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Cheap flights from Portsmouth to Houston from £798

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — HOU
16 Jul — 23 Jul1
1 adult

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 11 July 2025.

Round-trip from

£798

Popular in

August

Cheapest in

January

Average price

£874
Delta
  • Delta
  • 4/11-10/11
  • 2 total stops
  • 45h 20m total
  • Portsmouth to Houston
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£67 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 July 2025
Search Deals

Find flight deals from Portsmouth to Houston

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 11 July 2025.

Tue 4/1118:05SOU - IAH
1 stop25h 25mDelta
Mon 10/1115:30IAH - SOU
1 stop19h 55mDelta
Deal found 10/7£798
Wed 24/909:20SOU - HOU
2 stops19h 04mDelta
Sun 28/915:40HOU - SOU
2 stops19h 20mDelta
Deal found 9/7£833
Wed 24/909:20SOU - IAH
2 stops16h 42mKLM
Sun 28/915:30IAH - SOU
1 stop19h 30mKLM
Deal found 10/7£873
Mon 25/817:35SOU - HOU
2 stops54h 04mVirgin Atlantic
Mon 1/918:34HOU - SOU
2 stops32h 11mVirgin Atlantic
Deal found 11/7£909

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 11 July 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

Tue 4/11

18:05-13:30

1 stop25h 25m

Houston George Bush Intcntl

Mon 10/11

15:30-17:25

1 stop19h 55m

£798

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Wed 24/9

09:20-22:24

2 stops19h 04m

Houston Hobby

Sun 28/9

15:40-17:00

2 stops19h 20m

£833

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Wed 24/9

09:20-20:02

2 stops16h 42m

Houston George Bush Intcntl

Sun 28/9

15:30-17:00

1 stop19h 30m

£873

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Mon 25/8

17:35-17:39

2 stops54h 04m

Houston Hobby

Mon 1/9

18:34-08:45

2 stops32h 11m

£909

SouthamptonHouston

SOU - IAH

SOUIAH

Southampton Eastleigh

Sun 21/9

09:20-13:15

1 stop33h 55m

£1,564

SouthamptonHouston

SOU - HOU

SOUHOU

Southampton Eastleigh

Sun 21/9

18:25-22:37

2 stops34h 12m

£1,567

Flights are sorted by cheapest return flights first.

Deals found on 10/7

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, January is the cheapest month in which you can book a flight from Portsmouth to Houston (average of £765). Flying from Portsmouth to Houston in July is currently the most expensive (average of £1,114). 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 11 July 2025.

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.

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated 11 July 2025.
See what other customers who have flown with Delta, KLM, andVirgin Atlantic from Portsmouth to Houston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • 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, January is the cheapest month in which you can book a flight from Portsmouth to Houston (average of £765). Flying from Portsmouth to Houston in July is currently the most expensive (average of £1,114). 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

Browse thousands of different options on Cheapflights for your next trip

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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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£378Average£467FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Virgin AtlanticCheapest£378Average£747FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£440Average£582FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£450Average£555FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Scandinavian AirlinesCheapest£475Average£637FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£485Average£758FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£494Average£613FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£501Average£796FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Austrian AirlinesCheapest£508Average£808FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
IberiaCheapest£518Average£775FlexibilityNo cancel feeOn-time77%
Search Iberia flights

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

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