In terms of precipitation, rainfall in Houston George Bush Intcntl Airport ranges from 81.0 - 150.0 inches per month. June is typically the wettest month, when rainfall can reach 150.0 mm. February is typically the driest time to visit Houston George Bush Intcntl Airport when rainfall is around 81.0 mm.

If weather is an important factor for your trip to Houston George Bush Intcntl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 12.0 C).

What are the cheapest flights from Portsmouth to Houston George Bush Intcntl Airport?

Looking at all options, your cheapest flight can be booked for £531. While the most popular route (Southampton Eastleigh - Houston George Bush Intcntl) can be booked for £965 on average, our data indicates £1,642 when flying from Portsmouth to Houston George Bush Intcntl Airport.

What are the most reliable airlines from Portsmouth to Houston George Bush Intcntl Airport?

No one likes to see their flight delayed. When booking a flight from Portsmouth to Houston George Bush Intcntl Airport consider choosing Air Canada (87%), Austrian Airlines (80%) or Brussels Airlines (80%) as they are the most reliable in getting you off to your destination on time.

Can I find deals for flights from Portsmouth to George Bush Intcntl that include hotel bookings?

Yes. In addition to deals on Portsmouth to George Bush Intcntl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Portsmouth to George Bush Intcntl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to George Bush Intcntl.

Can I find deals for business class flights from Portsmouth to George Bush Intcntl?

Yes. Cheapflights offers flight deals from Portsmouth to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£883+ Cheap Flights from Portsmouth to Houston George Bush Intcntl Airport

Cheap flight deals from Portsmouth to George Bush Intcntl

Enter your travel dates to find the best prices.

Cheapest

Best

One-way

Cheapest flights from Portsmouth to George Bush Intcntl
Explore the most affordable flight options available from Portsmouth to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Wed 11/1119:40 -

2 stops54h 15m

Sun 15/1115:50 -

2 stops21h 10m

Deal found 30/8£965

Fri 13/1112:35 -

2 stops31h 30m

Tue 17/1115:50 -

2 stops21h 10m

Deal found 26/8£1,001

Tue 13/1017:20 -

1 stop26h 00m

Wed 25/1105:35 -

2 stops29h 15m

Deal found 29/8£1,005

Wed 14/1009:15 -

2 stops16h 47m

Wed 25/1118:19 -

2 stops16h 31m

Deal found 29/8£1,010

Mon 19/1017:20 -

1 stop26h 00m

Tue 1/1211:37 -

2 stops23h 23m

Deal found 27/8£1,023

Wed 21/1009:15 -

2 stops18h 02m

Wed 2/1211:08 -

2 stops15h 02m

Deal found 27/8£1,027

Sat 10/1016:45 -

2 stops26h 40m

Mon 23/1115:50 -

2 stops21h 10m

Deal found 29/8£1,028

Thu 22/1019:30 -

2 stops23h 55m

Tue 1/1221:40 -

2 stops15h 20m

Deal found 27/8£1,031

Mon 12/1017:20 -

1 stop26h 00m

Sun 22/1118:19 -

2 stops16h 31m

Deal found 29/8£1,036

Sat 10/1017:20 -

1 stop26h 00m

Tue 24/1115:05 -

1 stop19h 45m

Deal found 29/8£1,069

Find flight deals from Portsmouth to George Bush Intcntl

Round-trip from	£965
One-way from	£883
Popular in	June
Cheapest in	September
Average price	£899

British Airways
13/11-17/11
4 total stops
52h 40m total
Portsmouth to Houston

Search Deals

British Airways
5/10
2 total stops
34h 55m total
Portsmouth to Houston

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£66 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Fri 13/11

12:35-14:05

2 stops31h 30m

Houston George Bush Intcntl

Tue 17/11

15:50-19:00

2 stops21h 10m

£965

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Wed 11/11

19:40-19:55

2 stops54h 15m

Houston George Bush Intcntl

Sun 15/11

15:50-19:00

2 stops21h 10m

£965

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Mon 12/10

09:05-13:20

1 stop34h 15m

Houston George Bush Intcntl

Thu 26/11

06:45-08:10

2 stops19h 25m

£1,005

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Tue 13/10

17:20-13:20

1 stop26h 00m

Houston George Bush Intcntl

Wed 25/11

05:35-16:50

2 stops29h 15m

£1,005

Fastest return journey

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Wed 14/10

09:15-20:02

2 stops16h 47m

Houston George Bush Intcntl

Tue 24/11

11:35-08:10

2 stops14h 35m

£1,010

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Sun 25/10

17:30-14:10

1 stop25h 40m

Houston George Bush Intcntl

Tue 1/12

12:30-17:00

2 stops22h 30m

£1,023

Cheapest one-way

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Tue 6/10

14:25-13:25

2 stops29h 00m

£883

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Sun 11/10

11:05-13:25

2 stops32h 20m

£968

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Sun 13/9

14:35-13:25

2 stops28h 50m

£1,041

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Sun 13/9

09:15-13:20

1 stop34h 05m

£1,557

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from Portsmouth to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Portsmouth with our price prediction graph.

SOU-IAH

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Houston George Bush Intcntl Airport

P0R-IAH

SOU-IAH

What is the cheapest time of day to fly from P0R to IAH?

When flying from Portsmouth to Houston George Bush Intcntl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Portsmouth to Houston George Bush Intcntl Airport

The most flights from P0R to IAH are scheduled on a Friday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

Related info for your journey

How long is the flight from Portsmouth to Houston George Bush Intcntl Airport?
A quick flight from Portsmouth to Houston George Bush Intcntl Airport can take about 31h 30m. British Airways provides one of the quickest options available for as low as £965. Airlines will cover a distance of 4799 mi.
What are the most reliable airlines from Portsmouth to Houston George Bush Intcntl Airport?
No one likes to see their flight delayed. When booking a flight from Portsmouth to Houston George Bush Intcntl Airport consider choosing Air Canada (87%), Austrian Airlines (80%) or Brussels Airlines (80%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Portsmouth to Houston George Bush Intcntl Airport?
Looking at all options, your cheapest flight can be booked for £531. While the most popular route (Southampton Eastleigh - Houston George Bush Intcntl) can be booked for £965 on average, our data indicates £1,642 when flying from Portsmouth to Houston George Bush Intcntl Airport.
Can I find deals for flights from Portsmouth to George Bush Intcntl that include hotel bookings?
Yes. In addition to deals on Portsmouth to George Bush Intcntl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to George Bush Intcntl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to George Bush Intcntl.
Can I find deals for business class flights from Portsmouth to George Bush Intcntl?
Yes. Cheapflights offers flight deals from Portsmouth to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Alternative routes for Portsmouth to George Bush Intcntl

Top 10 airlines flying from Portsmouth to George Bush Intcntl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest£58	Average£106	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
KLM	Cheapest£361	Average£599	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Virgin Atlantic	Cheapest£384	Average£646	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Scandinavian Airlines	Cheapest£415	Average£472	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Iberia	Cheapest£481	Average£957	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£534	Average£719	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
United Airlines	Cheapest£558	Average£844	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Brussels Airlines	Cheapest£562	Average£792	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
British Airways	Cheapest£573	Average£781	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£575	Average£910	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

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How does Cheapflights help users find flights from Portsmouth to George Bush Intcntl?

Cheapflights makes it easy to find Portsmouth to George Bush Intcntl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to George Bush Intcntl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to George Bush Intcntl from Portsmouth.

Can Cheapflights find flights from Portsmouth to George Bush Intcntl with no change fees?

Certainly. Search results for flights to George Bush Intcntl from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Cheap flights from Portsmouth to Houston George Bush Intcntl Airport from £883

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to George Bush Intcntl

Cheapest flights from Portsmouth to George Bush IntcntlExplore the most affordable flight options available from Portsmouth to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Explore the most affordable flight options available from Portsmouth to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from Portsmouth to George Bush IntcntlDiscover carefully curated flight deals from Portsmouth to George Bush Intcntl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from Portsmouth to George Bush Intcntl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

One-way flights from Portsmouth to George Bush IntcntlSearch for one-way flight options from Portsmouth to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Search for one-way flight options from Portsmouth to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Find flight deals from Portsmouth to George Bush Intcntl

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Use the filters below to find and compare flights from Portsmouth to Houston George Bush Intcntl Airport that are best for you.

Best time to book a flight from Portsmouth to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Portsmouth with our price prediction graph.

Cheapflights Insights

What is the cheapest time of day to fly from P0R to IAH?

Find hourly flight availability from Portsmouth to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 August 2026.

When flying from Portsmouth to Houston George Bush Intcntl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Portsmouth to Houston George Bush Intcntl Airport

The most flights from P0R to IAH are scheduled on a Friday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

Related info for your journey

How long is the flight from Portsmouth to Houston George Bush Intcntl Airport?

What are the most reliable airlines from Portsmouth to Houston George Bush Intcntl Airport?

What are the cheapest flights from Portsmouth to Houston George Bush Intcntl Airport?

Can I find deals for flights from Portsmouth to George Bush Intcntl that include hotel bookings?

How can I find direct flights from Portsmouth to George Bush Intcntl?

Can I find deals for business class flights from Portsmouth to George Bush Intcntl?

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Alternative routes for Portsmouth to George Bush Intcntl

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Direct flights to Texas

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Search flights from Portsmouth to George Bush Intcntl by cabin class

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Other flights to George Bush Intcntl

Explore flights to George Bush Intcntl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 31 August 2026.

Portsmouth and George Bush Intcntl flights

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Cheapest flights from Portsmouth to George Bush Intcntl
Explore the most affordable flight options available from Portsmouth to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2026.

Best flights from Portsmouth to George Bush Intcntl
Discover carefully curated flight deals from Portsmouth to George Bush Intcntl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

One-way flights from Portsmouth to George Bush Intcntl
Search for one-way flight options from Portsmouth to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.