The contract for your rental car is booked directly with our car partners Europcar, Hertz or SIXT and is separate to the Lufthansa flight booking. Earn at least 500 miles with Miles & More for each rental.
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Flight from Boston (BOS) to Trieste (TRS) from 733 $
Fly comfortably and relaxed from Boston to Trieste
Planning to travel from Boston to Trieste? Book your outbound and return flights on swiss.com and enjoy a pleasant travel experience. Whether you’re traveling on business or simply want to take a break in USA, book your next flight on swiss.com and arrive relaxed at your destination.
Discover our selection of round-trip flights from Boston to Trieste on swiss.com and design your journey to suit your needs.
Look forward to Swiss hospitality and a wide range of onboard amenities. On your flight from Boston to Trieste, our experienced crew ensures you’ll feel well taken care of. Culinary highlights are also part of the experience. If you’d like a preview of what’s on offer, simply explore the digital menu for your long-haul flight.
Entertainment is well taken care of, too. Download international newspapers and magazines to your mobile device free of charge with our eJournals, or enjoy our inflight entertainment program with the latest movies, series, and more.
The perfect companion for your trip is the SWISS App. Check in right from your smartphone, keep track of your flight status, manage bookings, and stay informed at all times. Frequent flyers can also benefit from our Miles & More program by earning miles that can be redeemed on swiss.com for rewards, upgrades, and additional flights.
Get inspired on swiss.com and book your round-trip flight from Boston to Trieste starting from 733 $.
Please note: To provide you with the widest possible selection of flight destinations, some of the direct flights or connecting flights on swiss.com are operated by our partner airlines, which may result in a different flight experience than with SWISS.
Log in at swiss.com and use your name, booking code, e-ticket number, or profile to check in online. Select your seat and enter your passport details. You can then have your boarding pass sent to your smartphone or print it out.
Alternatively, you can check in using the SWISS App.
Depending on your travel class and flight duration, you can enjoy a wide variety of culinary delights. Choose from our menu options: SWISS First, SWISS Business, SWISS Premium Economy, SWISS Economy, or SWISS Choice – our à la carte menu. Enjoy our top-quality meals and beverages on board.
The amount and weight of the checked baggage you can bring depends on your travel class. If you're going on a short trip and not taking any checked baggage, keep in mind that overhead space is limited and some items aren’t allowed in the cabin. For full details, please have a look at our baggage guidelines.
On long-haul flights, you can stay connected with our free “Messaging” Wi-Fi package, which lets you use popular messaging apps throughout your flight.
For a more complete internet experience, you can purchase the “Wi-Fi 4 Hours” or “Wi-Fi Premium” packages. Depending on the option you choose, you'll get unlimited web access for either 4 hours or the entire flight.
You can book a flight from Boston to Trieste on swiss.com from 733 $.
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If a flight gets cancelled, we will immediately rearrange the itinerary for all affected travellers. You can view the updated flight details under "My bookings". Our SWISS Chat Assistant Nelly is there to help you if you require assistance.
You are allowed to take a certain amount of checked baggage with you on your flight. The size, weight, and number of items permitted as your checked baggage depends on your fare, route, and frequent flyer status.
Premium Economy Class is our travel class with extra comfort for long-haul flights. Enjoy many benefits such as wider seating with more reclining possibilities for a restful journey.
You have the following upgrade options: booking at a fixed price, making an offer with Bid Upgrade or purchasing an upgrade during online check-in up to 23 hours before departure. You can select these options in "My Bookings." Find more details here.
The time limits for a SWISS Business Class upgrade depend on which upgrade option you choose.
Upgrade for a fixed price: You can book an upgrade at a fixed price anytime up to 24 hours before departure.
Bid Upgrade: If you want to make a bid, your ticket must have been issued at least 72 hours before departure.
Online check-in upgrade: You can upgrade from 23 hours before departure during online check-in.
Business Class upgrade prices with SWISS depend on your flight route, booking class, availability and which upgrade option you choose. You can upgrade for a fixed price, using miles or by making an offer with Bid Upgrade. The exact costs are shown during the booking process. You will find more information here.
Yes, you can use your Miles & More miles for an upgrade on short and long-haul routes. You can redeem your miles for up to 4 passengers. Learn more here.
Cheapest flight from 
Departure and arrival airport BOS-TRS 
Distance approx. 6427km 
