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Portsmouth

$6,025+ Cheap flights from Austin (AUS) to Portsmouth, England

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — LHR
Jan 18 — Jan 251
Sun 1/18
Sun 1/25
1 adult, Economy
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Cheap flight deals from Austin to Portsmouth

Best flights from Austin to Portsmouth
Discover carefully curated flight deals from Austin to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 19, 2025.

This British Airways deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/217:00 pmAUS - SOU
2 stops19h 05mBritish Airways
Sun 1/2512:15 pmSOU - AUS
2 stops34h 35mBritish Airways
Deal found 12/16$6,025
This British Airways deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/57:57 amAUS - SOU
2 stops27h 33mBritish Airways
Mon 1/128:30 pmSOU - AUS
2 stops26h 20mBritish Airways
Deal found 12/17$6,027

Find flight deals from Austin to Portsmouth

Keep the following information in mind while searching for Austin to Portsmouth flight deals. Data was last updated December 19, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$6,025
(British Airways)

Popular in

June

Cheapest in

September

Average price

$948
Provider with most accurate pricing for Austin Bergstrom-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-London (LON) flights.
Search Deals
From Austin Bergstrom to Portsmouth
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Portsmouth 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 2,558,603 searches. Data last updated December 19, 2025.
Use the filters below to find and compare flights from Austin to Portsmouth that are best for you.

Fly from

Austin

Fly to

Portsmouth

Route

Depart

Return

Price

AustinSouthampton

AUS - SOU

AUSSOU

Austin Bergstrom

Wed 1/21

7:00 pm-8:05 pm

2 stops19h 05m

Southampton Eastleigh

Sun 1/25

12:15 pm-4:50 pm

2 stops34h 35m

$6,025

AustinSouthampton

AUS - SOU

AUSSOU

Austin Bergstrom

Mon 1/5

7:57 am-5:30 pm

2 stops27h 33m

Southampton Eastleigh

Mon 1/12

8:30 pm-4:50 pm

2 stops26h 20m

$6,027

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Best time to book a flight from Austin to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Austin with our price prediction graph.
Estimated round-trip 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 Austin to Portsmouth

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

Currently, August is the cheapest month in which you can book a flight from Austin to Portsmouth (average of $131). Flying from Austin to Portsmouth in June is currently the most expensive (average of $835). 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 AUS to P0R?

Find hourly flight availability from Austin to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 19, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 9% on flights from Austin to Portsmouth by exploring options for tickets in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Austin to Portsmouth. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Austin to Portsmouth

Explore weekly flight availability from Austin to Portsmouth. 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 December 19, 2025.

The most flights from AUS to P0R are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

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

  • What airport do you fly from for flights from Austin to Portsmouth?

    Most people fly from Austin Bergstrom (AUS) if they book a flight from Austin to Portsmouth. On average, Austin Bergstrom has 0 outbound flights to Portsmouth per day from 7 airlines. Austin Bergstrom is conveniently located just 7.5 mi from Austin’s city center.

  • How long is the flight from Austin to Portsmouth?

    For as low as $6,025, British Airways can have you in Portsmouth from Austin in 19h 05m. Airlines will cover a distance of 4881 mi.

  • What are the most reliable airlines from Austin to Portsmouth?

    Consider American Airlines (67%), British Airways (67%) or Aer Lingus (57%) when booking your flight. These represent the most reliable airlines when flying from Austin to Portsmouth.

  • What are the cheapest flights from Austin to Portsmouth?

    On average you can expect to pay $1,428 for a flight from Austin to Portsmouth. The cheapest flight overall is $245 while the most popular route, (Austin Bergstrom - Southampton Eastleigh) is currently priced at $846.

  • Can I find deals for flights from Austin to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Austin to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Portsmouth?

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

  • Can I find deals for business class flights from Austin to Portsmouth?

    Yes. Cheapflights offers flight deals from Austin to Portsmouth 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 Austin to Portsmouth?

    Currently, August is the cheapest month in which you can book a flight from Austin to Portsmouth (average of $131). Flying from Austin to Portsmouth in June is currently the most expensive (average of $835). 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 7 airlines flying from Austin to Portsmouth

Discover the top 7 airlines that operate flights from Austin to Portsmouth. 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 2,558,603 searches. Data last updated December 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$538Average$881FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$545Average$772FlexibilityNo cancel feeOn-time71%
FinnairCheapest$567Average$755FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$568Average$1,006FlexibilityNo cancel feeOn-time69%
IberiaCheapest$577Average$807FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$621Average$724FlexibilityNo cancel feeOn-time72%
DeltaCheapest$623Average$834FlexibilityNo cancel feeOn-timeN/A

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