$107+ Cheap flights from Keflavik Intl (KEF) to Lisbon (LIS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LIS
Oct 4 — Oct 111
Round-trip
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
Cheapest
Best
Last-minute
One-way
Cheapest flights from Keflavik Intl to LisbonExplore 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 September 4, 2026.
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 September 4, 2026.
This Connections by easyJet deal was found by Cheapflights users on 9/3. 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.
Mon 10/267:35 pm -
1 stop14h 45m
Tue 11/35:10 pm -
1 stop17h 50m
Deal found 9/3![easyJet logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Sun 10/259:45 pm -
1 stop23h 15m
Tue 11/35:10 pm -
1 stop16h 40m
Deal found 9/1![Multiple Airlines logo]()
$236
This Connections by easyJet deal was found by Cheapflights users on 9/3. 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 10/2510:05 am -
1 stop9h 10m
Tue 11/35:10 pm -
1 stop17h 50m
Deal found 9/3![easyJet logo]()
$268
This Mytrip deal was found by Cheapflights users on 9/4. 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.
Tue 10/67:55 pm -
2 stops18h 45m
Tue 10/209:35 pm -
2 stops22h 40m
Deal found 9/4![Multiple Airlines logo]()
$284
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:10 pm -
1 stop30h 15m
Tue 10/205:55 am -
1 stop10h 20m
Deal found 9/4![SWISS logo]()
$289
This Connections by easyJet deal was found by Cheapflights users on 9/1. 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.
Fri 12/1811:40 am -
1 stop11h 25m
Mon 1/43:10 pm -
1 stop20h 45m
Deal found 9/1![easyJet logo]()
$291
This FlightHub deal was found by Cheapflights users on 8/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:10 pm -
1 stop8h 20m
Tue 12/15:00 am -
1 stop9h 25m
Deal found 8/31![Lufthansa logo]()
$310
This Lufthansa deal was found by Cheapflights users on 8/31. 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.
Thu 12/243:10 pm -
1 stop17h 20m
Thu 1/146:05 am -
1 stop8h 15m
Deal found 8/31![Lufthansa logo]()
$330
Best flights from Keflavik Intl to LisbonDiscover carefully curated flight deals from Keflavik Intl to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Keflavik Intl to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This Connections by easyJet deal was found by Cheapflights users on 8/31. 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 10/2510:05 am -
1 stop9h 10m
Tue 11/35:10 pm -
1 stop17h 50m
Deal found 8/31![easyJet logo]()
$278
This KLM deal was found by Cheapflights users on 9/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:15 pm -
1 stop14h 40m
Sun 10/255:00 am -
1 stop15h 10m
Deal found 9/3![KLM logo]()
$404
This British Airways deal was found by Cheapflights users on 9/1. 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.
Mon 12/2111:55 am -
1 stop27h 00m
Tue 1/57:05 am -
1 stop27h 45m
Deal found 9/1![British Airways logo]()
$657
This Connections by easyJet deal was found by Cheapflights users on 9/1. 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.
Fri 10/910:45 am -
1 stop11h 45m
Thu 10/297:10 pm -
1 stop15h 40m
Deal found 9/1![easyJet logo]()
$435
This KLM deal was found by Cheapflights users on 9/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:50 am -
1 stop13h 00m
Wed 10/285:00 am -
1 stop8h 45m
Deal found 9/2![KLM logo]()
$499
This KLM deal was found by Cheapflights users on 9/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:55 am -
2 stops22h 35m
Sun 11/155:00 am -
1 stop8h 45m
Deal found 9/2![KLM logo]()
$644
This Connections by easyJet deal was found by Cheapflights users on 9/3. 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.
Fri 9/1810:45 am -
1 stop11h 45m
Mon 9/218:50 am -
1 stop24h 55m
Deal found 9/3![easyJet logo]()
$664
Last-minute flights from Keflavik Intl to LisbonDiscover last-minute flight deals from Keflavik Intl to Lisbon. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Keflavik Intl to Lisbon. Data last updated September 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/4. 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.
Tue 10/67:55 pm -
2 stops18h 45m
Tue 10/209:35 pm -
2 stops22h 40m
Deal found 9/4![Multiple Airlines logo]()
$284
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:10 pm -
1 stop30h 15m
Tue 10/205:55 am -
1 stop10h 20m
Deal found 9/4![SWISS logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Fri 10/95:45 pm -
2 stops38h 50m
Wed 10/286:15 am -
1 stop11h 00m
Deal found 9/1![Multiple Airlines logo]()
$338
This Mytrip deal was found by Cheapflights users on 8/31. 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 10/1112:55 am -
2 stops19h 10m
Mon 10/1910:45 pm -
2 stops20h 55m
Deal found 8/31![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Sun 10/259:45 pm -
1 stop23h 15m
Tue 11/35:10 pm -
1 stop16h 40m
Deal found 9/1![Multiple Airlines logo]()
$236
This Connections by easyJet deal was found by Cheapflights users on 9/3. 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 10/2510:05 am -
1 stop9h 10m
Tue 11/35:10 pm -
1 stop17h 50m
Deal found 9/3![easyJet logo]()
$268
This Connections by easyJet deal was found by Cheapflights users on 9/3. 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.
Mon 10/267:35 pm -
1 stop14h 45m
Tue 11/35:10 pm -
1 stop17h 50m
Deal found 9/3![easyJet logo]()
$206
One-way flights from Keflavik Intl to LisbonSearch for one-way flight options from Keflavik Intl to Lisbon. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Keflavik Intl to Lisbon. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Connections by easyJet deal was found by Cheapflights users on 9/4. 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.
Mon 12/712:05 pm -
1 stop22h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![easyJet logo]()
$107
This Connections by easyJet deal was found by Cheapflights users on 9/3. 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 12/139:45 pm -
1 stop15h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![easyJet logo]()
$121
This Vueling Global deal was found by Cheapflights users on 9/4. 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1712:45 pm -
1 stop7h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Vueling logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Wed 10/147:05 pm -
2 stops25h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Mon 12/1410:30 am -
2 stops13h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 10/1511:45 am -
3 stops22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$155
This Connections by easyJet deal was found by Cheapflights users on 9/1. 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 11/18:15 pm -
1 stop16h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![easyJet logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/19:00 am -
1 stop13h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$169
This Trip.com deal was found by Cheapflights users on 9/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 am -
1 stop11h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![easyJet logo]()
$171
Find 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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $206 (Connections by easyJet) |
One-way from | $107 (Connections by easyJet) |
Popular in | July |
Cheapest in | January |
Average price | $670 |
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 7,457,451 searches. Data last updated September 4, 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Lisbon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Mon 12/7
12:05 pm-10:20 am
1 stop22h 15m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$107
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Sun 12/13
9:45 pm-12:45 pm
1 stop15h 00m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$121
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Wed 10/14
7:05 pm-9:45 pm
2 stops25h 40m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$137
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Mon 12/7
3:45 pm-10:10 am
2 stops18h 25m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$169
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Tue 9/29
7:55 pm-10:30 pm
2 stops25h 35m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$177
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Tue 10/6
6:00 pm-8:30 am
1 stop13h 30m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$178
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Mon 9/28
8:35 am-8:50 am
2 stops23h 15m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$201
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Wed 9/30
7:55 pm-4:35 pm
3 stops19h 40m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$206
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Thu 10/15
10:15 am-11:30 pm
1 stop12h 15m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$216
ReykjavikLisbon
KEF Reykjavik Keflavik Intl - LIS Lisbon Humberto Delgado
KEFLIS
Reykjavik Keflavik Intl
Fri 10/16
8:50 am-10:50 pm
1 stop13h 00m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$233
Showing 1-10 of 18 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-Lisbon flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
KEF-LIS
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
Prices
Delays
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 $370). Flying from Reykjavik Keflavik Intl Airport to Lisbon in July is currently the most expensive (average of $956). 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 to fly round-trip from Reykjavik Keflavik Intl Airport to Lisbon?
Airfare is below average for this route at the moment.
Reykjavik Keflavik Intl Airport to Lisbon flights typically cost between $438 and $727 in October.The cheapest round-trip price found within the last 5 days was $206 on easyJet (Oct 26-Nov 3).
How often are flights from Reykjavik to Lisbon delayed?
About 8% of weekly flights between Reykjavik and Lisbon have experienced delays in the past year, with the average delay time being 62 minutes.
What is the most punctual flight time for Reykjavik to Lisbon flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Reykjavik to Lisbon flights?
Over the last year, Icelandair have had the lowest number of delays on this route, with just 9% of flights being delayed.
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.
Traveling to a place near Lisbon?
Book flights to Lisbon if you plan to visit one of these locationsFátima
Ericeira
Oeiras
Torres Vedras
Beja
Nazaré
Colares
Sesimbra
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.
Complete your trip
Flights by cabin class
Lisbon flight routes
Other flight options
Other flights from Keflavik Intl
Popular flights