Cheap flights from Baltimore to Ontario (BWI - ONT)

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The best prices from Baltimore/Washington to Ontario are usually found in September or October, booked 24 days in advance, depart on a Monday or Tuesday and return on a Thursday

How to find the cheapest flight from
Baltimore (BWI) to Ontario (ONT)

All the information you need to plan the best BWI to ONT flight in 2022: compare Baltimore to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
BWI - ONT
Price
$276 - $643
ONT
Temperature
53.6 - 78.8 °F
ONT
Rainfall
0.1 - 3.4 inches

Popular in

May

High demand for flights, 36% potential price rise

Cheapest in

September

Best time to find cheap flights, 33% potential price drop

Round-trip from

$276

From Baltimore/Washington to Ontario

One-way from

$215

One-way flight from Baltimore/Washington to Ontario

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Baltimore to Ontario?

Users have found that flying from Baltimore to Ontario on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

September is one of the best times of the year to fly to Ontario from Baltimore. Prices for September average $349 per person but you can even find prices for as low as $147. The most expensive prices can be found in the month of May. Opting for a September flight can save you 45% on your journey compared to booking in May

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

Find a great deal and save up to 41% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Baltimore to Ontario within the next two weeks, with the cheapest ticket starting at $394.

When is the cheapest time to fly from Baltimore to Ontario (BWI - ONT)?

It’s typically best to fly out from Baltimore to Ontario at noon. Doing so could potentially save you 49% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Baltimore to Ontario in June, July 2022

The best prices found for BWI to ONT flights for June, July
19 Jul - 16 Aug
$373pp
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
BWI
Baltimore/Washington
28 Jun - 6 Jul
$376pp
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
BWI
Baltimore/Washington
28 Jun - 3 Jul
$377pp
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
BWI
Baltimore/Washington

Baltimore/Washington to Ontario 2022 flight deals

Cheap flights to Ontario from Baltimore found for this year
16 Aug - 27 Aug
$332pp
BWI
Baltimore/Washington
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
BWI
Baltimore/Washington
25 Oct - 29 Oct
$336pp
BWI
Baltimore/Washington
Delta
 
1 STOP
ONT
Ontario
ONT
Ontario
Delta
 
1 STOP
BWI
Baltimore/Washington
2 Aug - 30 Aug
$339pp
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Delta
 
1 STOP
BWI
Baltimore/Washington

Last minute flights from Baltimore to Ontario

Late deals on round-trip flights to Ontario from Baltimore, departing today and this week
3 Jul - 4 Jul
$433pp
BWI
Baltimore/Washington
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
 
1 STOP
BWI
Baltimore/Washington
3 Jul - 4 Jul
$436pp
BWI
Baltimore/Washington
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
BWI
Baltimore/Washington
2 Jul - 7 Jul
$445pp
BWI
Baltimore/Washington
Multiple Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
BWI
Baltimore/Washington

One-way flights to Ontario from Baltimore

The cheapest one-way flights from Baltimore to Ontario
4:12 am - 8:56 am
United Airlines
1 Stop
7h 44m
BWI - ONT
United Airlines
$215
United
3:40 am - 12:07 pm
American Airlines
2 Stops
11h 27m
BWI - ONT
American Airlines
3:55 pm - 3:09 am
Multiple Airlines
1 Stop
14h 14m
BWI - ONT
Multiple Airlines
$235
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Baltimore</span> to <span class="emphasized">Ontario</span> flights.

Flight FAQs

From Baltimore to Ontario

Which airlines flying from Baltimore/Washington to Ontario have flexible cancellations due to COVID-19?

American Airlines, Delta, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Baltimore to Ontario for under $400 on Cheapflights?

Yes, there are multiple flights from Baltimore to Ontario for under $400. The cheapest flight booked recently is on Frontier for just $332, but on average you can expect to pay $358.

Are there last-minute flights available from Baltimore to Ontario for under $500?

There are currently 20+ open flights from Baltimore to Ontario within the next 7 days for less than $500.

How popular is this Baltimore to Ontario flight route?

Flights from Baltimore/Washington to Ontario have been viewed 15 times in the past calendar month.

What are the cheapest airlines flying from Baltimore to Ontario round-trip?

Cheapflights users have booked flights from Baltimore to Ontario round-trip from $332. Another airline that can offer you cheap pricing is Delta. Frontier is priced at 19% lower than the current average price of a flight leaving 3 months from now.

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

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $167. Delta flights start at $168 while deals on Frontier start at $179 one-way.

What are the cheapest flights from Baltimore to Ontario?

While on average a flight from Baltimore to Ontario is generally $776, our data shows the cheapest flight currently is $86. When looking at the most popular route, (Baltimore/Washington - Ontario), you can expect to pay $336 for that flight.

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

Consider Major Airline, American Airlines or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from Baltimore to Ontario.

COVID Restrictions

View COVID Travel Restrictions for Ontario, CA

Do I need a COVID test to fly to Ontario from Baltimore?

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from Baltimore/Washington need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from Baltimore/Washington are not required to present a negative COVID-19 PCR test or antigen result upon entering Ontario.

Quarantine requirements
Visitors from Baltimore/Washington are not required to quarantine after entering Ontario.

Do I need a test to fly back to Baltimore from Ontario?

Returning to Baltimore/Washington from Ontario

COVID-19 testing requirements
Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering Baltimore/Washington.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Baltimore/Washington.

Hide COVID Travel Restrictions for Ontario, CA

Alternative routes for Baltimore to Ontario

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

Destination information for Ontario

Things to know before you go - useful duration and weather info for your trip from Baltimore to Ontario.

Airports servicing Baltimore

Airports servicing Ontario

Top 6 airlines flying from Baltimore/Washington to Ontario

The chart below displays the airlines Cheapflights users traveling from Baltimore to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$86 $306 No cancel fee 62%
Delta
$201 $752 No cancel fee N/A
Alaska Airlines
$208 $719 No cancel fee 75%
United Airlines
$214 $496 No cancel fee 69%
American Airlines
$239 $563 No cancel fee 71%
Spirit Airlines
$284 $500 No cancel fee 65%

Hourly flight availability from Baltimore to Ontario

See what time of day planes typically take off from Baltimore towards Ontario.
Early morning Midnight to 6 AM 100% of BWI to ONT departures
Morning 6 AM to noon 0% of BWI to ONT departures
Afternoon Noon to 6 PM 0% of BWI to ONT departures
Evening 6 PM to midnight 0% of BWI to ONT departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Baltimore to Ontario
See how many times per day planes take to the skies headed from Baltimore to Ontario.
Sunday
1 daily flight
Monday
1 daily flight
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
1 daily flight
Friday
1 daily flight
Saturday
0 flights
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