Flights from Baltimore to Ontario

Our cheapest offers for flights from Baltimore to Ontario

Here you can compare cheap flights from Baltimore (BWI) to Ontario (ONT) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Ontario. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Baltimore
Ontario
Outbound
10/18/25
1 Stopover (DFW)
AA1213, AA0711
07h 49min
Return
11/17/25
1 Stopover (SEA)
AS0665, AS0344
10h 40min
American Airlines ?
$398
Baltimore
Ontario
Outbound
11/03/25
1 Stopover (SEA)
AS0349, AS0664
10h 42min
Return
11/12/25
1 Stopover (SEA)
AS0665, AS0344
10h 40min
Alaska Airlines ?
$399
Baltimore
Ontario
Outbound
10/10/25
1 Stopover (DFW)
AA1213, AA0711
07h 49min
Return
11/04/25
1 Stopover (SEA)
AS0665, AS0344
10h 40min
American Airlines ?
$415
Baltimore
Ontario
Outbound
10/10/25
1 Stopover (SEA)
AS0349, AS1254
31h 42min
Return
11/04/25
1 Stopover (SEA)
AS0665, AS0344
10h 40min
Alaska Airlines ?
$435
Baltimore
Ontario
Outbound
10/18/25
1 Stopover (DFW)
AA1213, AA0711
07h 49min
Return
11/17/25
1 Stopover (SEA)
AS0665, AS0344
10h 40min
American Airlines ?
$442
Baltimore
Ontario
Outbound
10/18/25
1 Stopover (DFW)
AA1213, AA0711
07h 49min
Return
11/17/25
1 Stopover (CLT)
AA1920, AA2719
06h 12min
American Airlines ?
$465
Baltimore
Ontario
Outbound
10/10/25
1 Stopover (ORD)
UA0590, UA0308
08h 10min
Return
11/04/25
1 Stopover (DEN)
UA1417, UA1841
13h 18min
United Airlines ?
$478
Baltimore
Ontario
Outbound
11/03/25
1 Stopover (SEA)
AS0379, AS0489
30h 42min
Return
11/12/25
1 Stopover (SEA)
AS0607, AS0378
08h 55min
Alaska Airlines ?
$482
Baltimore
Ontario
Outbound
11/03/25
1 Stopover (IAH)
UA2128, UA1563
18h 16min
Return
11/12/25
1 Stopover (DEN)
UA1417, UA1362
23h 06min
United Airlines ?
$493
Baltimore
Ontario
Outbound
10/18/25
1 Stopover (DFW)
AA1213, AA0711
07h 49min
Return
11/17/25
1 Stopover (SEA)
HA6372, HA6635
10h 40min
American Airlines ?
$520
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Baltimore to Ontario

Favorite airline: Frontier Airlines
40 % of flights from Baltimore to Ontario are booked with Frontier Airlines.
Frontier Airlines
40 %
Delta
20 %
United Airlines
20 %
Favourite connection: via Denver
Stopover flights on this route are especially popular via Denver, making up 86 % of bookings.
Route
bookings
1 stopover Denver International Airport, CO
12h 41min, from 323 $
86 %
1 stopover Seattle-Tacoma International Airport, WA
19h 54min, from 459 $
14 %

Important flight information

Flight information: Baltimore - Ontario

Roundtrip from 397,31 $
Flight duration min. 07:45
Return flight duration min. 05:35
Distance 3670 km
Flights per week 6
Departure airport Airport Baltimore-Washington International-Thurgood Marshall Airport, MD (BWI)
Arrival airport Airport Ontario-CA (ONT)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Ontario
Flight destinations with a similar price
Flight destinations with a similar price