$648 Cheap Cathay Pacific flights Boston (BOS) to Jeju (CJU)

View $648 flight on Mon, Aug 25, 2025Opens in a new window

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$648 Cheap Cathay Pacific flights Boston (BOS) to Jeju (CJU)

Prices were available within the past 7 days and start at $648 for one-way flights and $975 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Thu, Sep 4 - Wed, Sep 10
BOS
Boston
CJU
Jeju City
$975 Roundtrip, found 3 days ago
$975
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Thu, Sep 4 from Boston to Jeju City, returning Wed, Sep 10, priced at $975 found 3 days ago
Cathay Pacific
Thu, Sep 11 - Sun, Sep 21
BOS
Boston
CJU
Jeju City
$1,025 Roundtrip, found 16 hours ago
$1,025
Roundtrip
found 16 hours ago
Select Cathay Pacific flight, departing Thu, Sep 11 from Boston to Jeju City, returning Sun, Sep 21, priced at $1,025 found 16 hours ago
Cathay Pacific
Mon, Sep 8 - Thu, Sep 18
BOS
Boston
CJU
Jeju City
$1,175 Roundtrip, found 10 hours ago
$1,175
Roundtrip
found 10 hours ago
Select Cathay Pacific flight, departing Mon, Sep 8 from Boston to Jeju City, returning Thu, Sep 18, priced at $1,175 found 10 hours ago
Cathay Pacific
Wed, Oct 15 - Sat, Oct 25
BOS
Boston
CJU
Jeju City
$1,519 Roundtrip, found 5 days ago
$1,519
Roundtrip
found 5 days ago
Select Cathay Pacific flight, departing Wed, Oct 15 from Boston to Jeju City, returning Sat, Oct 25, priced at $1,519 found 5 days ago
Cathay Pacific
Fri, Jul 18 - Tue, Jul 22
BOS
Boston
CJU
Jeju City
$1,735 Roundtrip, found 2 days ago
$1,735
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Fri, Jul 18 from Boston to Jeju City, returning Tue, Jul 22, priced at $1,735 found 2 days ago
Cathay Pacific
Mon, Jul 14 - Mon, Jul 21
BOS
Boston
CJU
Jeju City
$1,919 Roundtrip, found 1 day ago
$1,919
Roundtrip
found 1 day ago
Select Cathay Pacific flight, departing Mon, Jul 14 from Boston to Jeju City, returning Mon, Jul 21, priced at $1,919 found 1 day ago
Flights from Boston (BOS) to Jeju (CJU)
Origin airport
Logan Intl.
Destination airport
Jeju Intl.
Airlines serving
Cathay Pacific, China Eastern Airlines, Korean Air
Popular airline
Cathay Pacific
Distance
7078 mi

Frequently asked questions

How much is a Cathay Pacific flight from Logan Intl. Airport (BOS) to Jeju Intl. Airport (CJU)?
Finding cheap one-way Cathay Pacific flights from BOS to CJU from $648 on Expedia is a cinch --- just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares from $975 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BOS to CJU with Cathay Pacific?
January is one of the cheapest months to get away to Jeju City with Cathay Pacific. You could also find fantastic deals on one-way and return fares in February.
What is the cheapest time to book flights from Logan Intl. Airport (BOS) to Jeju Intl. Airport (CJU) with Cathay Pacific?
Start your search for Cathay Pacific flights from BOS to CJU about one month before you want to go. The most affordable time to book an international flight is generally 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of fare class and itinerary, the best day to book international airfare is usually Sunday. Friday can be the most expensive. Passengers booking on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Cathay Pacific fly nonstop from Logan Intl. Airport (BOS) to Jeju Intl. Airport (CJU)?
Click on our "Nonstop" filter when searching for direct Cathay Pacific flights from BOS to CJU. You'll also be able to compare other carriers servicing the same direct route.
What is the earliest Cathay Pacific flight from BOS to CJU?
Search Cathay Pacific's earliest flights from BOS to CJU by selecting the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Cathay Pacific fly into in Jeju City?
Hop on a Cathay Pacific flight from Logan Intl. Airport (BOS) to Jeju City, and you'll most likely touch down at Jeju Intl. Airport (CJU). This is the airline's main hub here.
What kind of luggage can I take on a Cathay Pacific flight from Logan Intl. Airport (BOS) to Jeju Intl. Airport (CJU)?
With Cathay Pacific, you can fly standard economy from BOS to CJU with a small personal item and 1 cabin bag. Your carry-on bag should be no larger than 22 inches x 9 inches x 14 inches and weigh under 33 lb. Going over these restrictions may lead to extra fees, so read your airline's latest guidelines before confirming your booking.
Why fly with Cathay Pacific from BOS to CJU?
Cathay Pacific makes flying from BOS to CJU more enjoyable with an excellent in-flight experience and a 5-star airline rating. You also have the chance to earn points with Marco Polo Club. Remember to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Cathay Pacific flight from Logan Intl. Airport (BOS) to Jeju Intl. Airport (CJU)?
Changes are often free within 24 hours of making a booking, but your airline may charge a fee after that. For further information about altering your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to make changes without additional charges, tick the "Changes included" or "No cancel fee" filter when planning your next getaway.

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