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

BWI Airport Page →
2,278 mi airlines 14/wk
On-time Some delays Frequent delays
Flight Schedule 5 flights Verified 3h ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
✓
→
WN4022
WN Southwest
B38M
1:10 PM
EDT
3:55 PM
PDT
5h 45m
—
M T W T F S S
Prices
✓
→
WN2416
WN Southwest
7M8
1:45 PM
EDT
4:20 PM
PDT
5h 35m
—
M T W T F S S
Prices
✓
→
WN1278
WN Southwest
73H
3:37 PM
EDT
5:32 PM
PDT
4h 55m
—
M T W T F S S
Prices
✓
←
WN3648
WN Southwest
7M8
9:55 PM
PDT T4
5:40 AM+1
EDT
4h 45m
—
M T W T F S S
Prices
✓
←
WN4128
WN Southwest
73H
10:29 PM
PDT T4
6:10 AM+1
EDT
4h 41m
—
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP
✧ 2-STOP Loading...
Baltimore to Ontario
1 carrier, 14 flights/week nonstop.
1 Airlines 14 Flights/wk 2,278 mi 4h 55m nonstop -3h behind 30 1-stop hubs

BWI–ONT is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 2,278 miles in approximately 4h 55m. Beyond nonstop, 30 hubs offer 1-stop connections.

Also explore BWI Routes ONT Routes BWI Live Flights ONT Live Flights BWI Delays ONT Delays
Carriers on this route

Airline Landscape

All carriers operating nonstop BWI–ONT service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 14 73H, 7M8, B38M 4h55-5h45 39% – –
Aircraft on this route
73H Boeing 737-800 – WN
7M8 Boeing 737 MAX 8 – WN
B38M – WN
Alliance coverage
Unaffiliated: WN (14 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, BWI to ONT direction.
Mon
2
flights
Tue
2
flights
Wed
2
flights
Thu
2
flights
Fri
2
flights
Sat
2
flights
Sun
2
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
3
Nonstop flights
14
Outbound / wk
14
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for BWI to ONT.
1-STOP
One-Stop Connections
30
Hubs
~6h
Fastest
~27h
Longest
SDF ~6h 42m CVG ~6h 49m SAF ~6h 56m IND ~7h 17m MEM ~7h 37m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,322
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
BWI → ONT
39%
Frequent delays expected. Consider flexible booking.
Departing
39%
Arriving
100%
Return
ONT → BWI
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
74%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. BWI delays → ONT delays →
Alternatives

Other ways to reach Ontario from Baltimore

Nearby airports with service to Ontario International Airport.
Metric BWI→ONT PHL→ONT
Distance from BWI – 90 mi
Nonstop airlines 1 1
Weekly flights 14 2
Flight time 4h 55m 5h 24m
Departure OTP 39% –
Philadelphia (PHL) to Ontario flights
Airports within 200 miles of BWI with service to Ontario International Airport.
Know before you go

Travel Essentials

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

When it's 6:00 PM in Baltimore, it's 3:00 PM in Ontario.
Distance & Flight Time
2,278 mi / 3,666 km
Nonstop flight time is approximately 4h 55m to 5h 45m.
Facts

BWI–ONT Quick Facts

Key statistics for the Baltimore to Ontario route.
Route details
Distance2,278 mi / 3,666 km
Flight time4h 55m to 5h 45m
Time difference-3 hours
Airlines (nonstop)1
Weekly flights14 out / 14 return
1-stop connections30 hubs
Origin: BWI
Full nameBaltimore/Washington International Thurgood Marshall Airport
IATA / ICAOBWI / KBWI
TimezoneAmerica/New_York
Passengers/yr26.4M
Elevation146 ft / 45 m
Destination: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
FAQ

Frequently Asked Questions

Common questions about BWI to ONT flights.
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to Ontario International Airport take approximately 4h 55m to 5h 45m. The route covers 2,278 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 14 nonstop flights per week from BWI to ONT. The return direction has about 14 weekly flights.
Yes, 1-stop connections are available through SDF, CVG, SAF, IND, MEM, VNY, EWR, PHL, FLL, MIA, SJD, ANC, ATL, ORD, IAH, DEN, BNA, PHX, CLT, SLC, MDW, LAS, SFO, DAL, HOU, DFW, SMF, SJC, SEA and AUS. These options provide additional schedule flexibility.
Ontario is 3 hours behind Baltimore.
Yes, return flights from ONT to BWI are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include PHL. 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 BWI to ONT

Baltimore/Washington International Thurgood Marshall Airport (BWI) and Ontario International Airport (ONT) are connected by nonstop service from Southwest Airlines. With 14 weekly departures, this is a well served route.

BWI to ONT Flight Duration and Schedule

Nonstop flight time from BWI to ONT ranges from 4 hours 55 minutes to 5 hours 45 minutes. The route covers a distance of 2,278 miles (3,666 km). There are approximately 14 weekly flights outbound and 14 return, totaling 28 flights per week in both directions.

Connecting Options and Alternatives

30 one-stop connections are available, with the fastest taking approximately 6 hours via SDF. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Philadelphia (PHL).