Southwest Airlines
Did you mean flights from Baltimore-Washington to Ontario?
United States
Ontario International Airport
Switch direction
United States
Baltimore/Washington International Thurgood Marshall Ai
Click to show full flight schedule
Scan through all non-stop flights from Ontario to Baltimore-Washington. The full flight schedule below gives an overview of all non-stop flights from ONT to BWI, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
Baltimore-Washington is a humid subtropical or warm-temperate destination, featuring hot, humid summers with temperatures typically around 30°C (86°F) and mild to cool winters. The region is known for consistent rainfall throughout the year, peaking in summer. The area is known for its vibrant urban energy, diverse landscapes, and numerous outdoor activities.
You can visit Baltimore-Washington any time of the year, but the best months to explore are from to and from to .
Currently, there is only one airline operating non-stop flights from Ontario ONT to Baltimore-Washington BWI, which is Southwest Airlines. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their ONT BWI flight schedule.
Flights from ONT to BWI are operated 7 times a week, with an average of 1 flight per day. Departure times vary between 21:40 - 21:55. The earliest flight departs at 21:40, the last flight departs at 21:55. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
On this non-stop route, you can fly in Economy only.
The fastest direct flight from Ontario to Baltimore-Washington takes 4 hours and 50 minutes. The flight distance between Ontario and Baltimore-Washington is 2,276 miles (or 3,663 km).
There are 0 airports in Baltimore-Washington: .
There are 7 flights per week flying from Ontario to Baltimore-Washington (as of April 2026).
4 hours and 50 minutes is the average flight time from Ontario to Baltimore-Washington.
The distance from Ontario to Baltimore-Washington is 2,276 miles (3,663 kilometers).
Southwest Airlines is the only airline flying nonstop from Ontario to Baltimore-Washington.
There are no alliances flying direct from Ontario to Baltimore-Washington at the moment.
You can fly non-stop in Economy only.
Aircraft types that fly from Ontario to Baltimore-Washington:
The earliest flight departs at 21:40 from Ontario and arrives at 05:30 at Baltimore-Washington.
The latest flight departs at 21:55 from Ontario and arrives at 05:35 at Baltimore-Washington.
2,276 miles (3,663 km) · 4h 50m
21:55
05:35
Southwest Airlines
WN 4128
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
21:55
05:40
Southwest Airlines
WN 3648
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
Click to Check Prices
