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Cheap flights from Maryland to Ontario (ONT) from $90

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BWI — ONT
May 14 — May 211
From?
To?
Tue 5/14
Tue 5/21
1 adult, Economy
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How far in advance should I book a flight from Maryland to Ontario?

To save up to 90% on this flight, we recommend booking at least 31 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Maryland to Ontario from $364 1-2 weeks out and tickets from $592 for flights departing within the next 72 hours.

What is the cheapest month to fly from Maryland to Ontario?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Ontario. Flights to Ontario from Maryland in September are about $352 on average during September, but can be found for as low as $106.

When is the cheapest time to fly from Maryland to Ontario (MD - ONT)?

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.

Cheap United Airlines flights from Maryland to Ontario

Explore cheap flight options specifically provided by United Airlines for the route between Maryland and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 9, 2024.
Take a look at some of the lowest-priced United Airlines flights heading from Maryland to Ontario. It's recommended that users confirm their flight details before booking.
Fri 11/12:15 pmIAD - ONT
1 stop10h 50mUnited Airlines
Sat 11/25:45 amONT - IAD
1 stop6h 25mUnited Airlines
Deal found 5/7$285
Thu 10/314:10 pmIAD - ONT
1 stop8h 55mUnited Airlines
Sat 11/21:00 pmONT - IAD
1 stop6h 43mUnited Airlines
Deal found 5/7$290
Wed 5/224:05 pmIAD - ONT
1 stop7h 48mUnited Airlines
Wed 5/291:50 pmONT - IAD
1 stop8h 04mUnited Airlines
Deal found 5/8$362
Mon 8/127:01 amIAD - ONT
1 stop8h 16mUnited Airlines
Mon 8/192:02 pmONT - IAD
1 stop7h 55mUnited Airlines
Deal found 5/7$390
Tue 7/27:01 amIAD - ONT
1 stop8h 14mUnited Airlines
Thu 7/116:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Deal found 5/8$414
Wed 8/77:01 amIAD - ONT
1 stop8h 14mUnited Airlines
Wed 8/146:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Deal found 5/7$419
Tue 5/214:05 pmIAD - ONT
1 stop7h 48mUnited Airlines
Sat 7/66:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Deal found 5/7$434
Sun 5/268:25 amIAD - ONT
1 stop7h 08mUnited Airlines
Sun 5/266:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Deal found 5/8$469
Wed 5/224:05 pmIAD - ONT
1 stop7h 48mUnited Airlines
Fri 5/246:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Deal found 5/7$484

Cheap American Airlines flights from Maryland to Ontario

Explore cheap flight options specifically provided by American Airlines for the route between Maryland and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 9, 2024.
Some of the lowest-priced American Airlines flights we've found at this time heading from Maryland to Ontario. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Wed 8/281:10 pmIAD - ONT
1 stop10h 11mAmerican Airlines
Wed 9/410:50 amONT - IAD
1 stop8h 51mAmerican Airlines
Deal found 5/8$296
Wed 8/281:10 pmIAD - ONT
2 stops11h 34mAmerican Airlines
Wed 9/412:45 pmONT - IAD
1 stop6h 56mAmerican Airlines
Deal found 5/8$301
Tue 7/306:00 amIAD - ONT
1 stop6h 56mAmerican Airlines
Wed 8/712:40 pmONT - IAD
1 stop7h 42mAmerican Airlines
Deal found 5/7$303
Tue 7/309:24 amIAD - ONT
2 stops11h 58mAmerican Airlines
Tue 8/610:46 amONT - IAD
1 stop9h 36mAmerican Airlines
Deal found 5/7$306
Tue 7/309:24 amIAD - ONT
2 stops11h 58mAmerican Airlines
Tue 8/64:40 pmONT - IAD
2 stops13h 04mAmerican Airlines
Deal found 5/7$310
Fri 8/161:10 pmIAD - ONT
1 stop10h 11mAmerican Airlines
Sat 8/2410:35 pmONT - IAD
1 stop7h 09mAmerican Airlines
Deal found 5/8$320
Fri 8/161:10 pmIAD - ONT
1 stop10h 11mAmerican Airlines
Sat 8/246:10 amONT - IAD
2 stops10h 33mAmerican Airlines
Deal found 5/8$325
Fri 8/169:14 amIAD - ONT
2 stops12h 13mAmerican Airlines
Sat 8/246:10 amONT - IAD
2 stops10h 33mAmerican Airlines
Deal found 5/8$330
Sun 9/85:31 pmIAD - ONT
1 stop7h 29mAmerican Airlines
Thu 9/126:32 amONT - IAD
1 stop6h 59mAmerican Airlines
Deal found 5/8$356

Cheap Maryland to Ontario flights in May & June 2024

Find cheap flight options from Maryland to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Prices were last updated on May 9, 2024.
Scroll through some of the best deals on flights from Maryland to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Fri 5/2412:59 amONT - BWI
1 stop14h 00mFrontier
Deal found 5/8$180
Wed 5/298:42 pmBWI - ONT
1 stop30h 17mFrontier
Wed 6/58:02 pmONT - BWI
1 stop10h 06mFrontier
Deal found 5/8$189
Sat 6/89:59 amBWI - ONT
1 stop11h 34mFrontier
Mon 6/1012:59 amONT - BWI
1 stop15h 46mFrontier
Deal found 5/7$190
Wed 6/57:09 pmBWI - ONT
2 stops22h 00mFrontier
Wed 6/128:03 amONT - BWI
1 stop25h 36mFrontier
Deal found 5/8$192
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Mon 6/1012:59 amONT - BWI
1 stop15h 46mFrontier
Deal found 5/8$193
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Mon 6/1712:59 amONT - BWI
1 stop15h 46mFrontier
Deal found 5/8$194
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Sun 7/712:49 amONT - BWI
1 stop8h 14mFrontier
Deal found 5/8$210
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Tue 7/912:49 amONT - BWI
1 stop8h 14mFrontier
Deal found 5/8$212
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Fri 6/712:48 amONT - BWI
1 stop12h 47mFrontier
Deal found 5/8$215

Maryland to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Maryland and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 9, 2024.
Scroll through some of the best deals on flights from Maryland to Ontario in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Fri 5/2412:59 amONT - BWI
1 stop14h 00mFrontier
Deal found 5/8$180
Wed 5/298:42 pmBWI - ONT
1 stop30h 17mFrontier
Wed 6/58:02 pmONT - BWI
1 stop10h 06mFrontier
Deal found 5/8$189
Sat 6/89:59 amBWI - ONT
1 stop11h 34mFrontier
Mon 6/1012:59 amONT - BWI
1 stop15h 46mFrontier
Deal found 5/7$190
Wed 6/57:09 pmBWI - ONT
2 stops22h 00mFrontier
Wed 6/128:03 amONT - BWI
1 stop25h 36mFrontier
Deal found 5/8$192
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Mon 6/1012:59 amONT - BWI
1 stop15h 46mFrontier
Deal found 5/8$193
Wed 8/141:03 pmBWI - ONT
1 stop13h 36mFrontier
Tue 8/201:32 pmONT - BWI
1 stop19h 31mFrontier
Deal found 5/8$194
Tue 8/206:59 pmDCA - ONT
1 stop7h 40mFrontier
Fri 8/308:27 pmONT - DCA
1 stop12h 42mFrontier
Deal found 5/8$196
Fri 8/1612:59 pmDCA - ONT
1 stop13h 40mFrontier
Fri 8/2312:49 amONT - DCA
1 stop8h 20mFrontier
Deal found 5/8$202
Sat 7/201:03 pmBWI - ONT
1 stop13h 41mFrontier
Fri 8/2312:49 amONT - BWI
1 stop8h 14mFrontier
Deal found 5/8$203

Maryland to Ontario flights leaving soon

Find last-minute flight options from Maryland to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 9, 2024.
Check out these flights departing soon from Maryland to Ontario. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Fri 5/2412:59 amONT - BWI
1 stop14h 00mFrontier
Deal found 5/8$180
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Fri 5/2412:59 amONT - BWI
1 stop14h 00mFrontier
Deal found 5/7$184
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Tue 7/912:49 amONT - BWI
1 stop8h 14mFrontier
Deal found 5/7$200
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Sun 7/712:49 amONT - BWI
1 stop8h 14mFrontier
Deal found 5/7$203
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Thu 5/3012:59 amONT - BWI
1 stop7h 34mFrontier
Deal found 5/6$206
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Tue 5/2112:59 amONT - BWI
1 stop15h 43mFrontier
Deal found 5/7$214
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Sun 5/1912:59 amONT - BWI
1 stop7h 34mFrontier
Deal found 5/8$219
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Sun 5/1912:59 amONT - BWI
1 stop7h 34mFrontier
Deal found 5/8$227
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Fri 5/318:54 pmONT - BWI
1 stop18h 05mFrontier
Deal found 5/6$229

One-way flights to Ontario from Maryland

Search for one-way flight options from Maryland to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 9, 2024.
Take a look at some of the best available options we've come across on one-way flights from Maryland to Ontario. Users can also find round-trip Maryland to Ontario flights by using the search form above.
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Deal found 5/8$90
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Deal found 5/7$91
Wed 8/211:03 pmBWI - ONT
1 stop9h 34mFrontier
Deal found 5/7$93
Wed 8/216:59 pmDCA - ONT
1 stop7h 40mFrontier
Deal found 5/7$93
Sat 6/89:59 amBWI - ONT
1 stop11h 34mFrontier
Deal found 5/7$96
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/6$99
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 5/7$101
Sat 8/171:03 pmBWI - ONT
1 stop13h 41mFrontier
Deal found 5/7$103
Wed 6/127:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 5/7$104

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 2,752,338 searches. Data last updated May 9, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$180 - $475

Route

Depart

Return

Price

Baltimore/WashingtonOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/18

1 stop8h 13m

Ontario

Fri 5/24

1 stop14h 00m

$180

Baltimore/WashingtonOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 5/18

1 stop8h 13m

Ontario

Fri 5/24

1 stop14h 00m

$184

Washington, D.C. Reagan-NationalOntario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Tue 8/20

1 stop13h 40m

Ontario

Fri 8/23

1 stop8h 20m

$186

Baltimore/WashingtonOntario

BWI - ONT

BWIONT

Baltimore/Washington

Sat 6/8

1 stop11h 34m

Ontario

Mon 6/10

1 stop15h 46m

$190

Baltimore/WashingtonOntario

BWI - ONT

BWIONT

Baltimore/Washington

Wed 6/5

2 stops18h 47m

Ontario

Wed 6/12

1 stop25h 36m

$191

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Fri 11/1

1 stop10h 50m

Ontario

Sat 11/2

1 stop6h 25m

$285

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Wed 8/28

1 stop10h 11m

Ontario

Wed 9/4

1 stop8h 51m

$296

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sat 5/25

1 stop8h 40m

Ontario

Sat 5/25

1 stop8h 43m

$300

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sun 5/26

1 stop9h 21m

Ontario

Wed 5/29

1 stop12h 19m

$475

Flights are sorted by cheapest first

Deals found on 5/8

No data available for this route at this time. Please check back soon.

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 May 9, 2024.
Get a feel of what it's like to fly with United Airlines, American Airlines 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
8.2
Very good
6,072 reviews
Check prices

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Southwest
8.2
Very good
6,072 reviews
Southwest
8.2
Very good
6,072 reviews
Check prices

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Alaska Airlines
8.1
Very good
9,141 reviews
Southwest
8.2
Very good
6,072 reviews
Check prices

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Delta
8.1
Very good
10,789 reviews
Southwest
8.2
Very good
6,072 reviews
Check prices

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Avianca
7.5
Good
3,830 reviews
Southwest
8.2
Very good
6,072 reviews
Check prices

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

United Airlines
7.4
Good
11,043 reviews
Southwest
8.2
Very good
6,072 reviews
Check prices

Food

7.3

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

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 $180, but on average you can expect to pay $198.

  • 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 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 Washington, D.C. Dulles Intl - Ontario as they are the most popular.

  • What are the most popular airlines that fly from Maryland to Ontario?

    Before booking your flight from Maryland to Ontario check out the most popular airlines for this route: American Airlines, Delta or Frontier.

  • 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 5/8.

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 5 airlines flying from Maryland to Ontario

Discover the top 5 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 2,752,338 searches. Data last updated May 9, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$122Average$177FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$150Average$254FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$206Average$409FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$277Average$569FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$305Average$505FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Search flights from Maryland to Ontario by cabin class

Find flights from Maryland to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Maryland to Ontario?

Deals for Maryland to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Maryland to Ontario?

Cheapflights simply makes it quick and affordable to book flights from Maryland to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Maryland to Ontario with no change fees?

Yes, we can. To see specific flights from Maryland to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Maryland to Ontario become cheaper?

Yes! Start tracking prices for Maryland to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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