How many flights depart from Ontario to Maryland on average per week?

7 flights are operational weekly from Ontario to Maryland as of June 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

What is the cheapest airline that flies from Ontario to Maryland?

Frontier, United Airlines, and Delta are the most popular carriers operating from Ontario to Maryland

How many flights depart from Ontario to Maryland on average per day?

The number of flights available between Ontario and Maryland is 1 per day as of June 2026. The most frequent departure time is 9:00PM, with 100% of daily flights leaving in the evening.

What airlines fly to Maryland?

Southwest, United Airlines and Frontier are the top three most popular airlines that fly to Maryland from Ontario according to our data. Southwest is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Maryland. Keep in mind that there are 7 different airlines that fly to Maryland on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Maryland?

Prices for flights from Ontario Airport to Maryland were last updated today.

How many operators does momondo search for flights from Ontario Airport to Maryland?

As of June 2026, there are 5 operators available to choose from for flights from Ontario Airport to Maryland.

How old do you have to be to fly from Ontario Airport to Maryland?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Maryland.

What documentation or ID do you need to fly to Maryland?

The travel and health documents required for your trip to Maryland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Maryland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$105 Cheap Flights from Ontario to Maryland in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Maryland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:36 am - 8:39 pm

ONT

BWI

8h 03m

1 stop

1:24 pm - 7:01 pm

BWI

ONT

8h 37m

1 stop

$240Frontier

Wed, Aug 12 - Wed, Aug 19

9:36 am - 8:39 pm

ONT

BWI

8h 03m

1 stop

1:24 pm - 7:01 pm

BWI

ONT

8h 37m

1 stop

$241Frontier

Sat, Aug 15 - Sat, Aug 22

9:32 am - 8:36 pm

ONT

BWI

8h 04m

1 stop

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

$242Frontier

Wed, Jul 15 - Sat, Jul 25

9:32 am - 8:36 pm

ONT

BWI

8h 04m

1 stop

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

$243Frontier

Mon, Jul 20 - Wed, Jul 29

9:32 am - 8:36 pm

ONT

BWI

8h 04m

1 stop

4:44 pm - 7:32 am

BWI

ONT

17h 48m

1 stop

$244Frontier

Sat, Jul 25 - Wed, Jul 29

10:49 am - 2:26 pm

ONT

IAD

48h 37m

2 stops

9:50 am - 3:14 pm

IAD

ONT

8h 24m

1 stop

$303Multiple Airlines

Wed, Jul 29 - Wed, Aug 12

6:15 am - 9:02 pm

ONT

SBY

11h 47m

2 stops

6:41 am - 1:25 pm

SBY

ONT

9h 44m

2 stops

$604American Airlines

Wed, Sep 16 - Wed, Sep 23

7:15 pm - 10:58 am

ONT

SBY

12h 43m

2 stops

6:41 am - 3:19 pm

SBY

ONT

11h 38m

2 stops

$725American Airlines

Thu, Jul 30 - Thu, Aug 6

7:15 pm - 10:58 am

ONT

SBY

12h 43m

2 stops

4:33 pm - 10:34 pm

SBY

ONT

9h 01m

1 stop

$812American Airlines

Thu, Jul 23 - Mon, Jul 27

7:15 pm - 10:58 am

ONT

SBY

12h 43m

2 stops

4:33 pm - 11:59 pm

SBY

ONT

10h 26m

2 stops

$817American Airlines

Thu, Jul 23 - Mon, Jul 27

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Frontier flights from Ontario to Maryland

Our best Frontier deals on Ontario to Maryland flight tickets

Frontier

Aug 12

ONT9:36 amOntario

8h 03m

1 stop

BWI8:39 pmBaltimore/Washington

Aug 19

BWI1:24 pmBaltimore/Washington

8h 37m

1 stop

ONT7:01 pmOntario

$240

Frontier

Aug 15

ONT9:36 amOntario

8h 03m

1 stop

BWI8:39 pmBaltimore/Washington

Aug 22

BWI1:24 pmBaltimore/Washington

8h 37m

1 stop

ONT7:01 pmOntario

$241

Frontier

Jul 15

ONT9:32 amOntario

8h 04m

1 stop

BWI8:36 pmBaltimore/Washington

Jul 25

BWI4:44 pmBaltimore/Washington

17h 48m

1 stop

ONT7:32 amOntario

$242

Southwest flights from Ontario to Maryland

Our best Southwest deals on Ontario to Maryland flight tickets

Southwest

Aug 4

ONT6:25 pmOntario

9h 10m

1 stop

BWI6:35 amBaltimore/Washington

Aug 25

BWI6:30 amBaltimore/Washington

9h 00m

2 stops

ONT12:30 pmOntario

$344

Southwest

Jun 30

ONT5:15 amOntario

9h 45m

2 stops

PHL6:00 pmPhiladelphia

Jul 4

PHL5:00 amPhiladelphia

10h 45m

2 stops

ONT12:45 pmOntario

$421

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Wed 8/12

9:36 am-8:39 pm

1 stop8h 03m

Baltimore/Washington

Wed 8/19

1:24 pm-7:01 pm

1 stop8h 37m

$240

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Sat 8/15

9:36 am-8:39 pm

1 stop8h 03m

Baltimore/Washington

Sat 8/22

1:24 pm-7:01 pm

1 stop8h 37m

$241

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Wed 7/15

9:32 am-8:36 pm

1 stop8h 04m

Baltimore/Washington

Sat 7/25

4:44 pm-7:32 am

1 stop17h 48m

$242

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Mon 7/20

9:32 am-8:36 pm

1 stop8h 04m

Baltimore/Washington

Wed 7/29

4:44 pm-7:32 am

1 stop17h 48m

$243

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Sat 7/25

9:32 am-8:36 pm

1 stop8h 04m

Baltimore/Washington

Wed 7/29

4:44 pm-7:32 am

1 stop17h 48m

$244

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Wed 7/29

10:49 am-2:26 pm

2 stops48h 37m

Washington, D.C. Dulles Intl

Wed 8/12

9:50 am-3:14 pm

1 stop8h 24m

$303

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Wed 9/16

6:15 am-9:02 pm

2 stops11h 47m

Salisbury-Ocean City

Wed 9/23

6:41 am-1:25 pm

2 stops9h 44m

$604

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Thu 7/30

7:15 pm-10:58 am

2 stops12h 43m

Salisbury-Ocean City

Thu 8/6

6:41 am-3:19 pm

2 stops11h 38m

$725

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Thu 7/23

7:15 pm-10:58 am

2 stops12h 43m

Salisbury-Ocean City

Mon 7/27

4:33 pm-10:34 pm

1 stop9h 01m

$812

OntarioSalisbury

ONT - SBY

ONTSBY

Ontario

Thu 7/23

7:15 pm-10:58 am

2 stops12h 43m

Salisbury-Ocean City

Mon 7/27

4:33 pm-11:59 pm

2 stops10h 26m

$817

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Maryland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Maryland?

The cheapest month to fly to Maryland from Ontario is in September. Flight prices, which tend to average around $98, are often lower during this time because this is during the off-season. If you don’t want to visit Maryland in September, then you should wait until December to fly from Ontario, when ticket prices are also cheap, with an average price of $128.

What is the cheapest Ontario to Maryland flight route?

Fly from Ontario to Baltimore/Washington for the best Ontario - Maryland flight prices

What cabin class options are available on Ontario to Maryland flights?

There is only 1 cabin class available to choose from on Ontario to Maryland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ontario to Maryland flights?

You could potentially save up to 24% on your flight if you consider stops on a Ontario to Maryland flight.

Cheap Ontario to Maryland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Maryland

Best Price Found	$188
Fastest flight time	4h 50m
Direct flights	Every day
Airports in Maryland	112 airports

The best one-way flight to Maryland from Ontario in the past 72 hours is $188. The best round-trip flight deal from Ontario to Maryland found on momondo in the last 72 hours is $497.

The fastest flight from Ontario to Maryland takes 4h 50m

Direct flights go from Ontario to Maryland every day.

There are 112 airports in Maryland. From Ontario there are direct flights to Baltimore/Washington (BWI).

Search flight deals

Frequently asked questions about flying from Ontario to Maryland

When did momondo last update prices for flights from Ontario Airport to Maryland?
Prices for flights from Ontario Airport to Maryland were last updated today.
How many operators does momondo search for flights from Ontario Airport to Maryland?
As of June 2026, there are 5 operators available to choose from for flights from Ontario Airport to Maryland.
How old do you have to be to fly from Ontario Airport to Maryland?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Maryland.
What documentation or ID do you need to fly to Maryland?
The travel and health documents required for your trip to Maryland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Maryland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ontario to Maryland?
momondo data reveals that the most frequently booked plane model on the route from Ontario to Maryland is Boeing 737 MAX 8, representing 23.47% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 14.29%, Airbus A318/A319/A320/A321 at 13.27%, and Airbus A321neo at 8.16%.

Best airlines flying from Ontario to Maryland

Compare and see reviews for airlines that fly from Ontario to Maryland with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $183	Free Cancellation	Rating 7.8 8,432 reviews	Search Delta flights
Frontier	PriceFrom $202	Free Cancellation	Rating 5.6 2,867 reviews	Search Frontier flights
United Airlines	PriceFrom $256	Free Cancellation	Rating 7.4 9,881 reviews	Search United Airlines flights
Southwest	PriceFrom $339	Free Cancellation	Rating 7.9 4,242 reviews	Search Southwest flights
American Airlines	PriceFrom $434	Free Cancellation	Rating 7.1 11,751 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Maryland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Maryland. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Maryland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Maryland flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Maryland?

momondo helps you find the best flight between Ontario and Maryland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Maryland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Maryland, momondo offers a useful price alert feature which will track prices for flights to Maryland from Ontario and alert you when they change.