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Cheap flights from Lisbon to Reykjavik Keflavik Intl Airport from £61

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — KEF
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap 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 15 September 2025.

Round-trip from

£144

One-way from

£61

Popular in

July

Cheapest in

January

Average price

£299
easyJet
  • easyJet
  • 4/11-18/11
  • 2 total stops
  • 24h 10m total
  • Lisbon to Reykjavik
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easyJet
  • easyJet
  • 3/12
  • 1 total stop
  • 22h 15m total
  • Lisbon to Reykjavik
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Highest demand for flights based on searches. 27% potential increase in price (£66 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Lisbon to Keflavik Intl

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 15 September 2025.

Tue 4/1119:10LIS - KEF
1 stop15h 50measyJet
Tue 18/1111:05KEF - LIS
1 stop8h 20measyJet
Deal found 15/9£144
Thu 27/1121:20LIS - KEF
Nonstop4h 30mIcelandair
Thu 4/1216:00KEF - LIS
Nonstop4h 20mIcelandair
Deal found 14/9£146
Wed 12/1119:00LIS - KEF
1 stop22h 15measyJet
Sat 15/1118:35KEF - LIS
1 stop18h 55measyJet
Deal found 15/9£166
Fri 24/1021:20LIS - KEF
Nonstop4h 30mPLAY
Fri 31/1015:50KEF - LIS
Nonstop4h 25mPLAY
Deal found 15/9£169
Fri 28/1118:25LIS - KEF
1 stop15h 40measyJet
Mon 8/1211:55KEF - LIS
1 stop22h 30measyJet
Deal found 14/9£191
Fri 26/1221:15LIS - KEF
Nonstop4h 35mPLAY
Mon 29/1215:50KEF - LIS
Nonstop4h 25mPLAY
Deal found 14/9£209
Mon 22/1221:15LIS - KEF
Nonstop4h 35mPLAY
Fri 2/115:50KEF - LIS
Nonstop4h 25mPLAY
Deal found 15/9£215
Wed 31/1219:50LIS - KEF
1 stop21h 25measyJet
Mon 5/112:00KEF - LIS
1 stop25h 20measyJet
Deal found 14/9£219
Sat 1/1113:40LIS - KEF
1 stop20h 55measyJet
Sat 8/1121:05KEF - LIS
1 stop12h 40measyJet
Deal found 15/9£241
Sun 21/1210:20LIS - KEF
1 stop8h 20measyJet
Fri 2/119:40KEF - LIS
1 stop14h 45measyJet
Deal found 15/9£247
Sat 1/1107:05LIS - KEF
2 stops12h 30mMultiple Airlines
Sat 8/1121:05KEF - LIS
1 stop12h 40mMultiple Airlines
Deal found 15/9£250
Thu 25/1211:25LIS - KEF
1 stop7h 40mKLM
Wed 31/1220:05KEF - LIS
1 stop14h 30mKLM
Deal found 15/9£283

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 15 September 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

Tue 4/11

19:10-11:00

1 stop15h 50m

Reykjavik Keflavik Intl

Tue 18/11

11:05-19:25

1 stop8h 20m

£144

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Thu 27/11

21:20-01:50

Nonstop4h 30m

Reykjavik Keflavik Intl

Sun 30/11

16:00-20:20

Nonstop4h 20m

£146

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Wed 12/11

19:00-17:15

1 stop22h 15m

Reykjavik Keflavik Intl

Sat 15/11

18:35-13:30

1 stop18h 55m

£166

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Fri 24/10

21:20-00:50

Nonstop4h 30m

Reykjavik Keflavik Intl

Fri 31/10

15:50-20:15

Nonstop4h 25m

£169

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Fri 28/11

18:25-10:05

1 stop15h 40m

Reykjavik Keflavik Intl

Mon 8/12

11:55-10:25

1 stop22h 30m

£191

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Fri 26/12

21:15-01:50

Nonstop4h 35m

Reykjavik Keflavik Intl

Mon 29/12

15:50-20:15

Nonstop4h 25m

£209

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Mon 22/12

21:15-01:50

Nonstop4h 35m

Reykjavik Keflavik Intl

Fri 2/1

15:50-20:15

Nonstop4h 25m

£215

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Sat 1/11

13:40-10:35

1 stop20h 55m

Reykjavik Keflavik Intl

Sat 8/11

21:05-09:45

1 stop12h 40m

£241

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Sat 7/3

18:55-15:25

1 stop20h 30m

Reykjavik Keflavik Intl

Thu 19/3

15:40-16:05

1 stop24h 25m

£246

LisbonReykjavik

LIS - KEF

LISKEF

Lisbon Humberto Delgado

Sun 21/12

10:20-18:40

1 stop8h 20m

Reykjavik Keflavik Intl

Fri 2/1

19:40-10:25

1 stop14h 45m

£247

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 20 results
1
2

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 12 September 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, January is the cheapest month in which you can book a flight from Lisbon to Reykjavik Keflavik Intl Airport (average of £75). Flying from Lisbon 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 LIS to KEF?

Find hourly flight availability from Lisbon 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 15 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Lisbon to Reykjavik Keflavik Intl Airport as you normally would.

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 £146, Icelandair can have you in Reykjavik Keflavik Intl Airport from Lisbon in 4h 30m. Lisbon and Reykjavik Keflavik Intl Airport are separated by a distance of 1826 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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, January is the cheapest month in which you can book a flight from Lisbon to Reykjavik Keflavik Intl Airport (average of £75). Flying from Lisbon 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

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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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