HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Busan

$365+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PUS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 November, booked 46 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap 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 December 18, 2025.

This Philippine Airlines deal was found by Cheapflights users on 12/16. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1610:50 amLAX - PUS
1 stop40h 05mPhilippine Airlines
Fri 12/268:55 pmPUS - LAX
1 stop28h 00mPhilippine Airlines
Deal found 12/16$2,064
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Sun 12/2812:05 amLAX - PUS
1 stop19h 55mMultiple Airlines
Tue 12/308:30 pmPUS - LAX
1 stop27h 50mMultiple Airlines
Deal found 12/16$2,279
This China Airlines deal was found by Cheapflights users on 12/16. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:10 pmLAX - PUS
2 stops28h 40mChina Airlines
Fri 12/2611:50 amPUS - LAX
1 stop24h 35mChina Airlines
Deal found 12/16$2,285
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:17 amLAX - PUS
2 stops33h 33mDelta
Fri 12/264:10 pmPUS - LAX
2 stops22h 39mDelta
Deal found 12/16$2,329
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:00 pmLAX - PUS
1 stop25h 40mEVA Air
Mon 1/56:55 pmPUS - LAX
1 stop37h 15mEVA Air
Deal found 12/17$2,861
This KAYAK deal was found by Cheapflights users on 12/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:30 amLAX - PUS
1 stop31h 05mChina Eastern
Mon 1/512:35 pmPUS - LAX
1 stop37h 30mChina Eastern
Deal found 12/16$2,914

Find flight deals from Irvine to Busan

Keep the following information in mind while searching for Irvine to Busan flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$701
(Kiwi.com)

One-way from

$365
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,779
Provider with most accurate pricing for Los Angeles-Busan Gimhae flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Busan Gimhae flights.
Search Deals
From Irvine to Busan Gimhae
Search Deals
One-way flight from Irvine to Busan Gimhae
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($249 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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 3/4

9:35 am-6:55 pm

1 stop16h 20m

Busan Gimhae

Wed 3/18

9:30 am-8:35 am

1 stop15h 05m

$701

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 2/11

9:35 am-6:55 pm

1 stop16h 20m

Busan Gimhae

Wed 2/25

9:30 am-7:35 am

1 stop15h 05m

$784

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Mon 2/2

11:30 am-11:35 am

1 stop31h 05m

Busan Gimhae

Mon 2/16

12:35 pm-9:05 am

1 stop37h 30m

$818

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Mon 1/19

9:35 am-6:55 pm

1 stop16h 20m

Busan Gimhae

Thu 2/26

9:30 am-7:35 am

1 stop15h 05m

$850

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Thu 1/22

10:50 am-6:55 am

2 stops27h 05m

Busan Gimhae

Wed 1/28

7:20 am-7:35 am

1 stop17h 15m

$863

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Sun 2/1

9:35 am-6:55 pm

1 stop16h 20m

Busan Gimhae

Sun 2/8

9:30 am-7:35 am

1 stop15h 05m

$875

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Mon 3/16

12:30 am-1:45 pm

1 stop21h 15m

Busan Gimhae

Thu 4/30

7:10 pm-8:55 pm

1 stop17h 45m

$903

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Sat 1/17

11:30 am-11:35 am

1 stop31h 05m

Busan Gimhae

Sat 1/31

12:35 pm-9:05 am

1 stop37h 30m

$904

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 3/11

12:05 am-5:40 pm

1 stop25h 35m

Busan Gimhae

Mon 3/16

6:55 pm-7:00 am

1 stop28h 05m

$911

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Sun 1/11

9:35 am-6:55 pm

1 stop16h 20m

Busan Gimhae

Sat 1/17

4:00 pm-7:35 am

2 stops32h 35m

$913

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 21 results
1
2
3

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 December 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, March is the cheapest month in which you can book a flight from Irvine to Busan (average of $680). Flying from Irvine to Busan in June is currently the most expensive (average of $1,397). 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 December 18, 2025.

It’s optimal to fly from Irvine to Busan in the evening. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the morning.

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 December 18, 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
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

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
1,186 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

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
792 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

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
1,095 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

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
178 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

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
7.1
Good
129 reviews
Korean Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

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.

  • What are the cheapest airlines to fly from Irvine to Busan one-way?

    $388 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on Air China and Korean Air, with prices starting from $453 and $458, respectively.

  • 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, March is the cheapest month in which you can book a flight from Irvine to Busan (average of $680). Flying from Irvine to Busan in June is currently the most expensive (average of $1,397). 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
Ontario to Incheon Intl flights
San Francisco to Gimpo Intl flights
Las Vegas to Incheon Intl flights
San Jose to Incheon Intl flights
Santa Ana to Incheon Intl flights
Los Angeles to Busan flights
San Diego to Incheon Intl flights
Burbank to Incheon Intl flights
Las Vegas to Gimpo Intl flights
Ontario to Busan flights
Sacramento to Incheon Intl flights
Oakland to Incheon Intl flights
San Diego to Gimpo Intl flights
San Jose to Gimpo Intl flights
Los Angeles to Jeju City flights
Long Beach to Incheon Intl flights
Medford to Incheon Intl flights
Monterey to Incheon Intl flights
San Francisco to Gwangju flights
Reno to Incheon Intl flights
Los Angeles to Daegu flights
Ontario to Gimpo Intl flights
San Diego to Busan flights
San Francisco to Jeju City flights
Palm Springs to Incheon Intl flights
San Francisco to Busan flights
San Francisco to Daegu flights
Las Vegas to Busan flights
San Francisco to Cheongju flights
Long Beach to Gimpo Intl flights
San Francisco to Ulsan flights
San Jose to Busan flights
San Diego to Jeju City flights
Santa Ana to Busan flights
Reno to Busan flights
Los Angeles to Cheongju 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest$640Average$771FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$680Average$758FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$760Average$871FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$887Average$1,081FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,150Average$1,522FlexibilityNo 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.