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Keflavik Intl

$323+ Cheap flights from Boston (BOS) to Keflavik Intl (KEF)

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KEF
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Find cheap flights from Boston to Keflavik Intl 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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Boston Logan Intl to Reykjavik Keflavik Intl are usually found in January or March, booked 47 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Boston to Keflavik Intl

Cheapest flights from Boston to Keflavik Intl
Explore the most affordable flight options available from Boston to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:00 am
BOS
-
KEF
1 stop21h 00m
United Airlines
Tue 9/1510:00 am
KEF
-
BOS
2 stops32h 07m
United Airlines
Deal found 7/24$434
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:26 am
BOS
-
KEF
1 stop19h 34m
United Airlines
Sat 11/2112:00 pm
KEF
-
BOS
1 stop12h 15m
United Airlines
Deal found 7/22$436
This United Airlines deal was found by Cheapflights users on 7/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:30 am
BOS
-
KEF
2 stops19h 15m
United Airlines
Wed 7/299:50 am
KEF
-
BOS
2 stops29h 26m
United Airlines
Deal found 7/20$437
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:30 pm
BOS
-
KEF
1 stop16h 15m
United Airlines
Mon 10/1910:00 am
KEF
-
BOS
1 stop29h 55m
United Airlines
Deal found 7/22$438
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:00 am
BOS
-
KEF
2 stops17h 30m
United Airlines
Tue 9/2910:00 am
KEF
-
BOS
2 stops29h 24m
United Airlines
Deal found 7/22$439
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:51 am
BOS
-
KEF
2 stops17h 04m
United Airlines
Thu 10/2912:00 pm
KEF
-
BOS
1 stop13h 43m
United Airlines
Deal found 7/22$440
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:40 am
BOS
-
KEF
1 stop17h 15m
United Airlines
Fri 8/289:15 am
KEF
-
BOS
1 stop16h 12m
United Airlines
Deal found 7/22$441
This United deal was found by Cheapflights users on 7/22. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:50 pm
BOS
-
KEF
1 stop9h 05m
Multiple Airlines
Mon 8/39:15 am
KEF
-
BOS
1 stop9h 26m
Multiple Airlines
Deal found 7/22$442
This United deal was found by Cheapflights users on 7/22. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:00 am
BOS
-
KEF
2 stops19h 30m
Multiple Airlines
Thu 9/1710:00 am
KEF
-
BOS
1 stop16h 40m
Multiple Airlines
Deal found 7/22$443
This Air Canada deal was found by Cheapflights users on 7/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:50 pm
BOS
-
KEF
2 stops33h 55m
Air Canada
Tue 10/2010:00 am
KEF
-
BOS
2 stops12h 07m
Air Canada
Deal found 7/22$444
This United Airlines deal was found by Cheapflights users on 7/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:50 pm
BOS
-
KEF
1 stop10h 00m
United Airlines
Wed 9/1611:00 am
KEF
-
BOS
1 stop12h 28m
United Airlines
Deal found 7/20$445
This Mytrip deal was found by Cheapflights users on 7/22. 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 8/164:55 pm
BOS
-
KEF
1 stop11h 50m
Air Canada
Thu 8/209:15 am
KEF
-
BOS
1 stop28h 30m
Air Canada
Deal found 7/22$446

Find flight deals from Boston to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$434
(United Airlines)

One-way from

$323
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$586

Good round-trip deal

$489 or less

Good one-way deal

$279 or less
Provider with most accurate pricing for Boston Logan Intl-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Reykjavik Keflavik Intl flights.
Search Deals
From Boston Logan Intl to Reykjavik Keflavik Intl
Search Deals
One-way flight from Boston Logan Intl to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Reykjavik Keflavik Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 2,558,603 searches. Data last updated July 25, 2026.
Use the filters below to find and compare flights from Boston to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Sun 11/15

9:12 am-10:00 am

1 stop19h 48m

Reykjavik Keflavik Intl

Sat 11/21

12:00 pm-11:51 pm

1 stop16h 51m

$436
Quickest round-trip

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Mon 10/12

6:55 pm-8:45 am

1 stop9h 50m

Reykjavik Keflavik Intl

Tue 10/20

10:00 am-4:10 pm

1 stop10h 10m

$438

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Thu 10/22

5:50 am-7:55 am

1 stop22h 05m

Reykjavik Keflavik Intl

Mon 10/26

12:00 pm-9:55 pm

2 stops13h 55m

$440

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Sat 9/19

2:28 pm-8:50 am

2 stops14h 22m

Reykjavik Keflavik Intl

Wed 9/23

9:15 am-6:57 pm

2 stops13h 42m

$447

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Sat 9/5

6:54 pm-7:55 am

2 stops33h 01m

Reykjavik Keflavik Intl

Fri 9/11

11:00 am-5:52 pm

1 stop10h 52m

$448

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Thu 8/27

3:30 pm-7:55 am

2 stops12h 25m

Reykjavik Keflavik Intl

Sun 8/30

12:00 pm-9:59 pm

1 stop13h 59m

$453

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Tue 9/15

10:40 am-7:55 am

1 stop17h 15m

Reykjavik Keflavik Intl

Fri 9/18

11:00 am-9:59 pm

1 stop14h 59m

$507

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Thu 8/13

9:06 am-7:40 am

1 stop18h 34m

Reykjavik Keflavik Intl

Wed 8/19

8:45 am-11:59 pm

1 stop19h 14m

$533

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Wed 10/7

8:25 pm-7:55 am

2 stops31h 30m

Reykjavik Keflavik Intl

Mon 10/12

10:00 am-5:42 pm

2 stops35h 42m

$577

BostonReykjavik

BOS - KEF

BOSKEF

Boston Logan Intl

Mon 9/14

7:23 pm-7:00 am

2 stops31h 37m

Reykjavik Keflavik Intl

Sun 9/20

9:15 am-9:50 am

1 stop28h 35m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Boston to Keflavik Intl

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 Boston to Keflavik Intl in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 Boston-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Reykjavik Keflavik Intl Airport 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 Boston-Reykjavik Keflavik Intl Airport 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 Boston to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Boston 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 Boston to Reykjavik Keflavik Intl Airport

How far ahead should I book a flight from Boston to Reykjavik Keflavik Intl Airport?

The best time to book flights from Boston to Reykjavik Keflavik Intl Airport is 45 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Boston to Reykjavik Keflavik Intl Airport (average of $303). Flying from Boston to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $601). 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 BOS to KEF?

Find hourly flight availability from Boston 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 July 25, 2026.

It’s optimal to fly from Boston to Reykjavik Keflavik Intl Airport in the morning. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from Boston to Reykjavik Keflavik Intl Airport?

Airfare is below average for this route at the moment.

Boston to Reykjavik Keflavik Intl Airport flights typically cost between $516 and $722 in September.
The cheapest round-trip price found within the last 5 days was $434 on United Airlines (Sep 11-Sep 15).

The best insider tips for Boston to Reykjavik Keflavik Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to Reykjavik Keflavik Intl Airport trip
Our travel experts
Victoria M. Walker

Victoria M. Walker

Expert on PLAY

Victoria M. Walker is an award-winning travel reporter who writes the “Carrying On” newsletter. Victoria writes about airlines and hotels and fell in love with travel after her first flight in 2014. She was raised in Virginia and is based in Brooklyn, NY. She is interested in finding the best pizza and coffee in every city she visits.

Read more
Bill Fink

Bill Fink

Expert on Icelandair

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated July 25, 2026.
Read reviews from past customers who have flown United Airlines,Air Canada, andIcelandair from Boston to Reykjavik Keflavik Intl Airport. 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.
United Airlines
7.4
Good
10,036 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,036 reviews
United Airlines
7.4
Good
10,036 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
Air Canada
7.1
Good
11,386 reviews
United Airlines
7.4
Good
10,036 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
Icelandair
7.0
Good
716 reviews
United Airlines
7.4
Good
10,036 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

Related info for your journey

Find useful and relevant information for your journey from Boston 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 Boston to Reykjavik Keflavik Intl?

    If you book a flight to Reykjavik Keflavik Intl from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There is 1 flight from Logan Intl to Reykjavik Keflavik Intl per day from 3 different airlines.

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

    United Airlines can get you from Boston to Reykjavik Keflavik Intl Airport in just under 19h 48m. Your travel time can differ by up to . The distance between Boston and Reykjavik Keflavik Intl Airport is about 2406 mi.

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

    Our cheapest airline available from Boston to Reykjavik Keflavik Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as $297 on this airline. Additional options worth looking into are United Airlines and Air Canada, starting at $407 and $458 round-trip. Icelandair is currently priced 37% below the average price you’ll pay for this route.

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

    Looking at all options, your cheapest flight can be booked for $213. While the most popular route (Boston Logan Intl - Reykjavik Keflavik Intl) can be booked for $415 on average, our data indicates $1,283 when flying from Boston to Reykjavik Keflavik Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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 Boston to Reykjavik Keflavik Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Boston to Reykjavik Keflavik Intl Airport (average of $303). Flying from Boston to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $601). 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
Keflavik
Hveragerdi

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Alternative routes for Boston to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
Hartford to Keflavik Intl flights
Albany to Keflavik Intl flights

Top 3 airlines flying from Boston to Keflavik Intl

Discover the top 3 airlines that operate flights from Boston to Keflavik Intl. 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 July 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$297Average$508FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$407Average$483FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$458Average$497FlexibilityNo cancel feeOn-time67%

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