Flight Routes from Baltimore to Ontario

Trip type

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
10/01/26
1 Stopover (IAH)
F93067, F93131
24h 15min
Return
10/11/26
1 Stopover (IAH)
F93132, F93068
25h 28min
Frontier Airlines
$492
found yesterday
Baltimore
Ontario
Please note: transfer for connecting flight
Outbound
07/23/26
1 Stopover (DFW)
F93787, F94689
29h 18min
Return
07/27/26
1 Stopover (DFW)
F91406, F93788
15h 53min
Frontier Airlines
$587
Best option
Baltimore
Ontario
Outbound
06/25/26
1 Stopover (SFO)
UA2192, UA2661
08h 42min
Return
06/30/26
1 Stopover (DEN)
UA2446, UA1362
07h 17min
United Airlines
$656
Baltimore
Ontario
Outbound
10/01/26
1 Stopover (SEA)
AS0786, AS0571
09h 26min
Return
10/11/26
1 Stopover (SEA)
AS0592, AS0781
31h 26min
Alaska Airlines
$649
found yesterday
Baltimore
Ontario
Outbound
07/23/26
1 Stopover (SFO)
UA2192, UA2661
08h 34min
Return
07/27/26
1 Stopover (SFO)
UA5624, UA1340
09h 31min
United Airlines
$653
Baltimore
Ontario
Outbound
07/23/26
1 Stopover (DFW)
AA1626, AA1534
07h 43min
Return
07/27/26
1 Stopover (CLT)
AA2237, AA1635
08h 16min
American Airlines ?
$730
Baltimore
Ontario
Outbound
07/23/26
1 Stopover (IAH)
F93067, F93131
28h 20min
Return
07/27/26
1 Stopover (IAH)
F93132, F93068
23h 53min
Frontier Airlines
$739
Baltimore
Ontario
Outbound
06/25/26
2 Stopovers (ATL, DEN)
F92633, F93293, F91261
20h 49min
Return
06/30/26
3 Stopovers (BOI, SEA, MSP)
AS2026, AS2352, SY0286, SY0193
40h 20min
Frontier Airlines ?
$767
Baltimore
Ontario
Outbound
06/25/26
1 Stopover (DFW)
AA1626, AA1534
07h 49min
Return
06/30/26
2 Stopovers (PHX, CLT)
AA0864, AA0849, AA1635
11h 14min
American Airlines ?
$773
Baltimore
Ontario
Outbound
07/23/26
1 Stopover (IAH)
F93067, F93131
28h 20min
Return
07/27/26
1 Stopover (IAH)
F93132, F93068
23h 53min
Frontier Airlines ?
$832
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 $ 587,00
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