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
Best option
Baltimore
Ontario
Outbound
05/16/26
1 Stopover (DFW)
F91475, F94689
08h 37min
Return
05/29/26
1 Stopover (SEA)
AS0625, AS0344
11h 25min
Frontier Airlines ?
$384
Baltimore
Ontario
Outbound
05/16/26
1 Stopover (PDX)
AS0557, AS0097
09h 26min
Return
05/29/26
1 Stopover (SEA)
AS0625, AS0344
11h 25min
Alaska Airlines ?
$476
Baltimore
Ontario
Outbound
05/16/26
1 Stopover (DFW)
AA1403, AA2462
09h 18min
Return
05/29/26
1 Stopover (SEA)
AS0625, AS0344
11h 25min
American Airlines ?
$532
Baltimore
Ontario
Outbound
05/16/26
2 Stopovers (ATL, LAS)
F92633, F93923, F91283
28h 59min
Return
05/29/26
3 Stopovers (IAH, SAL, IAH)
UA1936, UA1461, UA2203, UA0604
26h 49min
Frontier Airlines ?
$565
Baltimore
Ontario
Outbound
05/16/26
1 Stopover (DFW)
AA1403, AA2462
09h 18min
Return
05/29/26
2 Stopovers (PHX, CLT)
AA2898, AA0588, AA1318
11h 45min
American Airlines ?
$598
Baltimore
Ontario
Outbound
07/26/26
1 Stopover (PDX)
AS1369, AS1571
19h 36min
Return
08/05/26
1 Stopover (SEA)
AS0575, AS0781
09h 52min
Alaska Airlines ?
$600
Baltimore
Ontario
Outbound
07/26/26
2 Stopovers (ATL, IAH)
F91079, F91403, F93131
41h 09min
Return
08/05/26
2 Stopovers (DEN, MSP)
F92908, SY0658, SY0193
19h 26min
Frontier Airlines ?
$614
Baltimore
Ontario
Outbound
07/26/26
1 Stopover (DFW)
AA1626, AA1534
07h 46min
Return
08/05/26
1 Stopover (SEA)
AS0575, AS0781
09h 52min
American Airlines ?
$622
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
07/26/26
1 Stopover (DFW)
AA1403, AA2242
07h 41min
Return
08/05/26
2 Stopovers (PHX, CLT)
AA1666, AA2136, AA1216
11h 59min
American Airlines ?
$666
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 $383.19
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