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.

What are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is Lufthansa, followed by United Airlines and Scandinavian Airlines.

$32 International Flights to Ontario

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Flight Deals

Book Cheap International Flights Deals to Ontario

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip international flight deals to Ontario

Wed, Nov 11 - Sat, Nov 14

9:45 am - 4:21 pmGDL Guadalajara Miguel Hidal-ONT Ontario

8h 36m1 stop Las Vegas Harry Reid Intl

10:00 am - 8:01 pmONT Ontario-GDL Guadalajara Miguel Hidal

8h 01m1 stop Las Vegas Harry Reid Intl

$309Frontier

Tue, Nov 17 - Wed, Dec 2

9:45 am - 4:21 pmGDL Guadalajara Miguel Hidal-ONT Ontario

8h 36m1 stop Las Vegas Harry Reid Intl

8:05 am - 5:47 pmONT Ontario-GDL Guadalajara Miguel Hidal

7h 42m1 stop Las Vegas Harry Reid Intl

$311Frontier

Mon, Dec 14 - Mon, Feb 8

9:02 pm - 10:15 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 13mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$325Volaris

Sun, Dec 6 - Sun, Dec 13

1:35 pm - 9:38 amGDL Guadalajara Miguel Hidal-ONT Ontario

22h 03m2 stops Houston George Bush Intcntl San Francisco

5:45 am - 10:35 pmONT Ontario-GDL Guadalajara Miguel Hidal

14h 50m1 stop Houston George Bush Intcntl

$336United Airlines

Sun, Dec 6 - Sun, Dec 13

1:35 pm - 9:38 amGDL Guadalajara Miguel Hidal-ONT Ontario

22h 03m2 stops Houston George Bush Intcntl San Francisco

5:45 am - 10:35 pmONT Ontario-GDL Guadalajara Miguel Hidal

14h 50m1 stop Houston George Bush Intcntl

$337United Airlines

Thu, Nov 5 - Mon, Nov 9

10:00 am - 3:21 pmYYC Calgary-ONT Ontario

7h 21m1 stop Las Vegas Harry Reid Intl

2:23 pm - 12:15 pmONT Ontario-YYC Calgary

19h 52m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$381Multiple Airlines

Tue, Dec 1 - Sat, Dec 5

7:25 am - 11:17 amYYC Calgary-ONT Ontario

5h 52m1 stop Salt Lake City

1:11 pm - 1:25 amONT Ontario-YYC Calgary

10h 14m1 stop Salt Lake City

$401Delta

Fri, Mar 5 - Sun, Mar 7

2:52 pm - 10:15 pmGUA Guatemala City La Aurora-ONT Ontario

9h 23m1 stop Guadalajara Miguel Hidal

12:05 am - 2:07 pmONT Ontario-GUA Guatemala City La Aurora

12h 02m1 stop Guadalajara Miguel Hidal

$438Volaris

Thu, Feb 25 - Wed, Mar 10

3:00 pm - 10:15 pmSJO San José Juan Santamaria Intl-ONT Ontario

9h 15m1 stop Guadalajara Miguel Hidal

12:05 am - 10:44 pmONT Ontario-SJO San José Juan Santamaria Intl

20h 39m1 stop Guadalajara Miguel Hidal

$490Multiple Airlines

Sun, Nov 8 - Tue, May 4

2:55 am - 6:34 pmHYD Hyderabad Rajiv Gandhi Intl-ONT Ontario

29h 09m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

5:47 pm - 12:30 amONT Ontario-HYD Hyderabad Rajiv Gandhi Intl

66h 13m2 stops Seattle/Tacoma Intl Amsterdam Schiphol

$985Delta

Recent last minute international flight deals to Ontario

Fri, Oct 23 - Sat, Nov 14

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

10:00 am - 8:01 pmONT Ontario-GDL Guadalajara Miguel Hidal

8h 01m1 stop Las Vegas Harry Reid Intl

$351Frontier

Fri, Oct 23 - Mon, Oct 26

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

9:36 pm - 1:39 amONT Ontario-GDL Guadalajara Miguel Hidal

3h 03mnonstop

$362Volaris

Wed, Oct 21 - Wed, Oct 28

1:27 pm - 8:58 pmYYC Calgary-ONT Ontario

8h 31m1 stop Denver Intl

1:29 pm - 9:53 pmONT Ontario-YYC Calgary

7h 24m1 stop Denver Intl

$446United Airlines

Wed, Oct 21 - Wed, Oct 28

7:00 pm - 6:05 pmYYC Calgary-ONT Ontario

24h 05m2 stops Seattle/Tacoma Intl Boise Air Term. Gowen Fld

4:42 pm - 10:43 amONT Ontario-YYC Calgary

17h 01m2 stops Boise Air Term. Gowen Fld Seattle/Tacoma Intl

$471Alaska Airlines

Wed, Oct 21 - Sat, Oct 31

7:00 pm - 10:17 amYYC Calgary-ONT Ontario

16h 17m1 stop Seattle/Tacoma Intl

11:13 am - 6:10 pmONT Ontario-YYC Calgary

5h 57m1 stop Seattle/Tacoma Intl

$486Alaska Airlines

Wed, Oct 21 - Sat, Oct 31

6:45 am - 3:16 pmYYC Calgary-ONT Ontario

9h 31m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

10:25 am - 9:45 pmONT Ontario-YYC Calgary

10h 20m1 stop Dallas/Fort Worth

$491American Airlines

Wed, Oct 21 - Fri, Oct 23

3:22 pm - 10:51 pmYYC Calgary-ONT Ontario

8h 29m1 stop San Francisco

1:24 pm - 9:48 pmONT Ontario-YYC Calgary

7h 24m1 stop Denver Intl

$493United Airlines

Wed, Oct 21 - Sun, Nov 1

1:40 pm - 11:55 pmYYC Calgary-ONT Ontario

11h 15m2 stops Minneapolis St Paul Salt Lake City

6:00 am - 1:43 pmONT Ontario-YYC Calgary

5h 43m1 stop Salt Lake City

$520Delta

Thu, Oct 22 - Sat, Nov 7

11:05 am - 10:59 pmLIS Lisbon Humberto Delgado-ONT Ontario

19h 54m2 stops Philadelphia Charlotte Douglas

7:00 am - 9:05 amONT Ontario-LIS Lisbon Humberto Delgado

18h 05m2 stops Dallas/Fort Worth Philadelphia

$758American Airlines

Wed, Oct 21 - Sun, Oct 25

6:00 am - 4:23 pmATH Athens Eleftherios V.-ONT Ontario

20h 23m2 stops Amsterdam Schiphol Salt Lake City

7:07 am - 1:00 pmONT Ontario-ATH Athens Eleftherios V.

20h 53m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

$1,395Delta

Recent direct international flight deals to Ontario

Mon, Dec 14 - Mon, Feb 8

9:02 pm - 10:15 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 13mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$325Volaris

Fri, Oct 30 - Thu, Nov 12

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$344Volaris

Fri, Oct 30 - Sat, Nov 14

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$348Volaris

Mon, Dec 14 - Mon, Feb 8

9:02 pm - 10:15 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 13mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$349Volaris

Fri, Oct 30 - Sat, Nov 14

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$350Volaris

Thu, Oct 29 - Sun, Nov 8

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$351Volaris

Sat, Oct 31 - Sat, Nov 7

8:59 pm - 11:05 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 06mnonstop

12:05 am - 5:09 amONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$352Volaris

Wed, Nov 11 - Sat, Nov 14

9:02 pm - 10:15 pmGDL Guadalajara Miguel Hidal-ONT Ontario

3h 13mnonstop

6:37 pm - 11:41 pmONT Ontario-GDL Guadalajara Miguel Hidal

3h 04mnonstop

$353Volaris

Tue, Nov 3 - Tue, Nov 24

5:35 pm - 8:50 pmSAL San Salvador El Salvador Intl-ONT Ontario

5h 15mnonstop

10:45 pm - 5:30 amONT Ontario-SAL San Salvador El Salvador Intl

4h 45mnonstop

$666Avianca

Tue, Oct 27 - Sat, Oct 31

5:35 pm - 9:50 pmSAL San Salvador El Salvador Intl-ONT Ontario

5h 15mnonstop

11:45 pm - 5:30 amONT Ontario-SAL San Salvador El Salvador Intl

4h 45mnonstop

$686Avianca

Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What are the most popular airlines flying to Ontario?: The most popular airline among KAYAK users flying to Ontario is Lufthansa, followed by United Airlines and Scandinavian Airlines.

Find deals

Low season	January
High season	October
Cheapest flight	$32

Best time to beat the crowds with an average 2% drop in price.

Most popular time to fly and prices are also 10% lower on average.

Flight from Denver to Ontario

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.