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
Baltimore
Ontario
Outbound
04/29/25
2 Stopovers (SEA, SFO)
AS0349, AS1284, UA0794
16h 15min
Return
05/08/25
1 Stopover (DFW)
F92924, F91476
21h 09min
Alaska Airlines, United Airlines ?
$362
Offers unavailable
Best option
Baltimore
Ontario
Outbound
08/19/25
1 Stopover (ATL)
DL1267, DL0779
07h 19min
Return
09/02/25
1 Stopover (ATL)
DL0828, DL0801
09h 11min
Delta Air Lines ?
$363
Baltimore
Ontario
Outbound
06/07/25
1 Stopover (DEN)
F92705, F91261
18h 52min
Return
06/23/25
1 Stopover (DEN)
F91500, F92706
12h 26min
Frontier Airlines
$369
Baltimore
Ontario
Outbound
06/07/25
1 Stopover (DEN)
F92705, F91261
18h 52min
Return
06/23/25
1 Stopover (DEN)
F91500, F92706
12h 26min
Frontier Airlines
$380
Baltimore
Ontario
Outbound
08/28/25
1 Stopover (ATL)
DL1267, DL0779
07h 19min
Return
09/19/25
1 Stopover (ATL)
DL0828, DL0801
09h 08min
Delta Air Lines ?
$393
Baltimore
Ontario
Outbound
08/19/25
1 Stopover (SEA)
AS0349, AS1118
09h 55min
Return
09/02/25
1 Stopover (DFW)
AA2956, AA2251
06h 46min
Alaska Airlines ?
$394
Baltimore
Ontario
Outbound
08/19/25
1 Stopover (SEA)
HA4841, HA6813
09h 55min
Return
09/02/25
1 Stopover (SEA)
HA6290, HA6635
12h 31min
Hawaiian Airlines
$403
Baltimore
Ontario
Outbound
08/19/25
1 Stopover (DFW)
AA1403, AA2956
07h 07min
Return
09/02/25
1 Stopover (DFW)
AA2773, AA2314
09h 30min
American Airlines ?
$431
Baltimore
Ontario
Outbound
09/19/25
1 Stopover (CLT)
AA1495, AA2276
08h 51min
Return
09/29/25
2 Stopovers (PHX, ORD)
AA1666, AA2913, AA4474
17h 46min
American Airlines ?
$434
Baltimore
Ontario
Outbound
06/07/25
1 Stopover (SFO)
UA1259, UA1697
08h 23min
Return
06/23/25
1 Stopover (DEN)
UA0368, UA1841
07h 48min
United Airlines ?
$443
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 $ 361,52
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