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Cheap flights from Portsmouth to Houston from £484

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HOU
4 Jun — 11 Jun1
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 5 May 2026.

Tue 2/609:20
SOU
-
IAH
2 stops34h 06m
Multiple Airlines
Tue 9/617:44
IAH
-
SOU
2 stops32h 56m
Multiple Airlines
Deal found 5/5£907
Tue 19/509:20
SOU
-
IAH
2 stops20h 28m
Multiple Airlines
Sun 24/517:44
IAH
-
SOU
2 stops32h 56m
Multiple Airlines
Deal found 2/5£1,054
Tue 2/617:20
SOU
-
IAH
1 stop26h 00m
KLM
Tue 9/615:25
IAH
-
SOU
1 stop19h 25m
KLM
Deal found 5/5£1,066
Thu 21/509:20
SOU
-
IAH
2 stops20h 32m
Aer Lingus
Mon 25/506:02
IAH
-
SOU
2 stops44h 03m
Aer Lingus
Deal found 5/5£1,130
Wed 30/906:50
SOU
-
IAH
2 stops18h 25m
British Airways
Sun 4/1021:10
IAH
-
SOU
2 stops17h 45m
British Airways
Deal found 30/4£1,132
Tue 19/517:20
SOU
-
IAH
1 stop26h 00m
KLM
Sun 24/516:00
IAH
-
SOU
2 stops34h 35m
KLM
Deal found 2/5£1,139
Thu 21/517:20
SOU
-
IAH
1 stop26h 00m
Virgin Atlantic
Mon 25/515:25
IAH
-
SOU
1 stop19h 25m
Virgin Atlantic
Deal found 5/5£1,162
Thu 21/509:05
SOU
-
IAH
1 stop34h 15m
KLM
Mon 25/510:45
IAH
-
SOU
2 stops15h 50m
KLM
Deal found 5/5£1,164
Thu 21/509:05
SOU
-
HOU
2 stops19h 21m
Delta
Mon 25/513:06
HOU
-
SOU
2 stops21h 44m
Delta
Deal found 5/5£1,254
Tue 19/509:05
SOU
-
HOU
2 stops19h 21m
KLM
Sun 24/517:04
HOU
-
SOU
2 stops17h 46m
KLM
Deal found 2/5£1,326
Fri 19/620:00
SOU
-
HOU
2 stops29h 51m
Multiple Airlines
Fri 26/612:50
HOU
-
SOU
2 stops22h 00m
Multiple Airlines
Deal found 5/5£1,687
Thu 18/609:05
SOU
-
HOU
2 stops18h 38m
Delta
Thu 25/613:10
HOU
-
SOU
2 stops21h 40m
Delta
Deal found 4/5£1,689

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 5 May 2026.

Round-trip from

£907

One-way from

£484

Popular in

July

Cheapest in

February

Average price

£746
2/6-9/6
  • 2/6-9/6
  • 4 total stops
  • 67h 02m total
  • Portsmouth to Houston
Search Deals
2/6
  • 2/6
  • 3 total stops
  • 42h 50m total
  • Portsmouth to Houston
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£68 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 5 May 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

Tue 19/5

09:20-23:48

2 stops20h 28m

Houston George Bush Intcntl

Sun 24/5

17:44-08:40

2 stops32h 56m

£1,054

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Tue 2/6

17:20-13:20

1 stop26h 00m

Houston George Bush Intcntl

Tue 9/6

15:25-16:50

1 stop19h 25m

£1,066
Fastest return journey

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Wed 30/9

06:50-19:15

2 stops18h 25m

Houston George Bush Intcntl

Sun 4/10

21:10-20:55

2 stops17h 45m

£1,132

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 21/5

17:20-13:20

1 stop26h 00m

Houston George Bush Intcntl

Mon 25/5

15:25-16:50

1 stop19h 25m

£1,162

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 21/5

09:05-13:20

1 stop34h 15m

Houston George Bush Intcntl

Mon 25/5

10:45-08:35

2 stops15h 50m

£1,164

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Mon 1/6

17:20-13:20

1 stop26h 00m

Houston George Bush Intcntl

Mon 8/6

18:37-16:50

2 stops16h 13m

£1,166

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Tue 19/5

17:20-13:20

1 stop26h 00m

Houston George Bush Intcntl

Sun 24/5

15:25-16:50

1 stop19h 25m

£1,200

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Thu 21/5

09:05-22:26

2 stops19h 21m

Houston Hobby

Mon 25/5

13:06-16:50

2 stops21h 44m

£1,254

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Tue 19/5

09:05-22:26

2 stops19h 21m

Houston Hobby

Sun 24/5

17:04-16:50

2 stops17h 46m

£1,326

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Fri 19/6

20:00-19:51

2 stops29h 51m

Houston Hobby

Fri 26/6

12:50-16:50

2 stops22h 00m

£1,687

Flights are sorted by cheapest return flights first.

Deals found on 3/5

Showing 1-10 of 32 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 5 May 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 25m. KLM provides one of the quickest options available for as low as £1,132. 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

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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Heathrow to Hobby flights
Heathrow to George Bush Intcntl flights
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Gatwick to Austin flights
Stansted to Austin flights
London City to Austin flights
Manchester to Hobby flights
Manchester to George Bush Intcntl flights
Heathrow to San Antonio flights
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Birmingham to Dallas/Fort Worth flights
Edinburgh to George Bush Intcntl flights
Newcastle upon Tyne to Hobby flights
Manchester to Austin flights
Edinburgh to Dallas/Fort Worth flights
Newcastle upon Tyne to George Bush Intcntl flights
Birmingham to Love Field flights
Birmingham to Hobby flights
Gatwick to San Antonio flights
Manchester to San Antonio flights
Southend to Dallas/Fort Worth flights
Liverpool to Dallas/Fort Worth flights
Leeds to Dallas/Fort Worth flights
Birmingham to George Bush Intcntl flights
Southampton to Austin flights
Edinburgh to Austin flights
Edinburgh to Love Field flights
Heathrow to Midland flights
Southampton to Hobby flights
Bristol to Hobby flights
Birmingham to Austin flights
Bristol to Dallas/Fort Worth flights
Leeds to Hobby flights
Heathrow to El Paso flights
Gatwick to El Paso 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 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£169Average£799FlexibilityNo cancel feeOn-time60%
Search WestJet flights
IberiaCheapest£342Average£941FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£384Average£730FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£435Average£787FlexibilityNo cancel feeOn-time75%
Search KLM flights
IcelandairCheapest£483Average£792FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Austrian AirlinesCheapest£506Average£790FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
JetBlueCheapest£507Average£672FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£513Average£806FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£515Average£778FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£548Average£584FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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