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$128+ Cheap flights from Keflavik Intl (KEF) to Lisbon (LIS)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LIS
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Keflavik Intl to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Lisbon (LIS). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$254
(Kiwi.com)

One-way from

$87
(Connections by easyJet)

Popular in

September

Cheapest in

February

Average price

$699

Good one-way deal

$257 or less
Provider with most accurate pricing for Reykjavik Keflavik Intl-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-Lisbon Humberto Delgado flights.
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From Reykjavik Keflavik Intl to Lisbon Humberto Delgado
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One-way flight from Reykjavik Keflavik Intl to Lisbon Humberto Delgado
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Highest demand for flights based on searches. 33% potential increase in price ($233 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a one-way flight from Reykjavik Keflavik Intl to Lisbon Humberto Delgado.
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Find flight deals from Keflavik Intl to Lisbon

Cheapest flights from Keflavik Intl to Lisbon
Explore the most affordable flight options available from Keflavik Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:05 pmKEF - LIS
1 stop29h 35measyJet
Thu 12/1810:05 amLIS - KEF
1 stop7h 10measyJet
Deal found 10/29$254
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:05 pmKEF - LIS
2 stops21h 00mMultiple Airlines
Thu 12/1810:05 amLIS - KEF
1 stop7h 10mMultiple Airlines
Deal found 10/29$297
This Connections by easyJet deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:45 pmKEF - LIS
1 stop14h 30measyJet
Sat 12/207:50 pmLIS - KEF
1 stop14h 40measyJet
Deal found 10/28$317
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/79:35 amKEF - LIS
1 stop7h 05mMultiple Airlines
Sun 12/148:40 pmLIS - KEF
2 stops23h 00mMultiple Airlines
Deal found 10/29$323
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:45 pmKEF - LIS
1 stop14h 30mMultiple Airlines
Sat 12/209:05 pmLIS - KEF
2 stops27h 10mMultiple Airlines
Deal found 10/29$335
This Connections by easyJet deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/710:05 amKEF - LIS
1 stop9h 15measyJet
Sun 12/1410:20 amLIS - KEF
1 stop8h 20measyJet
Deal found 10/29$355

Cheapflights Fare Finder

 
Customize your flight search to find flights from Keflavik Intl to Lisbon 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 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Lisbon that are best for you.

Fly from

Keflavik Intl

Fly to

Lisbon

Route

Depart

Return

Price

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Thu 12/11

6:05 pm-11:40 pm

1 stop29h 35m

Lisbon Humberto Delgado

Thu 12/18

10:05 am-5:15 pm

1 stop7h 10m

$254

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Thu 12/11

6:05 pm-3:05 pm

2 stops21h 00m

Lisbon Humberto Delgado

Thu 12/18

10:05 am-5:15 pm

1 stop7h 10m

$297

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sat 12/13

7:45 pm-10:15 am

1 stop14h 30m

Lisbon Humberto Delgado

Sat 12/20

4:20 pm-9:25 am

1 stop17h 05m

$320

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Tue 4/7

7:00 pm-8:05 am

1 stop12h 05m

Lisbon Humberto Delgado

Mon 4/13

9:05 am-7:20 pm

2 stops35h 15m

$326

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sat 12/13

7:45 pm-8:30 pm

2 stops24h 45m

Lisbon Humberto Delgado

Sat 12/20

9:05 pm-12:15 am

2 stops27h 10m

$335

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 12/7

10:05 am-7:20 pm

1 stop9h 15m

Lisbon Humberto Delgado

Sun 12/14

10:20 am-6:40 pm

1 stop8h 20m

$355

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Tue 11/18

11:05 am-7:50 pm

2 stops32h 45m

$128

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Wed 3/25

11:55 am-1:40 pm

2 stops25h 45m

$135

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Thu 11/6

9:25 am-8:05 pm

2 stops10h 40m

$161

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Thu 11/6

5:55 pm-10:30 am

1 stop16h 35m

$178

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 13 results
1
2

Compare providers for flights from Keflavik Intl to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Keflavik Intl to Lisbon in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Lisbon flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Reykjavik Keflavik Intl Airport-Lisbon flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Lisbon flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Reykjavik Keflavik Intl Airport-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Keflavik Intl to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Keflavik Intl with our price prediction graph.
Estimated round-trip 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 Reykjavik Keflavik Intl Airport to Lisbon

What is the cheapest time of day to fly from KEF to LIS?

Find hourly flight availability from Keflavik Intl to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

One of the essential ways to save on airfare from Reykjavik Keflavik Intl Airport to Lisbon is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 22% on airfare.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated October 30, 2025.
Read reviews from past customers who have flown Icelandair, TAP AIR PORTUGAL, and PLAY from Reykjavik Keflavik Intl Airport to Lisbon. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.1
Good
562 reviews

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.1

Boarding

7.2

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
Icelandair
7.1
Good
562 reviews
Icelandair
7.1
Good
562 reviews

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.1

Boarding

7.2

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
TAP AIR PORTUGAL
7.1
Good
2,040 reviews
Icelandair
7.1
Good
562 reviews

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.1

Boarding

7.2

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
PLAY
7.0
Good
Icelandair
7.1
Good
562 reviews

Comfort

6.9

Entertainment

7.0

Food

6.2

Overall

7.1

Boarding

7.2

Crew

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

Related info for your journey

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

    Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Reykjavik Keflavik Intl. On average, Humberto Delgado has 0 inbound flights from Reykjavik Keflavik Intl per day from 3 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

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

    For as low as $254, easyJet can have you in Lisbon from Reykjavik Keflavik Intl Airport in 29h 35m. There are 1826 mi between Reykjavik Keflavik Intl Airport and Lisbon.

  • What are the cheapest airlines flying from Reykjavik Keflavik Intl Airport to Lisbon round-trip?

    Our cheapest airline available from Reykjavik Keflavik Intl Airport to Lisbon is Icelandair. Our recent data shows that you can find tickets from as low as $223 on this airline. Additional options worth looking into are PLAY and TAP AIR PORTUGAL, starting at $264 and $350 round-trip. Icelandair is currently priced 51% below the average price you’ll pay for this route.

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

    While on average a flight from Reykjavik Keflavik Intl Airport to Lisbon is generally $394, our data shows the cheapest flight currently is $180. When looking at the most popular route, (Reykjavik Keflavik Intl - Lisbon Humberto Delgado), you can expect to pay $11,863 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Keflavik Intl to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Oeiras
Nazaré
Ericeira
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Torres Vedras
Beja
Sesimbra
Colares

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Top 3 airlines flying from Keflavik Intl to Lisbon

Discover the top 3 airlines that operate flights from Keflavik Intl to Lisbon. 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 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$223Average$416FlexibilityNo cancel feeOn-time76%
PLAYCheapest$264Average$368FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$350Average$725FlexibilityNo cancel feeOn-timeN/A

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