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$61+ Cheap flights from Ontario (ONT) to Maryland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BWI
Nov 10 — Nov 171
Sun 11/10
Sun 11/17
1 adult, Economy
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Find flight deals from Ontario to Maryland

Cheapest flights from Ontario to Maryland
Explore the most affordable flight options available from Ontario to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2024.

This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/146:45 amONT - DCA
1 stop7h 14mFrontier
Sun 1/126:00 pmDCA - ONT
1 stop18h 40mFrontier
Deal found 11/4$170
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/215:45 amONT - BWI
1 stop26h 44mFrontier
Mon 11/252:11 pmBWI - ONT
1 stop21h 15mFrontier
Deal found 11/3$174
This Frontier deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/156:30 amONT - PHL
1 stop8h 43mFrontier
Tue 11/191:55 pmPHL - ONT
1 stop11h 22mFrontier
Deal found 11/4$214
This Trip.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/146:45 amONT - IAD
2 stops31h 11mFrontier
Tue 12/2411:34 amIAD - ONT
2 stops15h 25mFrontier
Deal found 11/4$339
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/712:05 pmONT - IAD
1 stop8h 51mDelta
Tue 12/106:00 amIAD - ONT
1 stop8h 01mDelta
Deal found 11/3$356
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:00 amONT - DCA
2 stops9h 55mDelta
Wed 12/114:00 pmDCA - ONT
2 stops11h 14mDelta
Deal found 11/5$366
This American Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/79:53 amONT - IAD
2 stops9h 31mAmerican Airlines
Sat 12/149:10 amIAD - ONT
2 stops12h 17mAmerican Airlines
Deal found 11/4$366
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1712:11 pmONT - BWI
1 stop9h 27mDelta
Tue 12/316:40 amBWI - ONT
1 stop8h 28mDelta
Deal found 11/4$371
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/712:05 pmONT - PHL
1 stop9h 50mDelta
Wed 12/115:30 amPHL - ONT
1 stop8h 31mDelta
Deal found 11/4$376
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:28 pmONT - IAD
1 stop7h 40mUnited Airlines
Tue 12/106:30 amIAD - ONT
1 stop11h 03mUnited Airlines
Deal found 11/3$376
This eDestinos deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/275:45 amONT - PHL
2 stops13h 16mMultiple Airlines
Sun 12/292:45 pmPHL - ONT
2 stops23h 15mMultiple Airlines
Deal found 11/3$385
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/610:48 amONT - IAD
1 stop10h 11mAlaska Airlines
Mon 12/93:54 pmIAD - ONT
1 stop11h 05mAlaska Airlines
Deal found 11/4$396

Find flights from Ontario to Maryland within your budget

Customize your flight search to find flights from Ontario to Maryland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,455,398 searches. Data last updated November 5, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Fri 2/21

12:49 am-12:03 pm

1 stop8h 14m

$62

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Thu 1/9

6:45 am-8:48 pm

1 stop11h 03m

$70

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sun 11/17

10:58 pm-5:24 am

1 stop27h 26m

$146

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Sat 11/23

7:30 pm-7:04 am

1 stop8h 34m

$163

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Sat 11/23

1:18 pm-11:49 pm

1 stop7h 31m

$163

OntarioBaltimore

ONT - BWI

ONTBWI

Ontario

Thu 11/28

6:00 am-5:59 pm

1 stop8h 59m

$173

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Wed 12/11

9:05 am-11:00 pm

2 stops10h 55m

$203

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Tue 12/24

5:05 am-2:59 pm

1 stop6h 54m

$213

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Sun 11/17

6:30 am-4:59 pm

1 stop7h 29m

$148

OntarioPhiladelphia

ONT - PHL

ONTPHL

Ontario

Sat 11/23

5:00 pm-5:50 am

1 stop9h 50m

$173

Flights are sorted by cheapest first

Deals found on 11/5

Showing 1-10 of 50 results
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Best time to book a flight from Ontario to Maryland

Have a flexible travel schedule? Discover the best time to fly to Maryland from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Maryland

Get recent, data-driven insights about flights from Ontario to Maryland including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to Maryland?

Currently, August is the cheapest month in which you can book a flight from Ontario to Maryland (average of $241). Flying from Ontario to Maryland in January is currently the most expensive (average of $273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to MD?

Find hourly flight availability from Ontario to Maryland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Maryland as you normally would.

Rainfall in Maryland by month

Plan your trip to Maryland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Maryland ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Maryland when rainfall is around 2.9 in.

Temperature in Maryland by month

Plan your trip to Maryland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Maryland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Maryland

Get insights into the airlines that provide service to Maryland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Maryland. Reviews last updated November 5, 2024.
Peruse reviews from past customers who have flown with Frontier, Alaska Airlines and American Airlines from Ontario to Maryland to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,082 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
5,082 reviews
Southwest
8.1
Very good
5,082 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,421 reviews
Southwest
8.1
Very good
5,082 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,829 reviews
Southwest
8.1
Very good
5,082 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,226 reviews
Southwest
8.1
Very good
5,082 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,082 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Crew

8.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Maryland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Maryland?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Maryland from Ontario.

  • Can I find flights from Ontario to Maryland for under $200 on Cheapflights?

    Yes, there are multiple flights from Ontario to Maryland for under $200. The cheapest flight booked recently is on Frontier for just $123, but on average you can expect to pay $360.

  • Are there last-minute flights available from Ontario to Maryland for under $200?

    There are currently 20+ open flights from Ontario to Maryland within the next 7 days for less than $200.

  • What are the cheapest airlines to fly from Ontario to Maryland one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $61. Users have also found prices from $163 and $163 on American Airlines and Delta, respectively.

  • What are the most popular routes from Ontario to Maryland?

    The most popular flight routes from Ontario to Maryland are Ontario - Baltimore/Washington, Ontario - Washington, D.C. Reagan-National and Ontario - Washington, D.C. Dulles Intl.

  • What does ONT to BWI mean?

    ONT stands for Ontario Airport, while BWI stands for Baltimore/Washington Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Ready for more IATA code knowledge? These are related airports for your current travel destination: Salisbury-Ocean City Airport (SBY), Hagerstown Regional Airport (HGR), Frederick Airport (FDK), Fort Meade Tipton Airport (FME).

  • Can I find deals for flights from Ontario to Maryland that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Maryland flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Maryland with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Maryland flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Maryland that include hotel bookings?

    Yes. In addition to deals on Ontario to Maryland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Maryland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Maryland.

  • Can I find deals for business class flights from Ontario to Maryland?

    Yes. Cheapflights offers flight deals from Ontario to Maryland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Maryland that allow pets onboard?

    Many airlines flying from Ontario to Maryland offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Maryland?

    Yes, you can often find last-minute deals on Ontario to Maryland flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Maryland flight deals updated?

    The Ontario to Maryland flight deals you see on this page were last updated on 11/5.

  • What is the cheapest month to book a flight from Ontario to Maryland?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Maryland (average of $241). Flying from Ontario to Maryland in January is currently the most expensive (average of $273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Ontario to Maryland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Maryland

Discover the top 6 airlines that operate flights from Ontario to Maryland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,455,398 searches. Data last updated November 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$130Average$210FlexibilityNo cancel feeOn-time65%
FrontierCheapest$138Average$285FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$254Average$553FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$286Average$406FlexibilityNo cancel feeOn-time63%
DeltaCheapest$296Average$504FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$316Average$558FlexibilityNo cancel feeOn-time71%
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