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Cheap flights from Portsmouth to Houston from £847

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 24/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HOU
27 Jul — 3 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Houston

Enter your travel dates to find the best prices.

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 27 June 2026.

Wed 9/919:30
SOU
-
IAH
2 stops29h 50m
British Airways
Sun 13/921:05
IAH
-
SOU
2 stops29h 20m
British Airways
Deal found 22/6£926
Thu 6/809:15
SOU
-
HOU
2 stops18h 50m
Delta
Thu 13/817:20
HOU
-
SOU
2 stops18h 15m
Delta
Deal found 25/6£1,395
Tue 14/715:15
SOU
-
IAH
2 stops28h 10m
British Airways
Fri 24/715:30
IAH
-
SOU
2 stops18h 20m
British Airways
Deal found 24/6£1,556
Sat 8/820:00
SOU
-
HOU
2 stops29h 44m
Multiple Airlines
Sat 15/818:14
HOU
-
SOU
2 stops43h 16m
Multiple Airlines
Deal found 24/6£1,567
Sun 20/911:05
SOU
-
IAH
2 stops38h 10m
British Airways
Sun 27/921:05
IAH
-
SOU
2 stops17h 50m
British Airways
Deal found 25/6£1,621
Sun 20/911:05
SOU
-
IAH
2 stops38h 10m
British Airways
Thu 1/1015:40
IAH
-
SOU
2 stops17h 05m
British Airways
Deal found 25/6£1,623
Tue 22/915:15
SOU
-
IAH
2 stops28h 10m
British Airways
Tue 29/921:05
IAH
-
SOU
2 stops16h 20m
British Airways
Deal found 25/6£1,624
Sun 20/911:05
SOU
-
IAH
2 stops38h 10m
British Airways
Fri 2/1021:10
IAH
-
SOU
2 stops34h 55m
British Airways
Deal found 25/6£1,630
Sat 19/916:45
SOU
-
IAH
2 stops56h 30m
British Airways
Sun 27/921:05
IAH
-
SOU
2 stops17h 50m
British Airways
Deal found 25/6£1,633
Sat 19/916:45
SOU
-
IAH
2 stops56h 30m
British Airways
Thu 1/1015:40
IAH
-
SOU
2 stops17h 05m
British Airways
Deal found 25/6£1,634
Sat 19/906:45
SOU
-
IAH
2 stops18h 30m
British Airways
Sat 26/921:05
IAH
-
SOU
2 stops17h 50m
British Airways
Deal found 25/6£1,636
Sat 19/916:45
SOU
-
IAH
2 stops56h 30m
British Airways
Fri 2/1021:10
IAH
-
SOU
2 stops41h 45m
British Airways
Deal found 25/6£1,640

Find flight deals from Portsmouth to Houston

Keep the following information in mind while searching for Portsmouth to Houston flight deals. Data was last updated 27 June 2026.

Round-trip from

£926

One-way from

£847

Popular in

June

Cheapest in

September

Average price

£980
British Airways
  • British Airways
  • 9/9-13/9
  • 4 total stops
  • 59h 10m total
  • Portsmouth to Houston
Search Deals
British Airways
  • British Airways
  • 24/12
  • 2 total stops
  • 37h 15m total
  • Portsmouth to Houston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Houston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 June 2026.
Use the filters below to find and compare flights from Portsmouth to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Fri 11/9

08:55-19:15

2 stops40h 20m

Houston George Bush Intcntl

Mon 14/9

15:30-19:00

2 stops21h 30m

£926

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Wed 9/9

19:30-19:20

2 stops29h 50m

Houston George Bush Intcntl

Sun 13/9

21:05-08:25

2 stops29h 20m

£926
Fastest return journey

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Thu 6/8

09:15-22:05

2 stops18h 50m

Houston Hobby

Thu 13/8

17:20-17:35

2 stops18h 15m

£1,395

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Tue 14/7

15:15-13:25

2 stops28h 10m

Houston George Bush Intcntl

Fri 24/7

15:30-15:50

2 stops18h 20m

£1,556

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Sat 8/8

20:00-19:44

2 stops29h 44m

Houston Hobby

Sat 15/8

18:14-19:30

2 stops43h 16m

£1,567

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Mon 21/9

06:50-13:25

2 stops36h 35m

Houston George Bush Intcntl

Thu 1/10

15:40-14:45

2 stops17h 05m

£1,623

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Wed 23/9

14:25-19:20

2 stops34h 55m

Houston George Bush Intcntl

Thu 1/10

15:40-14:45

2 stops17h 05m

£1,623

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Mon 21/9

06:50-19:15

2 stops18h 25m

Houston George Bush Intcntl

Fri 2/10

21:10-14:05

2 stops34h 55m

£1,630

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Sun 20/9

11:05-19:15

2 stops38h 10m

Houston George Bush Intcntl

Fri 2/10

21:10-14:05

2 stops34h 55m

£1,630

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Tue 22/9

14:25-13:25

2 stops29h 00m

Houston George Bush Intcntl

Fri 2/10

21:10-20:55

2 stops41h 45m

£1,630

Flights are sorted by cheapest return flights first.

Deals found on 22/6

Showing 1-10 of 24 resultsSorted by cheapest first
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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.
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

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 27 June 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

Find useful and relevant information for your journey from Portsmouth to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portsmouth to Houston?

    A quick flight from Portsmouth to Houston can take about 18h 50m. British Airways provides one of the quickest options available for as low as £1,395. Airlines will cover a distance of 4813 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portsmouth to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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Southend to Dallas/Fort Worth flights
Newcastle upon Tyne to Dallas/Fort Worth flights
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Heathrow to McAllen flights
Southend to George Bush Intcntl flights
Birmingham to George Bush Intcntl flights
Gatwick to El Paso flights
London City to El Paso flights
London City to Love Field flights
Manchester to San Antonio flights

Top 10 airlines flying from Portsmouth to Houston

Discover the top 10 airlines that operate flights from Portsmouth to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 June 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£41Average£95FlexibilityNo cancel feeOn-time62%
Search Frontier flights
WestJetCheapest£173Average£798FlexibilityNo cancel feeOn-time60%
Search WestJet flights
IberiaCheapest£355Average£1,122FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£394Average£757FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£492Average£818FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£524Average£720FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£526Average£849FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£562Average£598FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Brussels AirlinesCheapest£579Average£827FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£586Average£828FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Houston?

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.

Can Cheapflights notify me if prices for flights from Portsmouth to Houston become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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