Find flights
When to book
FAQs

Cheap flights from Portsmouth to Reykjavik Keflavik Intl Airport from £224

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 18 September 2025.

Round-trip from

£224

Popular in

July

Cheapest in

January

Average price

£141
KLM
  • KLM
  • 5/3-12/3
  • 2 total stops
  • 37h 00m total
  • Portsmouth to Reykjavik
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£35 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Portsmouth to Keflavik Intl

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 18 September 2025.

Thu 6/1118:05SOU - KEF
1 stop16h 20mKLM
Thu 13/1120:00KEF - SOU
1 stop12h 05mKLM
Deal found 17/9£224
Wed 5/1114:25SOU - KEF
3 stops20h 20mBritish Airways
Mon 10/1111:50KEF - SOU
2 stops20h 20mBritish Airways
Deal found 18/9£451
Thu 4/1219:55SOU - KEF
2 stops21h 20mBritish Airways
Thu 11/1211:45KEF - SOU
2 stops20h 25mBritish Airways
Deal found 17/9£522
Thu 6/1114:45SOU - KEF
3 stops20h 10mBritish Airways
Thu 13/1111:45KEF - SOU
2 stops20h 25mBritish Airways
Deal found 17/9£550

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 18 September 2025.
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

Thu 5/3

18:05-10:25

1 stop16h 20m

Reykjavik Keflavik Intl

Thu 12/3

11:25-08:05

1 stop20h 40m

£224

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 6/11

18:05-10:25

1 stop16h 20m

Reykjavik Keflavik Intl

Thu 13/11

20:00-08:05

1 stop12h 05m

£224

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Tue 10/3

08:40-18:00

1 stop9h 20m

Reykjavik Keflavik Intl

Wed 11/3

20:05-08:20

1 stop12h 15m

£333

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Wed 5/11

14:25-10:45

3 stops20h 20m

Reykjavik Keflavik Intl

Mon 10/11

11:50-08:10

2 stops20h 20m

£451

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 4/12

19:55-17:15

2 stops21h 20m

Reykjavik Keflavik Intl

Thu 11/12

11:45-08:10

2 stops20h 25m

£522

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 6/11

14:45-10:55

3 stops20h 10m

Reykjavik Keflavik Intl

Thu 13/11

11:45-08:10

2 stops20h 25m

£550

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 5/2

20:30-17:15

2 stops20h 45m

Reykjavik Keflavik Intl

Thu 12/2

11:45-08:10

2 stops20h 25m

£579

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Tue 30/9

16:50-10:00

2 stops18h 10m

£1,037

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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 £75). Flying from Portsmouth to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). 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 18 September 2025.

When flying from Portsmouth to Reykjavik Keflavik Intl Airport, 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 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 18 September 2025.

The most flights from P0R to KEF are scheduled on a Monday (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 16h 20m. KLM provides one of the quickest options available for as low as £224. 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: Emirates (86%), American Airlines (85%), Qatar Airways (85%).

  • 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 £787, our data shows the cheapest flight currently is £104. When looking at the most popular route, (Southampton Eastleigh - Reykjavik Keflavik Intl), you can expect to pay £224 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 £75). Flying from Portsmouth to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £289). 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

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

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 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£48Average£109FlexibilityNo cancel feeOn-time86%
Search easyJet flights
PLAYCheapest£76Average£142FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£112Average£228FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£115Average£211FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£133Average£269FlexibilityNo 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.

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.