Find flights
When to book
Airlines
FAQs

Cheap flights from Portsmouth to Austin from £764

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — AUS
9 Jul — 16 Jul1
1 adult

Cheap flight deals from Portsmouth to Austin

Keep the following information in mind while searching for Portsmouth to Austin flight deals. Data was last updated 4 July 2025.

Round-trip from

£764

Popular in

August

Cheapest in

February

Average price

£731
Aer Lingus
  • Aer Lingus
  • 17/8-24/8
  • 4 total stops
  • 67h 48m total
  • Portsmouth to Austin
Highest demand for flights based on searches. 13% potential increase in price (£67 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Portsmouth to Austin

Cheapest flights from Portsmouth to Austin
Explore the most affordable flight options available from Portsmouth to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Sun 17/820:00SOU - AUS
2 stops33h 58mAer Lingus
Sun 24/816:50AUS - SOU
2 stops33h 50mAer Lingus
Deal found 3/7£764
Sun 17/817:35SOU - AUS
2 stops28h 20mKLM
Sun 24/819:08AUS - SOU
2 stops15h 52mKLM
Deal found 3/7£784
Sun 17/809:10SOU - AUS
3 stops21h 49mMultiple Airlines
Sun 24/811:44AUS - SOU
3 stops23h 01mMultiple Airlines
Deal found 3/7£961

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to Austin 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 4 July 2025.
Use the filters below to find and compare flights from Portsmouth to Austin that are best for you.

Fly from

Portsmouth

Fly to

Austin

Route

Depart

Return

Price

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Sun 17/8

20:00-23:58

2 stops33h 58m

Austin Bergstrom

Sun 24/8

16:50-08:40

2 stops33h 50m

£764

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Sun 17/8

17:35-15:55

2 stops28h 20m

Austin Bergstrom

Sun 24/8

19:08-17:00

2 stops15h 52m

£784

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Sun 17/8

09:10-00:59

3 stops21h 49m

Austin Bergstrom

Sun 24/8

11:44-16:45

3 stops23h 01m

£961

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Best time to book a flight from Portsmouth to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin 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 Austin

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

Currently, February is the cheapest month in which you can book a flight from Portsmouth to Austin (average of £636). Flying from Portsmouth to Austin in July is currently the most expensive (average of £901). 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 AUS?

Find hourly flight availability from Portsmouth to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

When flying from Portsmouth to Austin, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

Travellers seeking maximum savings on their Portsmouth to Austin flight should consider departing on Thursday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to Austin

Explore weekly flight availability from Portsmouth to Austin. 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 4 July 2025.

The most flights from P0R to AUS are scheduled on a Monday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. 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 Austin. Reviews last updated 4 July 2025.
Read through reviews of airlines operating flights from Portsmouth to Austin, such as KLM and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Comfort

7.7

Food

7.2

Overall

7.8

Crew

8.4

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Austin. 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 into for flights to Austin from Portsmouth?

    For a flight from Portsmouth to Austin, you will be flying into Austin Bergstrom. Austin Bergstrom (AUS) is just 7.5 mi from the center of the city. Austin Bergstrom is the only Austin airport and it handles 0 inbound flights from Portsmouth per day. 10 airlines have flights to Austin Bergstrom from Portsmouth on a regular basis.

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

    Before booking your flight to Austin from Portsmouth, check out the most reliable airlines to get you to your destination on time: Aer Lingus (66%), Finnair (66%), Iberia( 66%).

  • What are the cheapest flights from Portsmouth to Austin?

    The cheapest flight price from Portsmouth to Austin is £338. On average you can expect to pay £823. The most popular route, (Southampton Eastleigh - Austin Bergstrom), can usually be booked for £654.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Portsmouth to Austin (average of £636). Flying from Portsmouth to Austin in July is currently the most expensive (average of £901). 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

Travelling to a place near Portsmouth?

Book flights to Portsmouth if you plan to visit one of these locations
Round Rock

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to Austin

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Austin

Discover the top 10 airlines that operate flights from Portsmouth to Austin. 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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£339Average£526FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Virgin AtlanticCheapest£398Average£561FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£411Average£590FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£428Average£566FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£429Average£602FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest£440Average£652FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£444Average£518FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£453Average£629FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£462Average£577FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£484Average£646FlexibilityNo cancel feeOn-time77%
Search Iberia 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 Austin?

Deals for Portsmouth to Austin 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 Austin?

Cheapflights helps you find that perfect flight to Austin from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portsmouth to Austin with no change fees?

Need flexible booking options for your flight to Austin from Portsmouth? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to Austin 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.