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Flights from Boston to Cologne

Search cheap flights from Boston to Cologne in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$406, and round-trip tickets start at US$598.

      • BOS 20:05
        17h 25m
        1 stop
        CGN 19:30
        Boston - Cologne | Mon, May 25 | United Airlines
        CGN 09:35
        34h 15m
        1 stop
        BOS 13:50
        Cologne - Boston | Mon, Jun 1 | Austrian Airlines
        US$598 US$890
        33% off
        33% off
        US$890 US$598
      • BOS 20:05
        17h 25m
        1 stop
        CGN 19:30
        Boston - Cologne | Mon, May 25 | Lufthansa
        CGN 09:35
        34h 15m
        1 stop
        BOS 13:50
        Cologne - Boston | Mon, Jun 1 | Austrian Airlines
        US$599 US$890
        33% off
        33% off
        US$890 US$599
      • BOS 20:05
        15h 35m
        1 stop
        CGN 17:40
        Boston - Cologne | Wed, May 20 | United Airlines
        CGN 08:30
        15h 10m
        1 stop
        BOS 17:40
        Cologne - Boston | Sat, May 23 | Lufthansa
        US$663 US$890
        26% off
        26% off
        US$890 US$663
      • BOS 21:50
        29h 35m
        1 stop
        CGN 09:25
        Boston - Cologne | Mon, May 18 | Turkish Airlines
        CGN 19:10
        30h 45m
        1 stop
        BOS 19:55
        Cologne - Boston | Sat, May 23 | Turkish Airlines
        US$690
        22% off
        US$890 US$690
      • BOS 21:50
        14h 20m
        1 stop
        CGN 18:10
        Boston - Cologne | Wed, May 20 | Turkish Airlines
        CGN 19:10
        30h 45m
        1 stop
        BOS 19:55
        Cologne - Boston | Sat, May 23 | Turkish Airlines
        US$708
        20% off
        US$890 US$708
      • BOS 20:05
        10h 15m
        1 stop
        CGN 12:20
        Boston - Cologne | Wed, May 20 | Lufthansa
        CGN 20:10
        27h 30m
        1 stop
        BOS 17:40
        Cologne - Boston | Sat, May 23 | Lufthansa
        US$711
        20% off
        US$890 US$711
      • BOS 17:10
        20h 45m
        1 stop
        CGN 19:55
        Boston - Cologne | Mon, May 25 | Austrian Airlines
        CGN 08:30
        15h 10m
        1 stop
        BOS 17:40
        Cologne - Boston | Mon, Jun 1 | Lufthansa
        US$712
        20% off
        US$890 US$712
      • BOS 21:50
        14h 20m
        1 stop
        CGN 18:10
        Boston - Cologne | Sun, May 17 | Turkish Airlines
        CGN 14:50
        35h 5m
        1 stop
        BOS 19:55
        Cologne - Boston | Sun, May 24 | Turkish Airlines
        US$729
        18% off
        US$890 US$729
      • BOS 13:00
        17h 25m
        1 stop
        CGN 14:00
        Boston - Cologne | Sun, May 17 | Normal Airline
        CGN 15:00
        6h
        Nonstop
        BOS 16:00
        Cologne - Boston | Tue, May 19 | Normal Airline
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      • BOS 22:50
        18h 20m
        1 stop
        CGN 23:10
        Boston - Cologne | Tue, May 26 | China Express General Aviation Co., Ltd.
        US$406 US$629
        35% off
        35% off
        US$629 US$406
      • BOS 20:10
        16h 50m
        1 stop
        CGN 19:00
        Boston - Cologne | Sun, May 17 | American Airlines
        US$427 US$629
        32% off
        32% off
        US$629 US$427
      • BOS 20:27
        20h 53m
        1 stop
        CGN 23:20
        Boston - Cologne | Sun, Jun 28 | Jetblue Airways
        US$455 US$629
        28% off
        28% off
        US$629 US$455
      • BOS 19:20
        23h 55m
        1 stop
        CGN 01:15
        Boston - Cologne | Sun, Jun 21 | Virgin Atlantic
        US$496
        21% off
        US$629 US$496
      • BOS 19:20
        23h 55m
        1 stop
        CGN 01:15
        Boston - Cologne | Sun, Jun 21 | Delta Air Lines
        US$497
        21% off
        US$629 US$497
      • BOS 23:10
        13h 50m
        1 stop
        CGN 19:00
        Boston - Cologne | Sun, May 17 | Virgin Atlantic
        US$502
        20% off
        US$629 US$502
      • BOS 23:10
        13h 50m
        1 stop
        CGN 19:00
        Boston - Cologne | Sun, May 17 | Delta Air Lines
        US$504
        20% off
        US$629 US$504
      • BOS 19:45
        20h 30m
        1 stop
        CGN 22:15
        Boston - Cologne | Thu, May 28 | Virgin Atlantic
        US$506
        20% off
        US$629 US$506
      • BOS 22:50
        17h 25m
        1 stop
        CGN 22:15
        Boston - Cologne | Thu, May 28 | Jetblue Airways
        US$511
        19% off
        US$629 US$511
      • BOS 18:25
        21h 40m
        1 stop
        CGN 22:05
        Boston - Cologne | Wed, Jun 10 | Jetblue Airways
        US$515
        18% off
        US$629 US$515
      • BOS 13:00
        17h 25m
        1 stop
        CGN 14:00
        Boston - Cologne | Sun, May 17 | Normal Airline
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Displayed flight fares from Boston to Cologne are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Frequently Asked Questions

  • What are the cheapest flights from Boston to Cologne (BOS-CGN)?

    Based on Trip.com data, China Express General Aviation Co., Ltd. offers one-way fares as low as US$406 on Cheapest nonstop routes (e.g. BOS to CGN on Tue, May 26), while United Airlines offers Cheapest nonstop round-trips from US$598 departing on Mon, May 25 and returning on Mon, Jun 1.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boston to Cologne is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Boston to Cologne, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, May 26, with one-way flights priced at just US$406.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is China Express General Aviation Co., Ltd..
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Cologne travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Boston to Cologne is November, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Boston to Cologne on May 19, 2026 with United Airlines, with prices starting at US$598.
  • The time difference between Cologne and Boston is 6h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.