Houston to Ontario (IAH–ONT) — Airlines, Schedules & Connections

IAH Airport Page →
1,331 mi airlines charter/private 23/wk
On-time Some delays Frequent delays
Flight Schedule 7 flights Verified 53m ago
Also flown by charter / private operators.
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
Y42524cs
Y4 Volaris
32Q
4:20 PM
CDT TA
5:48 PM
PDT
3h 28m
—
M T W T F S S
Prices
✓
→
F93131+1
F9 Frontier
A21N
7:28 PM
CDT TA
8:57 PM
PDT
3h 29m
—
M T W T F S S
Prices
✓
→
UA1563
UA United
739
8:30 PM
CDT TC
9:59 PM
PDT
3h 29m
58%
M T W T F S S
Prices
✓
←
UA2267
Starts Sep 24
UA United
739
6:00 AM
PDT T2
11:15 AM
CDT
3h 15m
—
M T W T F S S
Prices
✓
←
UA1936
UA United
739
6:00 AM
PDT T2
11:15 AM
CDT
3h 15m
—
M T W T F S S
Prices
✓
←
F93132+1
F9 Frontier
A21N
6:35 PM
PDT
11:45 PM
CDT
3h 10m
—
M T W T F S S
Prices
✓
←
Y42525cs
Y4 Volaris
32Q
6:45 PM
PDT
11:58 PM
CDT
3h 13m
—
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 4h 58m AAASF9 → AAWN Phoenix (PHX) to Ontario flights
LAS Las Vegas 5h 10m EJAEKF9 → EJAF9WN Las Vegas (LAS) to Ontario flights
DFW Dallas-Fort Worth 5h 16m AAASAY → AABAF9 Dallas-Fort Worth (DFW) to Ontario flights
DEN Denver 5h 44m 8CACAV → ACF9UA Denver (DEN) to Ontario flights
SLC Salt Lake City 5h 54m AFAMDL → AFAMDL Salt Lake City (SLC) to Ontario flights
AUS Austin 6h ACCMEK → WN Austin (AUS) to Ontario flights
SFO San Francisco 6h 28m EKNHNZ → ACCMEJA San Francisco (SFO) to Ontario flights
ATL Atlanta 7h 21m AFAMDL → AFAMDL Atlanta (ATL) to Ontario flights
SMF Sacramento 7h 24m EKUAVA → WN Sacramento (SMF) to Ontario flights
BNA Nashville 7h 25m CMNZUA → WN Nashville (BNA) to Ontario flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Houston to Ontario
2 carriers, 23 flights/week nonstop.
2 Airlines 1,331 mi 3h 29m nonstop -2h behind

IAH–ONT is served by 2 airlines with nonstop service. Frontier and United Airlines lead the route. The flight covers 1,331 miles in approximately 3h 29m. Beyond nonstop, 1-stop connecting options are also available.

Also explore Browse available seat maps IAH Routes ONT Routes IAH Live Flights ONT Live Flights IAH Delays ONT Delays
All flights from Ontario (ONT) Ontario to Houston flights
Carriers on this route

Airline Landscape

All carriers operating nonstop IAH–ONT service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
F9 Frontier Also: Y4 7 A21N 3h29 100% – Y4
UA United Airlines 7 739 3h29 100% Star Alliance –
Aircraft on this route
32Q Airbus A321neo – Y4
739 Boeing 737-900 – UA
A21N Airbus A321neo – F9
Alliance coverage
Unaffiliated: F9 (7 flights/wk, 50%)
Star Alliance: UA (7 flights/wk, 50%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule

Weekly Schedule Pattern

Nonstop flight frequency by day of week, IAH to ONT 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
23
Outbound / wk
25
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for IAH to ONT.
1-STOP
One-Stop Connections
22
Hubs
~4h
Fastest
~40h
Longest
PHX ~4h 58m LAS ~5h 10m DFW ~5h 16m DEN ~5h 44m SLC ~5h 54m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,700
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
IAH → ONT
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
100%
Return
ONT → IAH
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
100%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. IAH delays → ONT delays →
Alternatives

Other ways to reach Ontario from Houston

Nearby airports with service to Ontario International Airport.
Metric IAH→ONT HOU→ONT AUS→ONT
Distance from IAH – 24 mi 140 mi
Nonstop airlines 2 4 2
Weekly flights 23 14 12
Flight time 3h 29m 3h 10m 3h
Departure OTP 100% – –
Houston (HOU) to Ontario flights · Austin (AUS) to Ontario flights
Airports within 200 miles of IAH with service to Ontario International Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
-2h
Ontario is 2 hours behind Houston.
IAH: CDT · ONT: PDT

When it's 6:00 PM in Houston, it's 4:00 PM in Ontario.
Distance & Flight Time
1,331 mi / 2,142 km
Nonstop flight time is approximately 3h 29m gate to gate.
Getting to IAH

IAH has no direct rail link to downtown Houston. The IAH Express bus runs from Houston Amtrak/Greyhound station via Park & Ride to Terminal C (60–90 min, $1.25 with METRO Q card). This is the only transit option; Houston's rail network does not reach the airport.Taxis from downtown Houston cost $50–70 and take 40–60 minutes. Ride-hails (Uber, Lyft) are typically $35–55. IAH sits 23 miles north of downtown on the North Freeway (I-45); traffic is heavy during morning and evening rush. Remote economy parking lots serve all terminals via shuttle.

Facts

IAH–ONT Quick Facts

Key statistics for the Houston to Ontario route.
Route details
Distance1,331 mi / 2,142 km
Flight time3h 29m
Time difference-2 hours
Airlines (nonstop)2
Weekly flights23 out / 25 return
1-stop connectionsAvailable
Origin: IAH
Full nameGeorge Bush Intercontinental Airport
IATA / ICAOIAH / KIAH
TimezoneAmerica/Chicago
Passengers/yr46.7M
Elevation97 ft / 30 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 IAH to ONT flights.
Nonstop flights from George Bush Intercontinental Airport to Ontario International Airport take about 3h 29m gate to gate. The route covers 1,331 miles.
2 airlines operate flights from IAH to ONT: Frontier and 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, Harry Reid and Dallas Fort Worth.
On a single ticket, yes. Your bags are checked through to ONT and move between planes without you. On two separate tickets you collect your bags at the connecting airport and recheck them, so build in extra layover time.
Ontario is 2 hours behind Houston.
Yes, return flights from ONT to IAH are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include HOU and AUS. 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 IAH to ONT

George Bush Intercontinental Airport (IAH) and Ontario International Airport (ONT) are connected by nonstop service from Frontier and United Airlines. With 23 weekly departures, this is a well served route.

IAH to ONT Flight Duration and Schedule

Nonstop flight time from IAH to ONT is about 3 hours 29 minutes gate to gate. The route covers a distance of 1,331 miles (2,142 km). There are approximately 23 weekly flights outbound and 25 return, totaling 48 flights per week in both directions.

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Phoenix Sky Harbor, Harry Reid and Dallas Fort Worth. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Houston (HOU) and Austin (AUS).