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

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

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

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maryland 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 Maryland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$102 CHEAP FLIGHTS from Maryland to Ontario

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Maryland to Ontario

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Maryland to Ontario

Tue, Dec 8 - Tue, Dec 15

1:05 pm - 10:45 amBWI Baltimore/Washington-ONT Ontario

24h 40m2 stops Dallas/Fort Worth Denver Intl

11:30 am - 12:10 pmONT Ontario-BWI Baltimore/Washington

21h 40m2 stops Denver Intl Dallas/Fort Worth

$161Frontier

Tue, Dec 8 - Wed, Dec 9

6:00 am - 10:17 pmBWI Baltimore/Washington-ONT Ontario

19h 17m2 stops Atlanta Hartsfield-Jackson Denver Intl

11:30 am - 8:42 amONT Ontario-BWI Baltimore/Washington

18h 12m2 stops Denver Intl Atlanta Hartsfield-Jackson

$192Frontier

Thu, Nov 19 - Thu, Nov 26

2:07 pm - 7:08 pmBWI Baltimore/Washington-ONT Ontario

8h 01m1 stop Dallas/Fort Worth

6:00 am - 5:36 pmONT Ontario-BWI Baltimore/Washington

8h 36m1 stop Seattle/Tacoma Intl

$283Multiple Airlines

Thu, Nov 19 - Thu, Dec 3

2:07 pm - 7:08 pmBWI Baltimore/Washington-ONT Ontario

8h 01m1 stop Dallas/Fort Worth

5:01 pm - 5:37 amONT Ontario-BWI Baltimore/Washington

9h 36m1 stop Seattle/Tacoma Intl

$283Multiple Airlines

Mon, Nov 23 - Thu, Nov 26

6:33 am - 1:19 pmBWI Baltimore/Washington-ONT Ontario

9h 46m1 stop Dallas/Fort Worth

1:30 pm - 8:46 amONT Ontario-BWI Baltimore/Washington

16h 16m2 stops Phoenix Sky Harbor Intl Charlotte Douglas

$318American Airlines

Mon, Nov 23 - Wed, Dec 2

4:04 pm - 10:36 pmBWI Baltimore/Washington-ONT Ontario

9h 32m1 stop Dallas/Fort Worth

7:00 am - 7:08 pmONT Ontario-BWI Baltimore/Washington

9h 08m1 stop Dallas/Fort Worth

$333American Airlines

Wed, Nov 18 - Tue, Dec 1

7:15 am - 12:17 pmBWI Baltimore/Washington-ONT Ontario

8h 02m1 stop Salt Lake City

5:12 pm - 6:00 amONT Ontario-BWI Baltimore/Washington

9h 48m1 stop Salt Lake City

$333Delta

Wed, Nov 18 - Wed, Dec 2

7:15 am - 12:17 pmBWI Baltimore/Washington-ONT Ontario

8h 02m1 stop Salt Lake City

5:04 pm - 6:00 amONT Ontario-BWI Baltimore/Washington

9h 56m1 stop Salt Lake City

$333Delta

Sat, Dec 5 - Mon, Dec 7

7:55 am - 12:45 pmBWI Baltimore/Washington-ONT Ontario

7h 50m1 stop Chicago Midway

6:25 pm - 5:45 amONT Ontario-BWI Baltimore/Washington

8h 20m1 stop Phoenix Sky Harbor Intl

$343Southwest

Mon, Dec 7 - Sat, Dec 12

3:45 pm - 9:45 pmBWI Baltimore/Washington-ONT Ontario

9h 00m2 stops Birmingham Denver Intl

1:25 pm - 10:55 pmONT Ontario-BWI Baltimore/Washington

6h 30m1 stop Las Vegas Harry Reid Intl

$348Southwest

Recent last minute flight deals from Maryland to Ontario

Wed, Nov 4 - Fri, Nov 20

11:37 am - 4:38 pmBWI Baltimore/Washington-ONT Ontario

8h 01m1 stop Dallas/Fort Worth

6:08 pm - 9:53 amONT Ontario-BWI Baltimore/Washington

12h 45m1 stop Dallas/Fort Worth

$365Frontier

Wed, Nov 4 - Fri, Nov 20

11:37 am - 4:38 pmBWI Baltimore/Washington-ONT Ontario

8h 01m1 stop Dallas/Fort Worth

7:30 am - 4:37 pmONT Ontario-BWI Baltimore/Washington

30h 07m1 stop Houston George Bush Intcntl

$374Frontier

Tue, Nov 3 - Tue, Nov 10

5:40 pm - 10:57 pmBWI Baltimore/Washington-ONT Ontario

8h 17m1 stop Dallas/Fort Worth

12:42 pm - 10:36 pmONT Ontario-BWI Baltimore/Washington

6h 54m1 stop Dallas/Fort Worth

$493American Airlines

Wed, Nov 4 - Wed, Nov 11

6:45 am - 1:31 pmBWI Baltimore/Washington-ONT Ontario

9h 46m1 stop Dallas/Fort Worth

7:00 am - 7:17 pmONT Ontario-BWI Baltimore/Washington

9h 17m1 stop Dallas/Fort Worth

$493American Airlines

Thu, Nov 5 - Mon, Nov 9

2:07 pm - 7:08 pmBWI Baltimore/Washington-ONT Ontario

8h 01m1 stop Dallas/Fort Worth

4:09 pm - 5:40 amONT Ontario-BWI Baltimore/Washington

10h 31m1 stop Seattle/Tacoma Intl

$548Multiple Airlines

Sat, Oct 31 - Mon, Nov 2

7:02 am - 1:16 pmBWI Baltimore/Washington-ONT Ontario

9h 14m1 stop Seattle/Tacoma Intl

8:03 pm - 11:08 amONT Ontario-BWI Baltimore/Washington

12h 05m1 stop Dallas/Fort Worth

$553Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

6:00 am - 11:06 amBWI Baltimore/Washington-ONT Ontario

8h 06m1 stop Atlanta Hartsfield-Jackson

7:05 am - 5:24 pmONT Ontario-BWI Baltimore/Washington

7h 19m1 stop Atlanta Hartsfield-Jackson

$647Delta

Sat, Oct 31 - Thu, Nov 12

6:00 am - 11:06 amBWI Baltimore/Washington-ONT Ontario

8h 06m1 stop Atlanta Hartsfield-Jackson

11:10 pm - 9:18 amONT Ontario-BWI Baltimore/Washington

7h 08m1 stop Atlanta Hartsfield-Jackson

$647Delta

Wed, Nov 4 - Wed, Nov 11

4:05 pm - 10:05 pmBWI Baltimore/Washington-ONT Ontario

9h 00m2 stops Memphis Houston Hobby

10:05 am - 9:50 pmONT Ontario-BWI Baltimore/Washington

8h 45m1 stop Denver Intl

$652Southwest

Sun, Nov 1 - Tue, Nov 3

10:40 am - 6:30 pmBWI Baltimore/Washington-ONT Ontario

10h 50m2 stops Albuquerque Las Vegas Harry Reid Intl

12:50 pm - 12:45 amONT Ontario-BWI Baltimore/Washington

8h 55m2 stops Phoenix Sky Harbor Intl Denver Intl

$657Southwest

Useful Info

Low season	January
High season	November
Cheapest flight	$102

Best time to beat the crowds with an average 9% drop in price.

Most popular time to fly and prices are also 5% lower on average.

Flight from Baltimore to Ontario

How does KAYAK find such low prices on flights from Maryland 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 Maryland to Ontario.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maryland to Ontario?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Maryland 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 Maryland 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 Maryland with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maryland 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 Maryland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.