Compare live prices for ONT to IAH on
Wed, 15 Apr 2026. Use the search panel
to change origin, destination, passengers, cabin and trip type instantly.
ONT → IAHApprox. 2142.26 km15 Apr 2026Live inventory
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ONT→IAH
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Showing 25
of 138
live flights
Delta Air Lines
DL-1143
09:10
04/15/2026
LAX
5h 14m
Non-stop
14:24
04/15/2026
IAH
₹12,901
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-3654
12:55
04/15/2026
ONT
5h 0m
Non-stop
17:55
04/15/2026
HOU
₹13,804
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-4299
08:45
04/15/2026
LAX
5h 10m
Non-stop
13:55
04/15/2026
HOU
₹13,804
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-2058
13:00
04/15/2026
LAX
5h 10m
Non-stop
18:10
04/15/2026
HOU
₹13,804
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-2854
23:50
04/15/2026
LAX
5h 10m
Non-stop
05:00
04/16/2026
+1
HOU
₹13,804
per person
✕ Non-refundable9 fare options
Delta Air Lines
DL-475
13:29
04/15/2026
ONT
8h 5m
1 Stop
⏱ SLC · 1h 20m
21:34
04/15/2026
IAH
₹13,815
per person
✕ Non-refundable8 fare options
Delta Air Lines
DL-828
12:40
04/15/2026
BUR
8h 54m
1 Stop
⏱ SLC · 1h 55m
21:34
04/15/2026
IAH
₹13,907
per person
✕ Non-refundable4 fare options
Delta Air Lines
DL-498
13:59
04/15/2026
BUR
10h 0m
1 Stop
⏱ ATL · 1h 16m
23:59
04/15/2026
IAH
₹13,907
per person
✕ Non-refundable4 fare options
American Airlines
AA-4143
16:52
04/15/2026
ONT
6h 41m
1 Stop
⏱ PHX · 0h 32m
23:33
04/15/2026
IAH
₹14,025
per person
✓ Refundable19 fare options
American Airlines
AA-2773
23:59
04/15/2026
ONT
9h 41m
1 Stop
⏱ DFW · 3h 34m
09:40
04/16/2026
+1
IAH
₹14,025
per person
✓ Refundable19 fare options
Southwest Airlines
WN-4294
12:50
04/15/2026
LGB
5h 5m
Non-stop
17:55
04/15/2026
HOU
₹14,455
per person
✕ Non-refundable9 fare options
Delta Air Lines
DL-1116
12:55
04/15/2026
LGB
8h 39m
1 Stop
⏱ SLC · 1h 45m
21:34
04/15/2026
IAH
₹14,466
per person
✕ Non-refundable4 fare options
United Airlines
UA-1936
06:05
04/15/2026
ONT
5h 10m
Non-stop
11:15
04/15/2026
IAH
₹15,580
per person
✕ Non-refundable🔥 Last 3 seats11 fare options
Delta Air Lines
DL-665
12:49
04/15/2026
ONT
10h 19m
1 Stop
⏱ ATL · 1h 59m
23:08
04/15/2026
HOU
₹15,680
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-2846
11:30
04/15/2026
LAX
6h 35m
1 Stop
⏱ ELP · 0h 40m
18:05
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-257
15:45
04/15/2026
ONT
6h 35m
1 Stop
⏱ PHX · 0h 50m
22:20
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-556
12:40
04/15/2026
ONT
7h 20m
1 Stop
⏱ PHX · 1h 35m
20:00
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-3664
10:30
04/15/2026
ONT
7h 45m
1 Stop
⏱ PHX · 2h 5m
18:15
04/15/2026
HOU
₹15,683
per person
✓ Refundable🔥 Last 2 seats4 fare options
Southwest Airlines
WN-1474
14:25
04/15/2026
ONT
7h 55m
1 Stop
⏱ PHX · 2h 15m
22:20
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-225
14:20
04/15/2026
LAX
7h 5m
1 Stop
⏱ LAS · 0h 55m
21:25
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-223
21:40
04/15/2026
LAX
7h 10m
1 Stop
⏱ LAS · 1h 0m
04:50
04/16/2026
+1
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-424
21:45
04/15/2026
ONT
7h 5m
1 Stop
⏱ LAS · 1h 0m
04:50
04/16/2026
+1
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-249
10:55
04/15/2026
ONT
7h 15m
1 Stop
⏱ LAS · 1h 5m
18:10
04/15/2026
HOU
₹15,683
per person
✓ Refundable🔥 Last 4 seats4 fare options
Southwest Airlines
WN-3075
14:10
04/15/2026
ONT
7h 15m
1 Stop
⏱ LAS · 1h 10m
21:25
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 fare options
Southwest Airlines
WN-3281
09:35
04/15/2026
LAX
7h 15m
1 Stop
⏱ DAL · 0h 55m
16:50
04/15/2026
HOU
₹15,683
per person
✓ Refundable4 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 15 Apr 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.