Find cheap flights from Ontario to Baltimore

ONT - BWI

Find cheap flights from Ontario to Baltimore

Round-trip
Economy
Ontario (ONT)
Baltimore/Washington
Sat 7/4
Sat 7/11
Any month
Compare vs. KAYAK |
Search hundreds of travel sites at once for deals on flights to Baltimore

Good to know

Low season

September Best time to beat the crowds with an average 23% drop in price.

High season

June Most popular time to fly with an average 30% increase in price.

Average price of a round-trip

$353 (avg. price over the last 2 weeks)

Good deal for a round-trip

$319 or less

When to book flights from Ontario to Baltimore

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $239 or less.
  • The cheapest flight from Ontario to Baltimore was found 77 days before departure, on average.
  • Book at least 4 weeks before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is September.
  • Morning departure is around 79% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Ontario to Baltimore flights

Are flight prices cheaper from Ontario to Baltimore because of Coronavirus (COVID-19)?

How long does a flight from Ontario to Baltimore take?

Which airlines provide the cheapest flights from Ontario to Baltimore?

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

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

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

How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?

Top airline flying Ontario to Baltimore/Washington

Scores according to KAYAK customer reviews

8.0
Delta
Overall score based on 28,423 reviews
8.2
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews
Read more about Delta

Book cheap flights from Ontario to Baltimore (round-trip)

Airports
Origin
Ontario
$243
only
$243
Destination
Baltimore
$243
only
$243
Thu, Aug 27
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 14m
Mon, Aug 31
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
11h 00m
Trip: 5 days
Based on null reviews
Thu, Aug 27
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
7h 25m
Sun, Aug 30
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
7h 45m
Trip: 4 days
Based on null reviews
Thu, Aug 27
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
35h 34m
Mon, Aug 31
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
11h 00m
Trip: 5 days
Based on null reviews
Fri, Jul 31
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
17h 51m
Mon, Aug 10
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
16h 50m
Trip: 11 days
Based on null reviews
Thu, Jul 30
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
9h 35m
Sat, Aug 8
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
10h 48m
Trip: 10 days
Based on null reviews
Fri, Sep 4
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
9h 20m
Sun, Sep 6
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
10h 45m
Trip: 3 days
Based on null reviews
Sun, Jun 28
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
17h 20m
Sat, Jul 4
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
12h 54m
Trip: 7 days
Based on null reviews
Fri, Oct 23
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
9h 36m
Sun, Oct 25
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
7h 45m
Trip: 3 days
Based on null reviews
Thu, Jul 23
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
9h 35m
Tue, Jul 28
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
7h 53m
Trip: 6 days
Based on null reviews
Wed, Jul 8
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
17h 49m
Wed, Jul 15
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
12h 02m
Trip: 8 days
Based on null reviews
Wed, Jul 22
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
9h 35m
Thu, Jul 30
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
9h 38m
Trip: 9 days
Based on null reviews
Wed, Sep 9
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
6h 51m
Tue, Sep 15
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
9h 20m
Trip: 7 days
Based on null reviews
Tue, Sep 8
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
7h 03m
Tue, Sep 15
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
8h 25m
Trip: 8 days
Based on null reviews
Fri, Jul 10
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
18h 46m
Wed, Jul 15
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
12h 02m
Trip: 6 days
Based on null reviews
Fri, Jul 10
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
7h 02m
Fri, Jul 17
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
11h 33m
Trip: 8 days
Based on null reviews
Wed, Aug 12
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
7h 31m
Thu, Sep 3
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
9h 44m
Trip: 23 days
Based on null reviews
Wed, Jun 24
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
23h 04m
Mon, Jun 29
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
30h 26m
Trip: 6 days
Based on null reviews
Fri, Jul 10
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
18h 46m
Mon, Jul 20
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
12h 43m
Trip: 11 days
Based on null reviews
Thu, Aug 13
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 34m
Thu, Sep 3
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
16h 50m
Trip: 22 days
Based on null reviews
Fri, Jul 31
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
17h 51m
Wed, Aug 5
BWI
Baltimore/Washington Airport
ONT
Ontario Airport
20h 49m
Trip: 6 days
Based on null reviews
Show more results

Book cheap flights from Ontario to Baltimore (one-way)

Airports
Origin
Ontario
$93
only
$93
Destination
Baltimore
$93
only
$93
Mon, Aug 17
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 34m
Based on null reviews
Mon, Jul 13
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
13h 40m
Based on null reviews
Sun, Aug 16
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 34m
Based on null reviews
Thu, Aug 20
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 34m
Based on null reviews
Sat, Aug 29
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 14m
Based on null reviews
Tue, Sep 8
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
7h 24m
Based on null reviews
Thu, Sep 10
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 28m
Based on null reviews
Sun, Aug 30
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
33h 07m
Based on null reviews
Sat, Jul 11
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
13h 40m
Based on null reviews
Wed, Jul 8
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
20h 47m
Based on null reviews
Mon, Jul 13
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
37h 22m
Based on null reviews
Sat, Jul 11
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
7h 04m
Based on null reviews
Tue, Sep 8
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
29h 00m
Based on null reviews
Mon, Sep 14
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 28m
Based on null reviews
Mon, Jul 20
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
35h 40m
Based on null reviews
Thu, Aug 27
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
11h 34m
Based on null reviews
Thu, Jul 30
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
42h 37m
Based on null reviews
Mon, Jun 29
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
24h 32m
Based on null reviews
Fri, Jul 10
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
17h 51m
Based on null reviews
Mon, Jul 20
ONT
Ontario Airport
BWI
Baltimore/Washington Airport
35h 40m
Based on null reviews
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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