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
04/12/25
1 Stopover (DFW)
F94397, F91405
14h 05min
Return
04/27/25
2 Stopovers (DEN, ATL)
F91500, F93294, F92634
37h 47min
Frontier Airlines ?
$293
Best option
Baltimore
Ontario
Outbound
06/18/25
1 Stopover (ATL)
DL2711, DL0770
08h 58min
Return
07/15/25
1 Stopover (ATL)
DL0828, DL0801
09h 11min
Delta Air Lines ?
$409
found 3 days ago
Baltimore
Ontario
Outbound
04/21/25
1 Stopover (DEN)
F92705, F91261
26h 03min
Return
05/19/25
1 Stopover (DEN)
F91500, F92706
13h 23min
Frontier Airlines
$302
Baltimore
Ontario
Outbound
04/21/25
2 Stopovers (ATL, LAS)
F91079, F91115, F91283
48h 50min
Return
05/19/25
2 Stopovers (DEN, ATL)
F91500, F93600, F91080
29h 11min
Frontier Airlines ?
$305
Baltimore
Ontario
Outbound
04/21/25
1 Stopover (DEN)
F92705, F91261
26h 03min
Return
05/19/25
1 Stopover (DEN)
F91500, F92706
13h 23min
Frontier Airlines
$312
Baltimore
Ontario
Outbound
06/20/25
2 Stopovers (MSP, DEN)
SY0194, SY0657, F91261
25h 03min
Return
07/19/25
2 Stopovers (DEN, MSP)
F92908, SY0658, SY0193
38h 08min
Sun Country Airlines, Frontier Airlines ?
$442
Baltimore
Ontario
Outbound
06/18/25
1 Stopover (DFW)
AA2314, AA3006
08h 26min
Return
07/15/25
1 Stopover (DFW)
AA1820, AA2251
09h 22min
American Airlines ?
$452
found 3 days ago
Baltimore
Ontario
Outbound
06/18/25
1 Stopover (IAH)
UA0600, UA1563
09h 05min
Return
07/15/25
1 Stopover (DEN)
UA1575, UA1841
21h 19min
United Airlines ?
$469
found 3 days ago
Baltimore
Ontario
Outbound
06/18/25
1 Stopover (DEN)
UA2012, UA1574
07h 42min
Return
07/15/25
1 Stopover (DEN)
UA0368, UA1841
07h 46min
United Airlines
$554
found 3 days ago
Baltimore
Ontario
Outbound
06/08/25
2 Stopovers (MSP, DEN)
SY0194, SY0657, F91261
25h 03min
Return
06/12/25
1 Stopover (DEN)
UA0368, UA1841
07h 48min
Sun Country Airlines, Frontier Airlines ?
$556
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 $292.59
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