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ONT - BWI

$90 Find cheap flights from Ontario to Baltimore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Baltimore departing on 5/14. 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.
1 adult
0 bags
mar 6/4
mar 6/11

Search hundreds of travel sites at once for deals on flights to Baltimore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Baltimore, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Baltimore, as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Baltimore (ONT-BWI)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Baltimore that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:03 am - 12:39 pmONT-BWI
25h 36m1 stop
8:48 pm - 7:02 amBWI-ONT
13h 14m1 stop
$179Frontier
Find Deal
mer, giu 5 - mar, giu 11
8:02 pm - 9:08 amONT-BWI
10h 06m1 stop
1:39 pm - 6:23 amBWI-ONT
19h 44m1 stop
$188Frontier
Find Deal
mer, giu 5 - gio, giu 6
12:59 am - 11:33 amONT-BWI
7h 34m1 stop
6:59 pm - 11:59 pmBWI-ONT
8h 00m1 stop
$192Frontier
Find Deal
dom, mag 26 - sab, giu 1
8:03 am - 12:39 pmONT-BWI
25h 36m1 stop
3:20 pm - 9:38 pmBWI-ONT
9h 18m2 stops
$193Frontier
Find Deal
mer, giu 5 - gio, giu 6
12:59 am - 11:33 amONT-BWI
7h 34m1 stop
9:47 pm - 6:14 amBWI-ONT
11h 27m1 stop
$194Frontier
Find Deal
dom, mag 26 - mer, mag 29
1:15 pm - 11:33 amONT-BWI
19h 18m1 stop
7:09 pm - 7:03 amBWI-ONT
14h 54m2 stops
$197Frontier
Find Deal
gio, mag 30 - mer, giu 5
8:02 pm - 9:08 amONT-BWI
10h 06m1 stop
8:48 pm - 7:02 amBWI-ONT
13h 14m1 stop
$200Frontier
Find Deal
mer, giu 5 - mar, giu 18
8:03 am - 12:39 pmONT-BWI
25h 36m1 stop
8:48 pm - 7:02 amBWI-ONT
13h 14m1 stop
$202Frontier
Find Deal
mer, giu 12 - mar, giu 18
7:16 am - 11:29 amONT-BWI
25h 13m1 stop
6:46 pm - 11:59 pmBWI-ONT
8h 13m1 stop
$206Frontier
Find Deal
mar, mag 14 - sab, mag 18
12:45 pm - 10:47 pmONT-BWI
7h 02m1 stop
6:07 pm - 10:00 pmBWI-ONT
6h 53m1 stop
$406American Airlines
Find Deal
sab, set 7 - mar, set 10

Flights from Ontario to Baltimore - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Baltimore to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Ontario to Baltimore?

The average price of all flights from Ontario to Baltimore clicked on KAYAK for each day over the last 12 months.
For Ontario to Baltimore, Saturday is the cheapest day to fly on average and Monday is the most expensive. Flying from Baltimore back to Ontario, the best deals are generally found on Wednesday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Baltimore, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Baltimore is January, where tickets cost $207 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $410 and $401 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Baltimore, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Baltimore, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 33 days before departure.

Which airlines provide the cheapest flights from Ontario to Baltimore?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Ontario to Baltimore found on KAYAK was with Frontier for $90. Frontier proposed a round-trip connection from $179 and American Airlines from $406.

Good to know

Low season

March

High season

June

Cheapest flight

$90
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly with an average 44% increase in price.
Flight from Ontario to Baltimore

When to book flights from Ontario to Baltimore

Are your dates flexible? Find out the best times to travel from Ontario to Baltimore based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Baltimore

  • What is the cheapest flight from Ontario to Baltimore?

    In the last 3 days, the lowest price for a flight from Ontario to Baltimore was $90 for a one-way ticket and $179 for a round-trip.

  • Do I need a passport to fly between Ontario and Baltimore?

    No, a passport isn't needed to fly from Ontario to Baltimore. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Baltimore?

    Ontario airport is called Ontario and the only airport in Baltimore is Baltimore/Washington.

  • Which aircraft models fly most regularly from Ontario to Baltimore?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Baltimore?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Baltimore, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Baltimore, Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Baltimore are Delta and American Airlines. With an average price for the route of $529 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $566 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Ontario to Baltimore?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Baltimore.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Baltimore?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Baltimore from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Baltimore?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Baltimore with an airline and back to Ontario with another airline. Booking your flights between Ontario and BWI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Baltimore?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Baltimore from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Ontario to Baltimore

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Baltimore. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Baltimore? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10838 reviews
8.0Entertainment
7.9Comfort
7.4Food
8.2Boarding
8.6Crew
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

Service was good for such a short flight. Small plane but smooth flight.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

the head jack on my seat didn't work and the power outlet didn't work for my seat

Left 2 hours later for delayed I had to take care a kid with special need since people don’t want to move to accommodate the rest of the family. . It wasn’t bad but that made me upset that people can be that selfish.

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Flight From PHX to CVG was on time, very professional staff

Flight was delayed and missed connecting flight. Did not give warning about delay until we showed up at the airport. Not good.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

They seemingly have no respect for their customers, on any level. Avoid flying spirit, they will bump you to another flight without thinking twice so they can sell your seat, no joke.

Kayak does not know that spirit airlines charged me $70 to fly. But the bag check-in was $89 each way. This is false advertising to lure people. Spirit airlines sends bunch of emails after flight purchases to buy wifi, better seats, priority boarding, secure reserved seats. This is false advertising. Up front pricing. I would of flown jet blue or Alaska airlines.

One hour late taking off. Concerning, very hard landing. Uncomfortable seats with no recline. Extremely slow baggage claim. Very professional, knowledgeable flight attendants. Brand new, very clean plane.

Can’t say there was anything I particularly liked. Seats were very tight, leather wrapped plastic. I followed up a much longer and cheaper trip from Honolulu on southwest, everything was phenomenal, this flight was the exact opposite. Blows my mind they charge for water of all things. One of the attendants seemed very rude, I watched a taller gentleman a couple rows forward with his knees pressed into the back of the seat ahead, while the woman in that seat leaned forward the entire flight, I’m sure because she could feel his knees. I’ll be avoiding spirit like the plague from here forward.

Didn’t make the connecting flight due to a delay on our first flight.

I felt scam to have to pay $50 additional for my carry on luggage which was free for my other airline.

Enjoyed the experience, on time flights, friendly staff the WiFi was intros d kept cutting out.

Awful experience. Both flights were delayed several times with weather but also crew members being the official cause. The vouchers are unusable and insufficient ($50 voucher to fly the same crappy airline is a joke for putting me on a red-eye that landed at 3:00 am). The aircrafts were old and uncomfortable (have a real pocket on the seat, for crying out loud!).

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Terrible. Seats are bad and the baggage policy is inconsistent

Better than I expected but I did pay for a seat and carry on bags ahead of time.

30 minute delay due to boarding and settling of a family.

I hope to avoid flying with them in the future. First flight got cancelled then got stuck with a 13 hour layover in Denver. The process was long and frustrating to many people.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

Book cheap flights from Ontario to Baltimore

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Baltimore found on KAYAK in the last 72 hours.
5/14mar
1 stopFrontier
7h 30mONT-BWI
$90
8/23ven
1 stopFrontier
8h 14mONT-BWI
$94
5/31ven
1 stopDelta
7h 18mONT-BWI
$204
8/28mer
1 stopDelta
7h 08mONT-BWI
$206
8/26lun
1 stopAmerican Airlines
7h 10mONT-BWI
$223
5/29mer
1 stopAlaska Airlines
10h 19mONT-BWI
$224
6/3lun
1 stopAlaska Airlines
30h 31mONT-BWI
$247
7/10mer
1 stopUnited Airlines
7h 03mONT-BWI
$254
6/1sab
1 stopUnited Airlines
20h 55mONT-BWI
$259
8/11dom
2 stopsAmerican Airlines
10h 22mONT-BWI
$263

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Last minute flights from Ontario to Baltimore

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Baltimore that are departing in the next 10 days.
5/9gio
multi-stopFrontier
7h 33mONT-BWI
5/22mer
multi-stopFrontier
11h 30mBWI-ONT
$233
5/9gio
multi-stopFrontier
25h 13mONT-BWI
5/13lun
multi-stopFrontier
20h 26mBWI-ONT
$244
5/9gio
multi-stopFrontier
7h 33mONT-BWI
5/15mer
multi-stopFrontier
14h 30mBWI-ONT
$245
5/6lun
multi-stop
9h 50mONT-BWI
5/9gio
multi-stop
7h 59mBWI-ONT
$562
5/8mer
multi-stopAmerican Airlines
7h 35mONT-BWI
5/18sab
multi-stopAmerican Airlines
7h 23mBWI-ONT
$652
5/8mer
multi-stopDelta
8h 58mONT-BWI
5/18sab
multi-stopDelta
8h 47mBWI-ONT
$659
5/6lun
multi-stopDelta
7h 12mONT-BWI
5/8mer
multi-stopDelta
7h 35mBWI-ONT
$752
5/5dom
multi-stopAmerican Airlines
10h 20mONT-BWI
5/11sab
multi-stopAmerican Airlines
10h 50mBWI-ONT
$760
5/7mar
multi-stopUnited Airlines
6h 24mONT-BWI
5/11sab
multi-stopUnited Airlines
17h 33mBWI-ONT
$762
5/8mer
multi-stopUnited Airlines
6h 24mONT-BWI
5/16gio
multi-stopUnited Airlines
13h 38mBWI-ONT
$827

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Ontario - Baltimore Flights

Departure:

Ontario (ONT)United States

Destination:

Baltimore (BWI)United States

Return flight deals:

Baltimore - Ontario

Cabin classes: