Find flights
When to book
FAQs & Tips
Direct Flights
Deals

Find deals on international flights to Ontario from $38

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 5/14. 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
Sun 6/2
Sun 6/9

Search hundreds of travel sites at once for cheap international flights to Ontario

In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

January

High season

December

Cheapest flight

$38
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Dallas/Fort Worth Airport to Ontario

FAQs for booking Worldwide to Ontario flights

  • How does KAYAK find such low prices on flights from Worldwide 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 Worldwide to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Worldwide 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 Worldwide 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 Worldwide with another airline.

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

Nonstop departures

Worldwide 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 Worldwide

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 Worldwide to Ontario

Recent round-trip flight deals

6/22Sat
nonstopFrontier
1h 23mSFO-ONT
6/26Wed
nonstopFrontier
1h 28mONT-SFO
$39
7/6Sat
nonstopFrontier
1h 21mSFO-ONT
7/9Tue
nonstopFrontier
1h 26mONT-SFO
$40
6/5Wed
nonstopDelta
2h 38mSEA-ONT
6/12Wed
1 stopDelta
6h 59mONT-SEA
$166
5/24Fri
nonstop
2h 44mSEA-ONT
5/29Wed
nonstop
2h 41mONT-SEA
$176
6/1Sat
nonstopUnited Airlines
1h 32mSFO-ONT
6/8Sat
nonstopUnited Airlines
1h 25mONT-SFO
$189
8/12Mon
nonstop
2h 33mSEA-ONT
8/19Mon
nonstop
2h 47mONT-SEA
$199
6/8Sat
1 stopDelta
7h 07mPDX-ONT
6/8Sat
1 stopDelta
4h 16mONT-PDX
$206
10/15Tue
1 stopAmerican Airlines
6h 44mSEA-ONT
10/23Wed
1 stopAmerican Airlines
7h 14mONT-SEA
$206
5/21Tue
1 stopAmerican Airlines
5h 40mHOU-ONT
5/27Mon
1 stopAmerican Airlines
6h 21mONT-HOU
$278
10/2Wed
1 stopUnited Airlines
11h 11mEWR-ONT
10/3Thu
1 stopUnited Airlines
7h 38mONT-EWR
$319

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/14Tue
nonstopFrontier
3h 22mDFW-ONT
$38
6/29Sat
nonstopFrontier
1h 23mSFO-ONT
$38
6/5Wed
1 stopDelta
6h 43mSEA-ONT
$88
5/25Sat
nonstopDelta
2h 39mSEA-ONT
$94
5/29Wed
1 stopAmerican Airlines
4h 45mSEA-ONT
$98
5/28Tue
1 stopUnited Airlines
4h 50mPDX-ONT
$98
8/22Thu
nonstopUnited Airlines
1h 26mSFO-ONT
$103
6/1Sat
1 stopAlaska Airlines
4h 33mPDX-ONT
$103
6/8Sat
1 stopAmerican Airlines
3h 48mDEN-ONT
$104
7/30Tue
nonstopAlaska Airlines
2h 33mSEA-ONT
$104

Search by stops

Search by airline

Search by price

Last minute flights from Worldwide to Ontario

Last minute flight, train and bus deals

5/7Tue
nonstopFrontier
1h 29mSFO-ONT
5/9Thu
nonstopFrontier
1h 27mONT-SFO
$89
5/8Wed
multi-stopFrontier
5h 38mSFO-ONT
5/15Wed
nonstopFrontier
1h 27mONT-SFO
$94
5/4Sat
multi-stopAmerican Airlines
5h 40mSFO-ONT
5/7Tue
multi-stopAmerican Airlines
6h 09mONT-SFO
$282
5/6Mon
multi-stopDelta
8h 02mLGA-ONT
5/7Tue
multi-stopDelta
7h 54mONT-LGA
$286
5/7Tue
multi-stopDelta
8h 58mJFK-ONT
5/8Wed
multi-stopDelta
8h 00mONT-JFK
$286
5/4Sat
multi-stopUnited Airlines
7h 09mPDX-ONT
5/7Tue
multi-stopUnited Airlines
4h 02mONT-PDX
$310
5/6Mon
multi-stopAmerican Airlines
10h 30mLGA-ONT
5/10Fri
multi-stopAmerican Airlines
9h 44mONT-LGA
$317
5/8Wed
nonstop
2h 33mSEA-ONT
5/18Sat
nonstop
2h 53mONT-SEA
$337
5/7Tue
multi-stop
8h 51mSEA-ONT
5/9Thu
nonstop
2h 46mONT-SEA
$348
5/8Wed
multi-stopUnited Airlines
7h 09mPDX-ONT
5/15Wed
multi-stopUnited Airlines
4h 02mONT-PDX
$364

Search by stops

Search by airline

Search by price

Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Worldwide

Cabin classes:

$341
$478
$193
$33