Compare live prices for ONT to IAH. Use the search panel
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ONT → IAHApprox. 2142.26 km11 May 2026Live inventory
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Showing 25
of 136
live flights
Frontier Airlines
F9-2412
20:06
05/11/2026
ONT
Ontario International Airport
5h 19m
Non-stop
01:25
05/12/2026
+1
IAH
George Bush Intercontinental Houston Airport
₹7,797
per person
✕ Non-refundable
Southwest Airlines
WN-2945
07:00
05/11/2026
LGB
Ontario International Airport
6h 45m
1 Stop
⏱ AUS · 0h 55mAUS Airport
13:45
05/11/2026
HOU
George Bush Intercontinental Houston Airport
₹12,686
per person
✓ Refundable🔥 Last 5 seats8 fare options
Southwest Airlines
WN-2962
16:15
05/11/2026
LGB
Ontario International Airport
7h 50m
1 Stop
⏱ PHX · 2h 0mPHX Airport
00:05
05/12/2026
+1
HOU
George Bush Intercontinental Houston Airport
₹12,686
per person
✓ Refundable8 fare options
Southwest Airlines
WN-2971
08:50
05/11/2026
LGB
Ontario International Airport
9h 55m
1 Stop
⏱ SLC · 3h 5mSLC Airport
18:45
05/11/2026
HOU
George Bush Intercontinental Houston Airport
₹12,686
per person
✓ Refundable8 fare options
Delta Air Lines
DL-1287
18:45
05/11/2026
LAX
Ontario International Airport
5h 10m
Non-stop
23:55
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹14,785
per person
✕ Non-refundable
Delta Air Lines
DL-1143
09:54
05/11/2026
LAX
Ontario International Airport
5h 19m
Non-stop
15:13
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹14,785
per person
✕ Non-refundable
Frontier Airlines
F9-2232
11:36
05/11/2026
ONT
Ontario International Airport
8h 29m
1 Stop
⏱ LAS · 1h 39mLAS Airport
20:05
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹14,985
per person
✕ Non-refundable
Delta Air Lines
DL-1006
13:29
05/11/2026
ONT
Ontario International Airport
8h 48m
1 Stop
⏱ SLC · 1h 57mSLC Airport
22:17
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹15,238
per person
✕ Non-refundable3 fare options
Delta Air Lines
DL-2891
22:00
05/11/2026
ONT
Ontario International Airport
10h 44m
1 Stop
⏱ ATL · 2h 16mATL Airport
08:44
05/12/2026
+1
IAH
George Bush Intercontinental Houston Airport
₹15,238
per person
✕ Non-refundable3 fare options
Delta Air Lines
DL-2891
22:00
05/11/2026
ONT
Ontario International Airport
11h 32m
1 Stop
⏱ ATL · 3h 6mATL Airport
09:32
05/12/2026
+1
HOU
George Bush Intercontinental Houston Airport
₹15,238
per person
✕ Non-refundable2 fare options
Frontier Airlines
F9-2232
11:36
05/11/2026
ONT
Ontario International Airport
24h 57m
1 Stop
⏱ LAS · 18h 28mLAS Airport
12:33
05/12/2026
+1
IAH
George Bush Intercontinental Houston Airport
₹15,532
per person
✕ Non-refundable
Frontier Airlines
F9-1358
08:44
05/11/2026
ONT
Ontario International Airport
11h 21m
1 Stop
⏱ LAS · 4h 27mLAS Airport
20:05
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹15,532
per person
✕ Non-refundable
Frontier Airlines
F9-1358
08:44
05/11/2026
ONT
Ontario International Airport
27h 49m
1 Stop
⏱ LAS · 21h 16mLAS Airport
12:33
05/12/2026
+1
IAH
George Bush Intercontinental Houston Airport
₹15,532
per person
✕ Non-refundable
Southwest Airlines
WN-869
18:15
05/11/2026
LAX
Ontario International Airport
5h 10m
Non-stop
23:25
05/11/2026
HOU
George Bush Intercontinental Houston Airport
₹15,688
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-2854
23:50
05/11/2026
LAX
Ontario International Airport
5h 10m
Non-stop
05:00
05/12/2026
+1
HOU
George Bush Intercontinental Houston Airport
₹15,688
per person
✕ Non-refundable9 fare options
American Airlines
AA-2773
23:59
05/11/2026
ONT
Ontario International Airport
8h 21m
1 Stop
⏱ DFW · 2h 9mDFW Airport
08:20
05/12/2026
+1
IAH
George Bush Intercontinental Houston Airport
₹15,790
per person
✓ Refundable21 fare options
American Airlines
AA-2773
23:59
05/11/2026
ONT
Ontario International Airport
9h 41m
1 Stop
⏱ DFW · 3h 34mDFW Airport
09:40
05/12/2026
+1
IAH
George Bush Intercontinental Houston Airport
₹15,790
per person
✓ Refundable20 fare options
American Airlines
AA-2912
16:23
05/11/2026
SNA
Ontario International Airport
7h 3m
1 Stop
⏱ PHX · 1h 0mPHX Airport
23:26
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹15,888
per person
✕ Non-refundable9 fare options
American Airlines
AA-2920
16:39
05/11/2026
SNA
Ontario International Airport
7h 15m
1 Stop
⏱ DFW · 0h 51mDFW Airport
23:54
05/11/2026
HOU
George Bush Intercontinental Houston Airport
₹15,888
per person
✕ Non-refundable9 fare options
American Airlines
AA-2920
16:39
05/11/2026
SNA
Ontario International Airport
7h 20m
1 Stop
⏱ DFW · 1h 6mDFW Airport
23:59
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹15,888
per person
✕ Non-refundable9 fare options
American Airlines
AA-2916
14:42
05/11/2026
SNA
Ontario International Airport
7h 47m
1 Stop
⏱ DFW · 1h 24mDFW Airport
22:29
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹15,888
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-3828
08:30
05/11/2026
LAX
Ontario International Airport
5h 10m
Non-stop
13:40
05/11/2026
HOU
George Bush Intercontinental Houston Airport
₹16,155
per person
✕ Non-refundable9 fare options
Alaska Airlines
AS-544
07:00
05/11/2026
ONT
Ontario International Airport
10h 18m
1 Stop
⏱ PDX · 1h 28mPDX Airport
17:18
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹16,337
per person
✕ Non-refundable8 fare options
Frontier Airlines
F9-1262
10:50
05/11/2026
ONT
Ontario International Airport
10h 20m
1 Stop
⏱ DEN · 3h 15mDEN Airport
21:10
05/11/2026
IAH
George Bush Intercontinental Houston Airport
₹16,854
per person
✕ Non-refundable🔥 Last 3 seats
Southwest Airlines
WN-4272
11:40
05/11/2026
SNA
Ontario International Airport
7h 0m
1 Stop
⏱ LAS · 0h 40mLAS Airport
18:40
05/11/2026
HOU
George Bush Intercontinental Houston Airport
₹17,283
per person
✓ Refundable8 fare options
😕 No flights match your filters.
Ontario (ONT)
📍 Ontario International Airport
🌍 United States
🕐 GMT -8
📐 Latitude: 34.055999755859375
📐 Longitude: -117.60099792480469
Houston (IAH)
📍 George Bush Intercontinental Houston Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 29.984399795532227
📐 Longitude: -95.34140014648438
✈ Distance: Ontario,USA to Houston, TX,USA — 2142.26 km
📅 Results on this page are loaded for 11 May 2026. Click View all flights for the complete live search.
Ontario to Houston — what to expect when booking
The ONT–IAH route is served by multiple carriers throughout the year.
Fares on this route can move quickly — a price available now may not be there 30 minutes later.
If your dates are flexible, try shifting your departure by a day or two using the date strip above.
Mid-week departures often show lower base fares compared to weekend starts on many routes.
The distance between Ontario,USA and Houston, TX,USA is approximately
2142.26 km.
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❓ Frequently asked questions — Ontario to Houston flights
Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.
The straight-line distance between Ontario,USA (ONT) and Houston, TX,USA (IAH) is approximately 2142.26 km. Actual flying distance may vary slightly depending on routing.
Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.
Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.