HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Busan

$352+ Cheap flights from Irvine, CA to Busan (PUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PUS
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Irvine to Busan with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Irvine to Busan Gimhae are usually found in September or October, booked 44 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Irvine to Busan

Keep the following information in mind while searching for Irvine to Busan flight deals. Data was last updated September 16, 2025.

Round-trip from

$650
(FlightHub)

One-way from

$352
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$941
From Irvine to Busan Gimhae
Search Deals
One-way flight from Irvine to Busan Gimhae
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Irvine to Busan

Cheapest flights from Irvine to Busan
Explore the most affordable flight options available from Irvine to Busan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This FlightHub deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:30 amLAX - PUS
1 stop31h 05mChina Eastern
Wed 11/1912:35 pmPUS - LAX
1 stop37h 30mChina Eastern
Deal found 9/15$650
This Gurufare deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:30 pmLAX - PUS
1 stop31h 05mChina Eastern
Thu 11/65:50 pmPUS - LAX
1 stop32h 15mChina Eastern
Deal found 9/15$680
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:30 pmLAX - PUS
1 stop31h 05mChina Eastern
Wed 11/55:50 pmPUS - LAX
1 stop32h 15mChina Eastern
Deal found 9/14$711
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:50 amLAX - PUS
1 stop29h 40mMultiple Airlines
Mon 10/276:50 amPUS - LAX
2 stops30h 49mMultiple Airlines
Deal found 9/13$733
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:50 amLAX - PUS
1 stop38h 00mMultiple Airlines
Mon 10/272:40 pmPUS - LAX
2 stops22h 59mMultiple Airlines
Deal found 9/13$755
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1410:50 amLAX - PUS
1 stop29h 40mMultiple Airlines
Sun 10/266:50 amPUS - LAX
2 stops29h 29mMultiple Airlines
Deal found 9/13$756
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1412:30 pmLAX - PUS
1 stop36h 20mChina Eastern
Mon 10/275:50 pmPUS - LAX
1 stop32h 15mChina Eastern
Deal found 9/13$758
This Gurufare deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1511:30 amLAX - PUS
1 stop31h 05mChina Eastern
Tue 11/255:50 pmPUS - LAX
1 stop32h 15mChina Eastern
Deal found 9/16$787
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1710:50 amLAX - PUS
1 stop29h 40mMultiple Airlines
Wed 9/247:15 amPUS - LAX
1 stop26h 05mMultiple Airlines
Deal found 9/16$797
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:30 pmLAX - PUS
1 stop31h 05mChina Eastern
Thu 10/235:50 pmPUS - LAX
1 stop32h 15mChina Eastern
Deal found 9/16$805

Cheapflights Fare Finder

 
Customize your flight search to find flights from Irvine to Busan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Irvine to Busan that are best for you.

Fly from

Irvine

Fly to

Busan

Route

Depart

Return

Price

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 11/5

11:30 am-11:35 am

1 stop31h 05m

Busan Gimhae

Wed 11/19

12:35 pm-9:05 am

1 stop37h 30m

$650

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Thu 10/30

12:30 pm-4:50 pm

1 stop36h 20m

Busan Gimhae

Thu 11/6

5:50 pm-9:05 am

1 stop32h 15m

$709

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 10/14

10:50 am-8:30 am

1 stop29h 40m

Busan Gimhae

Mon 10/27

6:50 am-9:39 pm

2 stops30h 49m

$733

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 10/15

10:50 am-4:50 pm

1 stop38h 00m

Busan Gimhae

Mon 10/27

2:40 pm-9:39 pm

2 stops22h 59m

$755

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 10/14

10:50 am-8:30 am

1 stop29h 40m

Busan Gimhae

Sun 10/26

6:50 am-8:19 pm

2 stops29h 29m

$756

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Sat 11/15

11:30 am-11:35 am

1 stop31h 05m

Busan Gimhae

Tue 11/25

5:50 pm-9:05 am

1 stop32h 15m

$787

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Thu 10/16

12:30 pm-11:35 am

1 stop31h 05m

Busan Gimhae

Thu 10/23

5:50 pm-10:05 am

1 stop32h 15m

$805

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 10/15

10:50 am-8:30 am

2 stops29h 40m

Busan Gimhae

Wed 10/22

7:50 am-8:25 am

1 stop16h 35m

$894

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Thu 10/16

10:25 am-7:15 pm

1 stop16h 50m

Busan Gimhae

Thu 10/23

3:05 pm-9:28 pm

2 stops22h 23m

$995

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 10/14

12:05 am-7:00 pm

1 stop26h 55m

Busan Gimhae

Wed 10/22

10:20 am-8:45 pm

1 stop26h 25m

$998

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 18 results
1
2

Best time to book a flight from Irvine to Busan

Have a flexible travel schedule? Discover the best time to fly to Busan from Irvine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Irvine to Busan

How far ahead should I book a flight from Irvine to Busan?

Use this chart to determine the optimal time to book a round-trip flight from Irvine to Busan. Price data was last updated on September 12, 2025.

The best time to book flights from Irvine to Busan is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Irvine to Busan?

Currently, August is the cheapest month in which you can book a flight from Irvine to Busan (average of $1,166). Flying from Irvine to Busan in December is currently the most expensive (average of $2,244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IR9 to PUS?

Find hourly flight availability from Irvine to Busan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Irvine to Busan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Irvine to Busan?

Reviews of airlines servicing Busan

Get insights into the airlines that provide service to Busan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Busan. Reviews last updated September 16, 2025.
Get a feel of what it's like to fly with Korean Air, China Airlines, and Cathay Pacific from Irvine to Busan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
767 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.6
Good
994 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air China
7.3
Good
101 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Eastern
7.2
Good
166 reviews
Korean Air
8.4
Very good
1,140 reviews

Boarding

8.5

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Irvine to Busan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Busan from Irvine?

    Busan Gimhae (PUS), located 7.2 mi from the city center, is the airport you fly into when you book flights from Irvine to Busan. 5 airlines have flights to Gimhae from Irvine on a regular basis. Booking flights from Irvine to Busan Gimhae should not be difficult; the airport handles an average of 0 inbound flights from Irvine per day.

  • How long is the flight from Irvine to Busan?

    China Eastern can get you from Irvine to Busan in just under 31h 05m. Your travel time can differ by up to . The distance from Irvine to Busan is about 5974 mi.

  • Can I find deals for flights from Irvine to Busan that include hotel bookings?

    Yes. In addition to deals on Irvine to Busan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Irvine to Busan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Busan.

  • Can I find deals for business class flights from Irvine to Busan?

    Yes. Cheapflights offers flight deals from Irvine to Busan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Irvine to Busan?

    Currently, August is the cheapest month in which you can book a flight from Irvine to Busan (average of $1,166). Flying from Irvine to Busan in December is currently the most expensive (average of $2,244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Irvine to Busan

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Incheon Intl flights
San Francisco to Incheon Intl flights
Los Angeles to Gimpo Intl flights
San Francisco to Gimpo Intl flights
Ontario to Incheon Intl flights
San Jose to Incheon Intl flights
Santa Ana to Incheon Intl flights
Burbank to Incheon Intl flights
Las Vegas to Incheon Intl flights
San Diego to Incheon Intl flights
San Jose to Gimpo Intl flights
Oakland to Incheon Intl flights
San Diego to Gimpo Intl flights
Las Vegas to Gimpo Intl flights
Los Angeles to Busan flights
Long Beach to Incheon Intl flights
San Francisco to Busan flights
Sacramento to Incheon Intl flights
Monterey to Incheon Intl flights
Reno to Incheon Intl flights
Los Angeles to Jeju City flights
Ontario to Gimpo Intl flights
Ontario to Busan flights
San Francisco to Jeju City flights
San Jose to Busan flights
Palm Springs to Incheon Intl flights
Los Angeles to Cheongju flights
San Diego to Jeju City flights
San Diego to Busan flights
Medford to Incheon Intl flights
Long Beach to Gimpo Intl flights
Los Angeles to Daegu flights
Las Vegas to Busan flights
Oakland to Busan flights
San Francisco to Daegu flights
Santa Ana to Busan flights
San Jose to Jeju City flights
Santa Barbara to Incheon Intl flights
Reno to Busan flights

Top 5 airlines flying from Irvine to Busan

Discover the top 5 airlines that operate flights from Irvine to Busan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest$640Average$788FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$680Average$758FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$760Average$871FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$918Average$1,085FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,175Average$1,468FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.