Ontario to Baltimore (ONT–BWI) — Airlines, Schedules & Connections

ONT Airport Page →
2,278 mi airlines charter/private 7/wk
On-time Some delays Frequent delays
Flight Schedule 5 flights Verified 14m ago
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
WN3143
WN Southwest
7S7
9:40 PM
PDT T4
5:30 AM+1
EDT
4h 50m
—
M T W T F S S
Prices
✓
←
WN991
WN Southwest
73H
9:50 AM
EDT
12:05 PM
PDT
5h 15m
46%
M T W T F S S
Prices
✓
←
WN719
WN Southwest
73H
10:00 AM
EDT
12:15 PM
PDT
5h 15m
46%
M T W T F S S
Prices
✓
←
WN2165
WN Southwest
B38M
1:40 PM
EDT
3:55 PM
PDT
5h 15m
46%
M T W T F S S
Prices
✓
←
WN200
WN Southwest
7M8
8:10 PM
EDT
10:25 PM
PDT
5h 15m
46%
M T W T F S S
Prices

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 10 hubs
LAS Las Vegas 6h 35m F9TIVWN → WN Las Vegas (LAS) to Baltimore flights
DEN Denver 6h 37m ACF9G6 → UAWN Denver (DEN) to Baltimore flights
MDW Chicago 6h 45m WN → UAWN Chicago (MDW) to Baltimore flights
BNA Nashville 6h 48m WN → SYWN Nashville (BNA) to Baltimore flights
SLC Salt Lake City 6h 56m AFAMDL → DLKEWN Salt Lake City (SLC) to Baltimore flights
DFW Dallas-Fort Worth 6h 59m AABAF9 → AACXEJA Dallas-Fort Worth (DFW) to Baltimore flights
AUS Austin 7h WN → WN Austin (AUS) to Baltimore flights
ATL Atlanta 7h 1m AFAMDL → 8CAFAM Atlanta (ATL) to Baltimore flights
HOU Houston 7h 15m WN → WNYE Houston (HOU) to Baltimore flights
IAH Houston 7h 25m 8CF9UA → F9NZUA Houston (IAH) to Baltimore flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Ontario to Baltimore
1 carrier, 7 flights/week nonstop.
1 Airlines 2,278 mi 4h 50m nonstop +3h ahead

ONT–BWI is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 2,278 miles in approximately 4h 50m. Beyond nonstop, 1-stop connecting options are also available.

Also explore ONT Routes BWI Routes ONT Live Flights BWI Live Flights ONT Delays BWI Delays
All flights from Baltimore (BWI) Baltimore to Ontario flights
Carriers on this route

Airline Landscape

All carriers operating nonstop ONT–BWI service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 7 7S7 4h50 58% – –
Aircraft on this route
7S7 Boeing 737 MAX 7 – WN
Alliance coverage
Unaffiliated: WN (7 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule

Weekly Schedule Pattern

Nonstop flight frequency by day of week, ONT to BWI direction.
Mon
1
flight
Tue
1
flight
Wed
1
flight
Thu
1
flight
Fri
1
flight
Sat
1
flight
Sun
1
flight
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
1
Nonstop flights
7
Outbound / wk
8
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for ONT to BWI.
1-STOP
One-Stop Connections
26
Hubs
~6h
Fastest
~17h
Longest
ADW ~6h 19m LAS ~6h 35m DEN ~6h 37m MDW ~6h 45m BNA ~6h 48m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,233
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
ONT → BWI
58%
Frequent delays expected. Consider flexible booking.
Departing
58%
Arriving
83%
Return
BWI → ONT
74%
Moderate delays possible. Allow buffer time.
Departing
74%
Arriving
85%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ONT delays → BWI delays →
Alternatives

Other ways to reach Baltimore from Ontario

Nearby airports with service to Baltimore/Washington International Thurgood Marshall Airport.
Metric ONT→BWI SBD→BWI SNA→BWI
Distance from ONT – 21 mi 30 mi
Nonstop airlines 1 1 3
Weekly flights 7 2 1
Flight time 4h 50m 4h 13m 4h 24m
Departure OTP 58% – –
San Bernardino (SBD) to Baltimore flights · Santa Ana (SNA) to Baltimore flights · Long Beach (LGB) to Baltimore flights
Airports within 200 miles of ONT with service to Baltimore/Washington International Thurgood Marshall Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+3h
Baltimore is 3 hours ahead of Ontario.
ONT: PDT · BWI: EDT

When it's 6:00 PM in Ontario, it's 9:00 PM in Baltimore.
Distance & Flight Time
2,278 mi / 3,666 km
Nonstop flight time is approximately 4h 50m gate to gate.
Facts

ONT–BWI Quick Facts

Key statistics for the Ontario to Baltimore route.
Route details
Distance2,278 mi / 3,666 km
Flight time4h 50m
Time difference+3 hours
Airlines (nonstop)1
Weekly flights7 out / 8 return
1-stop connectionsAvailable
Origin: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
Destination: BWI
Full nameBaltimore/Washington International Thurgood Marshall Airport
IATA / ICAOBWI / KBWI
TimezoneAmerica/New_York
Passengers/yr26.4M
Elevation146 ft / 45 m
FAQ

Frequently Asked Questions

Common questions about ONT to BWI flights.
Nonstop flights from Ontario International Airport to Baltimore/Washington International Thurgood Marshall Airport take about 4h 50m gate to gate. The route covers 2,278 miles.
1 airline operates flights from ONT to BWI: Southwest Airlines.
This route has daily service. Check the schedule above for departure days and times in each direction.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Harry Reid, Denver and Chicago Midway.
Baltimore is 3 hours ahead of Ontario.
Yes, return flights from BWI to ONT are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include SBD, SNA and LGB. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from ONT to BWI

Ontario International Airport (ONT) and Baltimore/Washington International Thurgood Marshall Airport (BWI) are connected by nonstop service from Southwest Airlines. With 7 weekly departures, this is a regularly served route.

ONT to BWI Flight Duration and Schedule

Nonstop flight time from ONT to BWI is about 4 hours 50 minutes gate to gate. The route covers a distance of 2,278 miles (3,666 km). There are approximately 7 weekly flights outbound and 8 return, totaling 15 flights per week in both directions.

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Harry Reid, Denver and Chicago Midway. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include San Bernardino (SBD), Santa Ana (SNA) and Long Beach (LGB).