Cheap flights from Ontario to Washington, D.C. from $104
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Washington, D.C. departing on 6/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Ontario to Washington, D.C.
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Frontier flights from Ontario to Baltimore
Our best Frontier deals on Ontario to Baltimore flight tickets
Southwest flights from Ontario to Baltimore
Our best Southwest deals on Ontario to Baltimore flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Ontario to Baltimore
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Baltimore?
If you’re not able to fly to Baltimore in August, then April is your next best option. Flight prices from Ontario to Baltimore during April average around $402.
What is the cheapest day to depart on your flight to Baltimore?
The cheapest day to depart from Ontario to Baltimore is on a Tuesday. Travelers who choose to depart for Baltimore on a Tuesday will often find tickets for as low as $278. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $383. These prices are subject to change though, so be sure to set up a Price Alert for flights to Baltimore.
What is the cheapest time of day to depart on your flight to Baltimore?
Flying to Baltimore from Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as $184 when looking at flights departing at noon. Flights in the afternoon are often more expensive with an average ticket price of $445.
What is the cheapest Ontario to Baltimore/Washington flight route?
Fly from Ontario to Baltimore/Washington for the best Ontario - Baltimore/Washington flight prices
How far in advance should I book a flight to Baltimore?
You are more likely to see cheaper flights to Baltimore from Ontario when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to Baltimore for around $440 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Baltimore from Ontario for as low as $370 on momondo.
What cabin class options are available on Ontario to Baltimore/Washington flights?
There are 1 cabin classes available to choose from on Ontario to Baltimore/Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Ontario to Baltimore/Washington?
Frontier, Alaska Airlines, and Delta are the most popular carriers operating from Ontario to Baltimore/Washington
What airlines fly to Baltimore?
United Airlines, American Airlines and Spirit Airlines are the top three most popular airlines that fly to Baltimore from Ontario according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Baltimore. Keep in mind that there are 9 different airlines that fly to Baltimore on a routine basis, so you have a few additional options to choose from.
When to book flights from Ontario to Baltimore
Cheap Ontario to Baltimore (ONT to BWI) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Baltimore
Best Price Found | $104 |
|---|---|
Fastest flight time | 4h 50m |
Direct flights | Mon, Tue, Wed, Thu, Sat and Sun |
Airports in Baltimore | 1 airport |
How far is Ontario to Baltimore/Washington by plane?
The straight-line distance from Ontario to Baltimore/Washington is 2281.3 mi. In terms of flight time, this usually takes a little over 4h 50m.
When did momondo last update prices for flights from Ontario Airport to Baltimore/Washington Airport?
Prices for flights from Ontario Airport to Baltimore/Washington Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Baltimore/Washington Airport?
As of May 2025, there are 6 operators available to choose from for flights from Ontario Airport to Baltimore/Washington Airport.
How old do you have to be to fly from Ontario Airport to Baltimore/Washington Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Baltimore/Washington Airport.
What documentation or ID do you need to fly to Baltimore/Washington Airport?
The required travel and health documents for your Baltimore/Washington Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Baltimore/Washington Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Baltimore?
Based on momondo bookings for flights between Ontario and Baltimore, the leading plane model is Boeing 737 MAX 8, making up 21.70% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 16.04%, Boeing 737 MAX 9 with 13.21%, and Airbus A320neo with 9.43%.
What is the most popular airline from Ontario to Baltimore?
Based on momondo bookings for flights between Ontario and Baltimore, the leading airline is Southwest, making up 35% of the total bookings. Other popular airlines include Delta with 20%, American Airlines with 17%, and Frontier with 13%.
Best airlines flying from Ontario to Baltimore
Compare and see reviews for airlines that fly from Ontario to Baltimore with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $121 | Free Cancellation | Rating 6.3 7,963 reviews | |||
| PriceFrom $148 | Free Cancellation | Rating 5.9 3,287 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $296 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $311 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $326 | Free Cancellation | Rating 8.0 4,293 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to Baltimore?
Finding the right flight to Baltimore from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Baltimore quick and easy, saving you time and money.
Can I find flights from Ontario to Baltimore with flexible booking policies on momondo?
momondo does allow users to show only those flights to Baltimore from Ontario which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Ontario to Baltimore?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Baltimore.
I’m not ready to book a flight from Ontario to Baltimore right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Ontario to Baltimore flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.