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Cheap flights from Portsmouth to Austin from £911

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — AUS
12 Jun — 19 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Austin

Enter your travel dates to find the best prices.

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 13 May 2026.

Mon 1/609:05
SOU
-
AUS
1 stop13h 05m
KLM
Sun 14/607:35
AUS
-
SOU
2 stops19h 00m
KLM
Deal found 10/5£911
Sat 26/906:45
SOU
-
AUS
2 stops19h 50m
British Airways
Sat 3/1022:30
AUS
-
SOU
2 stops27h 55m
British Airways
Deal found 8/5£918
Wed 11/1115:15
SOU
-
AUS
2 stops31h 35m
British Airways
Sun 15/1118:55
AUS
-
SOU
2 stops31h 30m
British Airways
Deal found 12/5£932
Mon 11/509:20
SOU
-
AUS
2 stops20h 31m
Multiple Airlines
Mon 6/716:21
AUS
-
SOU
2 stops18h 29m
Multiple Airlines
Deal found 10/5£1,093

Find flight deals from Portsmouth to Austin

Keep the following information in mind while searching for Portsmouth to Austin flight deals. Data was last updated 13 May 2026.

Round-trip from

£911

Popular in

July

Cheapest in

February

Average price

£653
KLM
  • KLM
  • 1/6-14/6
  • 3 total stops
  • 32h 05m total
  • Portsmouth to Austin
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£44 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 13 May 2026.
Use the filters below to find and compare flights from Portsmouth to Austin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Mon 1/6

09:05-16:10

1 stop13h 05m

Austin Bergstrom

Sun 14/6

07:35-08:35

2 stops19h 00m

£911

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Sat 26/9

06:45-20:35

2 stops19h 50m

Austin Bergstrom

Sat 3/10

22:30-08:25

2 stops27h 55m

£918

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Tue 22/9

14:25-15:25

2 stops31h 00m

Austin Bergstrom

Sat 26/9

22:30-20:15

2 stops15h 45m

£1,286

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Mon 21/9

19:55-15:25

2 stops25h 30m

Austin Bergstrom

Sat 26/9

17:55-20:15

2 stops20h 20m

£1,287

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Sun 20/9

20:45-20:35

2 stops29h 50m

Austin Bergstrom

Sat 26/9

22:30-20:15

2 stops15h 45m

£1,287

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Mon 1/6

12:55-15:25

3 stops32h 30m

Austin Bergstrom

Sun 14/6

16:25-08:35

3 stops34h 10m

£1,770

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Mon 21/9

19:30-15:25

2 stops25h 55m

Austin Bergstrom

Fri 25/9

22:30-08:25

2 stops27h 55m

£1,837
Cheapest one-way

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Sun 31/5

14:35-15:25

2 stops54h 50m

£1,111
Fastest single journey

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Thu 4/6

06:50-20:35

2 stops19h 45m

£1,111

SouthamptonAustin

SOU - AUS

SOUAUS

Southampton Eastleigh

Mon 1/6

06:50-15:25

2 stops38h 35m

£1,111

Flights are sorted by cheapest return flights first.

Deals found on 11/5

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 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 13 May 2026.

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.

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 13 May 2026.

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

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. 9 airlines have flights to Austin Bergstrom from Portsmouth on a regular basis.

  • How long is the flight from Portsmouth to Austin?

    There are many flights that can get you from Portsmouth to Austin in 13h 05m. Fly via KLM or British Airways to get the fastest option. The distance from Portsmouth to Austin is about 4881 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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: American Airlines (60%), British Airways (60%), Aer Lingus( 53%).

  • What are the cheapest flights from Portsmouth to Austin?

    The cheapest flight price from Portsmouth to Austin is £556. On average you can expect to pay £1,052. The most popular route, (Southampton Eastleigh - Austin Bergstrom), can usually be booked for £911.

  • 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.

See more FAQs

Travelling to a place near Austin?

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

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Alternative routes for Portsmouth to Austin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Portsmouth to Austin

Discover the top 9 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 13 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£341Average£656FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air CanadaCheapest£447Average£595FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£455Average£624FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£463Average£615FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£476Average£656FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£502Average£673FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£521Average£732FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£526Average£714FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Aer LingusCheapest£621Average£824FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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!

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