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$63 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 2/15. 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

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Good to know

Low season

January

High season

October

Cheapest flight

$63
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 1% 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 Airport, which days they fly and book direct flights.

Nonstop departures

District of Columbia to Ontario

Monday

Aeromexico, Air Canada, Air France, +20 more

Aeromexico, Air Canada, +21 more

Tuesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Wednesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Thursday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Friday

Aeromexico, Air Canada, Air France, +20 more

Aeromexico, Air Canada, +21 more

Saturday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Sunday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

See more direct flights

Nonstop returns

Ontario to District of Columbia

Monday

Aeromexico, Air Canada, Air France, +20 more

Aeromexico, Air Canada, +21 more

Tuesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Wednesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Thursday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Friday

Aeromexico, Air Canada, Air France, +20 more

Aeromexico, Air Canada, +21 more

Saturday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Sunday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

See more direct flights
See more direct flights

Book cheap flights from District of Columbia to Ontario

Recent round-trip flight deals

12/10Tue
1 stopFrontier
8h 44mDCA-ONT
12/12Thu
1 stopFrontier
7h 14mONT-DCA
$126
1/7Tue
1 stopFrontier
13h 46mDCA-ONT
1/14Tue
1 stopFrontier
11h 14mONT-DCA
$128
11/20Wed
1 stopAlaska Airlines
11h 20mIAD-ONT
11/28Thu
1 stopAlaska Airlines
9h 06mONT-IAD
$322
2/5Wed
1 stopAlaska Airlines
18h 41mIAD-ONT
2/10Mon
1 stopAlaska Airlines
19h 56mONT-IAD
$342
11/25Mon
1 stopDelta
8h 11mIAD-ONT
12/4Wed
1 stopDelta
7h 31mONT-IAD
$343
12/11Wed
1 stopDelta
8h 30mIAD-ONT
1/7Tue
1 stopDelta
7h 17mONT-IAD
$356
11/24Sun
1 stopAmerican Airlines
8h 47mIAD-ONT
11/24Sun
2 stopsAmerican Airlines
10h 10mONT-IAD
$367
12/25Wed
1 stopUnited Airlines
9h 10mIAD-ONT
12/29Sun
1 stopUnited Airlines
7h 38mONT-IAD
$369
11/24Sun
2 stopsAmerican Airlines
10h 03mIAD-ONT
11/24Sun
2 stopsAmerican Airlines
10h 10mONT-IAD
$372
11/21Thu
1 stopUnited Airlines
10h 53mIAD-ONT
11/25Mon
1 stopUnited Airlines
8h 04mONT-IAD
$447

Search by stops

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Recent one-way flight deals

2/15Sat
1 stopFrontier
7h 45mDCA-ONT
$63
11/16Sat
1 stopFrontier
9h 04mDCA-ONT
$64
11/20Wed
1 stopAlaska Airlines
10h 00mIAD-ONT
$159
11/26Tue
1 stopAmerican Airlines
8h 31mDCA-ONT
$163
11/25Mon
1 stopDelta
8h 11mIAD-ONT
$163
12/25Wed
1 stopUnited Airlines
9h 10mIAD-ONT
$171
12/10Tue
1 stopAlaska Airlines
16h 00mIAD-ONT
$177
12/7Sat
1 stopDelta
8h 11mDCA-ONT
$178
1/15Wed
2 stopsAmerican Airlines
11h 24mIAD-ONT
$183
1/19Sun
1 stopUnited Airlines
7h 08mIAD-ONT
$198

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

11/5Tue
multi-stopFrontier
14h 04mDCA-ONT
11/12Tue
multi-stopFrontier
26h 39mONT-DCA
$158
11/4Mon
multi-stopFrontier
19h 58mDCA-ONT
11/6Wed
multi-stopFrontier
22h 15mONT-DCA
$274
11/3Sun
multi-stopAmerican Airlines
8h 20mIAD-ONT
11/19Tue
multi-stopAmerican Airlines
13h 47mONT-IAD
$567
11/3Sun
multi-stopAmerican Airlines
9h 39mIAD-ONT
11/19Tue
multi-stopAmerican Airlines
13h 47mONT-IAD
$572
11/5Tue
multi-stopDelta
10h 18mIAD-ONT
11/15Fri
multi-stopDelta
6h 42mONT-IAD
$590
11/5Tue
multi-stopDelta
8h 18mIAD-ONT
11/15Fri
multi-stopDelta
10h 34mONT-IAD
$595
11/5Tue
multi-stopAlaska Airlines
10h 00mIAD-ONT
11/12Tue
multi-stopAlaska Airlines
14h 59mONT-IAD
$683
11/4Mon
multi-stopAlaska Airlines
9h 24mIAD-ONT
11/7Thu
multi-stopAlaska Airlines
10h 59mONT-IAD
$704
11/3Sun
multi-stopUnited Airlines
7h 31mDCA-ONT
11/10Sun
multi-stopUnited Airlines
11h 36mONT-DCA
$826
11/2Sat
multi-stopUnited Airlines
11h 04mIAD-ONT
11/2Sat
multi-stopUnited Airlines
10h 00mONT-IAD
$837

Search by stops

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Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario