£175 Cheap Flights from Baltimore (BWI) to Ontario Intl. Airport (ONT)

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Compare flights from Baltimore to Ontario Intl. Airport easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Baltimore to Ontario Intl. Airport. Operating between them flights per day, 5 airlines cover the route. And fly direct, getting you to Ontario Intl. Airport in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Baltimore Washington Intl. Thurgood Marshall to Ontario Intl. Airport.

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.

Grab a great deal on your flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to Ontario Intl. Airport (ONT)

The easiest way to view the best deals on flights from Baltimore to Ontario Intl. Airport today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Baltimore Washington Intl. Thurgood Marshall to Ontario Intl. Airport start at just £350 and range up to £408.

To find an even better deal, try

• being flexible on your dates – midweek flights can be cheaper
• looking for other airports near Baltimore and Ontario Intl. Airport
• booking your flight during December, the cheapest month on this route
• varying your flight times – early morning and late at night are sometimes cheaper

Why you should book your Baltimore to Ontario Intl. Airport flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Baltimore Washington Intl. Thurgood Marshall to Ontario Intl. Airport for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.

Frequently Asked Questions

How much does a flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Ontario Intl. Airport (ONT) cost?

You can find cheap one-way flights from £175 and cheap return flights £350 BWI to ONT with Expedia. One-way flights typically cost between £204 and £624, and return flights often range between £333 and £1067. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BWI to ONT ticket fares go up or down.

What is the cheapest month to fly from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT)?

The cheapest months to fly from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

Which airlines fly direct from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT)?

Enter BWI to ONT and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

What is the cheapest airline that flies from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Ontario Intl. Airport (ONT)?

Airport (ONT) starting from around £130. Airport (ONT), with tickets starting from around £278 for flights that can be booked for departure within the next year. Southwest Airlines is one of the cheapest airlines offering nonstop return flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to Ontario Intl. Frontier Airlines offers one of the cheapest connecting return flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to Ontario Intl. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

How do I find cheap flights from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT)?

To find a cheap flight from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

What is the best time to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Ontario Intl. Airport (ONT)?

The cheapest months to fly from Baltimore Washington International Thurgood Marshall (BWI) to Ontario International Airport (ONT) are typically August and September, with average return flights around £304. However, the most popular months for this route are March and May, meaning you'll find plenty of flight options during these times. If you're looking for the best balance of good fares and a wide selection of flights, consider travelling in late spring or early autumn.

What is the earliest flight from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT)?

Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.

How long does it take to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?

A nonstop flight from BWI to ONT typically takes around 5 hours 30 minutes, covering approximately 3,664 kilometers. Connecting flights on this route usually add 2 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Can you fly business or first class from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT)?

Select the "Business class" and "First class" filters when looking for Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

How do I earn miles on a Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) flight with Expedia?

It's easy to earn miles on a Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

Is it cheaper to buy a plane ticket from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) at the last minute?

Typically, booking a last minute flight from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Is it cheaper to book a Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) flight and hotel package?

Securing a Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

Can I cancel or change the date of my flight from Baltimore, MD (BWI) to Ontario Intl. Airport (ONT)?

If you booked your Baltimore, MD (BWI) to Ontario Intl. Airport (ONT) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.