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Cheap flights from Portsmouth to Houston from £1,200

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HOU
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Houston

Keep the following information in mind while searching for Portsmouth to Houston flight deals. Data was last updated 7 November 2025.

Round-trip from

£1,200

Popular in

July

Cheapest in

March

Average price

£761
Virgin Atlantic
  • Virgin Atlantic
  • 26/3-30/3
  • 3 total stops
  • 70h 05m total
  • Portsmouth to Houston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Portsmouth to Houston

Enter your travel dates to find the best prices.

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 7 November 2025.

Thu 26/308:50SOU - IAH
1 stop34h 40mVirgin Atlantic
Mon 30/315:25IAH - SOU
2 stops35h 25mVirgin Atlantic
Deal found 5/11£1,200
Thu 26/308:50SOU - IAH
1 stop34h 40mDelta
Mon 30/315:30IAH - SOU
1 stop19h 30mDelta
Deal found 5/11£1,201
Thu 26/312:40SOU - IAH
2 stops31h 25mBritish Airways
Mon 30/315:30IAH - SOU
2 stops17h 15mBritish Airways
Deal found 4/11£1,362

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 7 November 2025.
Use the filters below to find and compare flights from Portsmouth to Houston that are best for you.

Fly from

Portsmouth

Fly to

Houston

Route

Depart

Return

Price

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 26/3

08:50-14:30

1 stop34h 40m

Houston George Bush Intcntl

Mon 30/3

15:25-08:50

2 stops35h 25m

£1,200

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 26/3

08:50-14:30

1 stop34h 40m

Houston George Bush Intcntl

Mon 30/3

15:30-17:00

1 stop19h 30m

£1,201

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 26/3

12:40-15:05

2 stops31h 25m

Houston George Bush Intcntl

Mon 30/3

15:30-14:45

2 stops17h 15m

£1,362

Flights are sorted by cheapest return flights first.

Deals found on 5/11

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 month to book a flight from Portsmouth to Houston?

Currently, May is the cheapest month in which you can book a flight from Portsmouth to Houston (average of £134). Flying from Portsmouth to Houston in July is currently the most expensive (average of £650). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 7 November 2025.

One of the essential ways to save on airfare from Portsmouth to Houston is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 24% on airfare.

What is the cheapest day to fly from Portsmouth to Houston?

Use this chart to determine the cheapest time to fly return from Portsmouth to Houston. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Houston flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 34h 40m. Virgin Atlantic provides one of the quickest options available for as low as £1,200. Airlines will cover a distance of 4799 mi.

  • 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.

  • What is the cheapest month to book a flight from Portsmouth to Houston?

    Currently, May is the cheapest month in which you can book a flight from Portsmouth to Houston (average of £134). Flying from Portsmouth to Houston in July is currently the most expensive (average of £650). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Portsmouth to Houston

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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 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£325Average£726FlexibilityNo cancel feeOn-time75%
Search KLM flights
WestJetCheapest£392Average£573FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Virgin AtlanticCheapest£392Average£766FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£457Average£676FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£479Average£588FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Scandinavian AirlinesCheapest£493Average£666FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£511Average£768FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£518Average£786FlexibilityNo cancel feeOn-time77%
Search Iberia flights
FinnairCheapest£519Average£674FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Austrian AirlinesCheapest£527Average£821FlexibilityNo 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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