - 11:49 pmONT-IAD
7h 31m1 stop
$219Delta
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Wed, Nov 27
7:10 am - 11:42 pmONT-IAD
13h 32m2 stops
$224Delta
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Wed, Nov 27
11:30 am - 11:00 pmONT-IAD
8h 30m2 stops
$234Southwest
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Wed, Dec 18
6:15 am - 7:00 pmONT-IAD
9h 45m2 stops
$269Southwest
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Thu, Nov 21
4:15 pm - 7:01 amONT-IAD
11h 46m1 stop
7:00 am - 1:24 pmIAD-ONT
9h 24m1 stop
$545Alaska Airlines
Find Deal
Tue, Nov 19 - Thu, Nov 21
10:00 pm - 11:34 amONT-IAD
10h 34m2 stops
6:00 am - 10:43 amIAD-ONT
7h 43m1 stop
$550Delta
Find Deal
Tue, Nov 19 - Sun, Nov 24
10:00 am - 11:59 pmONT-IAD
10h 59m1 stop
7:02 am - 1:27 pmIAD-ONT
9h 25m1 stop
$595Alaska Airlines
Find Deal
Sun, Nov 17 - Sun, Nov 24
6:10 am - 7:20 amONT-IAD
22h 10m3 stops
4:00 pm - 8:44 pmIAD-ONT
7h 44m1 stop
$648United Airlines
Find Deal
Tue, Nov 19 - Sun, Nov 24
6:28 pm - 5:23 amONT-IAD
7h 55m1 stop
8:25 am - 10:02 pmIAD-ONT
16h 37m2 stops
$658United Airlines
Find Deal
Tue, Nov 19 - Wed, Nov 20
4:15 pm - 7:01 amONT-IAD
11h 46m1 stop
8:20 am - 3:20 pmIAD-ONT
10h 00m1 stop
$748Alaska Airlines
Find Deal
Tue, Nov 19 - Wed, Nov 20
10:00 am - 11:59 pmONT-IAD
10h 59m1 stop
7:00 am - 1:24 pmIAD-ONT
9h 24m1 stop
$754Alaska Airlines
Find Deal
Fri, Nov 15 - Mon, Nov 18
11:53 am - 12:06 amONT-IAD
9h 13m1 stop
10:02 am - 7:42 pmIAD-ONT
12h 40m2 stops
$759Delta
Find Deal
Fri, Nov 15 - Tue, Nov 19
10:00 pm - 11:34 amONT-IAD
10h 34m2 stops
11:52 am - 11:01 pmIAD-ONT
14h 09m2 stops
$764Delta
Find Deal
Fri, Nov 15 - Tue, Nov 19
6:28 pm - 5:23 amONT-IAD
7h 55m1 stop
8:30 am - 2:34 pmIAD-ONT
9h 04m1 stop
$869United Airlines
Find Deal
Sun, Nov 17 - Mon, Nov 18

American Airlines flights from Ontario to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Ontario to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Nov 23
ONT7:30 pmOntario
10h 10m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
Nov 26
IAD6:16 amWashington, D.C. Dulles Intl
8h 47m
1 stop
ONT12:03 pmOntario
American Airlines
Jan 11
ONT6:10 amOntario
10h 25m
2 stops
IAD7:35 pmWashington, D.C. Dulles Intl
Jan 28
IAD9:11 amWashington, D.C. Dulles Intl
12h 26m
2 stops
ONT6:37 pmOntario
American Airlines
Jan 11
ONT6:10 amOntario
13h 31m
2 stops
IAD10:41 pmWashington, D.C. Dulles Intl
Jan 26
IAD5:04 pmWashington, D.C. Dulles Intl
8h 12m
1 stop
ONT10:16 pmOntario

Delta flights from Ontario to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Jan 11
ONT1:21 pmOntario
7h 15m
1 stop
IAD11:36 pmWashington, D.C. Dulles Intl
Jan 28
IAD3:05 pmWashington, D.C. Dulles Intl
11h 48m
2 stops
ONT11:53 pmOntario
Delta
Nov 24
ONT1:18 pmOntario
7h 31m
1 stop
IAD11:49 pmWashington, D.C. Dulles Intl
Nov 26
IAD7:00 amWashington, D.C. Dulles Intl
8h 11m
1 stop
ONT12:11 pmOntario
Delta
Dec 11
ONT1:25 pmOntario
7h 24m
1 stop
IAD11:49 pmWashington, D.C. Dulles Intl
Jan 19
IAD3:05 pmWashington, D.C. Dulles Intl
11h 20m
2 stops
ONT11:25 pmOntario

How to get the cheapest flight ticket from Ontario to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

January. The cheapest time of year to fly to Washington, D.C. Dulles Intl Airport from Ontario is January. Most expensive is March

What is the cheapest day to depart Ontario for Washington, D.C. Dulles Intl Airport?

Thursday. The cheapest day of the week is typically Thursday. The most expensive is typically Sunday

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

In the afternoon. Ontario to Washington, D.C. Dulles Intl Airport flights are approximately 17% more expensive at noon than in the afternoon

What is the cheapest airline that flies to Washington, D.C. Dulles Intl Airport from Ontario?

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

How far in advance should you book Ontario to Washington, D.C. Dulles Intl Airport flights?

46 days before. The cheapest time to buy a flight from Ontario to Washington, D.C. Dulles Intl Airport is approximately 46 days to departure

Can stopping save me money on Ontario to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 28% on your flight if you consider stops on a Ontario to Washington, D.C. Dulles Intl Airport flight.

How have Ontario to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of November 2024, prices for Ontario to Washington, D.C. Dulles Intl Airport flights are approximately 42% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Washington, D.C. Dulles Intl Airport (ONT to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Washington, D.C. Dulles Intl Airport

Best Price Found

$116

Fastest flight time

6h 25m

Direct flights

None
The best one-way flight to Washington, D.C. Dulles Intl Airport from Ontario in the past 72 hours is $116. The best round-trip flight deal from Ontario to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $233.
The fastest flight from Ontario to Washington, D.C. Dulles Intl Airport takes 6h 25m
There are no direct flights from Ontario to Washington, D.C. Dulles Intl Airport. Popular non-direct route for this connection is Ontario Airport - Washington, D.C. Dulles Intl Airport.

  • How far is Ontario to Washington, D.C. Dulles Intl by plane?

    The distance between Ontario and Washington, D.C. Dulles Intl is about 2238.2 mi. 6h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Ontario Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Washington, D.C. Dulles Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ontario to Washington, D.C. Dulles Intl Airport?

  • What is the most popular airline from Ontario to Washington, D.C. Dulles Intl Airport?


Best airlines flying from Ontario to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Ontario to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $153Free CancellationRating
6.1
3,551 reviews
Search Frontier flights
American AirlinesPriceFrom $192Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $257Free CancellationRating
8.0
8,788 reviews
Search Delta flights
United AirlinesPriceFrom $279Free CancellationRating
7.4
9,194 reviews
Search United Airlines flights
SouthwestPriceFrom $296Free CancellationRating
8.1
5,045 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Washington, D.C.?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Washington, D.C.. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Washington, D.C.?

momondo helps you find the best flight between Ontario and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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