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Cheap flights from Portsmouth to Reykjavik Keflavik Intl Airport from £256

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Keflavik Intl

Keep the following information in mind while searching for Portsmouth to Keflavik Intl flight deals. Data was last updated 9 January 2026.

Round-trip from

£256

Popular in

July

Cheapest in

November

Average price

£115
4/2-11/2
  • 4/2-11/2
  • 3 total stops
  • 26h 40m total
  • Portsmouth to Reykjavik
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Portsmouth to Keflavik Intl

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Keflavik Intl
Explore the most affordable flight options available from Portsmouth to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 January 2026.

Wed 4/212:00SOU - KEF
1 stop6h 25mMultiple Airlines
Wed 11/219:20KEF - SOU
2 stops20h 15mMultiple Airlines
Deal found 7/1£256
Mon 16/220:10SOU - KEF
2 stops20h 15mMultiple Airlines
Fri 27/220:20KEF - SOU
2 stops18h 30mMultiple Airlines
Deal found 7/1£283
Sun 15/212:15SOU - KEF
2 stops22h 30mMultiple Airlines
Sun 22/213:50KEF - SOU
2 stops24h 10mMultiple Airlines
Deal found 7/1£375
Sun 22/212:15SOU - KEF
2 stops46h 40mBritish Airways
Fri 6/318:10KEF - SOU
2 stops47h 35mBritish Airways
Deal found 7/1£396
Mon 23/212:00SOU - KEF
2 stops22h 55mBritish Airways
Wed 4/311:50KEF - SOU
2 stops29h 40mBritish Airways
Deal found 7/1£412

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Keflavik Intl 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 9 January 2026.
Use the filters below to find and compare flights from Portsmouth to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Portsmouth

Fly to

Keflavik Intl

Route

Depart

Return

Price

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Wed 4/2

12:00-18:25

1 stop6h 25m

Reykjavik Keflavik Intl

Wed 11/2

20:05-08:25

1 stop12h 20m

£261

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Mon 16/2

20:10-16:25

2 stops20h 15m

Reykjavik Keflavik Intl

Fri 27/2

20:20-14:50

2 stops18h 30m

£283

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Tue 24/2

15:00-10:50

2 stops19h 50m

Reykjavik Keflavik Intl

Thu 5/3

11:45-17:30

2 stops29h 45m

£396

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Sun 22/2

12:15-10:55

2 stops46h 40m

Reykjavik Keflavik Intl

Wed 4/3

11:50-17:30

2 stops29h 40m

£396

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Sun 22/2

12:15-10:55

2 stops46h 40m

Reykjavik Keflavik Intl

Thu 5/3

11:45-17:30

2 stops29h 45m

£396

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Sun 22/2

12:15-10:55

2 stops46h 40m

Reykjavik Keflavik Intl

Fri 6/3

18:10-17:45

2 stops47h 35m

£396

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Tue 24/2

15:00-10:50

2 stops19h 50m

Reykjavik Keflavik Intl

Wed 4/3

11:50-17:30

2 stops29h 40m

£396

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Mon 23/2

12:00-10:50

2 stops46h 50m

Reykjavik Keflavik Intl

Thu 5/3

11:45-17:30

2 stops29h 45m

£412

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Mon 23/2

12:00-10:55

2 stops22h 55m

Reykjavik Keflavik Intl

Wed 4/3

11:50-17:30

2 stops29h 40m

£412

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Sun 15/2

17:45-23:20

2 stops29h 35m

Reykjavik Keflavik Intl

Sun 22/2

20:05-08:20

1 stop12h 15m

£418

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 11 results
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Best time to book a flight from Portsmouth to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl 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 Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from Portsmouth to Reykjavik Keflavik Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Reykjavik Keflavik Intl Airport (average of £51). Flying from Portsmouth to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £183). 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 KEF?

Find hourly flight availability from Portsmouth to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 January 2026.

Unlike at midday, when flights are generally more expensive, you can save up to 32% on flights from Portsmouth to Reykjavik Keflavik Intl Airport by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Portsmouth to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly return from Portsmouth to Keflavik Intl. Price data was last updated on 3 January 2026.

Travellers seeking maximum savings on their Portsmouth to Reykjavik Keflavik Intl Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Portsmouth to Keflavik Intl. 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 9 January 2026.

The most flights from P0R to KEF are scheduled on a Wednesday (12 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 on average).

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Keflavik Intl. 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 Reykjavik Keflavik Intl Airport?

    A quick flight from Portsmouth to Reykjavik Keflavik Intl Airport can take about 19h 50m. British Airways provides one of the quickest options available for as low as £396. The distance from Portsmouth to Reykjavik Keflavik Intl Airport is about 1185 mi.

  • What are the most reliable airlines from Portsmouth to Reykjavik Keflavik Intl Airport?

    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 Reykjavik Keflavik Intl Airport on time: Qatar Airways (92%), Turkish Airlines (90%), American Airlines (90%).

  • What are the cheapest flights from Portsmouth to Reykjavik Keflavik Intl Airport?

    While on average a flight from Portsmouth to Reykjavik Keflavik Intl Airport is generally £910, our data shows the cheapest flight currently is £81. When looking at the most popular route, (Southampton Eastleigh - Reykjavik Keflavik Intl), you can expect to pay £256 for that flight.

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

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

  • How can I find direct flights from Portsmouth to Keflavik Intl?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Keflavik Intl 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 Reykjavik Keflavik Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Reykjavik Keflavik Intl Airport (average of £51). Flying from Portsmouth to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £183). 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 Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Hveragerdi
Keflavik

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Portsmouth to Keflavik Intl

Discover the top 5 airlines that operate flights from Portsmouth to Keflavik Intl. 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£49Average£112FlexibilityNo cancel feeOn-time86%
Search easyJet flights
PLAYCheapest£98Average£235FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£114Average£236FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£119Average£226FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£135Average£257FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines 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 Keflavik Intl?

Cheapflights makes it easy to find Portsmouth to Keflavik Intl 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 Keflavik Intl?

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

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

Yes! Cheapflights helps users easily find flights from Portsmouth to Keflavik Intl with no change fees.

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

Yes, Cheapflights offers price alerts on Portsmouth to Keflavik Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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