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Cheap flights from Lisbon to Reykjavik Keflavik Intl Airport from £80

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — KEF
7 Jan — 14 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Lisbon to Keflavik Intl

Enter your travel dates to find the best prices.

Cheapest flights from Lisbon to Keflavik Intl
Explore the most affordable flight options available from Lisbon to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 December 2025.

Thu 25/1215:30LIS - KEF
1 stop18h 55mKLM
Wed 31/1220:05KEF - LIS
1 stop14h 30mKLM
Deal found 6/12£565
Mon 22/1221:20LIS - KEF
2 stops13h 40mScandinavian Airlines
Fri 2/119:30KEF - LIS
2 stops44h 35mScandinavian Airlines
Deal found 6/12£711
Fri 26/1217:20LIS - KEF
1 stop17h 20mScandinavian Airlines
Sun 28/1219:30KEF - LIS
2 stops25h 00mScandinavian Airlines
Deal found 8/12£737
Wed 17/1216:55LIS - KEF
2 stops19h 35mScandinavian Airlines
Thu 15/111:30KEF - LIS
1 stop28h 20mScandinavian Airlines
Deal found 7/12£818
Wed 17/1219:50LIS - KEF
1 stop28h 05mTAP AIR PORTUGAL
Thu 15/116:00KEF - LIS
Nonstop4h 20mTAP AIR PORTUGAL
Deal found 7/12£990

Find flight deals from Lisbon to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 December 2025.

Round-trip from

£156

One-way from

£80

Popular in

July

Cheapest in

January

Average price

£286
easyJet
  • easyJet
  • 28/2-3/3
  • 2 total stops
  • 38h 00m total
  • Lisbon to Reykjavik
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easyJet
  • easyJet
  • 19/5
  • 1 total stop
  • 14h 25m total
  • Lisbon to Reykjavik
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£72 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Lisbon 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 8 December 2025.
Use the filters below to find and compare flights from Lisbon to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Lisbon

Fly to

Keflavik Intl

Route

Depart

Return

Price

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Sat 28/2

19:50-10:30

1 stop14h 40m

Reykjavik Keflavik Intl

Tue 3/3

11:05-10:25

1 stop23h 20m

£156

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Mon 2/3

20:15-10:15

1 stop14h 00m

Reykjavik Keflavik Intl

Sun 8/3

11:20-23:35

1 stop12h 15m

£166

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Fri 16/1

18:25-10:05

1 stop15h 40m

Reykjavik Keflavik Intl

Sun 18/1

11:20-23:35

1 stop12h 15m

£220

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Fri 27/3

18:25-10:05

1 stop15h 40m

Reykjavik Keflavik Intl

Sat 4/4

00:15-12:55

1 stop11h 40m

£256

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Wed 13/5

13:40-08:00

1 stop19h 20m

Reykjavik Keflavik Intl

Wed 20/5

09:00-21:00

1 stop11h 00m

£257

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Wed 4/2

05:00-19:05

1 stop14h 05m

Reykjavik Keflavik Intl

Mon 9/2

20:05-10:35

1 stop14h 30m

£290

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Mon 12/1

05:00-19:05

1 stop14h 05m

Reykjavik Keflavik Intl

Mon 19/1

20:05-14:35

1 stop18h 30m

£300

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Thu 7/5

14:30-00:10

1 stop10h 40m

Reykjavik Keflavik Intl

Sat 9/5

14:20-23:30

1 stop8h 10m

£316

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Thu 15/1

10:40-10:55

1 stop24h 15m

Reykjavik Keflavik Intl

Thu 22/1

11:45-21:50

1 stop10h 05m

£319

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Wed 1/4

16:55-10:15

2 stops18h 20m

Reykjavik Keflavik Intl

Mon 6/4

18:25-15:35

2 stops20h 10m

£324

Flights are sorted by cheapest return flights first.

Deals found on 8/12

Showing 1-10 of 18 results
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Best time to book a flight from Lisbon to Keflavik Intl

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

How far ahead should I book a flight from Lisbon to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a return flight from Lisbon to Keflavik Intl. Price data was last updated on 5 December 2025.

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Lisbon to Reykjavik Keflavik Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Lisbon to Reykjavik Keflavik Intl Airport (average of £100). Flying from Lisbon to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £266). 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.

How much does it cost for a return flight from Lisbon to Reykjavik Keflavik Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Lisbon to Keflavik Intl. 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 from for flights from Lisbon to Reykjavik Keflavik Intl?

    Lisbon Humberto Delgado (LIS), located 4.2 mi from the city center, is the airport you fly out of when you book flights from Lisbon to Reykjavik Keflavik Intl. 0 airlines have flights from Humberto Delgado to Reykjavik Keflavik Intl on a regular basis. Booking flights from Lisbon Humberto Delgado to Reykjavik Keflavik Intl should not be difficult; the airport handles an average of 0 outbound flights to Reykjavik Keflavik Intl per day.

  • How long is the flight from Lisbon to Reykjavik Keflavik Intl Airport?

    For as low as £156, easyJet can have you in Reykjavik Keflavik Intl Airport from Lisbon in 14h 40m. Lisbon and Reykjavik Keflavik Intl Airport are separated by a distance of 1826 mi.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Lisbon to Reykjavik Keflavik Intl Airport (average of £100). Flying from Lisbon to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of £266). 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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Keflavik Intl from Lisbon today and book when prices fit your budget.

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