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Cheap flights from Portsmouth to Reykjavik Keflavik Intl Airport from £129

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KEF
9 Jan — 16 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Keflavik Intl

Enter your travel dates to find the best prices.

Best flights from Portsmouth to Keflavik Intl
Discover carefully curated flight deals from Portsmouth to Keflavik Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 December 2025.

Fri 20/317:35SOU - KEF
1 stop25h 30mKLM
Sun 19/420:10KEF - SOU
1 stop11h 25mKLM
Deal found 9/12£225
Fri 23/108:10SOU - KEF
2 stops25h 55mMultiple Airlines
Fri 30/119:40KEF - SOU
2 stops19h 10mMultiple Airlines
Deal found 9/12£264
Fri 23/117:35SOU - KEF
1 stop25h 30mKLM
Fri 30/111:25KEF - SOU
1 stop21h 20mKLM
Deal found 9/12£227
Thu 29/120:35SOU - KEF
2 stops20h 40mBritish Airways
Sun 1/211:50KEF - SOU
2 stops20h 20mBritish Airways
Deal found 9/12£559
Fri 20/317:35SOU - KEF
1 stop25h 30mMultiple Airlines
Sun 19/407:40KEF - SOU
1 stop23h 55mMultiple Airlines
Deal found 9/12£351
Thu 15/120:35SOU - KEF
2 stops20h 40mBritish Airways
Mon 19/111:50KEF - SOU
2 stops20h 00mBritish Airways
Deal found 9/12£628
Thu 1/108:50SOU - KEF
1 stop6h 15mMultiple Airlines
Thu 1/100:45KEF - SOU
2 stops18h 35mMultiple Airlines
Deal found 8/12£645
Wed 8/415:15SOU - KEF
2 stops19h 25mBritish Airways
Fri 10/410:30KEF - SOU
2 stops22h 15mBritish Airways
Deal found 9/12£664
Fri 2/116:05SOU - KEF
2 stops18h 00mMultiple Airlines
Sat 3/118:00KEF - SOU
3 stops21h 35mMultiple Airlines
Deal found 8/12£672

Find 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 10 December 2025.

Round-trip from

£225

One-way from

£129

Popular in

July

Cheapest in

January

Average price

£156
KLM
  • KLM
  • 20/3-19/4
  • 2 total stops
  • 36h 55m total
  • Portsmouth to Reykjavik
Search Deals
17/2
  • 17/2
  • 1 total stop
  • 5h 40m total
  • Portsmouth to Reykjavik
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£39 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 December 2025
Search Deals

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 10 December 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

Fri 20/3

17:35-19:05

1 stop25h 30m

Reykjavik Keflavik Intl

Sun 19/4

20:10-08:35

1 stop11h 25m

£225

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Fri 23/1

17:35-19:05

1 stop25h 30m

Reykjavik Keflavik Intl

Fri 30/1

11:25-08:45

1 stop21h 20m

£227

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Fri 23/1

08:10-10:05

2 stops25h 55m

Reykjavik Keflavik Intl

Fri 30/1

19:40-14:50

2 stops19h 10m

£264

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Fri 20/3

17:35-19:05

1 stop25h 30m

Reykjavik Keflavik Intl

Sun 19/4

07:40-08:35

1 stop23h 55m

£351

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 29/1

20:35-17:15

2 stops20h 40m

Reykjavik Keflavik Intl

Sun 1/2

11:50-08:10

2 stops20h 20m

£559

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 15/1

20:35-17:15

2 stops20h 40m

Reykjavik Keflavik Intl

Mon 19/1

11:50-07:50

2 stops20h 00m

£628

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Thu 1/1

08:50-15:05

1 stop6h 15m

Reykjavik Keflavik Intl

Thu 1/1

00:45-19:20

2 stops18h 35m

£645

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Wed 8/4

15:15-09:40

2 stops19h 25m

Reykjavik Keflavik Intl

Fri 10/4

10:30-09:45

2 stops22h 15m

£664

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Fri 2/1

16:05-10:05

2 stops18h 00m

Reykjavik Keflavik Intl

Sat 3/1

18:00-15:35

3 stops21h 35m

£672

SouthamptonReykjavik

SOU - KEF

SOUKEF

Southampton Eastleigh

Tue 17/2

09:20-15:00

1 stop5h 40m

£129

Flights are sorted by cheapest return flights first.

Deals found on 9/12

Showing 1-10 of 13 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, March is the cheapest month in which you can book a flight from Portsmouth to Reykjavik Keflavik Intl Airport (average of £37). Flying from Portsmouth to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £185). 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 10 December 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 26% on flights from Portsmouth to Reykjavik Keflavik Intl Airport by exploring options for tickets in the morning.

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 6 December 2025.

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. Wednesday 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 10 December 2025.

The most flights from P0R to KEF are scheduled on a Monday (12 on average). You will have fewer flight options on Sunday, 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 25h 30m. KLM provides one of the quickest options available for as low as £225. 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: American Airlines (92%), Turkish Airlines (90%), Qantas Airways (89%).

  • 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 £877, our data shows the cheapest flight currently is £117. When looking at the most popular route, (Southampton Eastleigh - Reykjavik Keflavik Intl), you can expect to pay £225 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, March is the cheapest month in which you can book a flight from Portsmouth to Reykjavik Keflavik Intl Airport (average of £37). Flying from Portsmouth to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £185). 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 10 December 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£59Average£121FlexibilityNo cancel feeOn-time86%
Search easyJet flights
PLAYCheapest£93Average£234FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£115Average£234FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£117Average£231FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£136Average£260FlexibilityNo 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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