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$77 Find cheap flights from District of Columbia to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 7/11
Thu 7/18

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In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

May

Cheapest flight

$77
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Reagan Washington National Airport to Ontario

FAQs for booking flights from District of Columbia to Ontario

  • How does KAYAK find such low prices on flights from District of Columbia to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from District of Columbia to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to District of Columbia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from District of Columbia to Ontario?

Find which airlines fly direct from District of Columbia to Ontario, which days they fly and book direct flights.

Nonstop departures

District of Columbia to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to District of Columbia

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Book cheap flights from District of Columbia to Ontario

Recent round-trip flight deals

7/2Tue
1 stopFrontier
8h 00mDCA-ONT
7/8Mon
1 stopFrontier
8h 20mONT-DCA
$155
7/2Tue
1 stopFrontier
8h 00mDCA-ONT
7/8Mon
1 stopFrontier
8h 20mONT-DCA
$158
8/13Tue
1 stopAmerican Airlines
9h 53mIAD-ONT
8/20Tue
1 stopAmerican Airlines
9h 36mONT-IAD
$282
8/13Tue
1 stopAmerican Airlines
9h 53mIAD-ONT
8/20Tue
2 stopsAmerican Airlines
9h 38mONT-IAD
$287
7/30Tue
1 stopDelta
7h 13mIAD-ONT
8/13Tue
1 stopDelta
7h 29mONT-IAD
$290
8/23Fri
1 stopDelta
8h 00mIAD-ONT
8/26Mon
2 stopsDelta
12h 49mONT-IAD
$295
9/10Tue
1 stopAlaska Airlines
9h 07mIAD-ONT
9/11Wed
1 stopAlaska Airlines
10h 49mONT-IAD
$298
7/16Tue
1 stopUnited Airlines
8h 14mIAD-ONT
7/31Wed
1 stopUnited Airlines
8h 04mONT-IAD
$351
7/5Fri
1 stopUnited Airlines
11h 09mIAD-ONT
7/15Mon
1 stopUnited Airlines
8h 00mONT-IAD
$375
9/3Tue
2 stopsAlaska Airlines
18h 15mIAD-ONT
9/17Tue
1 stopAlaska Airlines
10h 49mONT-IAD
$385

Search by stops

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Recent one-way flight deals

7/2Tue
1 stopFrontier
8h 00mDCA-ONT
$77
7/2Tue
1 stopFrontier
8h 00mDCA-ONT
$78
11/28Thu
1 stopDelta
8h 02mDCA-ONT
$145
7/2Tue
1 stopUnited Airlines
8h 14mIAD-ONT
$145
9/10Tue
1 stopAlaska Airlines
9h 07mIAD-ONT
$149
7/23Tue
2 stopsDelta
8h 53mDCA-ONT
$150
7/2Tue
2 stopsAmerican Airlines
13h 51mIAD-ONT
$150
7/23Tue
1 stopUnited Airlines
8h 14mIAD-ONT
$176
9/4Wed
2 stopsAlaska Airlines
14h 15mDCA-ONT
$204
7/5Fri
1 stopAmerican Airlines
8h 22mIAD-ONT
$269

Search by stops

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Search by price

Last minute flights from District of Columbia to Ontario

Last minute flight, train and bus deals

6/12Wed
multi-stopFrontier
13h 56mDCA-ONT
6/17Mon
multi-stopFrontier
11h 29mONT-DCA
$298
6/13Thu
multi-stopFrontier
26h 23mDCA-ONT
6/18Tue
multi-stopFrontier
8h 02mONT-DCA
$335
6/16Sun
multi-stopDelta
7h 30mDCA-ONT
6/30Sun
multi-stopDelta
8h 00mONT-DCA
$521
6/15Sat
multi-stopAlaska Airlines
11h 20mIAD-ONT
6/20Thu
multi-stopAlaska Airlines
10h 59mONT-IAD
$584
6/12Wed
multi-stopAlaska Airlines
11h 26mIAD-ONT
6/14Fri
multi-stopAlaska Airlines
10h 59mONT-IAD
$624
6/15Sat
multi-stopAmerican Airlines
7h 56mIAD-ONT
6/30Sun
multi-stopAmerican Airlines
7h 23mONT-IAD
$658
6/15Sat
multi-stopUnited Airlines
11h 04mIAD-ONT
6/22Sat
multi-stopUnited Airlines
8h 20mONT-IAD
$684
6/15Sat
multi-stopDelta
8h 43mDCA-ONT
6/30Sun
multi-stopDelta
12h 18mONT-DCA
$696
6/16Sun
multi-stopUnited Airlines
7h 38mIAD-ONT
6/22Sat
multi-stopUnited Airlines
8h 20mONT-IAD
$751
6/14Fri
multi-stopAmerican Airlines
7h 56mIAD-ONT
6/22Sat
multi-stopAmerican Airlines
7h 19mONT-IAD
$870

Search by stops

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - District of Columbia

Cabin classes: