What is the cheapest airline to fly from Ontario to Baltimore round-trip?

Our cheapest airline available from Ontario to Baltimore is Frontier. Our recent data shows that you can find tickets from as low as $177 on this airline. This flight start at 59% lower than the current average price 3 months from now.

How recently were the Ontario to Baltimore flight deals updated?

The Ontario to Baltimore flight deals you see on this page were last updated on 6/2.

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

Currently, December is the cheapest month in which you can book a flight from Ontario to Baltimore (average of $238). Flying from Ontario to Baltimore in July is currently the most expensive (average of $288). 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 are the most popular airlines that fly from Ontario to Baltimore?

American Airlines, Delta and Frontier are the most popular airlines when flying from Ontario to Baltimore.

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

Yes, there are multiple flights from Ontario to Baltimore for under $200. The cheapest flight booked recently is on Frontier for just $177, but on average you can expect to pay $213.

Are there last-minute flights available from Ontario to Baltimore for under $300?

There are currently 20+ open flights from Ontario to Baltimore within the next 7 days for less than $300.

What does ONT to BWI mean?

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Baltimore/Washington Airport flight would often be abbreviated as a ONT to BWI flight.

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

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

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

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

How can I find direct flights from Ontario to Baltimore?

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

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

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

Many airlines flying from Ontario to Baltimore 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 Baltimore?

Yes, you can often find last-minute deals on Ontario to Baltimore 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.

Flights from Ontario, CA to Baltimore, MD from $90

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The best prices from Ontario to Baltimore/Washington are usually found in September or February, booked 65 days in advance, depart on a Saturday or Friday and return on a Wednesday

Cheap flight deals from Ontario to Baltimore

Popular in	June
Cheapest in	September
Round-trip from	$236
One-way from	$90

High demand for flights, 31% potential price rise

Search Deals

Best time to find cheap flights, 35% potential price drop

Search Deals

From Ontario to Baltimore/Washington

Search Deals

One-way flight from Ontario to Baltimore/Washington

Search Deals

What is the cheapest day to fly round-trip from Ontario to Baltimore?

Sunday flights are found to be more expensive to fly from Ontario to Baltimore. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Baltimore.

How far in advance should I book a flight from Ontario to Baltimore?

To save on the cost of your flight from Ontario to Baltimore, book at least 29 days before your planned departure. Booking around this time can save you about 62% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $376 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $594.

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

Flights from Ontario to Baltimore lean towards being more expensive in June. Prices are generally better when you fly from Ontario to Baltimore in September, with the cheapest ticket starting at $109.

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

One of the essential ways to save on airfare from Ontario to Baltimore is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 35% on airfare.

Cheap American Airlines flights from Ontario to Baltimore

Consider these cheap American Airlines flights we've found departing from Ontario to Baltimore. Be sure to come back soon if the deals available don't appeal to you at this time.

Sat 9/710:40 pmONT - BWI

1 stop7h 02mAmerican Airlines

Tue 9/106:51 amBWI - ONT

1 stop8h 04mAmerican Airlines

Deal found 6/1$376

Sat 9/2810:40 pmONT - BWI

1 stop7h 02mAmerican Airlines

Tue 10/19:40 amBWI - ONT

2 stops11h 47mAmerican Airlines

Deal found 5/31$378

Wed 10/97:25 pmONT - BWI

2 stops10h 07mAmerican Airlines

Mon 10/216:07 pmBWI - ONT

1 stop6h 53mAmerican Airlines

Deal found 6/1$381

Sun 8/1110:30 pmONT - BWI

1 stop7h 15mAmerican Airlines

Fri 8/161:36 pmBWI - ONT

1 stop8h 12mAmerican Airlines

Deal found 6/2$386

Fri 6/711:59 pmONT - BWI

2 stops9h 30mAmerican Airlines

Tue 7/166:02 pmBWI - ONT

1 stop7h 58mAmerican Airlines

Deal found 6/2$591

Wed 6/129:24 amONT - BWI

2 stops9h 59mAmerican Airlines

Sat 6/157:28 pmBWI - ONT

1 stop7h 31mAmerican Airlines

Deal found 6/1$636

Mon 6/107:26 pmONT - BWI

2 stops10h 49mAmerican Airlines

Sat 6/157:28 pmBWI - ONT

1 stop7h 31mAmerican Airlines

Deal found 6/1$661

Fri 6/79:24 amONT - BWI

2 stops9h 08mAmerican Airlines

Tue 7/163:49 pmBWI - ONT

2 stops8h 51mAmerican Airlines

Deal found 6/2$666

Mon 6/107:26 pmONT - BWI

2 stops10h 49mAmerican Airlines

Sat 6/153:47 pmBWI - ONT

2 stops8h 53mAmerican Airlines

Deal found 6/1$708

Cheap Frontier flights from Ontario to Baltimore

Some of the best deals we've found on Frontier flights traveling from Ontario to Baltimore. Make sure to examine the flight information before completing your reservation.

Tue 8/2712:49 amONT - BWI

1 stop8h 14mFrontier

Sat 9/71:03 pmBWI - ONT

1 stop13h 41mFrontier

Deal found 6/1$177

Tue 8/2712:49 amONT - BWI

1 stop8h 14mFrontier

Wed 9/49:41 pmBWI - ONT

1 stop11h 26mFrontier

Deal found 6/1$180

Fri 8/2312:49 amONT - BWI

1 stop8h 14mFrontier

Sat 9/71:03 pmBWI - ONT

1 stop13h 41mFrontier

Deal found 6/2$182

Thu 8/226:57 amONT - BWI

1 stop9h 02mFrontier

Sat 9/71:03 pmBWI - ONT

1 stop13h 41mFrontier

Deal found 6/2$184

Sat 6/159:02 pmONT - BWI

1 stop9h 06mFrontier

Mon 6/179:31 pmBWI - ONT

1 stop11h 43mFrontier

Deal found 6/2$210

Sat 6/159:02 pmONT - BWI

1 stop9h 06mFrontier

Tue 7/28:48 pmBWI - ONT

1 stop13h 24mFrontier

Deal found 6/1$212

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Tue 6/188:48 pmBWI - ONT

1 stop13h 14mFrontier

Deal found 6/1$213

Thu 9/512:49 amONT - BWI

1 stop8h 14mFrontier

Mon 9/91:03 pmBWI - ONT

1 stop13h 36mFrontier

Deal found 6/1$215

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Thu 6/203:20 pmBWI - ONT

2 stops9h 18mFrontier

Deal found 6/1$216

Cheap Ontario to Baltimore flights in June & July 2024

These are some of the best deals we've found on flights to Baltimore in 2024 at this time. More deals are always being added, so be sure to check back regularly.

Sat 6/159:02 pmONT - BWI

1 stop9h 06mFrontier

Tue 7/28:48 pmBWI - ONT

1 stop13h 24mFrontier

Deal found 6/1$212

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Tue 6/188:48 pmBWI - ONT

1 stop13h 14mFrontier

Deal found 6/1$213

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Thu 6/203:20 pmBWI - ONT

2 stops9h 18mFrontier

Deal found 6/1$216

Sat 6/229:02 pmONT - BWI

1 stop9h 06mFrontier

Tue 6/258:48 pmBWI - ONT

1 stop13h 14mFrontier

Deal found 6/1$220

Wed 6/197:03 pmONT - BWI

1 stop11h 05mFrontier

Thu 7/41:39 pmBWI - ONT

1 stop13h 05mFrontier

Deal found 6/1$227

Wed 6/267:03 pmONT - BWI

1 stop11h 05mFrontier

Thu 7/41:39 pmBWI - ONT

1 stop13h 05mFrontier

Deal found 6/2$228

Wed 6/197:03 pmONT - BWI

1 stop11h 05mFrontier

Tue 7/98:54 pmBWI - ONT

1 stop29h 45mFrontier

Deal found 6/2$229

Wed 6/197:03 pmONT - BWI

1 stop11h 05mFrontier

Thu 7/43:20 pmBWI - ONT

2 stops9h 18mFrontier

Deal found 6/1$232

Wed 6/197:03 pmONT - BWI

1 stop11h 05mFrontier

Mon 7/19:33 pmBWI - ONT

1 stop11h 41mFrontier

Deal found 6/1$233

Ontario to Baltimore 2024 flight deals

These are some of the best deals we've found on flights to Baltimore in 2024 at this time. More deals are always being added, so be sure to check back regularly.

Tue 8/2712:49 amONT - BWI

1 stop8h 14mFrontier

Sat 9/71:03 pmBWI - ONT

1 stop13h 41mFrontier

Deal found 6/1$177

Tue 8/2712:49 amONT - BWI

1 stop8h 14mFrontier

Wed 9/49:41 pmBWI - ONT

1 stop11h 26mFrontier

Deal found 6/1$180

Fri 8/2312:49 amONT - BWI

1 stop8h 14mFrontier

Sat 9/71:03 pmBWI - ONT

1 stop13h 41mFrontier

Deal found 6/2$182

Thu 8/226:57 amONT - BWI

1 stop9h 02mFrontier

Sat 9/71:03 pmBWI - ONT

1 stop13h 41mFrontier

Deal found 6/2$184

Tue 9/31:32 pmONT - BWI

1 stop19h 31mFrontier

Wed 9/111:03 pmBWI - ONT

1 stop9h 34mFrontier

Deal found 6/2$190

Thu 8/2212:49 amONT - BWI

1 stop8h 14mFrontier

Mon 8/261:03 pmBWI - ONT

1 stop13h 36mFrontier

Deal found 6/1$210

Sat 6/159:02 pmONT - BWI

1 stop9h 06mFrontier

Tue 7/28:48 pmBWI - ONT

1 stop13h 24mFrontier

Deal found 6/1$212

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Tue 6/188:48 pmBWI - ONT

1 stop13h 14mFrontier

Deal found 6/1$213

Thu 9/512:49 amONT - BWI

1 stop8h 14mFrontier

Mon 9/91:03 pmBWI - ONT

1 stop13h 36mFrontier

Deal found 6/1$215

Ontario to Baltimore flights leaving soon

Check out these flights departing soon from Ontario to Baltimore. It's wise to confirm all flight details are correct before booking.

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Tue 6/188:48 pmBWI - ONT

1 stop13h 14mFrontier

Deal found 6/1$213

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Thu 6/203:20 pmBWI - ONT

2 stops9h 18mFrontier

Deal found 6/1$216

Mon 6/1012:59 amONT - BWI

1 stop15h 46mFrontier

Tue 6/258:48 pmBWI - ONT

1 stop13h 14mFrontier

Deal found 6/2$239

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Mon 6/179:31 pmBWI - ONT

1 stop11h 43mFrontier

Deal found 6/1$248

Sat 6/87:24 pmONT - BWI

1 stop10h 44mFrontier

Mon 6/107:09 pmBWI - ONT

2 stops16h 50mFrontier

Deal found 6/1$250

Mon 6/1012:59 amONT - BWI

1 stop15h 46mFrontier

Mon 6/179:31 pmBWI - ONT

1 stop11h 43mFrontier

Deal found 6/2$251

Mon 6/109:36 pmONT - BWI

1 stop19h 09mFrontier

Sat 6/225:37 pmBWI - ONT

1 stop9h 22mFrontier

Deal found 5/31$252

Wed 6/128:02 pmONT - BWI

1 stop10h 06mFrontier

Mon 6/179:31 pmBWI - ONT

1 stop11h 43mFrontier

Deal found 6/2$253

Sat 6/87:24 pmONT - BWI

1 stop10h 44mFrontier

Mon 6/107:09 pmBWI - ONT

2 stops22h 45mFrontier

Deal found 6/1$254

One-way flights to Baltimore from Ontario

Take a look at some of the one-way flights we've detected from Ontario to Baltimore. Those seeking round-trip flights from Ontario to Baltimore should utilize the search form at the the top of the page.

Wed 6/1212:49 amONT - BWI

1 stop8h 50mFrontier

Deal found 6/1$90

Tue 9/2412:49 amONT - BWI

1 stop8h 14mFrontier

Deal found 5/31$94

Thu 9/56:57 amONT - BWI

1 stop9h 02mFrontier

Deal found 6/1$95

Tue 8/201:32 pmONT - BWI

1 stop19h 31mFrontier

Deal found 6/1$100

Sat 6/87:24 pmONT - BWI

1 stop10h 44mFrontier

Deal found 6/1$101

Sat 6/229:02 pmONT - BWI

1 stop9h 06mFrontier

Deal found 6/1$110

Tue 7/98:27 amONT - BWI

1 stop8h 24mFrontier

Deal found 6/1$114

Wed 7/37:03 pmONT - BWI

1 stop11h 08mFrontier

Deal found 6/1$116

Wed 7/1712:49 amONT - BWI

1 stop8h 47mFrontier

Deal found 6/1$117

Find flights from Ontario to Baltimore within your budget

Fly from

Fly to

Budget

$177 - $378

Route

Depart

Return

Price

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Tue 8/27

1 stop8h 14m

Baltimore/Washington

Sat 9/7

1 stop13h 41m

$177

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Tue 8/27

1 stop8h 14m

Baltimore/Washington

Wed 9/4

1 stop11h 26m

$180

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Fri 8/23

1 stop8h 14m

Baltimore/Washington

Sat 9/7

1 stop13h 41m

$182

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Thu 8/22

1 stop9h 02m

Baltimore/Washington

Sat 9/7

1 stop13h 41m

$184

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Sat 6/15

1 stop9h 06m

Baltimore/Washington

Mon 6/17

1 stop11h 43m

$210

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Sat 6/15

1 stop9h 06m

Baltimore/Washington

Tue 7/2

1 stop13h 24m

$212

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Wed 6/12

1 stop8h 50m

Baltimore/Washington

Tue 6/18

1 stop13h 14m

$213

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Sat 9/7

1 stop7h 02m

Baltimore/Washington

Tue 9/10

1 stop8h 04m

$376

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Sat 9/28

1 stop7h 02m

Baltimore/Washington

Tue 10/1

2 stops11h 47m

$378

Flights are sorted by cheapest first

Deals found on 6/1

How far ahead should I book a flight from Ontario to Baltimore?

The best time to book flights from Ontario to Baltimore is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Search Deals

What is the cheapest day to fly from Ontario to Baltimore?

Morning

Noon

Afternoon

Evening

All times are departure.

Travelers seeking maximum savings on their Ontario to Baltimore flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Search Deals

Best time to book a flight from Ontario to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Ontario with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in Baltimore by month

WAS Temperature	35.6 - 80.6 °F

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Baltimore

See what other customers who have flown with American Airlines, Frontier and Alaska Airlines from Ontario to Baltimore have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines

8.1

Very good

9,197 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta

8.0

Very good

10,402 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines

7.4

Good

10,755 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines

7.3

Good

14,260 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Frontier

6.2

Okay

3,998 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Can I find flights from Ontario to Baltimore for under $200 on Cheapflights?
Yes, there are multiple flights from Ontario to Baltimore for under $200. The cheapest flight booked recently is on Frontier for just $177, but on average you can expect to pay $213.
Are there last-minute flights available from Ontario to Baltimore for under $300?
There are currently 20+ open flights from Ontario to Baltimore within the next 7 days for less than $300.
What is the cheapest airline to fly from Ontario to Baltimore round-trip?
Our cheapest airline available from Ontario to Baltimore is Frontier. Our recent data shows that you can find tickets from as low as $177 on this airline. This flight start at 59% lower than the current average price 3 months from now.
What does ONT to BWI mean?
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Baltimore/Washington Airport flight would often be abbreviated as a ONT to BWI flight.
Can I find deals for flights from Ontario to Baltimore that include extra baggage allowance?
The amount of baggage you can bring on your Ontario to Baltimore 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 Baltimore with specific airlines?
Yes, Cheapflights allows you to browse and filter Ontario to Baltimore 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 Baltimore that include hotel bookings?
Yes. In addition to deals on Ontario to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Baltimore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Baltimore.
Can I find deals for business class flights from Ontario to Baltimore?
Yes. Cheapflights offers flight deals from Ontario to Baltimore 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 Baltimore that allow pets onboard?
Many airlines flying from Ontario to Baltimore 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 Baltimore?
Yes, you can often find last-minute deals on Ontario to Baltimore 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 Baltimore flight deals updated?
The Ontario to Baltimore flight deals you see on this page were last updated on 6/2.
What are the most popular airlines that fly from Ontario to Baltimore?
American Airlines, Delta and Frontier are the most popular airlines when flying from Ontario to Baltimore.
What is the cheapest month to book a flight from Ontario to Baltimore?
Currently, December is the cheapest month in which you can book a flight from Ontario to Baltimore (average of $238). Flying from Ontario to Baltimore in July is currently the most expensive (average of $288). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ontario to Baltimore
See prices for flight routes from nearby airports that may be better suited for you.

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Las Vegas to Philadelphia flights

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Fresno to Dulles Intl flights

Palm Springs to Dulles Intl flights

Burbank to Reagan-National flights

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Fresno to Baltimore flights

Long Beach to Philadelphia flights

Reno to Dulles Intl flights

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Long Beach to Baltimore flights

Fresno to Reagan-National flights

Reno to Reagan-National flights

Complete your trip
Complete your trip to Baltimore by adding a car rental and/or hotel reservation to your travel itinerary.

Baltimore car rentals

Washington, D.C. Dulles Intl Airport car rentals

Baltimore/Washington Airport car rentals

Washington, D.C. Reagan-National Airport car rentals

Salisbury car rentals

Ocean City car rentals

Inner Harbor car rentals

Downtown car rentals

Fells Point car rentals

North Baltimore car rentals

West Baltimore car rentals

East Baltimore car rentals

Top 5 airlines flying from Ontario to Baltimore

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$122	Average$229	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
Frontier	Cheapest$148	Average$290	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
United Airlines	Cheapest$295	Average$680	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Delta	Cheapest$316	Average$500	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
American Airlines	Cheapest$336	Average$542	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

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Los Angeles to Beijing flights

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Ontario to Belize flights

Search flights from Ontario to Baltimore by cabin class

Weekly flight availability from Ontario to Baltimore

Sunday	2daily flights
Monday	0daily flights
Tuesday	0daily flights
Wednesday	0daily flights
Thursday	0daily flights
Friday	0daily flights
Saturday	1daily flight

Book a flight to one of these trending destinations

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Baltimore. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from Ontario to Baltimore 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 Ontario to Baltimore with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to Baltimore with no change fees.

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

Yes, Cheapflights offers price alerts on Ontario to Baltimore flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Ontario to Baltimore (ONT - BWI) 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 6/12. 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.

The best prices from Ontario to Baltimore/Washington are usually found in September or February, booked 65 days in advance, depart on a Saturday or Friday and return on a Wednesday

Cheap flight deals from Ontario to Baltimore

Popular in

Cheapest in

Round-trip from

One-way from

What is the cheapest day to fly round-trip from Ontario to Baltimore?

How far in advance should I book a flight from Ontario to Baltimore?

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

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

Cheap American Airlines flights from Ontario to Baltimore

Consider these cheap American Airlines flights we've found departing from Ontario to Baltimore. Be sure to come back soon if the deals available don't appeal to you at this time.

Cheap Frontier flights from Ontario to Baltimore

Some of the best deals we've found on Frontier flights traveling from Ontario to Baltimore. Make sure to examine the flight information before completing your reservation.

Cheap Ontario to Baltimore flights in June & July 2024

Find cheap flight options from Ontario to Baltimore specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Prices were last updated on June 2, 2024.

These are some of the best deals we've found on flights to Baltimore in 2024 at this time. More deals are always being added, so be sure to check back regularly.

Ontario to Baltimore 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Baltimore in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Data last updated June 2, 2024.

These are some of the best deals we've found on flights to Baltimore in 2024 at this time. More deals are always being added, so be sure to check back regularly.

Ontario to Baltimore flights leaving soon

Check out these flights departing soon from Ontario to Baltimore. It's wise to confirm all flight details are correct before booking.

One-way flights to Baltimore from Ontario

Take a look at some of the one-way flights we've detected from Ontario to Baltimore. Those seeking round-trip flights from Ontario to Baltimore should utilize the search form at the the top of the page.

Find flights from Ontario to Baltimore within your budget

How far ahead should I book a flight from Ontario to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Baltimore. Price data was last updated on May 24, 2024.

The best time to book flights from Ontario to Baltimore is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest day to fly from Ontario to Baltimore?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Baltimore. Price data was last updated on June 2, 2024.

Best time to book a flight from Ontario to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Ontario with our price prediction graph.

Temperature and rainfall in Baltimore by month

Plan your trip to Baltimore by taking into account the average temperature and rainfall totals by month.

Reviews of airlines servicing Baltimore

See what other customers who have flown with American Airlines, Frontier and Alaska Airlines from Ontario to Baltimore have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

Are there last-minute flights available from Ontario to Baltimore for under $300?

What is the cheapest airline to fly from Ontario to Baltimore round-trip?

What does ONT to BWI mean?

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

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

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

How can I find direct flights from Ontario to Baltimore?

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

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

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

How recently were the Ontario to Baltimore flight deals updated?

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

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

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Alternative routes for Ontario to BaltimoreSee prices for flight routes from nearby airports that may be better suited for you.

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Ontario to Baltimore

Popular flight searches

Check out other popular destinations found by fellow travelers in 2024

Search flights from Ontario to Baltimore by cabin class

Find flights from Ontario to Baltimore, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Weekly flight availability from Ontario to Baltimore

Explore weekly flight availability from Ontario to Baltimore. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 2, 2024.

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Alternative routes for Ontario to Baltimore
See prices for flight routes from nearby airports that may be better suited for you.