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Cheap flights from Portsmouth to Houston George Bush Intcntl Airport from £946

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IAH
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Find flight deals from Portsmouth to George Bush Intcntl

Enter your travel dates to find the best prices.

Best flights from Portsmouth to George Bush Intcntl
Discover carefully curated flight deals from Portsmouth to George Bush Intcntl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 October 2025.

Thu 12/318:05SOU - IAH
1 stop25h 25mDelta
Mon 16/307:15IAH - SOU
2 stops28h 45mDelta
Deal found 14/10£946
Thu 12/308:50SOU - IAH
2 stops18h 29mVirgin Atlantic
Mon 16/311:30IAH - SOU
2 stops15h 35mVirgin Atlantic
Deal found 14/10£950
Fri 27/317:30SOU - IAH
1 stop26h 00mVirgin Atlantic
Tue 31/315:30IAH - SOU
1 stop19h 30mVirgin Atlantic
Deal found 14/10£1,194

Cheap flight deals from Portsmouth to George Bush Intcntl

Keep the following information in mind while searching for Portsmouth to George Bush Intcntl flight deals. Data was last updated 17 October 2025.

Round-trip from

£946

Popular in

July

Cheapest in

March

Average price

£748
Delta
  • Delta
  • 12/3-16/3
  • 2 total stops
  • 54h 10m total
  • Portsmouth to Houston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£78 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 October 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to George Bush Intcntl 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 17 October 2025.
Use the filters below to find and compare flights from Portsmouth to Houston George Bush Intcntl Airport that are best for you.

Fly from

Portsmouth

Fly to

George Bush Intcntl

Route

Depart

Return

Price

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 12/3

18:05-14:30

1 stop25h 25m

Houston George Bush Intcntl

Mon 16/3

07:15-17:00

2 stops28h 45m

£946

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Thu 12/3

08:50-22:19

2 stops18h 29m

Houston George Bush Intcntl

Mon 16/3

11:30-08:05

2 stops15h 35m

£950

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Fri 27/3

17:30-14:30

1 stop26h 00m

Houston George Bush Intcntl

Tue 31/3

15:30-17:00

1 stop19h 30m

£1,194

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Sun 30/11

20:10-16:55

3 stops50h 45m

£1,478

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Best time to book a flight from Portsmouth to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl 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 George Bush Intcntl Airport

What is the cheapest month to book a flight from Portsmouth to Houston George Bush Intcntl Airport?

Currently, September is the cheapest month in which you can book a flight from Portsmouth to Houston George Bush Intcntl Airport (average of £498). Flying from Portsmouth to Houston George Bush Intcntl Airport in July is currently the most expensive (average of £683). 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 IAH?

Find hourly flight availability from Portsmouth to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

It’s optimal to fly from Portsmouth to Houston George Bush Intcntl Airport in the evening. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight at midday.

What is the cheapest day to fly from Portsmouth to Houston George Bush Intcntl Airport?

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

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

Weekly flight availability from Portsmouth to Houston George Bush Intcntl Airport

Explore weekly flight availability from Portsmouth to George Bush Intcntl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 October 2025.

The most flights from P0R to IAH are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to George Bush Intcntl. 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 George Bush Intcntl Airport?

    A quick flight from Portsmouth to Houston George Bush Intcntl Airport can take about 18h 29m. Delta provides one of the quickest options available for as low as £950. Airlines will cover a distance of 4799 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Portsmouth to Houston George Bush Intcntl Airport?

    No one likes to see their flight delayed. When booking a flight from Portsmouth to Houston George Bush Intcntl Airport consider choosing Air Canada (88%), Austrian Airlines (88%) or Brussels Airlines (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portsmouth to Houston George Bush Intcntl Airport?

    Looking at all options, your cheapest flight can be booked for £407. While the most popular route (Southampton Eastleigh - Houston George Bush Intcntl) can be booked for £955 on average, our data indicates £804 when flying from Portsmouth to Houston George Bush Intcntl Airport.

  • Can I find deals for flights from Portsmouth to George Bush Intcntl that include hotel bookings?

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

  • How can I find direct flights from Portsmouth to George Bush Intcntl?

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

  • Can I find deals for business class flights from Portsmouth to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Portsmouth to George Bush Intcntl 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 George Bush Intcntl Airport?

    Currently, September is the cheapest month in which you can book a flight from Portsmouth to Houston George Bush Intcntl Airport (average of £498). Flying from Portsmouth to Houston George Bush Intcntl Airport in July is currently the most expensive (average of £683). 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.

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Top 10 airlines flying from Portsmouth to George Bush Intcntl

Discover the top 10 airlines that operate flights from Portsmouth to George Bush Intcntl. 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£467Average£581FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IcelandairCheapest£487Average£747FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£500Average£752FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£508Average£638FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£533Average£778FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£537Average£729FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£552Average£587FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Austrian AirlinesCheapest£594Average£804FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£601Average£795FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Brussels AirlinesCheapest£602Average£791FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights

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How does Cheapflights help users find flights from Portsmouth to George Bush Intcntl?

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Why should you use Cheapflights to find cheap flight tickets from Portsmouth to George Bush Intcntl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to George Bush Intcntl from Portsmouth.

Can Cheapflights find flights from Portsmouth to George Bush Intcntl with no change fees?

Certainly. Search results for flights to George Bush Intcntl from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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