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
09/23/25
1 Stopover (SEA)
AS0349, AS1118
10h 09min
Return
09/30/25
1 Stopover (SEA)
AS1119, AS0344
11h 29min
Alaska Airlines ?
$354
Baltimore
Ontario
Outbound
09/23/25
1 Stopover (SEA)
AS0349, AS1118
10h 09min
Return
09/30/25
1 Stopover (SEA)
AS1119, AS0344
11h 29min
Alaska Airlines ?
$376
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
10/09/25
2 Stopovers (MSP, DEN)
SY0194, SY0655, F91499
15h 11min
Return
11/01/25
1 Stopover (DFW)
AA1412, AA1213
08h 40min
Sun Country Airlines, Frontier Airlines ?
$432
Baltimore
Ontario
Outbound
09/04/25
1 Stopover (CLT)
AA1495, AA2276
08h 51min
Return
09/28/25
1 Stopover (CLT)
AA2952, AA3174
08h 09min
American 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 (IAH)
UA2384, UA1563
08h 41min
Return
10/24/25
1 Stopover (IAH)
UA1936, UA1533
07h 13min
United Airlines ?
$466
Baltimore
Ontario
Outbound
09/23/25
1 Stopover (DEN)
UA2412, UA0430
07h 02min
Return
09/30/25
1 Stopover (DEN)
UA1417, UA0709
07h 02min
United Airlines
$483
Baltimore
Ontario
Outbound
09/04/25
1 Stopover (CLT)
AA1495, AA2276
08h 51min
Return
09/28/25
1 Stopover (DFW)
AA2773, AA2314
09h 30min
American Airlines ?
$510
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 353,76 $
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