Direct (nonstop) flights from Baltimore to Ontario
1 airline flys nonstop from Baltimore Washington International (BWI) to Ontario International Airport (ONT). It's 2,283 miles (3,674 km), about 5h 30m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 28, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Baltimore to Ontario with one stop · direct emits 386 kg CO₂ per passenger
Looking for the return flight?
ONT → BWI: Flights from Ontario to BaltimoreOther direct flights from Baltimore
Direct flights from Ontario (ONT)
Frequently Asked Questions
How long is the direct flight from Baltimore to Ontario?
A nonstop flight from Baltimore (BWI) to Ontario (ONT) takes approximately 5 hours and 30 minutes. The distance is 2,283 miles (3,674 km).
Which airlines fly nonstop from Baltimore to Ontario?
Just Southwest Airlines.
Is there a nonstop flight from Baltimore to Ontario?
Yes. 1 airline: Southwest Airlines.
How far is Baltimore from Ontario?
The flight distance from Baltimore to Ontario is 2,283 miles (3,674 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What type of aircraft flies from Baltimore to Ontario?
At 5h 30m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Baltimore to Ontario?
Roughly 386 kg CO2 per passenger one-way. That's about the same as driving 1,930 km.
Is the return flight from Ontario to Baltimore also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Baltimore to Ontario?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Baltimore Washington International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.