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$70+ Cheap flights from Maryland to Ontario (ONT)

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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ONT
Nov 9 — Nov 161
Sat 11/9
Sat 11/16
1 adult, Economy
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Find flight deals from Maryland to Ontario

Cheapest flights from Maryland to Ontario
Explore the most affordable flight options available from Maryland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2024.

This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/187:15 amPHL - ONT
1 stop8h 24mFrontier
Sat 1/47:00 pmONT - PHL
1 stop8h 00mFrontier
Deal found 11/3$148
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/252:11 pmBWI - ONT
1 stop12h 53mFrontier
Thu 1/212:59 amONT - BWI
1 stop9h 27mFrontier
Deal found 11/3$168
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/257:00 amDCA - ONT
1 stop7h 26mFrontier
Tue 12/3112:59 amONT - DCA
1 stop8h 09mFrontier
Deal found 11/3$186
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.
Tue 12/315:00 amDCA - ONT
1 stop7h 56mAmerican Airlines
Wed 1/810:00 amONT - DCA
1 stop7h 09mAmerican Airlines
Deal found 11/4$341
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.
Sat 11/236:23 amIAD - ONT
1 stop11h 11mUnited Airlines
Wed 12/41:40 pmONT - IAD
1 stop6h 42mUnited Airlines
Deal found 11/3$341
This Delta deal was found by Cheapflights users on 11/2. 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.
Sun 11/247:15 amBWI - ONT
1 stop7h 56mDelta
Thu 11/287:10 amONT - BWI
1 stop8h 03mDelta
Deal found 11/2$346
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.
Wed 12/116:55 amIAD - ONT
1 stop8h 30mDelta
Tue 1/71:21 pmONT - IAD
1 stop7h 15mDelta
Deal found 11/3$356
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/257:05 amBWI - ONT
1 stop9h 22mAlaska Airlines
Thu 11/286:00 amONT - BWI
1 stop8h 59mAlaska Airlines
Deal found 11/3$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.
Wed 12/118:20 amDCA - ONT
2 stops11h 34mDelta
Tue 1/76:00 amONT - DCA
2 stops9h 57mDelta
Deal found 11/4$366
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.
Mon 11/257:05 amPHL - ONT
1 stop8h 06mDelta
Tue 12/310:00 pmONT - PHL
1 stop8h 08mDelta
Deal found 11/3$381
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Thu 11/218:20 amIAD - ONT
1 stop12h 15mAlaska Airlines
Thu 11/286:00 amONT - IAD
1 stop9h 06mAlaska Airlines
Deal found 11/2$382
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/216:16 amIAD - ONT
1 stop8h 47mAmerican Airlines
Mon 11/257:30 pmONT - IAD
2 stops10h 10mAmerican Airlines
Deal found 11/3$387

Find flights from Maryland to Ontario within your budget

Customize your flight search to find flights from Maryland to Ontario 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 4, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Thu 12/12

9:53 pm-9:39 am

1 stop14h 46m

$70

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Wed 12/25

5:10 pm-10:36 pm

1 stop8h 26m

$163

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Fri 1/3

2:16 pm-8:19 pm

1 stop9h 03m

$84

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 12/31

9:19 am-6:33 pm

2 stops12h 14m

$168

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 2/18

7:00 am-4:59 pm

2 stops12h 59m

$186

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Tue 11/26

5:45 am-1:05 pm

2 stops10h 20m

$193

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 11/23

6:00 pm-8:26 am

1 stop17h 26m

$93

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sat 11/23

2:30 pm-10:23 pm

1 stop10h 53m

$213

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sun 11/24

7:15 am-4:45 pm

1 stop12h 30m

$163

BaltimoreOntario

BWI - ONT

BWIONT

Baltimore/Washington

Tue 12/31

6:40 am-12:08 pm

1 stop8h 28m

$173

Flights are sorted by cheapest first

Deals found on 11/3

Showing 1-10 of 47 results
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Best time to book a flight from Maryland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Maryland 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 Maryland to Ontario

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

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

Currently, September is the cheapest month in which you can book a flight from Maryland to Ontario (average of $236). Flying from Maryland to Ontario in December is currently the most expensive (average of $298). 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 MD to ONT?

Find hourly flight availability from Maryland to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2024.

When flying from Maryland to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated November 4, 2024.
Get a feel of what it's like to fly with Alaska Airlines, Frontier and Delta from Maryland to Ontario by reading reviews from past customers. 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
5,089 reviews

Overall

8.1

Boarding

8.3

Entertainment

7.7

Crew

8.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
5,089 reviews
Southwest
8.1
Very good
5,089 reviews

Overall

8.1

Boarding

8.3

Entertainment

7.7

Crew

8.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,423 reviews
Southwest
8.1
Very good
5,089 reviews

Overall

8.1

Boarding

8.3

Entertainment

7.7

Crew

8.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,829 reviews
Southwest
8.1
Very good
5,089 reviews

Overall

8.1

Boarding

8.3

Entertainment

7.7

Crew

8.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,226 reviews
Southwest
8.1
Very good
5,089 reviews

Overall

8.1

Boarding

8.3

Entertainment

7.7

Crew

8.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,089 reviews

Overall

8.1

Boarding

8.3

Entertainment

7.7

Crew

8.7

Comfort

8.1

Food

7.2

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from Maryland to Ontario. 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 into for flights to Ontario from Maryland?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Maryland. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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

    Yes, there are multiple flights from Maryland to Ontario for under $200. The cheapest flight booked recently is on Frontier for just $148, but on average you can expect to pay $342.

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

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

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

    The cheapest airlines for a one-way flight from Maryland to Ontario are Frontier ($70), Delta ($163), and American Airlines ($168).

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

    When deciding which route to take from Maryland to Ontario consider Washington, D.C. Reagan-National - Ontario, Baltimore/Washington - Ontario or Philadelphia - Ontario as they are the most popular.

  • What does BWI to ONT mean?

    BWI stands for Baltimore/Washington Airport, while ONT stands for Ontario 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 Maryland to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Maryland to Ontario 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 Maryland to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Maryland to Ontario 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 Maryland to Ontario that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Maryland to Ontario 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 Maryland to Ontario that allow pets onboard?

    Many airlines flying from Maryland to Ontario 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 Maryland to Ontario?

    Yes, you can often find last-minute deals on Maryland to Ontario 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 Maryland to Ontario flight deals updated?

    The Maryland to Ontario flight deals you see on this page were last updated on 11/4.

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

    Currently, September is the cheapest month in which you can book a flight from Maryland to Ontario (average of $236). Flying from Maryland to Ontario in December is currently the most expensive (average of $298). 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.

See more FAQs

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Alternative routes for Maryland to Ontario

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

Discover the top 6 airlines that operate flights from Maryland to Ontario. 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 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$198FlexibilityNo cancel feeOn-time65%
FrontierCheapest$145Average$250FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$286Average$533FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$294Average$519FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$458FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$326Average$431FlexibilityNo cancel feeOn-time63%
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