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Cheap Flights from Washington to Ontario from $177

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Cheap IAD to ONT Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Wed, Aug 28 - Wed, Aug 28
IAD
Washington
to
ONT
Ontario
$177

roundtrip

found 2 hours ago

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Wed, Oct 9 - Wed, Oct 16
IAD
Washington
to
ONT
Ontario
$184

roundtrip

just found

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Mon, Oct 14 - Mon, Oct 14
IAD
Washington
to
ONT
Ontario
$198

roundtrip

found 7 hours ago

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Wed, Sep 4 - Mon, Sep 9
IAD
Washington
to
ONT
Ontario
$204

roundtrip

just found

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Sat, Sep 14 - Sat, Sep 21
IAD
Washington
to
ONT
Ontario
$206

roundtrip

just found

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Wed, Aug 14 - Sat, Aug 17
IAD
Washington
to
ONT
Ontario
$218

roundtrip

found 4 hours ago

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Fri, Sep 13 - Fri, Sep 13
IAD
Washington
to
ONT
Ontario
$219

roundtrip

found 3 hours ago

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Fri, Nov 1 - Mon, Nov 4
IAD
Washington
to
ONT
Ontario
$225

roundtrip

just found

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Mon, Aug 19 - Fri, Aug 23
IAD
Washington
to
ONT
Ontario
$229

roundtrip

found 2 hours ago

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Wed, Aug 7 - Wed, Aug 14
IAD
Washington
to
ONT
Ontario
$230

roundtrip

found 2 hours ago

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Wed, Aug 21 - Wed, Aug 21
IAD
Washington
to
ONT
Ontario
$237

roundtrip

found 5 days ago

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Mon, Aug 12 - Mon, Aug 26
IAD
Washington
to
ONT
Ontario
$239

roundtrip

found 2 hours ago

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Wed, Aug 21 - Fri, Sep 6
IAD
Washington
to
ONT
Ontario
$241

roundtrip

found 3 hours ago

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Mon, Sep 9 - Thu, Sep 12
IAD
Washington
to
ONT
Ontario
$243

roundtrip

found 1 hour ago

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Fri, Aug 16 - Fri, Aug 23
IAD
Washington
to
ONT
Ontario
$248

roundtrip

found 2 hours ago

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Sat, Oct 19 - Fri, Oct 25
IAD
Washington
to
ONT
Ontario
$251

roundtrip

found 21 hours ago

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Wed, Sep 18 - Wed, Sep 18
IAD
Washington
to
ONT
Ontario
$358

roundtrip

found 5 days ago

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Tue, Nov 5 - Wed, Nov 13
IAD
Washington
to
ONT
Ontario
$367

roundtrip

found 5 days ago

Open IAD to ONT flights search result page
Wed, Aug 28 - Wed, Aug 28
IAD
Washington
to
ONT
Ontario
$368

roundtrip

found 2 hours ago

Open IAD to ONT flights search result page
Wed, Nov 6 - Wed, Nov 6
IAD
Washington
to
ONT
Ontario
$368

roundtrip

found 5 hours ago

Open IAD to ONT flights search result page

Washington to Ontario route information

Origin Airport Washington Dulles Intl.
Destination Airport Los Angeles - Ontario Intl.
Airlines Serving Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Flight Price $177
Distance 2,236 mi

Orange County

SNA-John Wayne

$229.98

Long Beach

LGB-Long Beach Municipal

$343.00

Los Angeles

LAX-Los Angeles Intl.

$252.27

Burbank

BUR-Bob Hope

$278.40

Top Routes from Washington

Top Routes to Ontario

Cheap IAD to ONT Flights

  • Question : Which airline has the least delays from Dulles to Ontario?
    Answer : Booking with United Airlines means you will arrive to Ontario pretty close to the time your ticket states. In fact, this timely airline has a 100% on-time average.
  • Question : How long does the average person stay in Ontario?
    Answer : Of course, you are not an average person, but if you were, you'd stay around one week.
  • Question : Can I change the date of my flight?
    Answer : Yes, you can adjust your departure date. If you would like to save a little money in doing so, the lowest-cost day to fly in July is Wednesday.
  • Question : How much is a plane ticket to Ontario (ONT) from Dulles (IAD)?
    Answer : Cost can range from $173 to $1,138, prices for IAD to ONT do fluctuate more than most routes in the United States. The further out you reserve your ticket, the more likely you are to save.
  • Question : What is the cheapest day to fly?
    Answer : The cheapest day to fly from Dulles to Ontario is on Wednesday. So, if you would like to save some cash on your next flight look for flights on that day.
  • Question : What is the cheapest airline flying from Dulles to Ontario?
    Answer : Frontier Airlines is offering the best deal at $173. Better take a look quickly because prices range all the way up to $1,138 over the next three months.
  • Question : What is the cheapest day to fly to Ontario?
    Answer : Jul 17th has bookings (as of Jun 17th) for as little as $215. That comes in 52% below the average price for this route. Saving now gives you more cash to spend on your trip.