How long is the flight from Portsmouth to Houston?

A quick flight from Portsmouth to Houston can take about 17h 37m. Delta provides one of the quickest options available for as low as £946. 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.

£527+ Cheap Flights from Portsmouth to Houston

Cheap flight deals from Portsmouth to Houston

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 6 September 2026.

Thu 1/1020:00 -

2 stops44h 58m

Thu 8/1007:34 -

2 stops29h 56m

Deal found 3/9£859

Wed 28/1008:40 -

2 stops17h 37m

Thu 24/1215:25 -

1 stop19h 35m

Deal found 3/9£946

Wed 28/1008:40 -

2 stops30h 28m

Wed 23/1218:50 -

2 stops40h 10m

Deal found 3/9£946

Mon 19/1017:20 -

1 stop26h 00m

Mon 26/1016:05 -

1 stop20h 00m

Deal found 4/9£954

Mon 19/1009:05 -

2 stops20h 50m

Mon 26/1009:40 -

2 stops17h 30m

Deal found 4/9£959

Wed 11/1115:05 -

2 stops29h 00m

Sun 15/1115:50 -

2 stops21h 20m

Deal found 3/9£960

Wed 21/1009:15 -

2 stops19h 48m

Wed 28/1015:09 -

2 stops20h 56m

Deal found 6/9£960

Thu 29/1017:35 -

1 stop25h 30m

Thu 24/1208:00 -

2 stops27h 00m

Deal found 3/9£972

Tue 27/1008:40 -

1 stop34h 30m

Thu 24/1205:10 -

2 stops21h 00m

Deal found 3/9£975

Wed 28/1008:40 -

2 stops17h 37m

Fri 25/1206:20 -

2 stops20h 35m

Deal found 3/9£976

Thu 29/1017:35 -

2 stops34h 28m

Wed 23/1218:50 -

2 stops40h 10m

Deal found 3/9£976

Tue 27/1008:40 -

1 stop34h 30m

Wed 23/1219:18 -

2 stops30h 52m

Deal found 3/9£979

Find flight deals from Portsmouth to Houston

Round-trip from	£859
One-way from	£527
Popular in	June
Cheapest in	February
Average price	£692

Aer Lingus
1/10-8/10
4 total stops
74h 54m total
Portsmouth to Houston

Search Deals

23/10-31/12
3 total stops
48h 00m total
Portsmouth to Houston

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£63 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

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Fri 23/10

20:00-14:00

3 stops48h 00m

Houston George Bush Intcntl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£527

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Sat 28/11

10:15-14:05

2 stops57h 50m

Houston George Bush Intcntl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£715

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Wed 28/10

08:40-21:17

2 stops17h 37m

Houston George Bush Intcntl

Thu 24/12

15:25-17:00

1 stop19h 35m

£946

SouthamptonHouston

SOU Southampton Eastleigh - HOU Houston Hobby

SOUHOU

Southampton Eastleigh

Wed 28/10

08:40-10:08

2 stops30h 28m

Houston Hobby

Wed 23/12

18:50-17:00

2 stops40h 10m

£946

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Mon 19/10

09:05-23:55

2 stops20h 50m

Houston George Bush Intcntl

Mon 26/10

09:40-08:10

2 stops17h 30m

£959

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

15:50-14:35

2 stops16h 45m

£960

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

£960

SouthamptonHouston

SOU Southampton Eastleigh - HOU Houston Hobby

SOUHOU

Southampton Eastleigh

Wed 21/10

09:15-23:03

2 stops19h 48m

Houston Hobby

Wed 28/10

15:09-17:05

2 stops20h 56m

£960

SouthamptonHouston

SOU Southampton Eastleigh - IAH Houston George Bush Intcntl

SOUIAH

Southampton Eastleigh

Fri 30/10

08:40-14:05

1 stop34h 25m

Houston George Bush Intcntl

Thu 24/12

06:20-08:10

2 stops19h 50m

£972

SouthamptonHouston

SOU Southampton Eastleigh - HOU Houston Hobby

SOUHOU

Southampton Eastleigh

Fri 30/10

08:40-23:03

2 stops19h 23m

Houston Hobby

Wed 23/12

18:50-17:00

2 stops40h 10m

£976

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 16 resultsSorted 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 17h 37m. Delta provides one of the quickest options available for as low as £946. 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.

See more FAQs

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Alternative routes for Portsmouth to Houston

Heathrow to Dallas/Fort Worth flights

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Southampton to George Bush Intcntl flights

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Top 10 airlines flying from Portsmouth to Houston

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest£40	Average£93	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
WestJet	Cheapest£169	Average£779	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Finnair	Cheapest£311	Average£902	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£362	Average£600	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Virgin Atlantic	Cheapest£384	Average£693	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£441	Average£1,029	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
JetBlue	Cheapest£525	Average£716	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Air Canada	Cheapest£549	Average£711	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest£559	Average£835	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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

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Cheap flights from Portsmouth to Houston from £527

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/10. 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 6 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 6 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 6 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 6 September 2026.

Last-minute flights from Portsmouth to HoustonDiscover last-minute flight deals from Portsmouth to Houston. Data last updated 6 September 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Houston. Data last updated 6 September 2026 and is based on user searches.

One-way flights from Portsmouth to HoustonSearch for one-way flight options from Portsmouth to Houston. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Search for one-way flight options from Portsmouth to Houston. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

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Best time to book a flight from Portsmouth to Houston

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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 6 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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Complete your trip

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Direct flights to Texas

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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 6 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 6 September 2026.

Last-minute flights from Portsmouth to Houston
Discover last-minute flight deals from Portsmouth to Houston. Data last updated 6 September 2026 and is based on user searches.

One-way flights from Portsmouth to Houston
Search for one-way flight options from Portsmouth to Houston. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.