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$104 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 8/27. 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
jue. 6/27
jue. 7/4

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Good to know

Low season

January

High season

May

Cheapest flight

$104
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 10% 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

8/28mié.
1 stopFrontier
7h 40mDCA-ONT
9/4mié.
1 stopFrontier
12h 42mONT-DCA
$207
8/27mar.
1 stopFrontier
8h 32mDCA-ONT
9/4mié.
1 stopFrontier
12h 42mONT-DCA
$208
8/24sáb.
1 stopAmerican Airlines
10h 13mIAD-ONT
9/7sáb.
1 stopAmerican Airlines
7h 02mONT-IAD
$287
8/15jue.
1 stopAmerican Airlines
9h 53mIAD-ONT
8/19lun.
1 stopAmerican Airlines
7h 14mONT-IAD
$289
8/27mar.
1 stopDelta
7h 13mIAD-ONT
9/1dom.
1 stopDelta
7h 29mONT-IAD
$290
8/7mié.
1 stopDelta
9h 01mIAD-ONT
8/11dom.
1 stopDelta
7h 10mONT-IAD
$304
8/29jue.
1 stopUnited Airlines
9h 33mIAD-ONT
9/2lun.
1 stopUnited Airlines
7h 59mONT-IAD
$314
8/12lun.
1 stopUnited Airlines
8h 16mIAD-ONT
8/19lun.
1 stopUnited Airlines
8h 02mONT-IAD
$340
11/13mié.
1 stopAlaska Airlines
11h 20mIAD-ONT
12/4mié.
1 stopAlaska Airlines
10h 59mONT-IAD
$488
7/9mar.
2 stopsAlaska Airlines
15h 25mIAD-ONT
7/16mar.
1 stopAlaska Airlines
8h 15mONT-IAD
$512

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Recent one-way flight deals

8/27mar.
1 stopFrontier
7h 40mDCA-ONT
$104
8/28mié.
1 stopFrontier
7h 40mDCA-ONT
$114
7/31mié.
1 stopDelta
7h 13mIAD-ONT
$145
11/12mar.
1 stopAmerican Airlines
7h 50mDCA-ONT
$146
11/6mié.
1 stopAmerican Airlines
7h 51mIAD-ONT
$146
7/30mar.
1 stopDelta
7h 13mIAD-ONT
$159
11/1vie.
1 stopUnited Airlines
10h 02mDCA-ONT
$195
6/11mar.
1 stopUnited Airlines
11h 04mIAD-ONT
$195
8/27mar.
2 stopsAlaska Airlines
14h 35mDCA-ONT
$204
8/27mar.
2 stopsAlaska Airlines
33h 02mIAD-ONT
$242

Search by stops

Search by airline

Search by price

Last minute flights from District of Columbia to Ontario

Last minute flight, train and bus deals

5/30jue.
multi-stopFrontier
19h 59mDCA-ONT
6/4mar.
multi-stopFrontier
17h 58mONT-DCA
$316
5/30jue.
multi-stopFrontier
8h 02mDCA-ONT
6/5mié.
multi-stopFrontier
8h 16mONT-DCA
$318
6/1sáb.
multi-stopDelta
9h 02mIAD-ONT
6/10lun.
multi-stopDelta
8h 30mONT-IAD
$549
5/30jue.
multi-stopAmerican Airlines
7h 45mIAD-ONT
6/5mié.
multi-stopAmerican Airlines
7h 13mONT-IAD
$581
6/2dom.
multi-stopAmerican Airlines
10h 02mIAD-ONT
6/8sáb.
multi-stopAmerican Airlines
7h 13mONT-IAD
$583
6/1sáb.
multi-stopAlaska Airlines
11h 26mIAD-ONT
6/8sáb.
multi-stopAlaska Airlines
10h 59mONT-IAD
$584
6/2dom.
multi-stopAlaska Airlines
9h 21mIAD-ONT
7/8lun.
multi-stopAlaska Airlines
12h 11mONT-IAD
$613
6/2dom.
multi-stopDelta
7h 58mIAD-ONT
6/15sáb.
multi-stopDelta
7h 34mONT-IAD
$631
5/31vie.
multi-stopUnited Airlines
11h 06mIAD-ONT
6/9dom.
multi-stopUnited Airlines
8h 00mONT-IAD
$684
5/30jue.
multi-stopUnited Airlines
7h 08mIAD-ONT
6/2dom.
multi-stopUnited Airlines
8h 00mONT-IAD
$724

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - District of Columbia

Cabin classes: