How long is the flight from Portsmouth to Houston?

A quick flight from Portsmouth to Houston can take about 30h 15m. British Airways provides one of the quickest options available for as low as £961. Airlines will cover a distance of 4799 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Houston 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 when rainfall is around 81.0 mm.

If weather is an important factor for your trip to Houston, 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).

Can I find deals for flights from Portsmouth to Houston that include hotel bookings?

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

How can I find direct flights from Portsmouth to Houston?

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

Can I find deals for business class flights from Portsmouth to Houston?

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

£961+ Cheap Flights from Portsmouth to Houston

Cheap flight deals from Portsmouth to Houston

Enter your travel dates to find the best prices.

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Cheapest flights from Portsmouth to Houston
Explore the most affordable flight options available from Portsmouth to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Wed 11/1115:05 -

2 stops29h 00m

Sun 15/1115:50 -

2 stops21h 20m

Deal found 17/9£961

Fri 30/1017:35 -

2 stops34h 28m

Fri 6/1111:12 -

2 stops15h 43m

Deal found 15/9£1,050

Thu 29/1008:40 -

2 stops19h 23m

Thu 5/1117:28 -

2 stops33h 27m

Deal found 14/9£1,104

Fri 2/1019:55 -

2 stops23h 30m

Thu 15/1015:40 -

2 stops21h 45m

Deal found 18/9£1,313

Sat 26/1219:55 -

2 stops48h 10m

Fri 1/121:40 -

2 stops34h 50m

Deal found 16/9£1,590

Find flight deals from Portsmouth to Houston

Round-trip from	£961
Popular in	June
Cheapest in	February
Average price	£710

British Airways
11/11-15/11
4 total stops
50h 20m total
Portsmouth to Houston

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£62 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 September 2026

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Cheapflights Fare Finder

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

Fly from

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Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Fri 13/11

19:40-19:55

2 stops30h 15m

Houston George Bush Intcntl

Tue 17/11

15:50-14:35

2 stops16h 45m

£961

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Wed 11/11

15:05-14:05

2 stops29h 00m

Houston George Bush Intcntl

Sun 15/11

15:50-19:10

2 stops21h 20m

£961

SouthamptonHouston

SOU Southampton Eastleigh - HOU Houston Hobby

SOUHOU

Southampton Eastleigh

Fri 30/10

17:35-23:03

2 stops34h 28m

Houston Hobby

Fri 6/11

11:12-08:55

2 stops15h 43m

£1,050

SouthamptonHouston

SOU Southampton Eastleigh - HOU Houston Hobby

SOUHOU

Southampton Eastleigh

Thu 29/10

08:40-23:03

2 stops19h 23m

Houston Hobby

Thu 5/11

17:28-08:55

2 stops33h 27m

£1,104

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Sat 26/12

19:55-14:05

2 stops48h 10m

Houston George Bush Intcntl

Fri 1/1

21:40-14:30

2 stops34h 50m

£1,590

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Sorted by cheapest first

Best time to book a flight from Portsmouth to Houston

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

SOU-IAH

SOU-HOU

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

P0R-HO1

SOU-IAH

SOU-HOU

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Houston as you normally would.

Related info for your journey

How long is the flight from Portsmouth to Houston?
A quick flight from Portsmouth to Houston can take about 30h 15m. British Airways provides one of the quickest options available for as low as £961. Airlines will cover a distance of 4799 mi. This flight may include one or multiple stops.
Can I find deals for flights from Portsmouth to Houston that include hotel bookings?
Yes. In addition to deals on Portsmouth to Houston flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Houston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Houston.
Can I find deals for business class flights from Portsmouth to Houston?
Yes. Cheapflights offers flight deals from Portsmouth to Houston 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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Top 10 airlines flying from Portsmouth to Houston

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest£40	Average£94	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
WestJet	Cheapest£171	Average£788	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Finnair	Cheapest£315	Average£912	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£366	Average£606	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Virgin Atlantic	Cheapest£389	Average£714	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Scandinavian Airlines	Cheapest£420	Average£477	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Air France	Cheapest£437	Average£614	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Iberia	Cheapest£446	Average£1,040	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£531	Average£711	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
United Airlines	Cheapest£565	Average£889	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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Deals for Portsmouth to Houston flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Houston?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portsmouth to Houston.

Can Cheapflights find flights from Portsmouth to Houston with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Houston flexibly with Cheapflights today.

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Cheap flights from Portsmouth to Houston from £961

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Houston

Cheapest flights from Portsmouth to HoustonExplore the most affordable flight options available from Portsmouth to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Explore the most affordable flight options available from Portsmouth to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Portsmouth to HoustonDiscover carefully curated flight deals from Portsmouth to Houston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Discover carefully curated flight deals from Portsmouth to Houston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from Portsmouth to HoustonDiscover last-minute flight deals from Portsmouth to Houston. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Houston. Data last updated 18 September 2026 and is based on user searches.

Find flight deals from Portsmouth to Houston

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

Best time to book a flight from Portsmouth to Houston

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

Cheapflights Insights

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

Find hourly flight availability from Portsmouth to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Houston as you normally would.

Related info for your journey

How long is the flight from Portsmouth to Houston?

Can I find deals for flights from Portsmouth to Houston that include hotel bookings?

How can I find direct flights from Portsmouth to Houston?

Can I find deals for business class flights from Portsmouth to Houston?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portsmouth to Houston

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Complete your trip

Complete your trip to Houston by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Texas

Book a non-stop flight to one of these other cities located in Texas.

Search flights from Portsmouth to Houston by cabin class

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Portsmouth and Houston flights

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Cheapest flights from Portsmouth to Houston
Explore the most affordable flight options available from Portsmouth to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Portsmouth to Houston
Discover carefully curated flight deals from Portsmouth to Houston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from Portsmouth to Houston
Discover last-minute flight deals from Portsmouth to Houston. Data last updated 18 September 2026 and is based on user searches.