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Find cheap flights from District of Columbia to Ontario from $93

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 8/21. 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
Fri 6/7
Fri 6/14

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In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

May

Cheapest flight

$93
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 9% 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

8/20Tue
1 stopFrontier
13h 40mDCA-ONT
8/23Fri
1 stopFrontier
8h 20mONT-DCA
$186
8/20Tue
1 stopFrontier
7h 40mDCA-ONT
8/30Fri
1 stopFrontier
12h 42mONT-DCA
$196
11/1Fri
1 stopUnited Airlines
10h 50mIAD-ONT
11/2Sat
1 stopUnited Airlines
6h 25mONT-IAD
$285
10/31Thu
1 stopUnited Airlines
8h 55mIAD-ONT
11/2Sat
1 stopUnited Airlines
6h 43mONT-IAD
$290
8/28Wed
1 stopAmerican Airlines
10h 11mIAD-ONT
9/4Wed
1 stopAmerican Airlines
8h 51mONT-IAD
$296
5/25Sat
1 stopDelta
8h 40mIAD-ONT
5/25Sat
1 stopDelta
8h 43mONT-IAD
$300
8/28Wed
2 stopsAmerican Airlines
11h 34mIAD-ONT
9/4Wed
1 stopAmerican Airlines
6h 56mONT-IAD
$301
5/26Sun
2 stopsDelta
15h 06mDCA-ONT
5/29Wed
1 stopDelta
6h 54mONT-DCA
$305
5/26Sun
1 stopAlaska Airlines
9h 21mIAD-ONT
5/29Wed
1 stopAlaska Airlines
12h 19mONT-IAD
$475
5/26Sun
1 stopAlaska Airlines
11h 26mIAD-ONT
5/30Thu
1 stopAlaska Airlines
12h 19mONT-IAD
$486

Search by stops

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Recent one-way flight deals

8/21Wed
1 stopFrontier
7h 40mDCA-ONT
$93
8/27Tue
1 stopFrontier
7h 40mDCA-ONT
$107
8/21Wed
1 stopUnited Airlines
7h 37mIAD-ONT
$145
8/17Sat
1 stopAmerican Airlines
7h 34mIAD-ONT
$149
6/8Sat
1 stopDelta
7h 20mIAD-ONT
$150
5/29Wed
1 stopAmerican Airlines
7h 45mIAD-ONT
$153
8/21Wed
2 stopsDelta
12h 05mDCA-ONT
$155
8/29Thu
1 stopUnited Airlines
9h 36mDCA-ONT
$195
6/5Wed
1 stopAlaska Airlines
11h 26mIAD-ONT
$221
6/5Wed
1 stopAlaska Airlines
19h 58mIAD-ONT
$227

Search by stops

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Last minute flights from District of Columbia to Ontario

Last minute flight, train and bus deals

5/13Mon
multi-stopFrontier
14h 09mDCA-ONT
5/19Sun
multi-stopFrontier
18h 00mONT-DCA
$292
5/13Mon
multi-stopFrontier
19h 59mDCA-ONT
5/15Wed
multi-stopFrontier
25h 37mONT-DCA
$295
5/9Thu
multi-stopDelta
8h 40mIAD-ONT
5/30Thu
multi-stopDelta
8h 05mONT-IAD
$467
5/9Thu
multi-stopDelta
8h 58mIAD-ONT
6/1Sat
multi-stopDelta
13h 52mONT-IAD
$472
5/10Fri
multi-stopAlaska Airlines
10h 19mIAD-ONT
5/29Wed
multi-stopAlaska Airlines
22h 40mONT-IAD
$533
5/10Fri
multi-stopUnited Airlines
7h 25mIAD-ONT
5/28Tue
multi-stopUnited Airlines
8h 04mONT-IAD
$557
5/10Fri
multi-stopAlaska Airlines
10h 19mIAD-ONT
5/14Tue
multi-stopAlaska Airlines
10h 44mONT-IAD
$584
5/12Sun
multi-stopUnited Airlines
7h 25mIAD-ONT
5/15Wed
multi-stopUnited Airlines
6h 38mONT-IAD
$602
5/13Mon
multi-stopAmerican Airlines
10h 11mIAD-ONT
5/20Mon
multi-stopAmerican Airlines
9h 46mONT-IAD
$862
5/11Sat
multi-stopAmerican Airlines
7h 29mDCA-ONT
5/11Sat
multi-stopAmerican Airlines
9h 30mONT-DCA
$1,014

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - District of Columbia

Cabin classes: