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Cheap flights from Portsmouth to Interlaken from £103

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ZRH
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Interlaken

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Interlaken
Explore the most affordable flight options available from Portsmouth to Interlaken. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2026.

Mon 31/820:40
SOU
-
ZRH
1 stop11h 15m
Multiple Airlines
Mon 7/918:15
ZRH
-
SOU
1 stop19h 40m
Multiple Airlines
Deal found 17/7£136
Sun 13/912:35
SOU
-
ZRH
2 stops19h 25m
Multiple Airlines
Wed 16/918:15
ZRH
-
SOU
1 stop15h 20m
Multiple Airlines
Deal found 14/7£166
Mon 3/820:40
SOU
-
ZRH
1 stop11h 15m
easyJet
Wed 5/809:55
ZRH
-
SOU
1 stop23h 40m
easyJet
Deal found 17/7£191
Fri 30/1020:30
SOU
-
ZRH
1 stop11h 25m
Multiple Airlines
Wed 4/1111:00
ZRH
-
SOU
1 stop9h 30m
Multiple Airlines
Deal found 16/7£201
Mon 3/820:40
SOU
-
ZRH
1 stop11h 15m
Multiple Airlines
Wed 5/808:30
ZRH
-
SOU
2 stops25h 05m
Multiple Airlines
Deal found 17/7£214

Find flight deals from Portsmouth to Interlaken

Keep the following information in mind while searching for Portsmouth to Interlaken flight deals. Data was last updated 18 July 2026.

Round-trip from

£136

One-way from

£103

Popular in

September

Cheapest in

May

Average price

£250
31/8-7/9
  • 31/8-7/9
  • 2 total stops
  • 30h 55m total
  • Portsmouth to Interlaken
Search Deals
easyJet
  • easyJet
  • 3/8
  • 1 total stop
  • 11h 15m total
  • Portsmouth to Interlaken
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Interlaken 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 18 July 2026.
Use the filters below to find and compare flights from Portsmouth to Interlaken that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Mon 31/8

20:40-08:55

1 stop11h 15m

Zurich

Mon 7/9

10:10-12:55

2 stops27h 45m

£188
Fastest return journey

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Mon 3/8

20:40-08:55

1 stop11h 15m

Zurich

Wed 5/8

09:55-08:35

1 stop23h 40m

£191

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Mon 3/8

20:40-08:55

1 stop11h 15m

Zurich

Wed 5/8

08:30-08:35

2 stops25h 05m

£233

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Fri 30/10

20:30-08:55

2 stops35h 25m

Zurich

Wed 4/11

11:00-19:30

1 stop9h 30m

£236

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Sun 13/9

12:35-09:00

2 stops19h 25m

Zurich

Wed 16/9

08:30-08:35

3 stops25h 05m

£247
Cheapest one-way

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Sat 19/9

12:15-08:35

3 stops19h 20m

£121

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Sat 19/9

20:00-10:20

1 stop13h 20m

£142

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Tue 20/10

13:25-06:55

3 stops16h 30m

£173

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Thu 6/8

18:05-08:35

1 stop13h 30m

£174

SouthamptonZurich

SOU - ZRH

SOUZRH

Southampton Eastleigh

Sat 1/8

17:30-08:35

1 stop14h 05m

£196

Flights are sorted by cheapest return flights first.

Deals found on 17/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Portsmouth to Interlaken

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

What is the cheapest time of day to fly from P0R to IN9?

Find hourly flight availability from Portsmouth to Interlaken. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2026.

A simple way to save on the total cost of your ticket is to fly from Portsmouth to Interlaken in the morning. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight in the evening.

Weekly flight availability from Portsmouth to Interlaken

Explore weekly flight availability from Portsmouth to Interlaken. 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 18 July 2026.

The most flights from P0R to IN9 are scheduled on a Saturday (26 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Interlaken. Price data was last updated on 18 July 2026.

Travellers seeking maximum savings on their Portsmouth to Interlaken flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Interlaken

Get insights into the airlines that provide service to Interlaken. 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 Interlaken. Reviews last updated 18 July 2026.
Read through reviews of airlines operating flights from Portsmouth to Interlaken, such as KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,541 reviews
Check prices

Entertainment

7.2

Crew

8.4

Comfort

7.7

Boarding

7.8

Overall

7.8

Food

7.3

Reviews

1 / 20
10.0
Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
KLM
7.8
Good
1,541 reviews
KLM
7.8
Good
1,541 reviews
Check prices

Entertainment

7.2

Crew

8.4

Comfort

7.7

Boarding

7.8

Overall

7.8

Food

7.3

Reviews

1 / 20
10.0
Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Interlaken. 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 Interlaken?

    For as low as £191, easyJet can have you in Interlaken from Portsmouth in 11h 15m. The distance between Portsmouth and Interlaken is about 507 mi.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portsmouth to Interlaken on time: ANA (72%), Qatar Airways (71%), British Airways (71%).

  • What are the cheapest flights from Portsmouth to Interlaken?

    On average you can expect to pay £1,168 for a flight from Portsmouth to Interlaken. The cheapest flight overall is £72 while the most popular route, (Southampton Eastleigh - Zurich) is currently priced at £136.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Interlaken 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

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Portsmouth to Interlaken

Discover the top 8 airlines that operate flights from Portsmouth to Interlaken. 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 18 July 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£35Average£110FlexibilityNo cancel feeOn-time86%
Search easyJet flights
RyanairCheapest£38Average£75FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Jet2Cheapest£60Average£122FlexibilityNo cancel feeOn-timeN/A
Search Jet2 flights
British AirwaysCheapest£69Average£168FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air SerbiaCheapest£69Average£71FlexibilityNo cancel feeOn-timeN/A
Search Air Serbia flights
easyJetCheapest£71Average£130FlexibilityNo cancel feeOn-timeN/A
Search easyJet flights
SWISSCheapest£86Average£195FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£134Average£255FlexibilityNo cancel feeOn-time75%
Search KLM 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 Interlaken?

Cheapflights makes it easy to find Portsmouth to Interlaken flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Interlaken?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Interlaken for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from Portsmouth to Interlaken with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portsmouth to Interlaken become cheaper?

Yes! Start tracking prices for Portsmouth to Interlaken flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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