Flights from Ontario to Baltimore

Did you mean Flights from Baltimore to Ontario?

Ontario

United States

ONT

Ontario International Airport

Baltimore

United States

BWI

Baltimore/Washington International Thurgood Marshal Airport

Route: Published service includes stops
Distance: 2,278 miles
Marketing airlines: 1 airline
Aircraft: 2 aircraft types
Dates: Nov 1, 2026 – Feb 6, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

Ontario to Baltimore route overview

Ontario International Airport (ONT) serves Ontario; Baltimore/Washington International Thurgood Marshal Airport (BWI) serves Baltimore.

The airports are 2,278 miles apart by great-circle distance.

Roame's current schedule feed lists service with stops from ONT to BWI, but no nonstop service.

Marketing airlines listed in the current schedule, including codeshare sellers, are Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Nov 1, 2026 – Feb 6, 2027.

Marketing airlines on the Ontario to Baltimore route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

Aircraft flying from ONT to BWI

Frequently asked questions

Which airports serve the Ontario to Baltimore route?

Ontario International Airport (ONT) is the origin airport and Baltimore/Washington International Thurgood Marshal Airport (BWI) is the destination airport.

How far is Baltimore from Ontario?

ONT and BWI are approximately 2,278 miles apart by great-circle distance.

Are there direct flights from ONT to BWI?

No. Roame's current schedule feed lists service with stops from ONT to BWI, but no nonstop service.

Which airlines market flights from ONT to BWI?

Which aircraft fly from ONT to BWI?

Aircraft listed in the current schedule include Boeing 737-800 Winglets (73H) and 7S7.