Disclosure: This article contains affiliate links. If you book through them, we may earn a small commission at no extra cost to you.
Flights from Boston to Europe are short. KAYAK lists an average of about 5 hours 15 minutes to Reykjavik and about 6 hours to Dublin. Short flights do not automatically mean cheap ones, though. The same Amsterdam round trip that costs a typical $578 in February runs $1,138 in June.
This guide compares ten European cities from Boston Logan side by side, adds the cheapest one-way fares that travelers found on Aviasales this month, and shows how to get to the airport for a few dollars. If you are flying from New York instead, see our guide to cheap flights to Europe from NYC. For airlines and tricks that work from anywhere in the country, read cheap flights to Europe from the US.
Fare data
What Flights From Boston to Europe Cost
KAYAK publishes a typical round-trip price for each month on its route pages, based on what its users found over the past 12 months. These are typical prices, not guaranteed fares. We pulled the cheapest and the most expensive month for ten cities with flights from Boston Logan on November 12, 2026.
| From Boston toTo | Cheapest monthLow | Priciest monthPeak | Book aheadBook | Cheapest dayDay |
|---|---|---|---|---|
| Reykjavík | Jan $352 | Aug $637 | 19 wk | Mon |
| Dublin | Feb $437 | Jun $808 | 24 wk | Mon |
| Shannon | Mar $508 | Dec $1,016 | 21 wk | Fri |
| London | Jan $527 | Jun $1,028 | 26 wk | Mon |
| Barcelona. | Feb $534 | Dec $913 | 14 wk | Wed |
| Madrid | Jan $538 | Jun $850 | 9 wk | Tue |
| Amsterdam. | Feb $578 | Jun $1,138 | 9 wk | Fri |
| Ponta DelgadaAzores | Jan $578 | Jul $1,045 | 5 wk | Mon |
| Rome | Feb $604 | Jun $1,130 | n/a | Mon |
| Paris | Feb $638 | Jun $1,097 | 6 wk | Mon |
Source: KAYAK flight route pages from Boston Logan (BOS), checked November 12, 2026. Typical round-trip prices from searches over the past 12 months. “Book ahead” is KAYAK’s cheapest booking point in weeks (wk) before departure; KAYAK showed no booking window for Rome (n/a). “Cheapest day” is the departure day KAYAK users found cheapest. Ponta Delgada is on São Miguel in the Azores (Portugal).
Three patterns stand out. First, winter wins almost everywhere: January is the cheapest month on four routes and February on five. Only Shannon bottoms out later, in March. Second, the peak is mostly June, which is the priciest month on six of the ten routes. Shannon and Barcelona peak in December instead, Reykjavik in August and the Azores in July. Third, the gap between cities is smaller than the gap between months. The ten cities sit within $286 of each other in their cheapest month, but Amsterdam alone swings by $560 across the year.
This month
The Cheapest One-Way Fares Found This Month
KAYAK’s monthly figures show the typical price. To see how low a single fare can go, we also check the Travelpayouts data feed, which records the cheapest one-way fare that Aviasales users found for each departure month. For Boston, our weekly check currently covers the London route. These are fares that showed up in real searches, not guaranteed prices, and they can disappear within hours.
Source: Travelpayouts price data (Aviasales, one way, USD), checked November 9, 2026. For February 2027, no Boston–London fare was recorded in that check.
Both fares route through Keflavik, the same airport that makes Reykjavik the cheapest city in this guide. On KAYAK’s Dublin page, the lowest round trip found in the five days before our check was $471, also on Icelandair, which is a good reminder that a one-stop fare can undercut the nonstop even on a route as busy as Boston to Dublin.
Extra costs
Costs the Fare Search Does Not Show
A cheap ticket is only part of the bill. Boston has one big advantage here: getting to the airport can cost almost nothing. Two other costs are worth knowing before you book.
Bags are the other big variable. Basic economy fares across the Atlantic can leave out a checked bag or a seat choice, so a cheap fare can end up costing more once you add a bag. Our comparison of basic economy vs. main cabin and our airline baggage fees comparison show what each fare type includes. London adds one more cost, since US citizens usually need a UK ETA; our London fare guide explains it.
How-to
How to Find a Cheap Flight to Europe From Boston
- Start with Reykjavik, Dublin and Shannon. If you only want “Europe on a budget,” price these three first. All three were the cheapest cities from Boston in KAYAK’s data, from $352 to $508 typical round trip in their best month.
- Search January to March as a block. Nine of the ten routes bottom out in January or February, and Shannon in March. Avoid June, the peak on six routes, and December if you are heading to Shannon or Barcelona.
- Book on the right clock. KAYAK’s best booking point is 24 to 26 weeks ahead for Dublin and London, 19 to 21 weeks for Reykjavik and Shannon, and just 5 to 9 weeks for the Azores, Paris, Madrid and Amsterdam. Barcelona sits in between at 14 weeks.
- Fly out on a Monday if you can. Monday was the cheapest departure day on six of the ten routes. Madrid (Tuesday), Barcelona (Wednesday), Shannon and Amsterdam (Friday) are the exceptions. For more timing tactics, read our guide to the cheapest day to buy airline tickets.
- Compare one-stop with nonstop. The cheapest fares in this month’s data had a stop in Reykjavik. Price both, then decide if the saving is worth a longer travel day.
Hallgrimskirkja above the rooftops of Reykjavik, the cheapest of the ten cities from Boston in January.
Compare
Reykjavik, Dublin or London: Which Gateway Works Best?
These three cities are the most useful starting points from Boston: they are among the cheapest, the flights are short, and each one connects onward to the rest of Europe. Here is how they compare in KAYAK’s data.
- Lowest month
- $352 (Jan)
- Flight time
- ~5h 15m
- Book ahead
- ~19 weeks
- Lowest month
- $437 (Feb)
- Flight time
- ~6h 04m
- Book ahead
- ~24 weeks
- Lowest month
- $527 (Jan)
- Flight time
- ~6h 43m
- Book ahead
- ~26 weeks
Source: KAYAK route pages, checked November 12, 2026. Flight time is KAYAK’s average duration for the route; the bar compares the three. The buttons open our flight search (powered by Aviasales) for a round trip from Tuesday, January 19, to Tuesday, January 26, 2027. Fares there are live and will not match KAYAK’s figures exactly.
Flight time matters on a red-eye. According to KAYAK’s averages, the Azores are the quickest hop from Boston at about 4 hours 55 minutes, followed by Reykjavik at about 5 hours 15 minutes. Dublin takes about 6 hours, while London, Madrid, Amsterdam and Paris all land in the 6 hour 43 minute to 6 hour 58 minute range. Rome is the longest of the cities we checked, at about 8 hours, and it is also the second most expensive in its cheapest month ($604).
Video
What a Budget Flight From Boston to Reykjavik Looks Like
This trip report from the Troy Santulli channel follows an Icelandair Boeing 767-300 in economy from Boston to Reykjavik. It shows check-in at Logan’s Terminal E, boarding, the economy seat and seatback screen, a night takeoff over Boston, the drinks service and a sunrise landing at Keflavik.
Video: Troy Santulli, “TRIPREPORT | Iceland Air (ECONOMY) | Boeing 767-300 | Boston – Reykjavik,” via YouTube (July 2026). Not affiliated with Greenspicks.
Seasons
Is the Cheapest Month a Good Time to Go?
It depends on the trip you want. January and February bring the lowest fares, short days and cold or wet weather in most of these cities. That suits city breaks built around museums, food and indoor sights. It is also when Reykjavik, London and Madrid are at their cheapest from Boston, and a winter visit to Iceland has its own draw: long nights for northern lights tours.
If you need summer for school holidays, the smallest summer gap is to Reykjavik, where even the August peak ($637) costs less than the cheapest month to Paris. For daily costs once you land, our guide to the true cost of traveling across Europe breaks down hotels, food and transport.
The Colosseum in Rome. From Boston, Rome is cheapest in February ($604) and priciest in June ($1,130).
Save more
Money-Saving Tips for Flights From Boston to Europe
- Take the free bus home. The Silver Line SL1 is free from every Logan terminal, and Logan Express from Back Bay costs $3 with a free ride back.
- Use the cheapest gateway, then connect. Reykjavik, Dublin and Shannon are the cheapest entry points. A short flight or train within Europe can beat a direct fare to a pricier city.
- Check the New York fares too. If you can get to JFK or Newark, compare with our New York to Europe fare guide, which covers ten of the same cities.
- Budget Rome before you book. Our guide to Rome travel costs helps you plan the days after the flight.
- Lock the hotel on its own schedule. Flights and hotels bottom out at different times; see the best time to book hotels.
- Travel off-season on purpose. Our off-season travel cost guide shows where winter trips save the most.
FAQ
FAQ: Cheap Flights From Boston to Europe
What is the cheapest European city to fly to from Boston?
Reykjavik, among the ten cities we checked. KAYAK’s typical round trip from Boston is $352 in January, followed by Dublin ($437 in February), Shannon ($508 in March) and London ($527 in January), checked November 12, 2026.
What is the cheapest month to fly from Boston to Europe?
January or February on nine of the ten routes. January is cheapest to Reykjavik, London, Madrid and the Azores; February to Dublin, Barcelona, Amsterdam, Rome and Paris. Shannon is the exception, with March as its cheapest month.
How far in advance should I book a flight to Europe from Boston?
It depends on the city. KAYAK’s cheapest booking point is 26 weeks ahead for London, 24 for Dublin, 21 for Shannon, 19 for Reykjavik, 14 for Barcelona, 9 for Madrid and Amsterdam, 6 for Paris and 5 for the Azores.
How low can a one-way flight from Boston to Europe go?
In our November 9, 2026 check, the lowest one-way fare from Boston to London was $238 on Icelandair with a stop in Reykjavik, for December 2026 (found November 6). Fares like this can sell out within hours.
How do I get to Logan Airport cheaply?
From Back Bay, Logan Express costs $3 to the airport with a free ride back, according to Massport. Going home, the MBTA’s Silver Line SL1 is free from every terminal. Both were checked on November 12, 2026.
Do I need ETIAS to visit Europe now?
Not yet. The EU’s official ETIAS site says the system is not in operation and no applications are collected. It will cost EUR 20, and the EU will announce the start date several months in advance.
Typical fares, booking windows, cheapest days and flight times in this guide were checked on November 12, 2026, from KAYAK’s route pages from Boston Logan. One-way fares come from the Travelpayouts price data for Aviasales, checked November 9, 2026, with the date each fare was found. Airport transport fares come from the MBTA and Massport, and ETIAS details from the EU’s official site, all checked on November 12, 2026. Fares change daily, so treat them as a guide and check live prices before you book. How we check prices.
