Frontier's UpFront Plus offers a guaranteed empty middle seat for extra comfort.
Early check-in helps secure your seat due to frequent overbooking.

Round-trip from | $94 (CheapOair) |
|---|---|
One-way from | $58 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $265 |
Fly from
Fly to
Route
Depart
Return
Price
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
jue. 1/22
8:15 am-12:00 pm
Nonstop2h 45m
Houston George Bush Intcntl
dom. 1/25
6:45 am-12:10 pm
1 stop6h 25m
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
sáb. 1/17
1:31 pm-5:10 pm
Nonstop2h 39m
Houston George Bush Intcntl
dom. 1/18
4:45 pm-6:49 pm
Nonstop3h 04m
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
lun. 1/19
10:16 pm-8:01 pm
2 stops20h 45m
Houston George Bush Intcntl
vie. 1/23
2:43 pm-4:56 pm
Nonstop3h 13m
PhoenixHouston
PHX - HOU
PHXHOU
Phoenix Sky Harbor Intl
sáb. 1/10
5:35 pm-8:55 pm
Nonstop2h 20m
Houston Hobby
dom. 1/18
6:15 am-8:15 am
Nonstop3h 00m
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
dom. 2/15
6:01 pm-9:36 pm
Nonstop2h 35m
Houston George Bush Intcntl
mar. 2/24
8:20 pm-10:29 pm
Nonstop3h 09m
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
vie. 1/2
5:50 pm-9:33 pm
Nonstop2h 43m
Houston George Bush Intcntl
lun. 1/5
2:22 pm-9:16 pm
1 stop7h 54m
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
jue. 12/25
4:04 pm-11:51 pm
1 stop6h 47m
Houston George Bush Intcntl
jue. 1/1
6:00 am-2:54 pm
1 stop9h 54m
PhoenixHouston
PHX - HOU
PHXHOU
Phoenix Sky Harbor Intl
sáb. 1/17
1:55 pm-10:33 pm
1 stop7h 38m
Houston Hobby
dom. 1/18
5:45 am-12:24 pm
1 stop7h 39m
PhoenixHouston
PHX - HOU
PHXHOU
Phoenix Sky Harbor Intl
dom. 2/22
5:45 am-9:10 am
Nonstop2h 25m
Houston Hobby
dom. 3/1
5:45 am-7:45 am
Nonstop3h 00m
PhoenixHouston
PHX - IAH
PHXIAH
Phoenix Sky Harbor Intl
mié. 1/7
3:35 pm-7:15 pm
Nonstop2h 40m
Houston George Bush Intcntl
mar. 1/13
4:45 pm-6:49 pm
Nonstop3h 04m
The best time to book flights from Phoenix Sky Harbor Intl Airport to Houston is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, March is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Houston (average of $66). Flying from Phoenix Sky Harbor Intl Airport to Houston in June is currently the most expensive (average of $139). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
One of the essential ways to save on airfare from Phoenix Sky Harbor Intl Airport to Houston is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 17% on airfare.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Houston flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Mike,Aug 2025
OKC - AUS
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$186 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$294 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$150 | Average$256 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$287 | FlexibilityNo cancel fee | On-time63% |