Ontario to Chicago (ONT–ORD) — Airlines, Schedules & Connections

ONT Airport Page →
1,697 mi airlines charter/private 21/wk
On-time Some delays Frequent delays
Flight Schedule 4 flights Verified 26m ago
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
UA2826
UA United
739
6:05 AM
PDT T2
12:20 PM
CDT
4h 15m
—
M T W T F S S
Prices
✓
→
UA2171
UA United
739
6:10 AM
PDT T2
12:25 PM
CDT
4h 15m
—
M T W T F S S
Prices
✓
→
UA1314
UA United
739
6:30 AM
PDT T2
12:45 PM
CDT
4h 15m
—
M T W T F S S
Prices
✓
←
UA658
UA United
739
8:18 PM
CDT T1
10:51 PM
PDT
4h 33m
20%
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
PHX Phoenix 5h 40m AAPDWN → AAACAY Phoenix (PHX) to Chicago flights
DEN Denver 5h 40m ACF9G6 → AAACAY Denver (DEN) to Chicago flights
LAS Las Vegas 5h 42m F9TIVWN → AAACAV Las Vegas (LAS) to Chicago flights
SLC Salt Lake City 5h 57m AFAMDL → AAACAF Salt Lake City (SLC) to Chicago flights
DAL Dallas 6h 5m WN → WN Dallas (DAL) to Chicago flights
SMF Sacramento 6h 25m WN → AAACLH Sacramento (SMF) to Chicago flights
DFW Dallas-Fort Worth 6h 34m AABAF9 → AAACAV Dallas-Fort Worth (DFW) to Chicago flights
AUS Austin 6h 34m WN → AAACAS Austin (AUS) to Chicago flights
IAH Houston 6h 42m 8CF9UA → AAASAV Houston (IAH) to Chicago flights
BNA Nashville 6h 46m WN → AAACAS Nashville (BNA) to Chicago flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Ontario to Chicago
1 carrier, 21 flights/week nonstop.
1 Airlines 1,697 mi 4h 15m nonstop +2h ahead

ONT–ORD is served by 1 airline with nonstop service. United Airlines leads the route. The flight covers 1,697 miles in approximately 4h 15m. Beyond nonstop, 1-stop connecting options are also available.

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

Airline Landscape

All carriers operating nonstop ONT–ORD service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
UA United Airlines 21 739 4h15 100% Star Alliance –
Aircraft on this route
739 Boeing 737-900 – UA
Alliance coverage
Star Alliance: UA (21 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 ORD direction.
Mon
3
flights
Tue
3
flights
Wed
3
flights
Thu
3
flights
Fri
3
flights
Sat
3
flights
Sun
3
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
3
Nonstop flights
21
Outbound / wk
7
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for ONT to ORD.
1-STOP
One-Stop Connections
36
Hubs
~5h
Fastest
~42h
Longest
PSP ~5h 24m PHX ~5h 40m DEN ~5h 40m LAS ~5h 42m IFP ~5h 50m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,127
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 → ORD
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
100%
Return
ORD → ONT
84%
Generally reliable. Most flights run on time.
Departing
84%
Arriving
100%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ONT delays → ORD delays →
Alternatives

Other ways to reach Chicago from Ontario

Nearby airports with service to Chicago O'Hare International Airport.
Metric ONT→ORD SNA→ORD LGB→ORD
Distance from ONT – 30 mi 36 mi
Nonstop airlines 1 13 2
Weekly flights 21 138 –
Flight time 4h 15m 3h 45m 4h 10m
Departure OTP 100% – –
Santa Ana (SNA) to Chicago flights · Long Beach (LGB) to Chicago flights · Los Angeles (LAX) to Chicago flights
Airports within 200 miles of ONT with service to Chicago O'Hare International Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+2h
Chicago is 2 hours ahead of Ontario.
ONT: PDT · ORD: CDT

When it's 6:00 PM in Ontario, it's 8:00 PM in Chicago.
Distance & Flight Time
1,697 mi / 2,730 km
Nonstop flight time is approximately 4h 15m gate to gate.
Getting from ORD

CTA Blue Line runs 24/7 from O'Hare to downtown Chicago (45 min, $5). Taxis use a flat-rate zone system; downtown is around $40–45 plus tip. Ride-shares are typically $30–50.The Airport Transit System (ATS) connects all terminals and parking. Metra commuter rail does not serve O'Hare directly; transfer downtown via Blue Line.

Chicago Climate

Continental climate with four distinct seasons. Summers are warm and humid (25–32°C) with afternoon thunderstorms. Winters are cold (−10 to −2°C) with heavy snowfall that regularly delays flights December through March.

Spring and fall are mild but unpredictable. Pack layers. Lake Michigan moderates temperatures near the lakefront, but O'Hare sits inland and runs colder.

Check current weather forecasts before travel.
Facts

ONT–ORD Quick Facts

Key statistics for the Ontario to Chicago route.
Route details
Distance1,697 mi / 2,730 km
Flight time4h 15m
Time difference+2 hours
Airlines (nonstop)1
Weekly flights21 out / 7 return
1-stop connectionsAvailable
Origin: ONT
Full nameOntario International Airport
IATA / ICAOONT / KONT
TimezoneAmerica/Los_Angeles
Passengers/yr7.0M
Elevation944 ft / 288 m
Destination: ORD
Full nameChicago O'Hare International Airport
IATA / ICAOORD / KORD
TimezoneAmerica/Chicago
Passengers/yr80.0M
Elevation680 ft / 207 m
FAQ

Frequently Asked Questions

Common questions about ONT to ORD flights.
Nonstop flights from Ontario International Airport to Chicago O'Hare International Airport take about 4h 15m gate to gate. The route covers 1,697 miles.
1 airline operates flights from ONT to ORD: United 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 Phoenix Sky Harbor, Denver and Harry Reid.
Chicago is 2 hours ahead of Ontario.
Yes, return flights from ORD to ONT are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include SNA, LGB and LAX. 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 ORD

Ontario International Airport (ONT) and Chicago O'Hare International Airport (ORD) are connected by nonstop service from United Airlines. With 21 weekly departures, this is a well served route.

ONT to ORD Flight Duration and Schedule

Nonstop flight time from ONT to ORD is about 4 hours 15 minutes gate to gate. The route covers a distance of 1,697 miles (2,730 km). There are approximately 21 weekly flights outbound and 7 return, totaling 28 flights per week in both directions.

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Phoenix Sky Harbor, Denver and Harry Reid. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Santa Ana (SNA), Long Beach (LGB) and Los Angeles (LAX).