HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Lisbon

$145+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LIS
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Keflavik Intl to Lisbon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$306
(Kiwi.com)

One-way from

$145
(Connections by easyJet)

Popular in

September

Cheapest in

February

Average price

$428
Provider with most accurate pricing for Reykjavik Keflavik Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Reykjavik Keflavik Intl-Lisbon Humberto Delgado flights.
Search Deals
From Reykjavik Keflavik Intl to Lisbon Humberto Delgado
Search Deals
One-way flight from Reykjavik Keflavik Intl to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 6, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/410:00 amKEF - LIS
1 stop8h 20mMultiple Airlines
Tue 1/67:30 pmLIS - KEF
2 stops21h 45mMultiple Airlines
Deal found 11/6$306
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/410:00 amKEF - LIS
1 stop8h 20measyJet
Wed 1/76:15 amLIS - KEF
1 stop11h 00measyJet
Deal found 11/6$310
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sat 12/69:05 pmKEF - LIS
1 stop12h 30mMultiple Airlines
Mon 1/57:30 pmLIS - KEF
1 stop20h 55mMultiple Airlines
Deal found 11/6$312
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sat 12/69:05 pmKEF - LIS
1 stop12h 30mMultiple Airlines
Tue 1/68:55 pmLIS - KEF
2 stops20h 20mMultiple Airlines
Deal found 11/6$316
This Mytrip deal was found by Cheapflights users on 11/5. 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 12/78:15 pmKEF - LIS
2 stops20h 10mMultiple Airlines
Sun 12/149:50 pmLIS - KEF
2 stops21h 50mMultiple Airlines
Deal found 11/5$324
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sat 12/69:05 pmKEF - LIS
1 stop12h 30mMultiple Airlines
Wed 1/78:10 pmLIS - KEF
1 stop13h 05mMultiple Airlines
Deal found 11/6$325
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/410:00 amKEF - LIS
1 stop8h 20mMultiple Airlines
Mon 1/57:30 pmLIS - KEF
1 stop20h 55mMultiple Airlines
Deal found 11/6$328
This Connections by easyJet deal was found by Cheapflights users on 11/5. 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 11/5$338

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 November 6, 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

Fri 3/27

7:35 am-9:50 pm

2 stops14h 15m

Lisbon Humberto Delgado

Tue 3/31

4:25 pm-9:40 am

1 stop18h 15m

$345

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

$351

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Wed 12/3

12:55 am-4:50 pm

1 stop15h 55m

Lisbon Humberto Delgado

Tue 1/6

9:00 pm-10:05 am

1 stop13h 05m

$372

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Fri 12/5

7:15 pm-12:40 pm

1 stop17h 25m

Lisbon Humberto Delgado

Mon 1/5

6:25 pm-10:20 am

1 stop15h 55m

$378

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 3/29

7:35 am-10:05 pm

1 stop13h 30m

Lisbon Humberto Delgado

Mon 3/30

4:25 pm-10:15 am

2 stops18h 50m

$408

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 12/7

11:15 am-4:05 pm

2 stops28h 50m

Lisbon Humberto Delgado

Sun 12/14

4:55 pm-12:15 pm

2 stops19h 20m

$466

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 12/7

11:15 am-8:55 am

2 stops21h 40m

Lisbon Humberto Delgado

Wed 1/7

7:00 am-10:45 am

1 stop27h 45m

$518

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 12/7

4:00 pm-8:20 pm

Nonstop4h 20m

Lisbon Humberto Delgado

Wed 1/7

7:00 am-3:20 pm

1 stop8h 20m

$555

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sat 3/28

9:40 am-7:50 pm

1 stop10h 10m

Lisbon Humberto Delgado

Sun 4/5

8:45 am-6:35 pm

1 stop10h 50m

$562

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sat 3/28

7:45 am-9:05 pm

2 stops37h 20m

Lisbon Humberto Delgado

Sun 4/5

7:00 am-10:15 am

1 stop28h 15m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 21 results
1
2
3

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 November.
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 November 6, 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 November 6, 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
572 reviews

Entertainment

7.0

Comfort

6.9

Boarding

7.2

Food

6.2

Crew

8.0

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.
Icelandair
7.1
Good
572 reviews
Icelandair
7.1
Good
572 reviews

Entertainment

7.0

Comfort

6.9

Boarding

7.2

Food

6.2

Crew

8.0

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.
TAP AIR PORTUGAL
7.1
Good
2,048 reviews
Icelandair
7.1
Good
572 reviews

Entertainment

7.0

Comfort

6.9

Boarding

7.2

Food

6.2

Crew

8.0

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.
PLAY
7.0
Good
Icelandair
7.1
Good
572 reviews

Entertainment

7.0

Comfort

6.9

Boarding

7.2

Food

6.2

Crew

8.0

Overall

7.1

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.

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 $351, Scandinavian Airlines can have you in Lisbon from Reykjavik Keflavik Intl Airport in 9h 15m. There are 1826 mi between Reykjavik Keflavik Intl Airport and Lisbon. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

  • 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
Ericeira
Nazaré
Costa da Caparica
Torres Vedras
Beja
Sesimbra
Colares

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 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 November 6, 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

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.