Compare live prices for IAH to ONT. Use the search panel
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IAH → ONTApprox. 2142.26 km11 May 2026Live inventory
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Showing 25
of 113
live flights
Southwest Airlines
WN-3435
21:50
05/11/2026
HOU
George Bush Intercontinental Houston Airport
9h 50m
1 Stop
⏱ LAS · 7h 25mLAS Airport
07:40
05/12/2026
+1
LGB
Ontario International Airport
₹13,140
per person
✓ Refundable4 fare options
Southwest Airlines
WN-3172
08:10
05/11/2026
HOU
George Bush Intercontinental Houston Airport
1h 30m
Non-stop
09:40
05/11/2026
LGB
Ontario International Airport
₹13,441
per person
✕ Non-refundable5 fare options
Delta Air Lines
DL-1216
06:15
05/11/2026
IAH
George Bush Intercontinental Houston Airport
1h 38m
Non-stop
07:53
05/11/2026
LAX
Ontario International Airport
₹15,241
per person
✕ Non-refundable
Delta Air Lines
DL-1143
16:08
05/11/2026
IAH
George Bush Intercontinental Houston Airport
1h 42m
Non-stop
17:50
05/11/2026
LAX
Ontario International Airport
₹15,241
per person
✕ Non-refundable
Southwest Airlines
WN-165
05:55
05/11/2026
HOU
George Bush Intercontinental Houston Airport
1h 35m
Non-stop
07:30
05/11/2026
LAX
Ontario International Airport
₹15,677
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-241
21:55
05/11/2026
HOU
George Bush Intercontinental Houston Airport
1h 35m
Non-stop
23:30
05/11/2026
LAX
Ontario International Airport
₹15,677
per person
✕ Non-refundable5 fare options
alaskaairlines
AS-1421
18:18
05/11/2026
IAH
George Bush Intercontinental Houston Airport
5h 30m
1 Stop
⏱ PDX · 0h 40mPDX Airport
23:48
05/11/2026
ONT
Ontario International Airport
₹16,226
per person
✕ Non-refundable6 fare options
American Airlines
AA-2157
19:59
05/11/2026
IAH
George Bush Intercontinental Houston Airport
3h 47m
1 Stop
⏱ DFW · 1h 8mDFW Airport
23:46
05/11/2026
ONT
Ontario International Airport
₹16,354
per person
✓ Refundable11 fare options
Southwest Airlines
WN-1991
18:40
05/11/2026
HOU
George Bush Intercontinental Houston Airport
2h 55m
1 Stop
⏱ PHX · 0h 50mPHX Airport
21:35
05/11/2026
SNA
Ontario International Airport
₹17,186
per person
✓ Refundable4 fare options
Southwest Airlines
WN-2394
06:15
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 20m
1 Stop
⏱ PHX · 0h 55mPHX Airport
09:35
05/11/2026
SNA
Ontario International Airport
₹17,186
per person
✓ Refundable4 fare options
Southwest Airlines
WN-41
18:25
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 55m
1 Stop
⏱ LAS · 1h 35mLAS Airport
22:20
05/11/2026
SNA
Ontario International Airport
₹17,186
per person
✓ Refundable4 fare options
Southwest Airlines
WN-2750
11:00
05/11/2026
HOU
George Bush Intercontinental Houston Airport
2h 55m
1 Stop
⏱ AUS · 0h 40mAUS Airport
13:55
05/11/2026
LAX
Ontario International Airport
₹17,557
per person
✓ Refundable🔥 Last 1 seats4 fare options
Southwest Airlines
WN-582
20:15
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 5m
1 Stop
⏱ PHX · 0h 45mPHX Airport
23:20
05/11/2026
LAX
Ontario International Airport
₹17,557
per person
✕ Non-refundable
Southwest Airlines
WN-2394
06:15
05/11/2026
HOU
George Bush Intercontinental Houston Airport
4h 0m
1 Stop
⏱ PHX · 1h 40mPHX Airport
10:15
05/11/2026
LAX
Ontario International Airport
₹17,557
per person
✕ Non-refundable🔥 Last 1 seats
Southwest Airlines
WN-2340
19:50
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 25m
1 Stop
⏱ LAS · 0h 55mLAS Airport
23:15
05/11/2026
LAX
Ontario International Airport
₹17,557
per person
✓ Refundable4 fare options
Southwest Airlines
WN-41
18:25
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 35m
1 Stop
⏱ LAS · 1h 5mLAS Airport
22:00
05/11/2026
LAX
Ontario International Airport
₹18,024
per person
✓ Refundable🔥 Last 4 seats4 fare options
Southwest Airlines
WN-3414
13:40
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 55m
1 Stop
⏱ PHX · 1h 40mPHX Airport
17:35
05/11/2026
LAX
Ontario International Airport
₹18,024
per person
✕ Non-refundable
Southwest Airlines
WN-582
20:15
05/11/2026
HOU
George Bush Intercontinental Houston Airport
2h 50m
1 Stop
⏱ PHX · 0h 45mPHX Airport
23:05
05/11/2026
ONT
Ontario International Airport
₹18,213
per person
✓ Refundable🔥 Last 4 seats4 fare options
Southwest Airlines
WN-2340
19:50
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 15m
1 Stop
⏱ LAS · 1h 0mLAS Airport
23:05
05/11/2026
ONT
Ontario International Airport
₹18,213
per person
✓ Refundable4 fare options
Southwest Airlines
WN-2312
06:05
05/11/2026
HOU
George Bush Intercontinental Houston Airport
3h 50m
1 Stop
⏱ DEN · 1h 0mDEN Airport
09:55
05/11/2026
ONT
Ontario International Airport
₹18,213
per person
✓ Refundable4 fare options
Southwest Airlines
WN-36
15:00
05/11/2026
HOU
George Bush Intercontinental Houston Airport
6h 55m
2 Stops
⏱ DAL · 1h 20mDAL Airport⏱ DEN · 1h 45mDEN Airport
21:55
05/11/2026
SNA
Ontario International Airport
₹18,584
per person
✓ Refundable4 fare options
United Airlines
UA-2095
22:02
05/11/2026
IAH
George Bush Intercontinental Houston Airport
1h 42m
Non-stop
23:44
05/11/2026
LAX
Ontario International Airport
₹18,972
per person
✕ Non-refundable🔥 Last 3 seats3 fare options
United Airlines
UA-1706
20:00
05/11/2026
IAH
George Bush Intercontinental Houston Airport
1h 50m
Non-stop
21:50
05/11/2026
LAX
Ontario International Airport
₹18,972
per person
✕ Non-refundable🔥 Last 4 seats3 fare options
United Airlines
UA-2388
21:12
05/11/2026
IAH
George Bush Intercontinental Houston Airport
1h 50m
Non-stop
23:02
05/11/2026
LAX
Ontario International Airport
₹18,972
per person
✕ Non-refundable3 fare options
Southwest Airlines
WN-1577
08:05
05/11/2026
HOU
George Bush Intercontinental Houston Airport
1h 25m
Non-stop
09:30
05/11/2026
ONT
Ontario International Airport
₹19,412
per person
✕ Non-refundable🔥 Last 1 seats5 fare options
😕 No flights match your filters.
Houston (IAH)
📍 George Bush Intercontinental Houston Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 29.984399795532227
📐 Longitude: -95.34140014648438
Ontario (ONT)
📍 Ontario International Airport
🌍 United States
🕐 GMT -8
📐 Latitude: 34.055999755859375
📐 Longitude: -117.60099792480469
✈ Distance: Houston, TX,USA to Ontario,USA — 2142.26 km
📅 Results on this page are loaded for 11 May 2026. Click View all flights for the complete live search.
Houston to Ontario — what to expect when booking
The IAH–ONT 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 Houston, TX,USA and Ontario,USA is approximately
2142.26 km.
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❓ Frequently asked questions — Houston to Ontario 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 Houston, TX,USA (IAH) and Ontario,USA (ONT) 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.