$351 Find Cheap Flights from Boston to Luxembourg

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Luxembourg departing on 7/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Book Cheap Boston to Luxembourg Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Luxembourg that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Luxembourg

Sun, Oct 18 - Sat, Nov 7
TAP AIR PORTUGAL Logo
6:05 pm - 11:25 am
BOS
-
LUX
11h 20m
1 stop
TAP AIR PORTUGAL Logo
12:05 pm - 7:55 pm
LUX
-
BOS
13h 50m
1 stop
$617TAP AIR PORTUGAL
Mon, Aug 17 - Mon, Aug 24
British Airways Logo
7:25 am - 10:35 am
BOS
-
LUX
21h 10m
1 stop
British Airways Logo
9:05 pm - 4:55 pm
LUX
-
BOS
25h 50m
1 stop
$623British Airways
Sun, Oct 18 - Sat, Nov 7
TAP AIR PORTUGAL Logo
6:05 pm - 11:25 am
BOS
-
LUX
11h 20m
1 stop
TAP AIR PORTUGAL Logo
12:05 pm - 7:55 pm
LUX
-
BOS
13h 50m
1 stop
$624TAP AIR PORTUGAL
Sun, Oct 25 - Sun, Nov 15
TAP AIR PORTUGAL Logo
7:00 pm - 11:15 am
BOS
-
LUX
11h 15m
1 stop
TAP AIR PORTUGAL Logo
5:40 pm - 2:40 pm
LUX
-
BOS
27h 00m
1 stop
$634TAP AIR PORTUGAL
Sun, Oct 18 - Sat, Nov 7
Multiple Airlines Logo
5:00 pm - 1:25 pm
BOS
-
LUX
14h 25m
2 stops
Multiple Airlines Logo
10:45 am - 8:20 pm
LUX
-
BOS
15h 35m
1 stop
$635Multiple Airlines
Wed, Sep 16 - Wed, Sep 30
Multiple Airlines Logo
10:55 pm - 5:35 pm
BOS
-
LUX
12h 40m
1 stop
Multiple Airlines Logo
12:00 pm - 9:05 pm
LUX
-
BOS
15h 05m
1 stop
$640Multiple Airlines
Sun, Oct 25 - Sun, Nov 15
TAP AIR PORTUGAL Logo
7:00 pm - 11:15 am
BOS
-
LUX
11h 15m
1 stop
TAP AIR PORTUGAL Logo
5:40 pm - 8:45 pm
LUX
-
BOS
57h 05m
2 stops
$643TAP AIR PORTUGAL
Sun, Oct 18 - Sat, Nov 7
TAP AIR PORTUGAL Logo
6:05 pm - 11:25 am
BOS
-
LUX
11h 20m
1 stop
TAP AIR PORTUGAL Logo
12:05 pm - 8:45 pm
LUX
-
BOS
38h 40m
2 stops
$648TAP AIR PORTUGAL
Sun, Oct 18 - Sat, Nov 7
SWISS Logo
9:40 pm - 9:30 am
BOS
-
LUX
29h 50m
1 stop
SWISS Logo
7:15 pm - 8:20 pm
LUX
-
BOS
31h 05m
1 stop
$650SWISS
Sun, Aug 9 - Mon, Aug 17
British Airways Logo
7:30 pm - 4:00 pm
BOS
-
LUX
14h 30m
1 stop
British Airways Logo
9:05 pm - 4:55 pm
LUX
-
BOS
25h 50m
1 stop
$653British Airways
Booking Insights

KAYAK's insights & trends for Boston to Luxembourg flights

Get data-powered insights and trends into flights from Boston to Luxembourg to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to Luxembourg?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Luxembourg, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Luxembourg is May, when tickets cost $326 (return) on average. On the other hand, the most expensive months are February and June, when the average cost of round-trip tickets is $496 and $493 respectively.

How far in advance should I book a flight from Boston to Luxembourg?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Luxembourg, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Luxembourg, you should book around 3 weeks before departure, which saves you about 59% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$351
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Boston to Luxembourg

FAQs - booking Luxembourg flights

  • How does KAYAK find such low prices on flights from Boston to Luxembourg?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Luxembourg.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Luxembourg?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Luxembourg is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Luxembourg?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boston to Luxembourg with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Luxembourg?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boston to Luxembourg up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Boston to Luxembourg

 
Need help choosing which airline to fly with from Boston to Luxembourg? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
SWISSOverall score based on 1945 reviews
8.3Crew
6.8Entertainment
7.7Boarding
7.4Comfort
7.1Food
Airline reviews

The flight and all amenities were good to excellent. SWISS was awful to deal with. Every step of the way they nickel and dime you. Chose your seats? $14. Change your seats… No accounting for the prior payment. You get billed again. 17 pound restriction on overhead luggage, nonsense. It’s a weight in the plane whether it’s in the overhead or in check baggage. They just milk you for every cent they can and I resent it. The flight was excellent.

8.0 ExcellentAnonymous, May 2026
BOS - ZRH
Read more SWISS reviews

The flight and all amenities were good to excellent. SWISS was awful to deal with. Every step of the way they nickel and dime you. Chose your seats? $14. Change your seats… No accounting for the prior payment. You get billed again. 17 pound restriction on overhead luggage, nonsense. It’s a weight in the plane whether it’s in the overhead or in check baggage. They just milk you for every cent they can and I resent it. The flight was excellent.

plenty of legspace, snacks, no pull face from flight attendants when asking for a wine. Also fast transfer ability at ZRH.

The noise in the plane made the highest level of sound in the entertainment system ineffeective. The leg room was better than most flights bu the seats are not made for comfort. Food was ok but nothing to look forward too.

No choice of food was given, and I was served leftovers, so they were returned back. the crew is unfriendly and harsh. Need to be trained on communication.

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

Bad experience overall. Crew did not provide food for our 2 year old (even though we specifically bought a child infant seat for her and literally bought another full price flight), which was unacceptable. And we had to pay $310 each way to carry our ski equipment even though they advertise it as something that is free. Tickets were purchased the same way as usual, but they told us we had Economy Light tickets (I never elected to have such seats). Just plain manipulation and false advertisment. Very disappointed overall about this airline.

The trip was great until my luggage was lost on transfer from United to Swiss. It took Swiss 3 days to get my luggage to me though it was located almost immediately.

It was much better than most airlines we have flown with. It remo des me Swiss Air 25 years ago.

Horrible!! The WiFi was not working, the food was awful

We’ve never been more uncomfortable on a flight than we have on this particular one. The seats in front of us reclined so far back that when the person reclined their seat of broccoli, it almost hit me in the face and left me with literally no room to move that said I had to recline my seed in which made the person behind me upset. It seemed like the seats also would recline without even pressing the button in the armrest and would unrecline as well for that same reason, and it also seemed that some seats reclined more than others. The bottom cushions of the seat were so thin that even after one hour of an 11 hour flight, our tailbones were so sore. It seemed like an overall old airplane. It also didn’t have individual air vents and it was extremely hot the entire flight. Several passengers were commenting on how hot it was. The breakfast was some kind of flavorless triangle, puffy egg, laying in a watery bed of steamed peppers and onions and spinach. It was not appetizing at all. The flight crew was extremely nice so that was a nice thing this flight attendant. They let us try different types of Swiss sodas, which was really nice and the dinner was actually delicious but still overall given the other considerations. It was pretty much a miserable flight without basic seat comfort.

The plane's pilots, including the captain himself, thanked me for the flight. I know it's just marketing, but it was really nice to see these people. It's a great idea. Airplane food is never "good," but the entire crew and flight organization were top-notch. I really liked Delta, and I think I've traveled all over the world, and that was something new for me. Maybe even the old planes, the B767, but next time I have a choice, Delta will be my first choice. Thank you, a satisfied passenger :)

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

Parents with permanently crying baby on board. Neither parents nor crew did anything to calm the baby. The food was extremely disappointing. Seafood stew was very, very small! Not even appetizer size! Seat had a gap in the back. Had to use a pillow to fill it.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Definitely get premium economy on a flight this long if you can. Your legs and while body will thank you.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

Everything you need to know for your flight from Boston to Luxembourg

Information on your arrival and departure airports