HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Lisbon

$146+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$196
(Connections by easyJet)

One-way from

$146
(PLAY)

Popular in

August

Cheapest in

February

Average price

$452

Good round-trip deal

$613 or less

Good one-way deal

$335 or less
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. 24% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Reykjavik Keflavik Intl to Lisbon Humberto Delgado.
Search Deals
Price to beat on a one-way flight from Reykjavik Keflavik Intl to Lisbon Humberto Delgado.
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 June 12, 2025.

This Connections by easyJet deal was found by Cheapflights users on 6/11. 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.
Tue 9/2312:15 amKEF - LIS
1 stop21h 40measyJet
Tue 9/306:15 amLIS - KEF
1 stop18h 20measyJet
Deal found 6/11$196
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Tue 9/2312:15 amKEF - LIS
2 stops20h 15mMultiple Airlines
Tue 9/306:15 amLIS - KEF
1 stop18h 20mMultiple Airlines
Deal found 6/11$246
This SWISS deal was found by Cheapflights users on 6/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/209:05 amKEF - LIS
2 stops25h 35mSWISS
Thu 6/2611:40 amLIS - KEF
1 stop21h 35mSWISS
Deal found 6/11$311
This Lufthansa deal was found by Cheapflights users on 6/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1612:25 amKEF - LIS
1 stop22h 05mLufthansa
Wed 6/255:05 amLIS - KEF
2 stops28h 15mLufthansa
Deal found 6/11$333
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Fri 8/12:50 pmKEF - LIS
Nonstop4h 30mPLAY
Fri 8/89:20 pmLIS - KEF
Nonstop4h 30mPLAY
Deal found 6/10$353
This Scandinavian Airlines deal was found by Cheapflights users on 6/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/217:35 amKEF - LIS
1 stop14h 15mScandinavian Airlines
Thu 12/41:00 pmLIS - KEF
1 stop21h 45mScandinavian Airlines
Deal found 6/10$354
This British Airways deal was found by Cheapflights users on 6/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:40 amKEF - LIS
2 stops20h 00mBritish Airways
Thu 12/46:35 pmLIS - KEF
1 stop23h 00mBritish Airways
Deal found 6/10$467
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/10. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/227:50 amKEF - LIS
1 stop14h 10mTAP AIR PORTUGAL
Thu 12/49:20 pmLIS - KEF
Nonstop4h 30mTAP AIR PORTUGAL
Deal found 6/10$528
This Icelandair deal was found by Cheapflights users on 6/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/204:00 pmKEF - LIS
Nonstop4h 20mIcelandair
Thu 12/49:20 pmLIS - KEF
Nonstop4h 30mIcelandair
Deal found 6/10$536
This Austrian Airlines deal was found by Cheapflights users on 6/11. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2112:10 amKEF - LIS
2 stops20h 55mAustrian Airlines
Tue 6/245:05 amLIS - KEF
2 stops19h 15mAustrian Airlines
Deal found 6/11$537

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 June 12, 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

Tue 9/23

12:15 am-10:55 pm

1 stop21h 40m

Lisbon Humberto Delgado

Tue 9/30

6:15 am-11:35 pm

1 stop18h 20m

$196

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Tue 9/23

12:15 am-9:30 pm

2 stops20h 15m

Lisbon Humberto Delgado

Tue 9/30

6:15 am-11:35 pm

1 stop18h 20m

$246

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sat 11/22

2:20 pm-2:35 pm

1 stop24h 15m

Lisbon Humberto Delgado

Fri 12/5

6:45 pm-1:20 pm

1 stop18h 35m

$333

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Fri 8/1

2:50 pm-8:20 pm

Nonstop4h 30m

Lisbon Humberto Delgado

Fri 8/8

9:20 pm-12:50 am

Nonstop4h 30m

$353

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Fri 11/21

7:35 am-9:50 pm

1 stop14h 15m

Lisbon Humberto Delgado

Thu 12/4

1:00 pm-10:45 am

1 stop21h 45m

$354

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Tue 6/24

1:15 am-1:40 pm

1 stop11h 25m

Lisbon Humberto Delgado

Tue 7/1

6:15 am-12:10 am

1 stop18h 55m

$387

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Thu 11/20

11:40 am-7:40 am

2 stops20h 00m

Lisbon Humberto Delgado

Thu 12/4

6:35 pm-5:35 pm

1 stop23h 00m

$467

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 6/22

1:00 am-11:55 am

1 stop9h 55m

Lisbon Humberto Delgado

Thu 6/26

3:20 pm-11:55 pm

1 stop9h 35m

$483

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sat 11/22

7:50 am-10:00 pm

1 stop14h 10m

Lisbon Humberto Delgado

Thu 12/4

9:20 pm-1:50 am

Nonstop4h 30m

$528

ReykjavikLisbon

KEF - LIS

KEFLIS

Reykjavik Keflavik Intl

Sun 6/22

12:10 am-11:30 pm

2 stops22h 20m

Lisbon Humberto Delgado

Tue 6/24

5:05 am-11:20 pm

2 stops19h 15m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 32 results
1
2
3
4

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 month to book a flight from Reykjavik Keflavik Intl Airport to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to Lisbon (average of $612). Flying from Reykjavik Keflavik Intl Airport to Lisbon in June is currently the most expensive (average of $1,136). 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 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 June 12, 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 morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Get a feel of what it's like to fly with KLM, LOT and Austrian Airlines from Reykjavik to Lisbon by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
LOT
7.6
Good
1,077 reviews
KLM
7.8
Good
1,358 reviews

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Finnair
7.6
Good
1,290 reviews
KLM
7.8
Good
1,358 reviews

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Air France
7.5
Good
1,463 reviews
KLM
7.8
Good
1,358 reviews

Boarding

7.8

Comfort

7.7

Food

7.2

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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.

  • 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 easyJet. Our recent data shows that you can find tickets from as low as $196 on this airline. Additional options worth looking into are SWISS and PLAY, starting at $333 and $353 round-trip. easyJet is currently priced 52% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Reykjavik Keflavik Intl Airport to Lisbon one-way?

    The cheapest airline one-way is PLAY, with whom users have recently found tickets for as low as $146. However, be on the lookout for offers from Transavia France and Scandinavian Airlines, as they are both options that can get you from Reykjavik Keflavik Intl Airport to Lisbon for a low price.

  • 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 $582, our data shows the cheapest flight currently is $326. When looking at the most popular route, (Reykjavik Keflavik Intl - Lisbon Humberto Delgado), you can expect to pay $593 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.

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

    Currently, January is the cheapest month in which you can book a flight from Reykjavik Keflavik Intl Airport to Lisbon (average of $612). Flying from Reykjavik Keflavik Intl Airport to Lisbon in June is currently the most expensive (average of $1,136). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Sintra
Beja
Nazaré
Ericeira
Costa da Caparica
Evora
Torres Vedras
Oeiras
Sesimbra
Fátima

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$223Average$385FlexibilityNo cancel feeOn-time76%
PLAYCheapest$251Average$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.